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BL1500 - Digi International

1. a Oo O pn i Unmnmmag Gup 3 8 EIEESEEBEEHEHHEHEBEEHE Garo H1 Pin 1 of Prototyping Board H3 Pin 1 of BL1500 Top View m Prototyping Board Side View BL1500 Controller Board mounted on Baseplate Figure D 4 Connecting the Prototyping Board to BL1500 When the Prototyping Board is installed power for software development normally comes through the DC input jack In the absence of a Prototyp ing Board for example when system development has been completed power for the BL1500 comes through H3 pin 25 ofthe BL1500 102 Prototyping Board BL1500 Sample Circuits Several demonstration circuits are included on the Prototyping Board LEDs LEDs D1 and D2 are turned on when their respective test pads TP8 TP1 are driven with a low logic level 4700 TPs M 4A 3 D2 4702 TP E M D1 Figure D 5 Prototyping Board LEDs Switches Pushbutton switches SW1 and SW2 are tied to pull up resistors Their respective test pads TP3 TP6 are pulled to ground when the switches are pressed A A 10 kQ 10 kQ SW1 Sw2 TP3M TPe M Figure D 6 Prototyping Board Switches Headers Headers J1 and J2 are tied to pull up resistors Their respective test pads TP2 TP7 are pulled to ground when connectors are installed A S 10 ko 10 kQ TP2 N 34 TP7 M a JP1 p V Figure D 7 Prototyping B
2. sss 129 inport oo ee 116 117 119 int type specifier use 82 interrupts sesser 111 114 nonmaskable 135 power failure s 135 priorities oce 97 routines essere 114 VECLOTS i eo etre ee e ee ehe 96 J Jl eeu 20 21 88 103 jumper settings 90 92 SIB2 programming mode 20 p A evazeeke 103 JB rom tab oce tsopIC 88 jumper settings 53 92 A E dde 88 jumper settings 53 92 jumper settings EPROM 5 t ea 53 EPROM size oossoo 92 factory default 92 flash EPROM 17 flash non flash EPROM 92 H2 Prototyping Board 18 Tl rtt 90 92 JPT nan S 53 92 JB2 ere 53 92 142 Index K KEYK O inesse 129 keypad initialization ssse 129 PIO to keypad signals 124 software eseese 128 129 L lc cgram usmde 128 Te ch r unos 128 lec ctrl osen a a 128 lc init eee 128 lc keyscan 129 130 lc kxget oee 129 130 lo kxinrt ocui eene 129 lc printf 2og else 128 ICD eei 111 123 128 129 connecting to BL1500 123 PANE scher 128 software ssssssseeee 128 special characters 128 LCD DUS eee 111 LCD interface PIO to LCD signal map 124 ECDX tete tiet 111 libraries function esne enen 112 liquid crystal displ
3. 28 HI Signals rr ot etat d eR Re 29 Power Supervisor Integrated Circuit ssssssssseeeee 30 Serial Communication Ports eese 32 RS 485 ae pp QU ai qt en ove RENTUR 32 RS 232 and Programming Ports sess 33 Modem Communication eese 33 Analog to Digital Converter essere 34 Extra COBversion i edet es 34 Voltage Reference dia dtt fpe etes ters 35 Data Conversion ioar isee e d eie eere ee 35 BL1500 Table of Contents iii Low pass Piltet ocu oa ORI eater 36 Internal Test Voltages 5 e CERRO PAN dienes 36 Drift eoe AA eO eemper rates 36 Absolute and Ratiometric Modes eee 36 Bipolar or Unipolar Conditioned Inputs sess 38 Factory Installed Gain and Bias Resistors ssssss 39 Initial S t p 4 stai ertet ale rettet 39 Representative Analog to Digital Setups seus 40 Setting Up Conditioned Inputs esses 40 Determine Bias Resistor To Center Span sss 4 Unipolar Variation 42 Choose Best Standard Resistor Values sss 4 Bracketing Input Range cccceceesceseeeeeeceeneeeseeseeeseeeeeseeeenaes 4 Pick Proper Toler fice LIS Tete ee aa 44 Confirm Performances hasera aipa enne 45 Calibrating the A D Converter sse 45 Using Unconditioned Converter Channels
4. sss 134 Power Failure 3023 a oio ibe teen een Wii eda riae ied 135 Power Failure Sequence of Events sees 135 Multiple Power Line Fluctuations eee 136 Recommended Power Failure Routine esse 137 Holdup Time iss tee Se Ee 138 Index 139 Schematics vi Table of Contents BL1500 Asout THis MANUAL This manual provides instructions for installing testing configuring and interconnecting any of the Dynamic C programmable controllers in the BL1500 series The term BL1500 will be used generically throughout this manual when referring to any controller in the BL1500 series Where information applies to a specific controller the model number will be specified Models cur rently covered by this manual include the BL1500 BL1510 and BL1520 Instructions to get started using Dynamic C software programming func tions as well as complete C and Dynamic C references and programming resources are referenced when necessary Assumptions Assumptions are made regarding the user s knowledge and experience in the following areas Ability to design and engineer a target system that a BL1500 will control Understanding of the basics of operating a software program and editing files under Windows on a PC Knowledge ofthe basics of C programming GY Fora full treatment of C refer to the following texts The C Programming Language by Kernighan and Ritchie C A Refe
5. Flash EPROM U6 O M Figure 2 1 Flash EPROM Installation and Jumper Settings BL1500 Getting Started 17 Connecting the Prototyping Board to the BL1500 The Prototyping Board connects to the top of the BL1500 The 26 pin header H3 on the BL1500 plugs into the socket strip H1 on the under side of the Prototyping Board Most of the Prototyping Board extends beyond the edge of the BL1500 Figure 2 2 illustrates how to attach the Prototyping Board to the BL1500 Pin 1 of header H1 on the Prototyping Board must match pin 1 of header H3 on the BL1500 from wall mount power supply Prototyping Board BL1500 Controller Serial DC c Input Jack Cable P to PC O00000000p a 7 Qooooooooo S O aari 8 oooooooooool 9 eg poen 00000000000 B LI Bron ooo 95509009 5 f B m oooooooooo oe nnnnunnnnnn BH EL oo 966000000 Super Sloss e u2 Yt E V nnnm E 00000000000 Can o oo BH ELE ooooooooooo oloo E un o0000000000 Qo oo PIO 1 29 g HH oooooooooooQ oleo loOo0ooooooo 299 o 005 oooooooooo 09 99 u4 60000000008 E g u9 ae ooooooooooo 8 8 RPA a g 2 o0000000000 8 o o REEEBBBBBREBEBRBEBBHH pig ooooooooooo Us jE 000000000006 g Qe200000000 a 5 Flash d 000000000 9 a EPROM p r gt x Sm
6. 115 EZIOPL2 LIB 115 EZIOPLC LIB 115 EZIOTGPL LIB 115 F features ssssssessesseeeeeee 13 Prototyping Board 100 BL1500 file transfer protocol XMODEM eee 33 flash EPROM installation esses 17 jumper settings ssss 17 SO LWAIe 5er 75 float USE ce ae ERR 82 G ground onena te 29 analog sssseseeeeee 29 digital iiie 29 high current sss 29 low level signals 29 H HI BL1500 sss 88 Pinout iia 29 89 HI Prototyping Board aede reis e 18 100 101 H2 BL1500 RS 232 port PINOUl 1t tende 90 programming eee 20 serial communication 33 88 H2 Prototyping Board 101 jumper settings eesse 18 PINOUT teeth 55 H3 BL1500 18 88 102 132 PINOUT tou 27 55 91 RS 485 serial communication 32 RS 485 signals 55 headers locations 2 2 88 heat dissipation with base plate 133 without base plate 134 heat sink eee 87 132 hitwd ueeexeIMDS 30 138 holdup time 138 Index 141 IO H1 BL1500 sss 29 H3 BL1500 sss 27 nS 94 Software sssssssseseeeeenee 63 IEEI ttes 136 IBE2 aal ettet edes 136 initialization keypad
7. 125 modem communication 33 null modem 33 modes A D converter esse 36 addressing ssssuus 113 PIO operation 25 BL1500 mounting holes base plate seesss 87 Prototyping Board 86 101 N MMI s 30 135 136 137 nonmaskable interrupts See NMI null modem 33 O operating modes 51 program mode 51 runmode et 51 switching esse 52 outport 116 117 119 P PAO a odes 123 PAT eire 123 PAD e neta 123 PA auno ee edis 123 o 123 Zu 123 PAG xti eie 123 PAT aetema etes eixde 123 PBUS TG LIB sssesese 122 piggyback expansion boards 100 103 pin 1 locations sss 88 pinout H1 BL1500 29 89 H2 BL1500 RS 232 port 90 H2 Prototyping Board 55 H3 BL1500 27 55 91 PIO 61 123 125 128 129 A D converter esse 34 handshake lines 26 impedance sees 26 lines 5n deed het 62 operating modes 25 Port A Lednica 125 128 129 Port B uet 129 register names eese 61 voltage limits 26 Index 143 PIO T esie rre 25 lines eet s 62 Port
8. ssse 46 Real Emme Clock inde tee de i ru tee 47 Chapter 4 System Development 49 Beginning Development essen 50 Operating Modes sssssssssesseseeeenennennennen eene 51 Running A Program in Run Mode eee 51 Returning To Programming Mode see 52 EPROM iiiter o avanti etna tien EIER EI HE S 53 Programming EPROM sess 54 Developing An RS 485 Network sesessseseeeeeeenenee 55 Chapter 5 Software Reference 59 Software Development Options sesssseeseeeeene 60 Dynamic C Development Software sss 60 Dynamic C Manuals utente ene RE 60 Programmable Input Output essere 61 Available PIO Lines eiie Rn rper 62 Power up PIO Configuration cccceescesceeseeseeseeeceeeeeeenseeeeeeeeaees 62 Input Output Software sse 63 Shadow Registers eese 63 Function Prototypes assesses nennen tente nennen 63 ReaETim Clock 5 cioe eee ate diee 66 Global Time and Date Structure eee 66 Function Prototypes ccecceescessecssceseeseeeseceseeseeeseeeseeseeeseenseeneeesrens 67 iv Table of Contents BL1500 Analog to Digital Converter Drivers eee 60 Function Prototypes ssssssseseeseeeeenenennennenne nennen 69 Controlling XP8300 with PIO 1 Port A essere B Function Prototypes
9. 8 PA6 13 DB6 9 PAT7 7 14 DB7 10 GND 3 VO 26 GND 2 pU 1 VSS To improve contrast connect VO to 0 3 V by adding a resistor between VO and GND instead of connecting VO to GND Table G 3 PIO to Keypad Signal Map BL1400 Keypad Signal H3 Pin No PIO Port Signal 2 PAO KeyRead 1 3 PAI KeyRead 2 l 6 PA4 DriveLine 1 7 PAS DriveLine 2 8 PA6 DriveLine 3 9 PAT DriveLine 4 13 PB7 KeyRead 6 14 PB6 KeyRead 5 15 PB5 KeyRead 4 16 PB4 KeyRead 3 124 Simulated PLCBus Connection BL1500 Software Drivers Using Expansion Boards with PIO 1 Port A A PLCBus driver is implemented using the 8 bit PIO 1 Port A PIOA With the BL1500 the developer is limited to 4 bit PLCBus peripherals An attention line AT is not available The wiring connections shown in Table G 1 are used For multiply threaded programs be sure to save and to restore the state of the PLCBus when entering a thread that can preempt other threads that also use the PLCBus The function mgsave pbus saves PLCBus state to the stack and mgrestore pbus restores it from the stack e void mgsetl2adr int addr Sets the current address of the PLCBus A subsequent read or write of the PLCBus will access the expansion board with this address The address remains in effect until a new address 1s set The term addr is the 12 bit physical address of the PLCBus expansion board The lowe
10. 62 14145 4414654145 17 5 C W At an ambient temperature of 50 C the maximum power dissipation is Puax 125 50 17 5 4 28 W With V equal to 12 V the maximum current draw is 1 4 28 12 5 611 mA 134 Power Management BL1500 Power Failure Figure H 1 shows the power failure detection circuitry ofthe BL1500 Data DCIN Bus R15 VBAT Figure H 1 Power Failure Circuitry Power Failure Sequence of Events The following events occur as the input power fails l The power management integrated circuit triggers a power failure NMI nonmaskable interrupt when the unregulated direct current input voltage falls below approximately 7 9 V as determined by the voltage divider R1 and R15 This provides a holdup period t during which the power fail routine may store important state data At some point the raw input voltage level will not exceed the regulated voltage level required by the regulator s dropout voltage At that point the regulated output begins to drop The power management integrated circuit triggers a system reset IRESET when the regulated 5 V supply falls below approximately 4 65 V The power management chip forces the chip enable line of the SRAM high standby mode which prevents the system from writing to the RAM If an external backup battery is installed the watchdog integrated cir cuit preserves the RAM s data by switching to battery power when the regula
11. Digital Ground P2B4 PIO 2 Port A Data Line 4 P2B5 PIO 2 Port A Data Line 5 P2B6 PIO 2 Port A Data Line 6 P2B7 PIO 2 Port A Data Line 7 AD Unconditioned A D Input AD Unconditioned A D Input VREF A D Voltage Reference ADI Conditioned A D Input AGND Analog Ground ADO Conditioned A D Input Pins are provided for both analog and digital ground Make it standard practice to observe the following conventions Do not mix analog and digital ground signals Do not connect analog ground to digital ground external to the BL1500 Return sensitive low level analog signals to analog ground Return high current on off signals to digital ground Subsystems 29 Power Supervisor Integrated Circuit The ADM691 power supervisor IC is a key component that helps a system survive power fluctuations and power outages Several vital services provided by the power supervisor are described below Power on reset The supervisor IC generates the power on reset for the BL1500 by holding RESET low until the IC senses that VCC has risen above the reset threshold 4 65 V and the battery voltage 2 5 V to 4 25 V DC When VCC falls below the threshold the supervisor IC disables the RAM to prevent spurious writing of data RAM protection The power supervisor IC gates the decoded RAM select line RAMSEL to the RAM s chip enable line RAMCE whenever VCC is above the reset threshold and VBAT When VCC falls below
12. R14 used to condition the analog input BL1500 Factory Installed Gain and Bias Resistors The BL1500 is configured with gain and bias resistors installed for the conditioned A D channels configured for 0 V to 10 V DC inputs so that the controller works right out of the box If a different input voltage range is required change the gain and bias resistors Initial Setup The op amp s gain and bias resistors R11 R14 are installed in sockets provided on the BL1500 Each BL1500 controller comes with these resistors already installed Roam R11 and R13 2370 Q GAIN R R12 and R14 7392 KQ BIAS Resistors R11 R14 yield a nominal gain of 0 25 for a unipolar input signal ranging from 0 V to 10 V These values differ slightly from theoretical values to allow for real world resistor tolerances Refer to Setting Up Conditioned Inputs on the following Gv pages for a detailed method of determining the best values for gain and bias resistors The strip sockets on 0 300 inch centers accommodate 1 8 W resistors R11 R14 The BL1500 can be ordered in production quantities with A customer specified surface mount resistors installed for R11 R14 Contact your Z World Sales Representative at 530 757 3737 BL1500 Subsystems 39 Representative Analog to Digital Setups Table 3 7 gives the values of gain and bias resistors for various common input voltage ranges in the absolute conversion mode using the onboard v
13. Troubleshooting BL1500 ArPENDIX B SPECIFICATIONS Appendix B provides comprehensive BL1500 physical electronic and environmental specifications BL1500 Specifications 83 Electrical and Mechanical Specifications Table B 1 lists electrical mechanical and environmental specifications for the BL1500 Table B 1 BL1500 General Specifications Parameter Board Size Specification 3 2 x 2 3 x 0 56 81 mm x 58 mm x 14 mm Operating Temperature 40 C to 70 C may be stored at 55 C to 85 C Humidity 596 to 9596 noncondensing Power 9 V DC to 12 V DC 80 mA linear regulator Configurable I O 24 5 V TTL and CMOS compatible I O lines are software selectable as either inputs or outputs Digital I O See Configurable I O Two 12 bit conditioned default input range is 0 V Analog Inputs to 10 V Two 12 bit unconditioned 0 V to 2 5 V Analog Outputs No Resistance No Measurement Input Processor Z180 Clock 9 216 MHz SRAM 128K standard surface mounted EPROM Optional supports up to 512K Flash EPROM Optional supports up to 256K EEPROM Simulated in flash EPROM Software implementable Counters Serial Ports Serial Rate One RS 232 with CTS RTS and one RS 485 Up to 57 600 bps Watchdog Yes Time Date Clock Yes Connections for user supplied battery on header Backup Battery H3 pin 21 84 Specifications
14. is40kQ BIAS BIAS Choose Best Standard Resistor Values Calculated values are not always be available as standard resistor values In these cases use the nearest standard resistor value For example rather than 6667 Q use 6650 if using one percent resistors or 6800 Q if using 5 percent resistors 42 Subsystems BL1500 Bracketing Input Range To be sure of accurately measuring signals at the extremes of an input range be aware of the interaction between the 10 kQ fixed resistors R21 R24 and the other installed resistors R11 R14 In the ideal case if a signal is measure at the minimum input level the A D converter s input would be at the maximum expected value of 2 5 V Resistor values vary within their rated tolerance bands Thus if the fixed input resistor is lower than its nominal value and the installed resistor is slightly higher than its nominal value the actual input to the A D converter would be greater than 2 5 V A loss of accuracy then results because the A D input would reach its maximum input value before the true signal input reaches the minimum expected input level Figure 3 11 shows how variations in tolerance can cause the analog signal to exceed the limits of the analog converter Out of range LG a a pm a oe ea a qup Mu emen A D converter s input voltage limit 2 Op amp output voltage deviation arising from 5 resistor variations o 2 c Q oO Q lt T 0 P Out of range 40 BL1500 Inp
15. void setPIODB2 byte mask PIODB2 lt PIODB2 OR mask Active bits 1s of mask are set in the current output of PIODB2 PIO 2 e void resPIODB2 byte mask PIODB2 PIODB2 AND NOT mask Active bits 1s of mask are reset in the current output of PIODB2 PIO 2 BL1500 Software Reference 65 Real Time Clock The real time clock RTC has the following features Aclock calendar that accounts for leap years and the varying number of days in a month e A 3l byte scratchpad RAM The capability to recharge the backup battery 2 5 V to 4 25 V DC if a user supplied backup battery is attached to the BL1500 An application can write to both the clock calendar and the RAM in burst mode In this mode the software specifies a start location and then writes multiple consecutive characters to the RTC The RTC automatically increments the internal address for the next write This approach is more efficient than setting the address for each byte in the nonburst mode Global Time and Date Structure Dynamic C automatically creates the following global structure to hold the time and date struct char 0 59 char 0 59 char 0 23 char 1 31 char l 12 char 0 150 1900 2050 char 0 6 where 0 means Sunday L Because Dynamic C automatically creates this structure it should not be declared in an application 66 Software Reference BL1500 Function Prototypes int tm rd struct tm t Stores the real time clock s
16. 10 10 io io 1010 0 O O Li L GND 2 o Oi Oi 10 10 45V red o 10 Oi tense Figure D 3 Prototyping Board 5 V and GND Connections BL1500 Prototyping Board 101 Thearray is 11x20 overall with pads on 0 1 centers Certain adjacent pads are connected making it easy to place 300 mil or 600 mil DIPs and solder wires to nearby pads rather than to the pins of the DIPs Installing the Prototyping Board Connect the prototyping board to the BL1500 by pressing the header block H1 underneath the Prototyping Board onto header H3 of the BL1500 Observe the correct orientation for the Prototyping Board when installed the main body of the Prototyping Board extends out away from the BL1500 see Figure D 4 Pin 1 of H1 must connect with pin 1 of H3 on the BL1500 Otherwise both boards will be damaged from wall mount power supply Prototyping Board BL1500 Controller Serial Cable to PC DC Input Jack Z180 o oo RD Do Po G o 0 o0 o oc S FX DIDDDUOCHUUUUUHUnu H B B esjoo o00000l H2 goooooooooo g o TOOL 9 00006000 fmi p RP1 _ ___ fa o c IEEEEHEEBERERHEHHE PIO2 v sJjoo o00000 oooooo Ooooooo oooooo oooooo oooooo oooooo oooooo oooooo oooooo oooooo ooooQoo D 99 73 N
17. 40 Subsystems BL1500 Equation 3 2 expresses an amplifier s gain in terms of its input voltage range where g is the gain Vy is the maximum input voltage and Vi is the minimum input voltage 2 5V s G2 Vin B Vin max min e The ratio of the user specified gain resistor R an R11 or R13 to its associated fixed input resistor R21 or R23 determines an amplifier s gain For the amplifier in Figure 3 10 with its input resistor fixed at 10 kO the gain is Roan 3 3 10 kQ Given an input voltage range of 10 V this gain equation fixes the amplifier s gain at 0 25 and scales the input signals range properly down to the op amp s 2 5 V maximum output range R amn must therefore be 2500 Q C20 C21 0 01 uF RGAIN rv o_O O _ R11 R13 ADO H1 20 AD1 H1 18 10 k i ANNN m AINO U15 1 R21 AIN1 U15 2 R23 R22 R24 VRO RBIAS VRI M C NAA o o VREF H1 17 10 kQ R12 R14 Figure 3 10 Gain and Bias Resistors for Conditioned Analog Inputs BL1500 Subsystems 41 Determine Bias Resistor To Center Span If the op amp is to servo its output properly around the desired center voltage establish the appropriate bias voltage at the op amp s noninverting input Select the bias or offset resistor R R12 or R14 to position the input voltage range correctly with respect to ground in this example 5 V to 5 V Because the value for R has already been sele
18. A DIRECTE 112 117 ReadRam1302 sss 67 real time clock 47 backup battery 47 68 Software neinni 66 trickle charge circuit 47 regulated input voltage 135 regulator essen 132 reset expansion boards 116 resistors choosing standard values 42 measuring resistance 45 temperature coefficients 36 BL1500 fresPIOCA oer es 63 resPIOCA2 sseeeeeee 64 resPIOCB dni 64 resPIOCB2 eee 65 resPIODA eeenoaenac one 64 resPIODAA2 esee 64 resPIODB eee ere 64 resPIODB2 esee 65 RJS12 s netter 106 RN355 5degelelquda das 46 RPI asc cease iad iiie ton 5 S AE EE E TE art ES 123 RS 232 serial communication 33 RS 485 serial communication 32 network eeeeeeee 55 56 termination and bias resistors 57 run mode EB 51 S sample programs 76 T serial communication 76 SEL100 essen 110 select PLCBus address 116 serial communication 3 Z180 Port 0 s 32 33 Z180 Port 1 32 Serial Interface Board 2 See SIB2 setl2adr sse 116 setl 6adr sss 116 set24adr essseee 118 set4adr snow dun 117 set8adr sss 119 SetPIOCA eoa e ee 63 SetPIOCA2 eee 64 Se
19. BRDY BSTBLGND Figure 3 2 PIO 1 Line Map Table 3 3 PIO 1 Preassigned Pins PIO 1 Port Pin Signal Pin Function P1B3 RTCCLK RTC serial clock P1B2 RTCDAT RTC serial data P1B1 EN485 RS 485 transmit enable P1BO RTCRST RTC reset 26 Subsystems BL1500 H3 Signals Header H3 brings out the usable I O lines of PIO 1 plus several other miscel laneous signals Table 3 4 lists and defines the usable I O lines and other signals for header H3 Table 3 4 PIO 1 Signals on Header H3 H3 Pin O 00 10 tn FW NY m ii c 24 25 26 W Signal 5 V P1A0 PIAI P1A2 P1A3 P1A4 P1A5 P1A6 P1A7 GROUND ARDY ASTB P1B7 P1B6 P1B5 P1B4 RTCCLK RTCDAT RESET GROUND VBAT GROUND RS 485 RS 485 DCIN GROUND Signal Description Regulated Power PIO 1 Port A Data Line 0 PIO 1 Port A Data Line 1 PIO 1 Port A Data Line 2 PIO 1 Port A Data Line 3 PIO 1 Port A Data Line 4 PIO 1 Port A Data Line 5 PIO 1 Port A Data Line 6 PIO 1 Port A Data Line 7 Digital Ground PIO 1 Port A Handshake Line PIO 1 Port A Handshake Line PIO 1 Port B Data Line 7 PIO 1 Port B Data Line 6 PIO 1 Port B Data Line 5 PIO 1 Port B Data Line 4 Real Time Clock Control Lines Real Time Clock Data Line Reset Signal Digital Ground External Battery Input Digital Ground RS 4854 RS 485 Unregulated Voltage Input Digital Input A Since the BL1510 and BL1520 do not have a r
20. choosing standard values 42 measuring resistance 45 setting up inputs 40 SOMMWALE siae 69 unipolar variation 4 virtual channels 36 AOX iet teocr eee Re mes 111 AIX A2X A3X occ 111 112 ADO i cese 34 38 45 INDT street etn 34 38 ADD 4c eene 34 38 46 AD3 suae oes 34 38 46 AD680UT esee 36 voltage drift 36 adapter PLCBus connections 123 ADGER oid tees 34 AdcPioNoLock sssss 69 ADDIN aer ES 34 ADDOUT teer ere ins 34 addresses encoding sirsiran 113 MOES sinrin teer 113 PLCBUS inte 113 125 ADM691 essere 30 hysteresis sse 30 analog ground 29 attention line ssssss 111 B background routine 114 backup battery real time clock 47 68 base plate s 87 132 bidirectional data lines 111 BIOS Karaes eeen e eere 62 Index 139 BL1500 features accus 13 Imemoty eeeeeeeeneeneneneee l4 models 13 options and upgrades l4 BL1510 features 1 uere 13 BL1520 eat fes s eco 13 board layout BI500 tese 12 Prototyping Board 100 brownouts eene 30 bus control registers 115 digital inputs 115 EXPANSION eese 110 115 8
21. 109 PLCBus Overview The PLCBus is a general purpose expansion bus for Z World controllers The PLCBus is available on the BL1200 BL1600 BL1700 PK2100 and PK2200 controllers The BL1000 BL1100 BL1300 BL1400 and BL1500 controllers support the XP8300 XP8400 XP8600 and XP8900 expansion boards using the controller s parallel input output port The BL1400 and BL1500 also support the XP8200 and XP8500 expansion boards The ZB4100 s PLCBus supports most expansion boards except for the XP8700 and the XP8800 The SE1100 adds expansion capability to boards with or without a PLCBus interface Table F 1 lists Z World s expansion devices that are supported on the PLCBus Table F 1 Z World PLCBus Expansion Devices Device Description EXP A D12 Eight channels of 12 bit A D converters SE1100 Four SPDT relays for use with all Z World controllers XP8100 Series 32 digital inputs outputs XP8200 Universal Input Output Board XP8300 XP8400 XP8500 XP8600 16 universal inputs 6 high current digital outputs Two high power SPDT and four high power SPST relays Eight low power SPST DIP relays 11 channels of 12 bit A D converters Two channels of 12 bit D A converters XP8700 One full duplex asynchronous RS 232 port XP8800 One axis stepper motor control XP8900 Multiple expansion boards may be linked together and connected to a Z World controller to form an extended sys
22. 3 2 list and define the four modes of operation Table 3 1 PIO Modes of Operation Mode Description Mode 0 Strobed byte output Mode 1 Strobed byte input Mode 2 Bidirectional data transfer Mode 3 Bitwise I O input output selectable per bit Table 3 2 Permissible PIO Port Operating Modes BL1500 Subsystems 25 The PIO lines can also detect transitions interrupting the microprocessor in various ways Although each port has two handshake lines the only usable handshake lines for Port A of PIO 1 appear on header H3 Port A lines have TTL compatible logic levels In addition to being TTL compatible Port B lines can supply up to 1 5 mA at 1 5 V to drive Darling ton transistors For either port you may need to add current limiting resis tors noise filters or transient voltage suppression circuitry depending on the application The impedance of a PIO line is approximately 80 Q for sinking current and 160 Q for sourcing current Do not apply negative voltages voltages below ground or voltages above VCC 5 V to either PIO PIO 1 Four lines of PIO 1 DO P1A7 DO PA7 Port B are preassigned D1 PAG Figure 3 2 illustrates Pd Ed PIA each line location and D4 P1A3 PAST PIAS Table 3 3 lists and de D6 P PA2 B3A1 fines the signals and D7 Dl P1A0 oe function for spe inny ADDY cific pins PIO 1 ASTB ASIB U2 P1B7 boc PIBS PB5 P1B5 PB4 P1B4 PB3 RTCCLK PB RICDAT PB1 EN485 PBO RTCRST NC
23. 50 ms BL1500 Repeatedly Resets The BL1500 resets every 1 0 seconds if the watchdog timer is not hit Ifa program does not hit the watchdog timer then the program will have trouble running in standalone mode To hit the watchdog make a call to the Dynamic C library function hi twd BL1500 Troubleshooting 81 Common Programming Errors Values for constants or variables out of range Table A 1 lists accept Table A 1 Ranges of Dynamic C Function Types Type Range int 32 768 25 to 32 767 25 1 long int 2 147 483 648 2 to 42147483647 2 1 float 1 18 x 107 to 3 40 x 10 5 char 0 to 255 able ranges for variables and constants Mismatched types For instance the literal constant 3293 is of type int 16 bit integer The literal constant 3293 0 however is of type float Counting up from or down to one instead of zero In software ordinal series often begin or terminate with zero not one Confusing a function s definition with an instance of its use in a listing Not ending statements with semicolons e Not inserting commas as required in functions parameter lists Leaving out an ASCII space character between characters forming a different legal but unwanted operator e Confusing similar looking operators such as amp amp with amp with with e nadvertently inserting ASCII nonprinting characters into a source code file 82
24. B assigned lines 26 PIO2 iuc 25 lines 62 POr A ioeo tnr 28 POPS e dee 95 PIOCAShadow e 61 63 PIOCBShadow e 61 63 PLCBus 110 112 114 115 125 26 pin connector pin assignments 110 4 bit operations 111 113 8 bit operations 111 113 adapter BLIO 5 ettet 122 addresses 113 125 126 127 DAQGS eese 127 128 memory mapped I O register 112 reading data s 112 Ielyse 6 oauiaskeqiicene 126 DIP ous dtes erts 110 drivers esses 115 T set certet 125 Stale zoo eee 126 writing data sssse 112 POWER oir Re 132 maximum dissipation 132 SIB2 3 iue dnte ees 106 power failure brownouts eene 138 holdup time 138 interrupt routine 138 interrupts seeseseeeeeeeee 135 overload ienn easier 138 power supply sess 19 printf for LCD nete 128 processor Stacks eae eee 126 program mode ssssss 51 144 Index RS232 4 bua a 60 SIB2 i one e erst 60 programming connections RS 232 port eee 20 SIB2 5 esto ORI HH 21 Prototyping Board Varese us 18 100 103 132 HS Messi 100 101 array of pads susse 101 BL1500 connections 18 board layout 100 BUZZED 2 aeree 104 BZ1 buzz
25. JP2 EPROM size 28 pin or 32 pin 88 Specifications BL1500 H1 PIO 2 Programmable I O ports analog inputs H2 RS 232 and alternative programming port H3 PIO 1 Programmable I O ports RS 485 power Ji Programming run mode and SIB2 programming port JP1 EPROM type flash or non flash Header H1 PIO 2 and Analog Input Signals Header H1 carries the I O signals for PIO 2 U9 and the A D converter signals Table B 4 lists and defines the usable I O lines and other signals for H1 BL1500 Table B 4 PIO 2 Signals on Header H1 45V P2A0 P2AI P2A2 P2A3 P2A4 P2A5 P2A6 P2A7 GROUND Signal Description Regulated Power PIO 2 Port A Data Line 0 PIO 2 Port A Data Line 1 PIO 2Port A Data Line 2 PIO 2 Port A Data Line 3 PIO 2 Port A Data Line 4 PIO 2 Port A Data Line 5 PIO 2 Port A Data Line 6 PIO 2 Port A Data Line 7 Digital Ground PIO 2 Port A Data Line 4 PIO 2 Port A Data Line 5 PIO 2 Port A Data Line 6 PIO 2 Port A Data Line 7 Unconditioned A D Input Unconditioned A D Input A D Voltage Reference Conditioned A D Input Analog Ground Conditioned A D Input Pins are provided for both analog and digital ground Make it standard practice to observe the following conventions Do not mix analog and digital ground signals Do not connect analog ground to digital ground external to the BL1500 Return sensitive low level analog signals to analog ground Return hig
26. The function turns off interrupts during the entire sampling period RETURN VALUE 0 if successful or 2 if the sampling rate is too fast for A D conversion Data are not collected if the sampling rate is too fast A The function turns off interrupts during the entire sampling period int mg2adc_convert unsigned int data struct mg2adccoef cnvrsrn Converts raw data from an A D conversion using the conversion constants previously stored in the mgadccoeff structure to which envrsn points RETURN VALUE voltage equivalent of raw A D data Converts raw data according to the equation voltage cnvrsn gt invgain cnvrsn gt zero_offset data int mg2adc_writecoef int ee base struct mg2adccoeff cnvrsn Stores the conversion constants from the mgadccoeff structure which envrsn points to into the simulated EEPROM ofthe BL1500 PARAMETER ee_base is the starting location of six consecutive bytes in which to store the calibration data RETURN VALUE 0 if the data are successfully stored in the simulated EEPROM 1 ifno flash EPROM is present and therefore no simulated EEPROM is available int mg2adc_readcoef int ee base struct mg2adaccoeff cnvrsn Reads the conversion constants from the simulated EEPROM starting at location ee base into the mgadcoe f structure to which cnvrsn points RETURN VALUE 0 ifthe data are successfully stored in the simulated EEPROM 1 if no flash EPROM is present and therefore no s
27. Vectors Signal INT1 VEC INT2 VEC PRTO VEC PRT1 VEC DMAO VEC DMA1 VEC CSIO VEC SERO VEC SER1 VEC PIOA VEC PIOB VEC PIOA2 VEC PIOB2 VEC Description Expansion bus attention INT1 vector INT2 vector PRT Timer Channel 0 PRT Timer Channel 1 DMA Channel 0 DMA Channel 1 Clocked Serial I O Asynchronous Serial Port Channel 0 Asynchronous Serial Port Channel 1 PIO Channel A through INTO PIO Channel B through INTO PIO Channel A2 through INTO PIO Channel B2 through INTO interrupt vectors set by the boot code in the Dynamic C EPROM In order to vector an interrupt to a user function in Dynamic C a directive such as the following is used SINT VEC 0x10 myfunction This example causes the interrupt at offset 10H Serial Port 1 ofthe Z180 to invoke the function my unction The function must be declared with the interrupt keyword interrupt myfunction 96 I O Map and Interrupt Vectors BL1500 Interrupt Priorities Interrupt priorities are listed in Table C 5 from highest to lowest priority Table C 5 Interrupt Priorities Highest Priority Trap Illegal Instruction NMI Nonmaskable Interrupt INT 0 Maskable Interrupt Level 0 3 modes PIO interrupts INT 1 Maskable Interrupt Level 1 PLCBus attention line interrupt INT 2 Maskable Interrupt Level 2 PRT Timer Channel 0 PRT Timer Channel 1 DMA Channel 0 DMA Channel 1 Clocked Serial I O Serial
28. bit drivers 118 addresses susus 114 devices eeeeee 114 115 functions 116 119 rules for devices 114 software drivers 115 D D D eese eus 111 operations 4 bit 111 112 114 SaDit os eie 111 115 BUSADRO 112 113 125 BUSADRI 112 113 BUSADR2 112 113 125 BUSADR3 sss 118 119 BUSRD0 115 117 119 125 BUSRDI 115 116 125 BUSRD2 zointan 125 BUSWR 32408 Seka 116 125 buzzer on Prototyping Board 104 C calibration constants A D converter sssss 38 Charger1302 eseese 68 common problems programming errors 82 140 Index communication modem boton 33 Serial dee 3 connectors 26 pin PLCBus pin assignments 110 D POX DIX seen 111 DAC board PL CBUS 4mm 127 128 software seee 127 128 DBA eiit eerte 123 DBS 55e enda 123 DB6 nr ted oer 123 DB G zii nies 123 DC input Jack 19 132 DebounceCount 129 130 debouncing ssssss 129 Developer s Kit 16 packing list sess 16 digital ground 29 dimensions base plate ssssss 87 BEISQO sene rte 85 Prototyping Board 86 SIB2 c EROR NERIS 10
29. ccccccesccsseesseeseceeeeseeeseceeeeeesseeeseeseeeseesseesees B Nonvolatile Storage ent UO 74 Function Prototypes cccsccescesseesseeseeeceeseeeseceeeeeeeseeeeeeseeeeeseeenees 74 Support Libraries and Sample Programs sss 76 Appendix A Troubleshooting 79 Out of the BOX seringna a tt ed a a 80 Dynamic C Will Not Start eese 81 Dynamic C Loses Serial Link essere 81 BL1500 Repeatedly Resets essere 81 Common Programming Errors eese 82 Appendix B Specifications 83 Electrical and Mechanical Specifications sss 84 BL1500 Mechanical Dimensions eene 85 Prototyping Board esses 86 Bas Plate ebur Sale eH d rp UR CMS EDS 87 Jumper and Header Specifications esses 88 Header H1 PIO 2 and Analog Input Signals 89 Header H2 RS 232 Port eese teen netten 90 Header H3 PIO 1 RS 485 and Power eee 9 Jumper Configurations S sesana a 92 Appendix C Input Output Map and Interrupt Vectors 93 Memory Map tutes e tr a o EEE E R S QE 4 Input Output Map sese 4 Interrupt Vectors hea pce er eH a gH 96 Interrupt Priorities sssini pi n E R Ri 97 Appendix D Prototyping Board 99 Prototyping Board uso A EE REN 100 Installing the Prototyping Board ssessssessesessersessrsresrssesresesseseese 102 Sample
30. current contents into the structure t If the RTC is halted this function stores the value for midnight January 1 1980 in t and returns 1 Otherwise the function stores the current time in t and returns 0 int tm wr struct tm t Writes the values in the structure t to the RTC The function returns 0 if successful or 1 if it is unable to start the RTC int WriteRam1302 int ram loc byte data Writes data to any ofthe 31 0 30 RAM locations ofthe DS1302 The function returns 1 if successful and 1 if ram_loc is out of range int ReadRam1302 int ram loc Reads data from any ofthe 31 0 30 RAM locations ofthe DS1302 The result of the function is the data value or 1 if ram 1oc is out of range void WriteBurst1302 void pdata int count Writes count bytes in burst mode to the DS1302 starting at RAM location 0 The term pdata points to the data void ReadBurst1302 void pdata int count Reads count bytes in burst mode from the DS1302 starting at RAM location 0 The term pdata points to a storage area for the data void Write1302 int reg byte data Writes data to a specified register of the DS1302 int Read1302 int reg Reads data from a specified register ofthe DS1302 The result of the function is the data value BL1500 Software Reference 67 e Chargerl302 int on off int diode int resistor Turns the trickle charger on the DS1302 on when on_off is non zero or off when on_of
31. four bits the upper bits are undefined LIBRARY DRIVERS LIB void eioWriteWR char ch Writes information to the PLCBus during the BUSWR cycle PARAMETER ch is the character to be written to the PLCBus LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB void writel2data int adr char dat Sets the current PLCBus address then writes four bits of data to the PLCBus PARAMETER adr is the 12 bit address to which the PLCBus is set dat bits 0 3 specifies the data to write to the PL CBus LIBRARY DRIVERS LIB void write4data int address char data Sets the last four bits of the current PLCBus address then writes four bits of data to the PLCBus PARAMETER adr contains the last four bits of the physical address bits 8 11 dat bits 0 3 specifies the data to write to the PLCBus LIBRARY DRIVERS LIB The 8 bit drivers employ the following calls void set24adr long address Sets a 24 bit address three 8 bit nibbles on the PLCBus All read and write operations will access this address until a new address is set PARAMETER address is a 24 bit physical address for 8 bit bus with the first and third bytes swapped low byte most significant LIBRARY DRIVERS LIB 118 PLCBus BL1500 void set8adr long address Sets the current address on the PLCBus All read and write operations will access this address until a new address is set PARAMETER address contains the last eight bits of the physical ad
32. ground potential from unit to unit can cause serious problems that are hard to diagnose Do not connect analog ground to digital ground anywhere Double check the connecting cables to ensure that none are plugged backwards into the BL1500 s headers Verify that the host PC s COM port works by connecting a good serial device to the COM port Remember that COM1 COM3 and COM2 COMA share interrupts on a PC User shells and mouse drivers in particular often interfere with proper COM port operation For example a mouse running on COMI can preclude running Dynamic C on COM3 Use the Z World power supply supplied with the Developer s Kit If another power supply must be used verify that it has enough capacity and filtering to support the BL1500 Use the Z World cables supplied with the Developer s Kit The most common fault of user made cables is failure to properly assert CTS at the RS 232 port ofthe BL1500 Without CTS being asserted the BL1500 s RS 232 port will not transmit Assert CTS by either connect ing the RTS signal of the PC s COM port or looping back the BL1500 s RTS If wiring up a DB9 connector or a RJ 12 connector to a 10 pin connector check the connections carefully The wires do not run pin for pin Note also that telephone company wiring does not really follow a standardized color code Experiment with each peripheral device connected to the BL1500 in order to determine how it appears to the BL1500 when powered u
33. is 0 The term diode is 1 or 2 for the number of diodes in the charging circuit The term resistor is 2 4 or 8 for the resistance KQ in the circuit Ifa super capacitor or a rechargeable battery 2 5 V to L 4 25 V DC is connected to the BL1500 across U14 s VBAT and GND the RTC continues to run and its scratchpad RAM data are not lost when power is removed from the BL1500 Ifa nonrechargeable battery 2 5 V to 4 25 V DC is attached to the BL1500 do not enable the DS1302 s trickle charge circuit o the battery may explode 68 Software Reference BL1500 Analog to Digital Converter Drivers Some drivers use conversion constants for the A D converter stored in the simple global structure mg2adccoeff to automatically correct readings struct mg2adccoeff int zero offset float invgain L Because Dynamic C automatically creates this structure it should not be declared in an application This software includes routines for determining these conversion con stants from the results of measuring two known test voltages Function Prototypes e int mg2adc read int chan Reads the specified channel chan of the BL1500 s onboard A D converter PARAMETER chan ranges from 0 10 for the 11 physical A D chan nels only the first four are brought out on header H2 for actual use The A D converter s internal reference voltages can also be read out by addressing the following virtual channels chan 11 r
34. keyword or phrase Italics Indicates that something should be typed instead of the italicized words e g in place of filename type a file s name Edit Sans serif font bold signifies a menu or menu selection An ellipsis indicates that 1 irrelevant program text is omitted for brevity or that 2 preceding program text may be repeated indefinitely IN 01 Program comments are written in Courier font plain face indicate that the enclosed directive is optional Ld Brackets in a C function s definition or program segment lt gt Angle brackets occasionally enclose classes of terms Pin Number 1 Y f E ack square indicates pin 1 ofall headers Pin 1 mE Oo O O Measurements All diagram and graphic measurements are in inches followed by millime ters enclosed in parenthesis alble A vertical bar indicates that a choice should be made from among the items listed BL1500 About This Manual ix x About This Manual BL1500 CHAPTER 1 OVERVIEW Chapter provides an overview and brief description of the BL1500 features options and optional upgrades BL1500 Overview 11 Overview Each BL1500 controller is a small low cost board that is easily programmed using Dynamic C Moreover each controller offers impressive processing power for a wide variety of control applications Despite its small size a BL1500 can accommodate large real time multitasking programs Real time programs can b
35. programming can have a major affect on the conversion rate The A D converter IC provides four channels of 12 bit analog to digital conversion Two of the channels have op amps for signal conditioning and two are unconditioned The input range for the unconditioned chan nels is 0 V to 2 5 V The two unconditioned channels also have onboard sensor excitation resistors A dual op amp U16 buffers the two analog inputs received over signal lines ADO and ADI of header H1 The outputs of U16 go to the first two inputs of the A D converter s U15 eleven inputs The two unconditioned signals AD2 and AD3 go through anti latchup resistors R5 and R7 to the next two A D inputs Extra Conversion The A D converter sends converted data out serially and receives com mands serially During each serial clock cycle the chip shifts in one command bit and shifts out one data bit This combined shifting accounts for the device s behavior of returning a previous data reading automatically each time it accepts a conversion or configuration command The A D converter communicates with the Z180 via data input line ADDIN the data output line ADDOUT the clock line ADCLK the end of conver sion line EOC and the IC select line ADCS EOC goes to a logic 0 level during conversion returning to 1 when the conversion is complete Following the conversion period the A D con verter shifts the resulting data one bit at a time over ADDOUT Also dur in
36. sample program Sections include the following topics Developer s Kit Packing List Connecting the Prototyping Board to the BL1500 Connecting the BL1500 to a Host PC Establishing Communication Running a Sample Program BL1500 Getting Started 15 Developer s Kit Packing List The Developer s Kit includes items necessary for BL1500 software and hardware development The kit includes the following items An aluminum base plate heat sink that allows the BL1500 s voltage regulator to dissipate up to 3 5 W at 50 C Prototyping Board for prototyping BL1500 expansion circuits and powering the BL1500 during development The Prototyping Board measures 2 25 x 2 0 inches and connects directly to the BL1500 The board includes several sample circuits a power jack and a small prototyping area where circuits can be soldered for special needs A 128K flash EPROM Wall power supply 12 V DC Programming serial cable Miscellaneous small hardware parts such as assorted connectors screws and standoffs Also 26 pin cable connector and 20 crimp pins that may be used to construct a cable to meet specific needs A reference manual with schematics 16 Getting Started BL1500 Installing Flash EPROM Ifan EPROM is not already installed install the flash EPROM from the Developer s Kit in socket U6 on the BL1500 shown in Figure 2 1 Make sure the jumpers on headers JP1 and JP2 are set as shown in Figure 2 1
37. the 5 V or 9 V power supplies The interval between the power failure detection and entry to the power failure interrupt routine is approximately 6 us or less 138 Power Management BL1500 Symbols TIV 132 IADCS essel 34 IAT Lii hath 111 IPFO suisses 30 137 IRAMCE esee 30 IRAMSEL seee 30 IRDX parann ota 111 IRESET nnana 30 135 ISTBX ire annaa 111 IWDO ingunn annae n 30 IMIRX iioa a 111 assignment US rera e a tre E eti 82 4 bit bus operations 111 112 114 5 x 3 addressing mode 113 8 bit bus operations 111 113 115 A A D converter absolute mode 36 40 bias and gain resistors 38 39 40 tolerances sesser 44 cable capacitance 46 Calibrating sss 45 calibration constants 46 simulated EEPROM addresses RERUM IE ERE 46 conversion modes 36 feedback capacitors 36 38 H1 BL1500 sss 38 input latchup 46 input range sese 43 internal test voltages 36 low pass filter 36 offset voltage drift 36 op amp test points 45 output range seeeeeee 35 powering up BL1500 46 BL1500 A D converter ratiometric mode 36 reference inputs sss 35 resistors
38. timeout and thereby reset the processor The controller can continue to run at low voltage and might not be able to detect the low voltage condition because the Z180 s NMI input needs to see a high to low transition edge A situation similar to a brownout will occur if the power supply 1s overload ed In such a case the raw voltage supplied to the Z180 may dip below 7 9 V when a high current load turns on In response the interrupt routine performs a shutdown that turns off the high current load clearing the problem However if the cause of the overload persists the system hunts alternately overloading and then resetting To correct this situa tion obtain a larger stiffer power supply Holdup Time Z World cannot predict how much time is available to save important data The ratio of a DC power supply s output capacitor value to the circuit s current draw determines the actual duration of the holdup time interval t A few milliseconds of computing time remain until the regulated 5 V supply falls below approximately 4 65 V even if the power cuts off abruptly The amount of time depends on the size of the power supply capacitors The standard wall power supply provides about 10 ms If the power cable is abruptly removed from the BL1500 only the capacitors on the board are available reducing computing time to a few hundred microseconds These times can vary considerably depending on system configuration and loads on
39. values used in the op amp circuit before you can deter mine the values you need to install for R9 and R10 U9 oid O 15 O ey PIO 2 E Figure 3 7 Location of Analog Reference Components for Ratiometric Conversion REF is also the reference voltage for the op amps used with L A D channels 0 and 1 The resistors of the op amp bias circuit will interact with the R9 R10 voltage divider to affect the actual value or REF BL1500 Subsystems 37 5ANA VREF Figure 3 8 Analog Reference in Ratiometric Conversion Mode Bipolar or Unipolar Conditioned Inputs The two conditioned inputs can be used to measure bipolar or unipolar signals The inputs for the two conditioned channels ADO and AD1 are pins 18 and 20 of header H1 The unconditioned inputs AD2 and AD3 use pins 15 and 16 of header H1 Signals from sensors connected to ADO and ADI of H1 go to the inverting input of one of the two op amps in U16 U16 s op amps operate in the Figure 3 9 Location of Gain and Bias Resistors 38 Subsystems inverting configuration User selectable resistors R11 through R14 set the gain and bias voltages of the amplifiers The 10 kW input and bias resistors R21 through R24 are fixed Feedback capacitors C20 and C21 roll off the high frequency response of the amplifiers to attenuate noise Figure 3 9 shows the location of the gain and bias resistors R11
40. 0 xxxx xxxx 011 256 0011 xxxx xxxx 100 Sbitsx3 2 048 x0100 xxxxx xxxxx 101 2 048 x0101 xxxxx xxxxx 110 2 048 x0110 xxxxx xxxxx 111 2 048 xOlll xxxxx xxxxx 000 6bitsx3 16 384 xx1000 xxxxxx XXXXXX 001 16 384 xx1001 xxxxxx XXXXXX 010 6bitsx1 4 xx1010 l 1011 4bitsx1 1 1011 expansion register XXxx 1100 8 bits x 2 4 096 xxxx1100 xxxxxxxx XXxx 1101 8 bits x 3 1M Xxxx1101 xxxxxxxx XXXXXXXX xxxx 1 110 Sbitsxl 16 xxxx1110 XXxx1111 8 bits x 1 16 xxxx1111 This scheme uses less than the full addressing space The mode notation indicates how many bus address cycles must take place and how many bits are placed on the bus during each cycle For example the 5 x 3 mode means three bus cycles with five address bits each time to yield 15 bit addresses not 24 bit addresses since the bus uses only the lower five bits of the three address bytes BL1500 PLCBus 113 Z World provides software drivers that access the PLCBus To allow access to bus devices in a multiprocessing environment the expansion register and the address registers are shadowed with memory locations known as shadow registers The 4 byte shadow registers which are saved at predefined memory addresses are as follows SHBUSI SHBUS1 1 SHBUSO SHBUSO 1 SHBUS0 2 SHBUS0 3 Bus expansion BUSADRO BUSADRI BUSADR2 Before the new addresses or expansion register values are output to the bus their values are stored in the shad
41. 00000000 under oh Oooooooooooo board o 00000000000 00000000000 Super 00000000000 ap looooooooooo 00000000000 00000000000 00000000000 DC Jack 00000000000 000000000 000000000 JOOOONOOOO o_o O00 9 vejo000O0000 JP2 Pushbutton Switch LED Figure D 1 BL1500 Prototyping Board 100 Prototyping Board BL1500 The following list notes some important points about the Prototyping Board The Prototyping Board measures 2 0 x 2 25 51 mm x 57 mm The mounting holes are 0 125 in diameter Their centers are inset 0 125 from the edges of the board Signals on header H1 are identical to those on header H3 of BL1500 Power 9 V to 12 V DC comes in the jack through pin 25 of H1 then to the 5 V regulator on the BL1500 and back to the Prototyping Board on pin 1 5 V ofHI Header H2 on the Prototyping Board is nearly identical to header H1 but most of the signal positions on H2 are pads for easy solder connections The remaining positions on H2 are jumper pins A set of nine test points or pads shown in Figure D 2 make signals from the demonstration circuits available 45V GND 6 places H1 26 pins Test Points bottom side B o5 o9 o6 07 o8 H2 26 pins DCIN Figure D 2 Prototyping Board Signals Power rails bring 5 V and GND to the array of pads see Figure D 3 5 V tol o cal oo 1 1 are on the d Ker 10 underside of her her the board 10100 010 Oi Oi
42. 2 us The lock prevents changes in the state of the shared PIO port while the A D converter is using it If all the other PIO bits are inputs then the lock 1s not neces sary but an application should include the following definition define AdcPioNoLock 1 int mg2adc_sample int chan int count int buf unsigned int divider Samples data from the specified A D channel chan at uniform intervals oftime PARAMETERS chan ranges from 0 10 for the 11 physical A D chan nels Only the first four channels are brought out on header H2 for use Because of the A D converters combined read data setup channel cycle of operation this function also returns the previous reading The A D converter s internal reference voltages can also be read out by addressing virtual channels as shown below chan 11 returns Vref Vref 2 chan 12 returns Vref chan 13 returns Vref count is the number of samples to collect buf points to a buffer in which to store the samples divider specifies the sample rate based on the equation sample rate sysclock 20 divider or divider sysclock sample period 20 70 Software Reference BL1500 AII data default to 12 bits unipolar mode with the most sigtnificant bit first The minimum value for divider depends on the clock speed the number of I O wait states and the number of memory wait states For the default setting of BL1500 divider can be as low as 105 or about 228 us conversion
43. 6 14 5 C W Onore zs The thermal resistance across the 0 6 x 0 4 printed circuit board is approximated as follows 0 06 2 54x0 6x0 4x0 0016 62 C W Opce The contact thermal resistance from the bottom of the printed circuit board to the 6 32 PEM nut is approximately 1 C W The thermal resistance across a 3 16 long aluminum PEM is approximately 0 1875 2 54x0 016x 2 595 1 8 C W Opp The base plate has a thermal resistance of approximately 7 5 C W There fore Prorat Ac cs ouo Ouorg Opce Osp Opem g As 4414 145 145 62 141 8 7 5 44 14 654141 84 7 5 22 C W BL1500 Power Management 133 At an ambient temperature of 50 C the maximum power dissipation is Puax 125 50 22 3 57 W With V equal to 12 V the maximum current draw is 1 3 57 12 5 510 mA Heat Dissipation without the Base Plate If the BL1500 is to be mounted on a heat conducting surface Z World recommends the following mounting scheme Use a 6 32 steel screw to hold the regulator to a 1 4 6 32 aluminum standoff mounted on a large heat sink A conservative estimate of the thermal resistance is as follows The thermal resistance across a 4 6 32 aluminum standoff of 1 4 height is 0 25 2 540 035 x 2 595 1 C W Oar Assuming a basis of 5 C W the total thermal resistance becomes Prorar2 Fic Acs ouo Ouorg l pcp n Osp Opem Ogase 4414 14 5 14 5
44. 7 DIP relays 110 drivers software expansion bus 115 expansion bus 8 bit 118 rel y RE 115 DRIVERS LIB ssess 115 DS1302 ncn eres 4 Dynamic C ssssss 14 60 establishing communication 22 libraries sss 76 running a program 51 running a sample program 22 sample programs 76 77 serial communication 76 BL1500 COE lt e 74 eg WE E E E 74 eioPlcAdr12 116 eioReadDO re 117 eioReadDl re 117 eioReadD2 see 117 eioResetPlcBus 116 eioWriteWR sss 118 electrical specifications 84 PN chere aciei s 123 environmental specifications 84 EPROM 54d 53 access time sessssseeeese 53 burning iioi 54 copyright sess 54 installing sss 53 jumper settings 00 0 0 53 escape sequences E E D E E T 128 EXp A DI2 airn ettemes 110 expansion boards WES Cb nant acis 116 expansion bus 110 115 8 bit drivers suss 118 addresses sssssssss 114 devices eeeseee 114 115 digital inputs 115 functions ss 116 119 rules for devices 114 software drivers 115 expansion register 114 EZIOLGPL LIB 115 EZIOMGPL LIB
45. A of PIO 1 PIOCB Command register for Port B of PIO 1 PIODA Data register for Port A of PIO 1 PIODB Data register for Port B of PIO 1 PIOCA2 Command register for Port A of PIO 2 PIOCB2 Command register for Port B of PIO 2 PIODA2 Data register for Port A of PIO 2 PIODB2 Data register for Port B of PIO 2 By default names related to PIO 1 do not explicitly designate the PIO number however names related to PIO 2 do indicate the number This scheme ensures software compatibility with the BL1400 which only has a single PIO chip For example observe the names of I O routines that use shadow resisters PIOCAShadow and PIOCBShadow for PIO and PIOCA2Shadow and PIOCB2Shadow for PIO 2 BL1500 Software Reference 61 Available PIO Lines Not all I O and handshaking lines of the two PIO chips are available for use The following sections describe the available lines PIO 1 I O lines PIO 1 Port A is available all 8 bits in PIO modes 0 strobed byte input 1 strobed byte input and 3 bitwise I O PIO 1 Port B is available in mode 3 bitwise I O only Bits 7 4 of Port B are always available Bits 3 RTCCLK and 2 RTCDAT are available if the real time clock RTC is not used The RTC is not present on the standard BL1510 and the BL1520 Bits 1 EN485 and 0 RTCRST of Port B are dedicated lines PIO 21 O lines PIO 2 Port A is available all bits in PIO mode 3 only PIO 2 Port B is avail
46. BL1500 BL1500 Mechanical Dimensions Figure B 1 shows the mechanical dimensions for the BL1500 3 8 0 15 lo 0 125 dia 3x A 10 125 typ 3 2 Figure B 1 BL1500 Dimensions BL1500 Specifications 85 Prototyping Board Figure B 2 shows the dimensions and mounting hole locations of the BL1500 Prototyping Board j 0 125 typ 3 2 Figure B 2 BL1500 Prototyping Board Dimensions 86 Specifications BL1500 Base Plate Figure B 3 shows the dimensions and mounting hole locations of the BL1500 base plate supplied with the Developer s Kit The base plate is made from 0 060 aluminum y A A ho to C oF aoe DG aid soa 4 40 6 3x 6 32 clear 4x AC gt es ce y 0 25 typ j 6 4 0 1 a R typ 0 275 typ 7 0 3 45 88 HH a 0 5 SS Figure B 3 BL1500 Base Plate Dimensions BL1500 Specifications 87 Jumper and Header Specifications Figure B 4 shows the locations ofthe BL1500 headers O Programmable l O RS 485 Power JP1 EE JP2 aa Programmable I O Analog Inputs Figure B 4 BL1500 Headers Table B 2 provides the absolute pin locations for the input output headers Table B 2 BL1500 Pin 1 Locations in inches Header Location H1 3 000 1 250 H2 3 000 1 950 H3 0 200 0 600 Table B 3 describes all the headers on the BL1500 Table B 3 BL1500 Headers Header Description
47. Circuits i ette Sese EE UI ii 103 LEDS tdt o adde qut efe dade 103 SWItChes Em 103 Headers ient motel umb 103 BUZZED ode B e ecl estet ere ER ERES 104 RE Filter i aee d ee ra e PE DR re pee 104 T hietmistOt ce REPARARE UTR NEU rennet 104 BL1500 Table of Contents v Appendix E Serial Interface Board 2 105 Introduction 2 2 vas pri neut e een pete 106 External Dimensions ig tere e Ede leis 107 Appendix F PLCBus 109 PLCBus Overview seis duco tee oed han ere enne 110 Allocation of Devices on the Bus ssseseeeee 114 4 Bit Devices ier er n BU eot 114 8S Bit DEVICES apse iA iiss chee ea needs 115 Expansion Bus Software esee 115 Appendix G Simulated PLCBus Connection 121 PIO Port Connections arre onu ines 122 Expansion Boards cccceccessesseeeseeseceeeeseeeneeseeeseeseenseeeeeaeenseeseeass 122 Liquid Crystal Displays and Keypads sss 123 Software Drivers T A E E 125 Using Expansion Boards with PIO 1 Port A sess 125 Using an LCD with PIO Port A sese 128 Using a Keypad with PIO Ports A and B sss 129 Appendix H Power Management 131 Direct Current Input sasie s dcos dee tt te Eb ies bs 132 Power Regulator iis ide Rede eei nte ta ees 132 Maximum Power Dissipation sess 132 Heat Dissipation with the BL1400 Base Plate 133 Heat Dissipation without the Base Plate
48. Communication After hardware is connected communication can be established between a host PC and the BL1500 Communication is established by double clicking the Dynamic C icon to start the software P Communication with the BL1500 is attempted each time Dynamic C starts When communication is established no error messages are displayed BS See Appendix A Troubleshooting if an error message such as Target Not Responding or Communication Error appears After making any necessary changes to establish communication between the host PC and the BL1500 use the Dynamic C shortcut lt Ctrl Y gt to reset the controller and initialize communication Running a Sample Program The following steps describe how to run a sample program to determine if hardware connections are correctly established 1 Open the sample program MGDEMORT C located in the Dynamic C SAMPLES BL14_15 subdirectory 2 Compile the program by pressing lt F3 gt or by choosing Compile from the COMPILE menu Dynamic C compiles and downloads the program into the BL1500 s flash memory During compilation Dynamic C rapidly displays several messages in the compiling window This condition is normal 3 Torun the program press F9 or choose Run from the RUN menu 5 To halt the program execution press Ctrl Z gt 6 To restart program execution press F9 22 Getting Started BL1500 CHAPTER 3 SUBSYSTEMS Chapter 3 discusses the followin
49. Ifa program exists the BL1500 controller executes the program immediately after power up The BL1500 does not respond to Dynamic C running on a host A PC A program cannot be compiled or debugged when the BL1500 is in Run Mode Running A Program in Run Mode Use the following steps to run a program standalone not under Dynamic C control 1 Download the compiled program to flash EPROM See Chapter 5 Software Reference for details on the WriteFlash function to read or write to flash EPROM 2 Disconnect power to the BL1500 3 Remove either the SIB2 or the jumper from pins 1 and 2 of header J1 depending on the programming mode used 4 Reapply power The BL1500 begins automatically executing the program BL1500 System Development 51 Returning To Programming Mode Use the following steps to return to programming mode 1 Disconnect power 2 Reinstall the jumper connecting pins 1 and 2 of header J1 or reconnect the SIB2 3 Reapply power 52 System Development BL1500 EPROM The BL1500 has a 32 pin socket U6 that accepts 32K to 512K EPROMS The socket accepts either 28 pin or 32 pin EPROM chips including the following 27C256 27C512 27C010 27C020 32K 28 pins 64K 28 pins 128K 32 pins 256K 32 pins When using a 28 pin EPROM four pin positions at one end of the socket are left empty as shown in Figure 4 1 The access time must be 100 ns or better at 9 MHz 3 2 1 JP1
50. L NNYORLD BL1500 C Programmable Controller User s Manual 019 0030 070717 D BL1500 User s Manual Part Number 019 0030 RevisionD Last revised on July 17 2007 Printed in U S A Copyright 1999 2007 Rabbit Semiconductor Inc All rights reserved Rabbit Semiconductor reserves the right to make changes and improve ments to its products without providing notice Trademarks Dynamic C isare gistered trademark of Z World Inc e Windows isa registered trademark of Microsoft Corporation PLCBus is a trademark of Z World Inc Hayes Smart Modem isa registered trademark of Hayes Microcomputer Products Inc Notice to Users When a system failure may cause serious consequences protecting life and property against such consequences with a backup system or safety device is essential The buyer agrees that protection against conse quences resulting from system failure is the buyer s responsibility This device is not approved for life support or medical systems All Z World products are 100 percent functionally tested Additional testing may include visual quality control inspections or mechanical defects analyzer inspections Specifications are based on characterization of tested sample units rather than testing over temperature and voltage of each unit Z World may qualify components to operate within a range of parameters that is different from the manufacturer s recommended range This strategy is believed t
51. PIO 1 Port A Data Line 1 PIO 1 Port A Data Line 2 PIO 1 Port A Data Line 3 PIO 1 Port A Data Line 4 PIO 1 Port A Data Line 5 PIO 1 Port A Data Line 6 PIO 1 Port A Data Line 7 Digital Ground PIO 1 Port A Handshake Line PIO 1 Port A Handshake Line PIO 1 Port B Data Line 7 PIO 1 Port B Data Line 6 PIO 1 Port B Data Line 5 PIO 1 Port B Data Line 4 Real Time Clock Control Lines Real Time Clock Data Line Reset Signal Digital Ground External Battery Input Digital Ground RS 485 RS 485 Unregulated Voltage Input Digital Input Specifications 91 Jumper Configurations Table B 6 lists the jumper settings for the applicable BL1500 headers Table B 6 Standard BL1500 Jumper Settings Factory Default Header Description Connect for RS 232 programming mode remove for run mode Connect for flash EPROM Connected Connect for regular EPROM Connect for 28 pin EPROM Connect for 32 pin EPROM Connected Connected 92 Specifications BL1500 ArPENDIX C INPUT OurPur MAP AND INTERRUPT VECTORS BL1500 I O Map and Interrupt Vectors 93 Memory Map Table C 1 provides the memory map for the flash EPROM and the SRAM Table C 1 Memory Map _memory Type Memory Type Low Address High Address Low Address High Address Flash EPROM 00000h 3FFFFh SRAM 80000h FFFFFh Input Output Map Other than peripherals on the Z180 the BL1500 has two byte wide devices PIO 1 and PIO 2 Table C 2
52. PLCBus CONNECTION BL1500 Simulated PLCBus Connection 121 PIO Port Connections Expansion Boards Expansion boards may be connected to header H3 on the BL1500 To add expansion boards the user must either make a custom cable or use an adapter board Z World part number 101 0050 To assist with making the connection via a custom made ribbon cable Table G 1 maps the signals from the controller s PIO to the expansion boards PLCBus header Dynam ic C s EZIOMGPL LIB for XP8900 Series expansion Boards or BL14 15 LIB library may be used for programming Table G 1 PIO to PLCBus Signal Map BL1500 Expansion Board H3 Pin No PIO Port Signal Pin No PLCBus Signal 1 vccesv 2 vccesv 2 PAO l 5 ISTBX 3 PAI 19 DOX 4 PA2 20 DIX 5 PA3 17 D2X 6 PA4 18 D3X 7 PAS u AIX 8 PAG l 9 A2X l 9 PAT l 7 A3X l 10 GND 10 GND The adapter board Figure G 1 provides an easy way to add an expansion board to BL1500 series controllers Power is supplied to the controller via the power jack and to the expansion board via a screw terminal The expan sion boards receive 12 V or 24 V from header J5 as shown when pins 1 2 on the adapter board s header J6 are not connected Connect pins 1 2 on the adapter board s header J6 to power the expansion boards from DCIN the BL1500 power supply Do not apply power to header J5 on the adapter board when pins 1 2 on
53. Port 0 Lowest Lowest Priority Serial Port 1 BL1500 I O Map and Interrupt Vectors 97 98 I O Map and Interrupt Vectors BL1500 D ArPENDix D PROTOTYPING BOARD Appendix D describes the BL1500 Prototyping Board BL1500 Prototyping Board 99 Prototyping Board The BL1500 Prototyping Board was designed to allow the user to experi ment with the BL1500 and to prototype small circuits that can piggyback on the BL1500 The Prototyping Board has several pre built subcircuits that can be tested or used as part of a custom design An array of uncom mitted pads facilitates prototyping Power rails bring 5 V and GND to these pads The Prototyping Board has the following features Direct Header Connections Header H1 on the bottom side of the Prototyping Board connects directly to header H3 ofthe BL1500 Array of Pads An array of pads for dual in line packages DIPs and discrete components is provided Pads and power rails are arranged and interconnected so that itis easy to place and connect 300 mil or 600 mil DIPs Extra Pads Extra pads bring out signals from header H1 on the Prototyping Board for easier soldering Figure D 1 illustrates the Prototyping Board LED Thermistor JP1 Pushbutton Switch Zjjooooooooo OOoooooooo oooo0oo0oo0o00000 oooo0oo0oo0o00000 oooo0oo0oo000000 OOOOOOOOOO0 eot eB H1 MD s 00000000000 26 pin o o 00000000000 Header T o 000
54. RS 232 port on Z180 Port 0 Reads and displays time from the real time clock Uses DMAO to send receive data from RS 232 Port 0 77 Reads data from BL1500 s onboard A D converter Computes averages and standard deviation of data from BL1500 s onboard A D converter s channels Calibrates the onboard A D converter channels Uses the CKAI clock and the DMAO as a pulse generator or crude DAC Services the power fail interrupt Monitors triggers the watchdog timer Uses PIO 1 A2 in mode 3 bitwise I O with interrupt Uses PIO Number 1 A2 in mode 3 bitwise I O with no interrupt Software Reference 78 Software Reference BL1500 ArPENDIX A TROUBLESHOOTING Appendix A provides procedures for troubleshooting system hardware and software Sections include the following topics Outofthe Box Dynamic C Will Not Start Dynamic C Looses Serial Link BL1500 Repeatedly Resets Common Programming Errors BL1500 Troubleshooting 79 Out of the Box The items listed below should have been checked before beginning devel opment However rechecking may help to solve a problem occurring dur ing development Verify that the BL1500 runs in standalone mode before connecting any expansion boards or I O devices Verify that the entire host system has good low impedance separate grounds for analog and digital signals Often the BL1500 is connected between the host PC and another device Any differences in
55. Using Unconditioned Converter Channels Two additional input channels of the A D converter AD2 and AD3 are available at pins 15 and 16 on header H1 These channels can be accessed with software by inserting the appropriate channel number in the library functions that control the A D converter Resistors RO and R1 10 KQ pullup resistors inside resistor network RN3 are connected to these two A D channel inputs to ensure that the inputs do not float if no input signals are present These pullup resistors can also be used as excitation resistors if the sensor or transducer being used needs a resistor connected to the voltage supply Each input also has a 330 Q series resistor in place to guard against latch up in the A D converter This value is within the 1000 Q maximum source driving re sistance that the A D con verter manufacturer specifies as being adequate to charge the converter s internal sam ple and hold capacitors Figure 3 14 illustrates these additional A D converter in put channels 46 Subsystems 5 V RNB pin 2 10 ko AIN2 nas U15 3 R5 330 Q 5 V RN3 pin 1 10 KQ AIN3 ae U15 4 330 Q Figure 3 14 A D Converter Input Channels AD2 and AD3 BL1500 To prevent latchup note the following important guidelines 1 Do not apply voltages to the A D converter s inputs greater than VCC or less than GND 2 Do not apply input voltages to the BL1500 s A D channels before powering up
56. able in mode 3 only Bits 7 4 of Port B are always available Bit 3 EOCNMI is the logical conjunction of NMI and EOC Bit 2 ADDOUT bit 1 ADDIN and bit 0 ADCLK are hard wired to the A D converter Power up PIO Configuration On power up the BL1500 s onboard Dynamic C BIOS configures both PIOs Ports A and Ports B to mode 3 bitwise I O mode with all bits as inputs 62 Software Reference BL1500 Input Output Software A choice of I O routines is available A complete subset of I O routines maintains and uses shadow registers PIOCAShadow and PIOCBShadow for PIO 1 and PIOCA2Shadow and PIOCB2Shadow for PIO 2 Shadow Registers Shadow registers are a standard embedded systems programming tech nique Some of the functions that manipulate the hardware I O ports automatically keep a copy of each register s current configuration If writing routines especially interrupt service routines that temporarily change the configuration of any hardware I O port the interrupt routines first save the appropriate shadow registers before changing the ports and then restore the ports to their original configuration before exiting using the saved contents of the shadow registers Function Prototypes The following function descriptions follow standard C notation for function prototypes Function prototypes are not examples of how to use a given function Instead they modify the names parameters and arguments of functions
57. amming through the special programming port leaving both serial channels available for applications 128K or256K flash EPROM can be factory installed 128K EPROM Real time clock provides time and date functions and a 31 byte scratchpad RAM The RTC reserves two digital I O lines leaving 24 I O lines for use by the application This feature is standard on the BL1500 but can be added to the BL1510 and BL1520 models Software Development and Evaluation Tools Software for the BL1500 is developed using Dynamic C Z World s real time C language development system Dynamic C for the BL1500 runs under Windows on a PC When a program compiles the host PC downloads the executable code via the BL1500 s RS 232 port directly to the onboard flash EPROM This feature allows fast in target development and debugging Another method for downloading programs from a host PC to a BL1500 is via a Z World Serial Interface Board 2 By using the optional SIB2 the RS 232 port is left free for other applications The BL1500 supports up to 256K of electronically re programmable flash EPROM Flash EPROM allows programs to be downloaded into nonvola tile memory without using an EPROM burner enr Z World s Dynamic C reference manuals provide complete software function descriptions and programming instructions 14 Overview BL1500 CHAPTER 2 GETTING STARTED Chapter 2 provides instructions for connecting the BL1500 to a host PC and running a
58. and Sample Programs Dynamic C provides libraries and software samples Table 5 3 lists and describes the Dynamic C LIB subdirectory Table5 3 Support Libraries Library Description 20232 LIB RS 232 library for Z180 Port 0 l BL14_15 LIB Low level drivers for the BL1500 MODEM232 LIB Miscellaneous functions common to the other communication libraries NETWORK LIB RS 485 9 bit binary half duplex support for Port 1 Table 5 4 lists and describes sample programs in the Dynamic C SAMPLES NETWORK subdirectory Table 5 4 Sample Programs in SAMPLESNNETWORK master Program Description CZOREM C Sample master program using Z180 Port 0 as the ZOREM C RS 232 communication port CSREMOTE C Sample slave program It talks with the master SREMOTE C running with CZOREM C ZOREM C RS 232 C Simple RS 232 sample program RS 485 C Simple slave program to talk with a running Table 5 5 lists and defines sample programs for the Prototyping Board These programs can be found in the Dynamic C SAMPLES MICROG subdirectory Table 5 5 Sample Programs in SAMPLES MICROG Program Description MGSCAN1 C Scan the I O of the BL1500 Prototyping Board using inport and outport MGSCAN2 C Scan the I O of the BL1500 Prototyping Board using resPIODA and setPIODA MGSCAN3 C Scan the I O of the BL1500 Prototyping Board using virtual I O 76 Software Reference BL1500 Table 5 6 lists and describes sample progra
59. annel 0 as an example measure the voltage of VREF pin 17 on header H1 and the voltage at VRO see Figure 3 13 ain VOUT VRO 3 6 VRO i Because the current into the op amp input is negligible the resistance ratio of the two resistors in the voltage divider alone determines VRO Once both the value of the installed resistor and the value of VRO are known compute the value of the fixed resistor in the divider Calibrating the A D Converter The inherent component to component variations of 5 or 1 resistors can swamp the 0 25 resolution of the A D converter To achieve the highest accuracy possible calibrate the BL1500 The software drivers for the A D converter provide routines to compute calibration coefficients given two reference points and store them in a defined location in nonvolatile memory Each reference point is determined from the following pair of values 1 The actual applied test voltage 2 The raw converted A D value a 12 bit integer Dynamic C automatically uses these coefficients to correct all subsequent A D readings BL1500 Subsystems 45 Dynamic C automatically uses these coefficients to correct all subsequent A D readings Table 3 8 lists the addresses in simulated EEPROM where the calibration constants are stored Table 3 8 A D Converter Calbration Constants Address in Simulated EEPROM 10 15 A DChannel Channel 0 16 21 22 27 1 3 28 33
60. assistance call a Z World Technical ry Support Representative at 530 757 3737 130 Simulated PLCBus Connection BL1500 Dj NO EN A ArPENDIx H POWER MANAGEMENT Appendix H provides detailed information on power systems and sources Sections include the following topics Direct Current Input Power Regulator e Power Failure BL1500 Power Management 131 Direct Current Input During software development power 9 V to 12 V DC comes through the DC input jack of the Prototyping Board In the absence of this board for example when system development has been completed power for the BL1500 must be applied to pin 25 on header H3 Power Regulator The BL1500 has an onboard 5 V linear regulator that accepts an input voltage of9 V to 12 V DC The BL1500 itself draws approximately 80 mA The regulator has some excess capacity to power expansion boards or external loads The regulator package is a TO 220 rated for 1 0 W at an ambient temperature of 70 C without additional heat sinking Heat sinking can be enhanced by mounting the BL1500 so that the regula tor makes contact with a mounting stud and a metal chassis or plate Forced air cooling if available will dissipate additional power Maximum Power Dissipation The maximum allowable power dissipation ofthe onboard 5 V regulator at any ambient temperature is a function ofthe maximum junction temperature at which the regulator is operating If the maximum po
61. ate Only the first and last board on a multidrop RS 485 cable should have termination resistors Therefore when networking multiple boards on an RS 485 network remove resistor pack RP1 shown in Figure 4 6 from all boards in the network except for the first and last board of the network see Figure 4 5 RP1 x JP1 o i JP2 a Flash EPROM U6 O Taea eea a a a a e n a e E Figure 4 6 RP1 Termination Resistor Pack Location BL1500 System Development 57 58 System Development BL1500 CHAPTER 5 SOFTWARE REFERENCE The functions described in this chapter operate the BL1500 input output interfaces Most required functions are in the BL14_15 LIB library however others are found in the Dynamic C BIOS in the BL1500 s onboard flash EPROM Sections in this chapter include the following topics BL1500 Software Development Options Programmable Inputs Output Input Output Software Real Time Clock Software Analog to Digital Converter Drivers Controlling XP8300 with PIO 1 Port A and Port B Using a Liquid Crystal Display Using a Keypad with PIO Port A and Port B Nonvolatile Storage Support Libraries and Sample Programs Software Reference 59 Software Development Options BL1500 controllers use a flash EPROM for code development Two sizes of flash EPROM are available from Z World 128K and 256K Current technol ogy limits the size of flash EPROM in th
62. ay See LCD literal C term AAA 82 locations headers sarne aeae ass 88 mounting holes base plate sssse 87 Prototyping Board 86 low pass filter 104 BL1500 map flash EPROM 94 WO 24 eate ehe 94 IDemoty aiie ies 94 SRAM sseeseeeeee 94 mechanical dimensions 85 mechanical specifications 84 mg2adc compute 72 mg2adc_convert 71 mg2adc read 69 mg2adc_readcoef 71 mg2adc_sample 70 mg2adc set 70 mg2adc writecoef 71 mginit dac 127 mglatch dacl 127 mglatch dac2 127 128 mgplc dac board 127 mgplc poll node 126 mgplc poll relay 73 mgplc set relay 73 126 mgplcrly board 126 mgplcuio board 126 mgread12data0 125 mgreadl2datal 125 mgreadl2data2 125 mgreset pbus 73 125 mgrestore_pbus 125 126 mgsave pbus 125 126 mgset dacl 127 mgset dac2 eseese 128 mgsetl2adr 125 127 128 mgsetl2data 125 mgwrite dacl 127 mgwrite dac2 127 128 mgwrite4data
63. ble with the keypad drivers in the following section That is both an LCD and a keypad can be driven with this software and a BL1500 void 1c char byte data Writes a character to the LCD void 1c ctrl byte cmd Writes a control command to the LCD void lc init Initialize the LCD and accessory variables The LCD uses PIO Port A void 1c cgram void ptr Loads up to eight special characters to the character generator of the LCD from the byte array p The first byte in the array 1s the number of bytes to store at 8 bytes per character with a maximum value of 64 for 8 characters The character codes for the special characters are 0 1 2 3 4 5 6 and 7 void lc printf char format This function works like printf but for the LCD The escape se quences shown in Table G 4 are also implemented The escape character code is 0x1B 128 Simulated PLCBus Connection BL1500 Table G 4 LCD printf Escape Sequences Command Result lt ESC gt 1 Turn cursor on lt ESC gt 0 Turn cursor off lt ESC gt c Erase from cursor to end of line ESC b Enable cursor blinking lt ESC gt n Disable cursor blinking lt ESC gt e Erase display and home cursor lt ESC gt pnmm Position cursor at line n column mm Using a Keypad with PIO Ports A and B Akeypad driver is implemented using PIO 1 Ports Aand B of the BL1500 The keys are scanned by forcing the driver lines low one at a time and sensing the key r
64. cognizes its own address and latches itself internally A typical device has three internal latches corresponding to the three address bytes The first is latched when a matching BUSADRO is detected The second is latched when the first is latched and a matching BUSADRI is detected The third is latched if the first two are latched and a matching BUSADRZ2 is detected If 4 bit addressing is used then there are three 4 bit address nibbles giving 12 bit addresses In addition a special register address is reserved for address expansion This address if ever used would provide an additional four bits of addressing when using the 4 bit convention If eight data lines are used then the addressing possibilities of the bus become much greater more than 256 million addresses according to the conventions established for the bus 112 PLCBus BL1500 Place an address on the bus by writing bytes to BUSADRO BUSADRI and BUSADR2 in succession Since 4 bit and 8 bit addressing modes must coexist the lower four bits of the first address byte written to BUSADRO identify addressing categories and distinguish 4 bit and 8 bit modes from each other There are 16 address categories as listed in Table F 3 An x indicates that the address bit may be a 1 or a 0 Table F 3 First Level PLCBus Address Coding First Byte Mode Addresses Full Address Encoding 000 4bitsx3 256 0000 xxxx xxxx 001 256 0001 xxxx xxxx 010 256 001
65. cted the maximum input voltage Va determines the maximum input voltage seen at the amplifi er s summing junction inverting input circuit nodes VRO and VR1 Com pute VRO or VR1 using Equation 3 4 g VRO Vy x l 34 IN max f g The bias voltage V pias must equal its corresponding VRn for each op amp A voltage divider comprising a bias resistor R R12 or R14 and a fixed 10 KQ resistor R22 or R24 derives this bias voltage V pias VRO or VR1 from VREF the 2 5 V reference voltage Equation 3 5 gives R BIAS _ Vpras X10 KQ 3 5 BAS OES NN The 2 5 V term in the Equation 3 5 denominator is the reference voltage The low impedance voltage reference supplies this voltage when the BL1500 is in the absolute conversion mode When the BL1500 is being used in the ratiometric mode the optional resistive divider R9 R10 supplies this voltage But in this case the op amp s bias resistors R12 R22 R14 and R24 load the divider more correctly the bias resistors are in effect part of the divider in parallel with R10 Therefore first compute values for R12 R22 R14 and R24 assuming that VREF is 2 5 V Then compute the required values of R9 and R10 that derive a reference voltage of 2 5 V while taking into account the resistance of R12 R22 R14 and R24 Unipolar Variation Suppose the input range is 0 V to 10 V instead of 5 V to 5 V Vy is now 10 V V becomes 2 0 V and R
66. d an input that exceeds the limits Data Conversion The two conditioned inputs measure input signals over either a bipolar or a unipolar voltage range In either case the operational amplifier s gain and bias resistors scale the signal ranges to conform to the 0 V to 2 5 V input range of the A D converter The inverting configuration of the op amps means that the maximum input voltage results in a minimum input voltage at the converter The A D converter determines a 12 bit digital value representing the converted value of the input voltage An input voltage at the A D con verter equal to 0 V converts to all zeros and an input at 2 5 V converts to all ones Dynamic C functions return 16 bit sign extended values The functions return a reading appropriate to the unipolar or bipolar signals being measured based on the arguments supplied to the function Limitations on Output Range In actual practice the op amp outputs can only approach ground 0 V but cannot actually reach it The output low voltage limit is about 10 mV to 20 mV The practical effect of this limitation is that approximately 0 4 0 8 of the upper end of the input signal range is unusable For example if the input signal ranges from 0 V to 10 V the maximum useful input voltage is 9 92 V to 9 96 V BL1500 Subsystems 35 Low Pass Filter The 0 01 uF feedback capacitors C20 and C21 in the amplifier s circuits transform the amplifiers into low pass filters The
67. dress in bits 16 23 A 24 bit address may be passed to this function but only the last eight bits will be set Call this function only if the first 16 bits of the address are the same as the address in the previous call to set24adr LIBRARY DRIVERS LIB int read24data0 long address Sets the current PLCBus address using the 24 bit address then reads eight bits of data from the PLCBus with a BUSRDO cycle RETURN VALUE PLCBus data in lower eight bits upper bits 0 LIBRARY DRIVERS LIB e int read8data0 long address Sets the last eight bits of the current PLCBus address using address bits 16 23 then reads eight bits of data from the PLCBus with a BUSRDO cycle PARAMETER address bits 16 23 are read RETURN VALUE PLCBus data in lower eight bits upper bits 0 LIBRARY DRIVERS LIB void write24data long address char data Sets the current PLCBus address using the 24 bit address then writes eight bits of data to the PLCBus PARAMETERS address is 24 bit address to write to data is data to write to the PLCBus LIBRARY DRIVERS LIB void write8data long address char data Sets the last eight bits of the current PLCBus address using address bits 16 23 then writes eight bits of data to the PLCBus PARAMETERS address bits 16 23 are the address ofthe PLCBus to write data is data to write to the PLCBus LIBRARY DRIVERS LIB BL1500 PLCBus 119 120 PLCBus BL1500 APPENDIX G SIMULATED
68. e 8 EIEEIEFEIEIEIETEIETEIETEIETEIET SmE H1 Pin 1 of Prototyping Board H3 Pin 1 of BL1500 Top View Prototyping Board Side View BL1500 Controller Board mounted on Baseplate Figure 2 2 Prototyping Board Attachment to BL1500 A The Prototyping Board does not require jumpers on its header H2 Remove the jumpers that are shipped with the Prototyp ing Board 18 Getting Started BL1500 The Prototyping Board supplies power to the BL1500 Plug the power supply into the wall and connect it to the direct current input jack on the Prototyping Board The BL1500 is now ready for programming af Refer to Appendix D Prototyping Board for a full description and additional information When using the Prototyping Board during software development power 9 V to 12 V DC comes through the direct current input jack of the Proto typing Board In the absence of this board for example when you have completed system development apply power to pin 25 of header H3 Always connect the Prototyping Board as shown in Figure 2 2 Joining the board any other way could damage the BL1500 s components BL1500 Getting Started 19 Connecting the BL1500 to a Host PC The BL1500 can be connected to a host PC via the RS 232 port or via a SIB2 Although the ideal development method is with a SIB2 the RS 232 port is the BL1500 s onboard development serial port When a SIB2 is used th
69. e BL1500 series to a maximum of 256K Code can be developed on the BL1500 series by using either the RS 232 port or the Serial Interface Board 2 SIB2 port However the SIB2 port is a dedicated programming port and so using it for programming leaves the RS 232 port free for the embedded application Dynamic C Development Software Two versions of Z World s Dynamic C development software are currently available for the BL1500 running under Microsoft Windows Standard Maximum 80K of code This version of Dynamic C is suitable for programs up to 80K with limited access to extended memory you cannot declare data items in extended memory Deluxe Maximum 512K of code 512K of data This version supports programs up to 512K code and 512K data with full access to extended memory Dynamic C Manuals Z World offers three Dynamic C manuals for programming reference Dynamic C Technical Reference Dynamic C Application Frameworks Dynamic C Function Reference 60 Software Reference BL1500 Programmable Input Output The BL1500 has two PIO chips having a total of 32 individual digital pro grammable I O lines Table 5 1 lists the names that Dynamic C defines as macros in its software libraries These macros are the PIO I O data register and command register addresses Do not define these macros in your application Table 5 1 PIO Register Names Register Name Function PIOCA Command register for Port
70. e RS 232 port is available during development to compile and debug a program BL1500 connectors are not polarized or keyed Carefully observe connec tor orientation and pin alignment before making a connection and before applying power A All diagrams in this manual illustrate pin 1 of each connector as a solid black square Development Using the RS 232 Port Using the programming cable provided in the Developer s Kit connect the BL1500 to a host PC with the following steps Figure 2 3 illustrates the connection between the BL1500 and the host PC SIB2 Programming Port a Serial cable Z180 to PC rinnpmnnnnnnnnnnnnn Figure 2 3 RS 232 Programming Mode 1 Disconnect power source to the BL1500 2 Connect the RS 232 cable between the host PC s COM port and header H2 ofthe BL1500 Be careful to match the arrow on the connector to pin 1 of header H2 3 Connect a jumper between pins 1 and 2 of header J1 the SIB2 port 4 Reconnect power source The BL1500 is now ready for programming through the RS 232 port 20 Getting Started BL1500 Developing with Optional SIB2 Z World s SIB2 is an interface adapter useful for BL1500 software develop ment Contained in an ABS plastic enclosure the SIB2 is rugged and reliable Since the SIB2 permits the BL1500 to communicate with Dynamic C via the Z180 s rarely used clocked serial I O CSI O port the BL1500 s serial p
71. e developed on any ofthe BL1500 controllers in the target system without the need for expensive in circuit emulators or logic analyzers All BL1500s allow for protecting data in static RAM and the real time clock s contents with an external backup battery 2 5 V to 4 25 V DC Top View U1 HOEDBBBammmmE rd O Reg E LI Lr E oO Sum fuo b Z180 H o o H z E oon oo g 5 B E plot E Po di oof B E E o 0 B E HUnmuuuunmuuuuuu 5 Sf oomnnn 5 6 RP1 apio e H V9 une yP o o E gt a Flash EPROM w g PIO2 Bee g Us 7 H3 U7 U8 H o o HIR UE I o o O eee R12 R14 U15 U16 ADC UULU ME Dmm M rri 2 Im U14 RTC U13 E d u
72. ead lines A low level on a key read line indicates a key press Call the function 1e keyscan periodically to scan the keypad Debouncing is done by making sure a key is pressed for DebounceCount consecutive calls to lc_keyscan The debouncing number can be changed by redefining DebounceCount define DebounceCount nn If not redefined DebounceCount defaults to 20 If 1e keyscan is called every 25 ms and DebounceCount is 20 then a key has to be pressed for 20 x 25 ms 500 ms to be valid The keypad drivers are compatible with the preceding LCD drivers That is both an LCD and a keypad can be driven with this software on a BL1500 lc kxinit Initializes the keypad driver and accessory variables Define KEY4x6 somewhere at the start of the code if using a 4 x 6 keypad define KEY4x6 Otherwise the driver defaults to a 2 x 6 keypad int lo kxget int mode Obtains the key value from the FIFO keypad buffer If mode 0 the key value is removed from the buffer Otherwise the key value is left in the buffer In either case the function returns the key value or 1 if the keypad buffer is empty BL1500 Simulated PLCBus Connection 129 e void lc keyscan Scans the 4 x 6 or2 x 6 keypad A valid key has to be persistent for DebounceCount calls to 1c keyscan The function puts valid key presses into the keypad FIFO buffer The software will access these key presses using 1o kxget sz For more information or
73. eal time clock RTC PIO 2 lines P1B3 and P1B2 are available for use BL1500 Subsystems 27 PIO 2 Eight data lines from Port A and four lines from Port B are available for gen eral purpose I O functions The remaining four lines of Port B have been preassigned to the BL1500 s A D converter If an A D converter is not installed the four remaining lines are available for other functions Figure 3 3 illus trates each line location and Table 3 5 lists and de fines the signals and their function for specific pins PIO 2 ASTB U9 PB7 Figure 3 3 PIO 2 Line Map Table 3 5 PIO 2 Preassigned Analog to Digital Lines PIO 2 Port Signal Analog to Digital Function P2B3 EOCNMI End of Conversion and Power Fail Sense P2B2 ADDOUT P2B1 ADDIN Output Data Input Data and Commands Clock 28 Subsystems BL1500 H1 Signals Header H1 brings out the usable I O lines of PIO 2 plus the A D converter signals Table 3 6 lists and defines the usable I O lines and other signals for H1 P BL1500 1 2 3 4 5 6 7 8 9 Table 3 6 PIO 2 Signals on Header H1 H1 Pin Signal Signal Description EI 45V Regulated Power P2A0 PIO 2 Port A Data Line 0 P2AI PIO 2 Port A Data Line 1 P2A2 PIO 2Port A Data Line 2 P2A3 PIO 2 Port A Data Line 3 P2A4 PIO 2 Port A Data Line 4 P2A5 PIO 2 Port A Data Line 5 P2A6 PIO 2 Port A Data Line 6 P2A7 PIO 2 Port A Data Line 7 GROUND
74. er 104 DGanput e 19 102 dimensions ses 86 features cuando tt 100 GND 5 etse 100 101 je 18 LED Dic eet tern 103 LED A D E E 103 E EE E E 103 low pass filter 104 pad array ssssssssss 100 DOWGE ot een dte 101 102 power rails esses 100 power supply ssss 19 RG filter sss eeu 104 RS 485 signals 55 sample circuits 103 sample demonstration circuits SW essct rs 103 E A OO EE EE 103 switches esses 108 test pads ix aoo noseiaens 101 TP nete rer s 103 TPQ Seen na E 108 T PaE EE ne 103 TP4 deste mier hero 104 WPS sien e m 104 ERG entere ERR 103 TP onset eet PEERS 103 TPS ose ERE ien 103 TPO s eet reis 104 BL1500 pulse width modulation 104 PWM See pulse width modulation R B0 nid here e eder 46 RIS A seat e aie 30 RIO eres 37 42 RI 38 41 43 44 RIZ ove nte actus 38 40 42 44 RIS sedie 38 41 43 44 RIA eee 38 40 42 44 RID AE A A tem 30 RiGee at n desee 30 RIT EATE TE 31 R21 isaemarina 36 38 41 43 R22 deed 36 38 42 43 Riaan 36 38 41 43 ROA EEE 36 38 42 43 BS E E T E 34 8 EOE E ded eer 34 RO EAT E E TE T 37 42 teadl2data oih 117 Ra dI302 nn a 67 read24data osii 119 read4data esee 118 read8data sees 119 ReadBurst1302 67 reading data on the PLCBus
75. ering schemes 126 Simulated PLCBus Connection BL1500 int mgplc dac board int number Computes the physical address of an XP8600 or XP8900 expansion board from its board number The number must be from 0 to 63 Board number 0 corresponds to address 0x020 board number 63 corresponds to address Ox13F The return value has the third and the first nibbles interchanged Refer to the XP8600 and XP8900 User s Manual for details regarding devices and device numbering schemes ev void mginit dac Initializes an XP8600 or XP8900 expansion board on the PLCBus This function assumes that the board s address has been placed on the bus with mgset12adr void mgwrite dacl int value Writes the 12 bit integer value to Register A of DAC 1 of an XP8600 or XP8900 expansion board on the PLCBus This function assumes that the board s address has been placed on the bus with mgset12adr The an XP8600 or XP8900 expansion board does not produce a new conversion value until a call to mglatch dac1 is executed e void mglatch dacl Moves Register A data to Register B of DAC 1 of an XP8600 or XP8900 expansion board on the PLCBus The actual DAC 1 output is con verted from Register B This function assumes that the board s address has been placed on the bus with mgset12adr Be sure that Register A contains valid data See mgwrite dac1 above void mgset dacl int value Writes a 12 bit integer value to Register A then moves
76. eturns Vref Vref 2 chan 12 returns Vref chan 13 returns Vref All data defaults to 12 bits unipolar mode with the most significant bit first This function reads an A D converter channel in approximately 366 us if AdcPioNoLock is defined If AdcPioNoLock is not defined reading an A D converter channel takes approximately 436 us The lock prevents change in the state of the shared PIO port while the A D converter uses the PIO port If the PIO s other bits are only input ports then the lock is not necessary but an application should include following definition define AdcPioNoLock 1 BL1500 Software Reference 69 int mg2adc set int chan Sets up the A D converter to make readings from the specified chan PARAMETER chan ranges from 0 10 for the 11 physical A D chan nels Only the first four channels are brought out on header H2 for use Because of the A D converters combined read data setup channel cycle of operation this function also returns the previous reading The A D converter s internal reference voltages can also be read out by addressing virtual channels as shown below chan 11 returns Vref Vref 2 chan 12 returns Vref chan 13 returns Vref All data defaults to 12 bits unipolar mode with the most significant bit first This function sets reads in approximately 258 us if AdcPioNoLock is defined If AdcPioNoLock is not defined setting up an A D converter channel takes approximately 29
77. g each shift clock period the converter shifts in one bit of a command word into the converter over ADDIN This command word specifies the converter s next operation The PIO s ARDY line drives ADCS This line goes from a logic 1 to 0 during power on initialization as a result of putting Port A into mode 3 operation This transition is necessary for the chip to function properly After transition the line is left low 34 Subsystems BL1500 EOC comes in over PIO Port B data line 3 P2B3 which also senses NMI through the logic gate U7 NMI and EOC are not at a logic 0 level at the same time and the driver software can distinguish between them in context Library routines take care of all the low level details of communication with the A D converter automatically The protocol for controlling the serial A D converter is com A plex Z World strongly recommends using existing Dynamic C library functions to control the converter instead of writing your own functions Voltage Reference The A D converter s two reference inputs REF and REF establish the voltage limits for analog inputs that produce the maximum and minimum conversion values Inputs higher than REF return the maximum conver sion value and inputs less than REF return the minimum conversion value The A D converter has no out of range signal Software will not be able to distinguish between an input that is exactly at either limit of the voltage range an
78. g topics Interface Overview PIOs Programmable I O ICs Power Supervisor Integrated Circuit Serial Communication Ports Analog to Digital Converter Real Time Clock BL1500 Subsystems 23 Interface Overview This section describes the various interfaces ofthe BL1500 Figure 3 1 provides a block diagram reference of the available interfaces BL1500 Series i A D Analog Inputs External Battery Digital I O Digital I O Figure 3 1 BL1500 Interface Diagram 24 Subsystems BL1500 Programmable Input Output ICs PlOs The BL1500 uses two Zilog PIO ICs to provide digital I O signals 1 PIO 1 U2 2 and PIO 2 U9 Each PIO has two 8 bit parallel programmable I O ports called Port A and Port B Each line of a port can serve as an input or output in differ ent modes The signal nomenclature identifies the various ports and pins of the PIOs discussed in this section e P1A0 P1A7 are data lines 0 through 7 of PIO 1 Port A e P2B7 is data line 7 of PIO 2 Port B Drivers for PIO 1 do not indicate a PIO number Drivers for PIO 2 do indicate a PIO number PIO Modes of Operation There are four modes of operation for PIO Port A and Port B Port A of PIO 1 may operate in modes 0 1 and 3 but not in mode 2 Port A of PIO 2 operates in mode 3 bitwise I O only Likewise both PIOs of Port B operate in mode 3 bitwise I O only Table 3 1 and Table
79. h current on off signals to digital ground Specifications 89 Header H2 RS 232 Port Header H2 carries the RS 232 signals shown in Figure B 5 H2 1m o gt TX03 6 4 CTS RXO 5 9 6 RTS 7 9 9 8 GND 9 9 10 INT2 Figure B 5 Header H2 Signals Remember to place a jumper across pins 1 2 of header J1 when L using header H2 as a programming port This jumper configu ration enables the BL1500 to come up in RS 232 programming mode after power up If no jumper is present and the SIB2 is not connected the BL1500 comes up in run mode after power up and executes an application from EPROM The BL1500 in run mode will not respond to attempts to develop new applications using Dynamic C 90 Specifications BL1500 Header H3 PIO 1 RS 485 and Power Header H3 carries the I O signals for PIO 1 U2 RS 485 and power Table B 5 lists and defines the usable I O lines and other signals for H3 Table B 5 PIO 1 Signals on Header H3 Signal Signal Description H3 Pin Co 00 10 tn FW NY re c 23 24 25 dun ND t AR W 26 L Since the BL1510 and BL1520 do not have a real time clock RTC PIO 2 lines P1B3 and P1B2 are available for other use BL1500 45V P1A0 PIAI P1A2 P1A3 P1A4 P1A5 P1A6 P1A7 GROUND ARDY ASTB P1B7 P1B6 P1B5 P1B4 RTCCLK RTCDAT RESET GROUND VBAT GROUND RS 485 RS 485 DCIN GROUND Regulated Power PIO 1 Port A Data Line 0
80. ice may also be included on the label to protect your portion of the code Z World grants purchasers of the Dynamic C software and the copyrighted BL1500 EPROM permission to copy portions of the EPROM library as described above provided that 1 The resulting EPROMs are used only with the BL1500 manufac tured by Z World and 2 Z World s copyright notice is placed on all copies of the EPROM 54 System Development BL1500 Developing An RS 485 Network Any one of Z World s controllers can be a master or a slave While a network can have up to 255 slave controllers only one controller can be the master The two wire RS 485 serial port and Dynamic C allow network develop ment Header H3 provides a half duplex RS 485 interface The RS 485 signals are on pins 23 and 24 of header H3 and also on pins 23 and 24 of header H2 on the Prototyping Board see Figure 4 3 Prototyping Board BL1500 nr E dup sues i eje NR 260025 1 PORES we 29S s 2 3 Sele 2 o o i oo I oc RS 485 RS 485 RS 4859 O n3 4gs oo oo i 29 i Sol oo l l oo I oo i oo l oo l OO i oo I OOj i l oe es oo i ee exe e oo oo i H2 H3 i oo l oo i 6 005 4 6 5 l O 4 4003 j A 3 200m1 a H3 o I i H2 i Figure 4 3 Locations on RS 485 Signals on BL1500 The BL1500 and other controllers can be linked together over several kil
81. imulated EEPROM is available BL1500 Software Reference 71 int mg2adc_compute struct mg2adccoeff cnvrsn int datal float voltl int data2 float volt2 Computes the zero offset and invgain constants of the structure mgadccoeff from two sets of converted data and known applied test voltages data1 volt1 and data2 volt2 RETURN VALUE 0 if the computation is successful 1 if the data used resulted in divide by zero 72 Software Reference BL1500 Controlling XP8300 with PIO 1 Port A Function Prototypes void mgreset_pbus Initializes PIO 1 Port A to communicate with one or more XP8300 expan sion boards and resets the XP8300 boards An application must call this function once before accessing any XP8300 int mgplc poll relay int addr Polls for the presence of an XP8300 board having the given board address 0 to 63 RETURN VALUE 1 ifthe board is found and 0 if the board is not found PIO 1 void mgplco set relay int number int relay int state Turn a relay on the selected XP8300 on or off The board s number must be from 0 to 63 PARAMETERS relay 0 5 selects the relay on the selected XP8300 state is to turn on the relay and 0 to turn it off PIO 1 BL1500 Software Reference 73 Nonvolatile Storage The topmost 512 bytes of BL1500 s flash EPROM are reserved as nonvola tile memory This area can be used to store important system state information such as A D conversion constants
82. lists each PIO s data and control registers Table C 2 PIO Data and Control Registers PIO Name Description Address PIODA Port A Data Register oocon PIO1 PIODB Port B Data Register oocin H3 PIOCA Port A Control Register 00C2h PIOCB Port B Control Register 00c3h_ PIODA2 Port A Data Register 0080h PIO2 PIODB2 Port B Data Register 0081h H1 PIOCA2 Port A Control Register 0082h PIOCB2 Port B Control Register 0083h 94 I O Map and Interrupt Vectors BL1500 The PIO and Z180 pins used for onboard housekeeping functions are listed in Table C 3 Table C 3 Dedicated PIO Pins Bit Usage PIODB O RTC Reset active low PIODB 1 RS 485 Transmitter Enable active high PIODB 2 RTC Data Input Output PIODB 3 RTC Clock PIODB2 0 ADC Clock PIODB2 1 ADC Data Out PIODB2 2 ADC Data In PIODB2 3 End of Conversion or Power Fail Output active low TENDI Toggle to Reset Watch INTI Watchdog Reset Status set if watchdog times out BL1500 I O Map and Interrupt Vectors 95 Interrupt Vectors Most interrupt vectors can be altered under program control The ad dresses are relative to the start of the interrupt vector page which is determined by the contents of the I register Table C 4 lists the default Address 0x00 0x02 0x04 0x06 0x08 Ox0A 0x0C OxOE 0x10 0x12 0x14 0x22 o4 Table C 4 Interrupt
83. lso have to be tied TX TX together A NULL connection is also GND o o GND required for the TX and RX lines RTS RTS However a commercia NULL modem CTS 5 CTS already has its CTS and RTS lines DTR tied together on both sides Figure 3 5 Connections Between Figure 3 5 illustrates the connections Controllar and Modem between a BL1500 and a modem The BL1500 supports the XMODEM protocol for downloading and uploading data Currently the library supports downloading an array of data in multiples of 128 bytes Uploaded data are written to a specified area in RAM The targeted writing area should not conflict with the current resident program or data Character echo is automatically suspended during XMODEM transfer A See Z World s Dynamic C reference manuals for details on software functions for modem communication BL1500 Subsystems 33 Analog to Digital Converter The optional BL1500 A D converter is a 12 bit serial I O switched capacitor successive approximation converter that can monitor tempera ture measure position or sense other types of analog signals In response to commands received from the Z180 via PIO 2 the A D converter s internal multiplexer samples and converts one input channel at a time Based on the A D converter s minimum conversion period the maximum data conversion rate is approximately 5 000 conversions per second Z World cannot guarantee this level of performance because application
84. ms in the Dynamic C SAMPLES BL14 15 subdirectory Table 5 6 Sample Programs in SAMPLES MICROG Program MG485MST C MG485SLV C MGCHRGER C MGDEMORT C MGFLASH C MGFLSHEE C MGLCD C MGLCDCG C MGLCDKEY C MGPIODAC C MGPIOMO C MGPIOM1 C MGPIOM3A C MGPIOM3B C MGPLCRLY C ndis mn MGRS232 C MGRTC C MGDMA232 C MGSADC1 C MG2ADC2 C me mna MG2NMI C MG2WDOG C MG2PIO3A C MG2PIO3B C BL1500 Description RS 485 master program that communicates to another BL1500 running MG485SLV C RS 485 slave program that communicates to another BL1500 running MG485MST C Charges a super capacitor or rechargeable battery 2 5 V 4 25 V DC with the DS1302 Demonstrates the real time kernel RTK for the BL1500 Writes and reads data from the RAM space of the DS1302 Stores data to flash EPROM initialized data space Writes and reads data from simulated EEPROM of the flash EPROM Uses PIO 1 Port A to drive an LCD Loads and uses special characters of the LCD Uses PIO 1 Port A and Port B to drive keypad and print to LCD Uses bit 2 of PIO 1 Port A as a simple 10 bit DAC Uses PIO 1 Port A in mode 0 strobed byte output Uses PIO 1 Port A in mode 1 strobed byte input Uses PIO 1 Port A in mode 3 bitwise I O Uses PIO 1 Port B in mode 3 bitwise I O Uses PIO 1 Port A to drive XP8300 expansion board U P ses PRTO to time square waves generated out of the IODA Uses
85. ng from x resistor variations o D 2 c o a z 0 BL1500 Input V Figure 3 12 A D converter Input Ranges Within Range Based on Resistor Variations A Use the mathematically derived values if the loss of signal range is acceptable 44 Subsystems BL1500 Confirm Performance If measurements are critical check the setups after installing resistors by measuring test signals at and near the input voltage limits See if the voltages fall within the A D converter s input range or if loss of accuracy occurs because of overexcursions at the A D converter s input Alterna tively measure the resistance of the factory installed fixed resistors before selecting and measuring your own resistors Fixed resistors can be measured indirectly after being installed by measuring the voltages at the amplifier s in puts and outputs Using Channel AINO VR1 0 as an example ground the input VRO R44 gi AMNI ADO at pin 20 of H1 Then mea sure the voltages at VRO and the amplifier s output The voltage test VRO R12 R14 GND points are shown in Figure 3 13 GND VR1 and their location on the BL1500 is shown in Figure 3 9 Figure 3 13 Voltage Test Points Because the currents through the input resistor and the feedback resistor are essentially identical the ratio of the voltages across the resistors 1s equivalent to the ratio of the resistors Therefore the gain is as displayed in Equation 3 6 Similarly again using Ch
86. nm Me Drnnnnnmmmmmm o Hi Drm U12 o o e RAM pnm i Lees OOOO pis bs oomoo OOOOO00000000000 RS 232 D Q 5 OoN o OU Q Bottom View Figure 1 1 BL1500 Board Layout 12 Overview BL1500 Features BL1500 Two Zilog PIO ICs for parallel or bit oriented digital I O 26 total digital I O lines plus handshake lines Socket for up to 256K flash EPROM Power supervisor IC consisting of watchdog timer power fail reset and RAM backup battery switchover Linear voltage regulator 5 V RS 232 serial channel e RS 485 serial channel Serial Interface Board 2 programming port Connection for external backup battery 2 5 V to 4 25 V DC on pin 21 of header H3 Keypad and LCD interface Areal time clock RTC which provides time and date functions and a 3 byte scratchpad RAM The RTC reserves two digital I O lines leaving 24 I O lines for an application s use e SRAM 128K Four channel 12 bit A D converter Two channels have onboard user defined signal conditioning and the other two are unconditioned BL1510 All features of the BL1500 except RTC Two additional PIO lines SRAM 32K BL1520 All features of the BL1500 except RTC and 12 bit A D converter Two additional PIO lines SRAM 32K GY Appendix B Specifications provides a complete list and description of BL1500 specifications BL1500 Overview 13 Options and Upgrades Serial Interface Board 2 SIB2 allows progr
87. ntil a new address is set A 12 bit address may be passed to this function but only the last four bits will be set Call this function only if the first eight bits of the address are the same as the address in the previous call to set12adr PARAMETER adr contains the last four bits bits 8 11 of the physical address LIBRARY DRIVERS LIB e char _eioReadDO Reads the data on the PLCBus in the BUSADRO cycle RETURN VALUE the byte read on the PLCBus in the BUSADRO cycle LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB char _eioReadD1 Reads the data on the PLCBus in the BUSADRI cycle RETURN VALUE the byte read on the PLCBus in the BUSADRI cycle LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB char _eioReadD2 Reads the data on the PLCBus in the BUSADR2 cycle RETURN VALUE the byte read on the PLCBus in the BUSADR2 cycle LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB e char readl2data int adr Sets the current PLCBus address using the 12 bit adr then reads four bits of data from the PLCBus with BUSADRO cycle RETURN VALUE PLCBus data in the lower four bits the upper bits are undefined LIBRARY DRIVERS LIB BL1500 PLCBus 117 char read4data int adr Sets the last four bits of the current PLCBus address using adr bits 8 11 then reads four bits of data from the bus with BUSADRO cycle PARAMETER adr bits 8 11 specifies the address to read RETURN VALUE PLCBus data in the lower
88. o be more economical and effective Additional testing or burn in of an individual unit is available by special arrangement Company Address H ZNNORLD Y Rabbit Semiconductor Inc Telephone 530 757 3737 2900 Spafford Street Facsimile 530 753 5141 Davis California 95618 6809 WebSite www rabbit com USA E Mail www rabbit com support TABLE OF CONTENTS About This Manual vii Chapter 1 Overview 11 OVetVIeW said doses eoe IER V 12 Eedat tes ninio eei nep aii 13 BE es a ERa 13 BETS1Q eei E A EU E da Rea esas 13 BEI520 tato ett es eR RO RR REPOS 13 Options and Upgrades ete RR l4 Software Development and Evaluation Tools susss l4 Chapter 2 Getting Started 15 Developer s Kit Packing List esssssesseeeeeeene 16 Installing Flash EPROM sese 17 Connecting the Prototyping Board to the BL1500 18 Connecting the BL1500 to a Host PC sse 20 Development Using the RS 232 Port eee 20 Developing with Optional Serial Interface Board 2 21 Establishing Communication essere 22 Running a Sample Program sse 22 Chapter 3 Subsystems 23 Interface Overview 5 denies pete eee eee 24 Programmable Input Output ICs PIOS esses 25 PIO Modes of Operation esses 25 gen 26 H3 Signalsai ete deett edepol 27 pp
89. o o JP1 o o m JP2 o EXE JP2 ER 28 pin EPROM 32 pin EPROM Figure 4 1 28 pin and 32 pin EPROM Placement Header JP1 reflects whether the EPROM is flash or non flash and header JP2 reflects the EPROM size as shown in Figure 4 2 JP1 3 2 1 non Flash 28 pin 32 pin EPROM EPROM EPROM Figure 4 2 BL1500 EPROM Jumper Configurations The BL1500 is able to handle both flash and non flash EPROM BL1500 System Development 53 Programming EPROM Dynamic C can be used to create a file for programming an EPROM by selecting the Compile to File option in the COMPILE menu with the flash EPROM in the Developer s Kit installed The BL1500 must be connected to the PC running Dynamic C during this step because essential library routines must be uploaded from the flash EPROM and linked to the resulting file The output is a binary file optionally an Intel hex format file that can be used to build an application EPROM The application EPROM is then programmed with an EPROM programmer that reads either a binary 1mage or the Intel hex format file The resulting application EPROM can then replace the flash EPROM Copyrights The Dynamic C library is copyrighted Place a label containing the following copyright notice on the EPROM whenever an EPROM that contains portions of the Dynamic C library is created 1998 Z World Your own copyright not
90. o support the BL1500 Use the supplied Z World cables The most common fault of user made cables is failure to properly assert CTS at the RS 232 port of the BL1500 Without CTS being asserted the BL1500 s RS 232 port will not transmit Assert CTS by either connecting the RTS signal of the PC s COM port or looping back the BL1500 s RTS If wiring up a DB9 connector or a RJ 12 connector to a 10 pin connector check the connections carefully The wires do not run pin for pin Note also that telephone company wiring does not really follow a standardized color code Experiment with each peripheral device connected to the BL1500 in order to determine how it appears to the BL1500 when powered up powered down and or when its connecting wiring is open or shorted 50 System Development BL1500 Operating Modes The BL1500 has two operating modes that are mutually exclusive Run Mode and Program Mode Each mode is explained in detail below Program Mode In Program Mode the BL1500 controller runs under the control of a host PC that is running Dynamic C The BL1500 must be in Program Mode when attempting to compile a program to it or to debug a program The BL1500 matches the baud rate of a PC s COM port up to A 57 600 bps Possible baud rates are 9600 bps 19 200 bps 28 800 bps and 57 600 bps Run Mode In Run Mode the BL1500 controller runs standalone Upon power up the BL1500 checks to see if its onboard memory contains a program
91. oard Headers BL1500 Prototyping Board 103 Buzzer The buzzer BZ1 is turned on when TP4 is brought to ground level G Buzzer Figure D 8 Prototyping Board Buzzer RC Filter The RC low pass filter consists of a 10 KQ series resistor and a 4 7 uF capacitor to ground A variable analog voltage is developed at TP9 by driving TPS with a pulse width modulated PWM signal TP5 E NANN E TP9 10 kQ I I 4 7 uF Figure D 9 Prototyping Board RC Filter Thermistor The Prototyping Board thermistor is not used with the BL1500 104 Prototyping Board BL1500 APPENDIX E SERIAL INTERFACE BoARD 2 Appendix E provides technical details and baud rate configuration data for Z World s Serial Interface Board 2 SIB2 BL1500 Serial Interface Board 2 105 Introduction The Serial Interface Board 2 SIB2 is an interface adapter used to program the BL1500 The SIB2 is contained in an ABS plastic enclosure making it rugged and reliable The SIB2 enables the BL1500 to communicate with Dynamic C via the Z180 s clocked serial I O CSI O port freeing the BL1500 s serial ports for use by the application during programming and debugging The SIB2 s 8 pin cable plugs into the target BL1500 s processor through an aperture in the backplate and a 6 conductor RJ 12 phone cable connects the SIB2 to the host PC The SIB2 automatically selects its baud rate to match the communication rates established by the host PC 9600 19 200 o
92. ollowed by a 4 bit data write to the control register The control registers are configured as follows bit 3 bit 2 bit 1 bit 0 A2 Al AO D The three address lines determine which output bit is to be written The output is set as either 1 or 0 according to D If the device exists on the bus reading the register drives bit 0 low Otherwise bit 0 is a 1 For digital input each register BUSRDO returns four bits The read register BUSRDI drives bit 0 low if the device exists on the bus 8 Bit Devices Z World s XP8700 and XP8800 expansion boards use 8 bit addressing Refer to the XP8700 and XP8800 manual Expansion Bus Software The expansion bus provides a convenient way to interface Z World s controllers with expansion boards or other specially designed boards The expansion bus may be accessed by using input functions Follow the suggested protocol The software drivers are easier to use but are less efficient in some cases Table F 5 lists the libraries Table F 5 Dynamic C PLCBus Libraries Library Needed Controller l DRIVERS LIB All controllers EZIOTGPL LIB BL1000 EZIOLGPL LIB BL1100 EZIOMGPL LIB BL1400 BL1500 EZIOPLC2 LIB BL1700 PBUS TG LIB BL1000 PBUS LG LIB BL1100 BL1300 BL1500 PLCBus 115 There are 4 bit and 8 bit drivers The 4 bit drivers employ the following calls void eioResetPlcBus Resets all expansion boards on the PLCBus When using this call make sure the
93. oltage reference These values which require standard 1 resistors have been adjusted from theoretical values to account for tolerance variations If one of these setups does not suit your application proceed to the next section and follow the design method presented there to calculate the resistor values required Table 3 7 Gain and Bias Resistor Input Voltage Ranges Input Range V Gain Rca KO Retas KQ 10 0 to 10 0 0 125 1 18 8 06 5 0 to 45 0 0 250 2 37 6 65 2 5 to 42 5 0 500 4 75 4 99 2 0 to 42 0 0 625 5 90 4 53 1 0 to 1 0 1 250 11 8 2 87 0 5 to 0 5 2 500 23 7 1 69 0 25 to 0 25 5 000 47 5 0 931 0 10 to 0 10 12 500 118 0 392 0 to 10 0 0 250 2 37 392 0 to 5 0 0 500 4 75 20 0 0 to 2 5 1 000 9 53 10 0 0 to 1 0 2 500 23 2 4 02 Setting Up Conditioned Inputs The gain and bias resistors R11 R14 determine the input signal s voltage relative to ground as well as its range For example assume a circuit must handle an input signal range of 10 V spanning 5 V to 5 V Given this specification note the following points regarding resistor sizing e Select the gain resistor Rc signal voltage range of 10 V R11 or R13 to suit your input Thegain ofthe amplifier is the ratio of its maximum output voltage swing to an application s maximum input voltage swing The fixed 2 5 V input range of the A D converter limits the op amp s output swings to 2 5 V
94. ometers When configuring a multidrop network use single twisted pair wires not stranded tinned on all controllers to connect RS 485 to RS 485 and RS 485 to RS 485 as shown in Figure 4 4 oe BL1200 485 Rxto 59700 BL1600 485 Tx o 485 BL1100 PK2200 485 Rx o 485 9 BI 1400 485 Tx om Pa ee Figure 4 4 Two Wire RS 485 Network Connections BL1500 System Development 55 Figure 4 5 provides a diagram of a two wire RS 485 network nnnnnonnnnn Sey H3 nnnm ununnnudd BL1500 ID od od B B B DEDIIIDIIUUGUUUNILI Ooo B UIDHUBUDDREE umurmuumu DDDDOEDODUDODEDDOD png 8 ME E UUUU P nnnnnnnnr BL1500 HH g a B 1 inni Ed D 3 EF BB g 5 unnnnamcnnanng punmuuunuuuu numum 4 Enable termination resistors only on the master controller and on the end controller Figure 4 5 BL1500 RS 485 Network 56 System Development BL1500 Termination and bias resistors are required in a multidrop network to mini mize reflections echoing and to keep the network line active during an idle st
95. ort is freed up The serial port can then be used by an application The SIB automatically selects its RS 232 baud rate to match certain commu nication rates established by the host PC through Dynamic C However the host s communication baud rate is determined only on the first com munication after reset To change baud rates first change the baud rate through the Dynamic C Serial option in the OPTIONS menu then reset the target BL1500 also resets the SIB2 then select Reset Target or Ctrl Y in Dynamic C The SIB2 automatically matches the baud rate of the host PCat 9600 bps 19 200 bps or 57 600 bps Follow these steps to connect a SIB to a host PC 1 Disconnect power to the BL1500 if connected 2 Connect the 6 conductor RJ 12 cable from the PC s COM port to the SIB2 3 Connect the SIB2 s small ribbon cable to header J1 on the BL1500 as shown in Figure 2 4 Match the arrow on the SIB2 connector to pin 1 of header J1 Never connect or disconnect T A the SIB2 when the power is T being applied Pin 1 Pins Z180 m T Marked f Conductor to Pin 1 Serial Interface EH Board 2 To Host PC ivortp Figure 2 4 Serial Interface Board 2 Connection to BL1500 4 Reconnect the power supply to the BL1500 The system is now ready for programming through the SIB2 BL1500 Getting Started 21 Establishing
96. ow registers All interrupts that use the bus save the four shadow registers on the stack Then when exiting the interrupt routine they restore the shadow registers and output the three address registers and the expansion registers to the bus This allows an interrupt routine to access the bus without disturbing the activity of a background routine that also accesses the bus To work reliably bus devices must be designed according to the following rules 1 The device must not rely on critical timing such as a minimum delay between two successive register accesses 2 The device must be capable of being selected and deselected without adversely affecting the internal operation of the controller Allocation of Devices on the Bus 4 Bit Devices Table F 4 provides the address allocations for the registers of 4 bit devices Table F 4 Allocation of Registers A1 A2 A3 Meaning digital output registers 64 registers 64 x 8 2 512 1 bit registers 000j 000j xxxj 000j 001j xxxj analog output modules 64 registers digital input registers 128 registers 000j Olxj I 128 x4 512 input bits 000j 10xj xxxj analog input modules 128 registers 000j 11xj XXX 128 spare registers customer 001 xxxj xxxj 512 spare registers Z World j controlled by board jumper X controlled by PAL 114 PLCBus BL1500 Digital output devices such as relay drivers should be addressed with three 4 bit addresses f
97. p powered down and or when its connecting wiring is open or shorted 80 Troubleshooting BL1500 Dynamic C Will Not Start In most situations when Dynamic C will not start an error message announcing a communication failure will be displayed The following list describes situations causing an error message and possible resolutions Wrong Baud Rate In rare cases the baud rate has to be changed when using the Serial Interface Board 2 for development Wrong Communication Mode Both sides must be talking RS 232 Wrong COM Port A PC generally has two serial ports COMI and COM2 Specify the one you are using in the Dynamic C Target Setup menu Use trial and error if necessary Wrong Operating Mode If the BL1500 s jumper is set for standalone operation you lose communication with Dynamic C Reconfigure the board for programming mode Wrong Memory Size Jumpers on headers JP1 and JP2 ofthe BL1500 specify the EPROM s size e Ifall else fails connect the serial cable to the BL1500 after power up If the PC s RS 232 port supplies a large current most commonly on portable and industrial PCs some RS 232 level converter ICs go into a nondestructive latch up Connecting the RS 232 cable after power up alleviates this problem Dynamic C Loses Serial Link Ifthe program disables interrupts for more than 50 ms Dynamic C will lose its serial link with your program Make sure that interrupts are not disabled for more than
98. r 57 600 bps However the SIB2 determines the host s communication baud rate only on the first communication after reset To change baud rates change the COM baud rate reset the target BL1500 which also resets the SIB2 by disconnecting and reconnecting the power supply then select Reset Target from Dynamic C Chapter 2 provides detailed information on connecting the SIB2 to the BL1500 The SIB2 receives power and resets from the target BL1500 via the 8 pin connector J1 Therefore do not unplug the SIB2 from the target BL1500 while power is applied To do so could damage both the BL1500 and the SIB2 additionally the target may reset N Never connect or disconnect the SIB2 with power applied to the controller The SIB2 consumes approximately 60 mA from the 5 V supply The target system current consumption therefore increases by this amount while the SIB2 is connected to the BL1500 106 Serial Interface Board 2 BL1500 External Dimensions Figure E 1 illustrates the external dimensions for the SIB2 Serial Interface Board 2 2 25 2 6572 orro Top View 12 0 3 60 91 4 0 8 20 1 525 i l 38 7 1 625 41 3 Side View Figure E 1 SIB2 External Dimensions BL1500 Serial Interface Board 2 107 108 Serial Interface Board 2 BL1500 Appennx F PLCBUS Appendix F provides the pin assignments for the PLCBus describes the registers and lists the software drivers BL1500 PLCBus
99. r The term addr is an absolute physical address To use this function allocate flash EPROM data in the Dynamic C program by declaring initialized variables or arrays or as initialized xdata For xdata the data name must pass directly to the following function xdata my_data 0 OxFF 0x08 WriteFlash my data my buffer my count For normal data the physical address of the data must pass to the following function char xxx 0 OxFF 0x08 WriteFlash phy adr xxx my buffer my count In order for this function to work some form of initialization has to be included when declaring the data If the data are not declared they will be placed in RAM instead of ROM and this function will not work Writing to read only memory may seem contradictory But flash EPROM despite its name is not really read only memory Writing to flash EPROM in essence treats the flash memory as a read write nonvolatile memory RETURN VALUES 0 if the operation was successful if no flash EPROM is present 2 if a physical address is within the BIOS area low 8K 3 if a physical address is within the symbol table 4 if the write times out Flash EPROM manufacturers rate their devices conservatively A at 10 000 writes In tests flash EPROMs can last for 100 000 writes When this limit is reached the system will begin to fail and the chip must be replaced BL1500 Software Reference 75 Support Libraries
100. re is sufficient delay between this call and the first access to an expansion board LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB e void eioPlcAdr12 unsigned addr Specifies the address to be written to the PLCBus using cycles BUSADRO BUSADRI and BUSADR2 PARAMETER addr is broken into three nibbles and one nibble is written in each BUSADRx cycle LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB void setl6adr int adr Sets the current address for the PLCBus All read and write operations access this address until a new address is set PARAMETER adr is a 16 bit physical address The high order nibble contains the value for the expansion register and the remaining three 4 bit nibbles form a 12 bit address the first and last nibbles must be swapped LIBRARY DRIVERS LIB e void setl2adr int adr Sets the current address for the PLCBus All read and write operations access this address until a new address is set PARAMETER adr is a 12 bit physical address three 4 bit nibbles with the first and third nibbles swapped LIBRARY DRIVERS LIB void eioPlcAdr4 unsigned addr Specifies the address to be written to the PLCBus using only cycle BUSADR2 PARAMETER addr is the nibble corresponding to BUSADR2 LIBRARY EZIOPLC LIB EZIOPLC2 LIB EZIOMGPL LIB 116 PLCBus BL1500 void set4adr int adr Sets the current address for the PLCBus All read and write operations access this address u
101. rence Manual by Harbison and Steel Knowledge of basic Z80 assembly language and architecture Gv For documentation from Zilog refer to the following texts Z180 MPU User s Manual Z180 Serial Communication Controllers Z80 Microprocessor Family User s Manual BL1500 About This Manual vii Acronyms Table 1 lists and defines the acronyms that may be used in this manual Table 1 Acronyms Acronym Meaning EPROM Erasable Programmable Read Only Memory EEPROM Electronically Erasable Programmable Read Only Memory LCD Liquid Crystal Display LED Light Emitting Diode NMI Nonmaskable Interrupt PIO Parallel Input Output Circuit Individually Programmable Input Output PRT Programmable Reload Timer RAM Random Access Memory RTC Real Time Clock SIB Serial Interface Board SRAM Static Random Access Memory UART Universal Asynchronous Receiver Transmitter Icons Table 2 displays and defines icons that may be used in this manual Table 2 Icons Icon Meaning Icon Meaning Zu Refer to or see L Note a Please contact T p Tip A Caution A High Voltage m Factory Default viii About This Manual BL1500 Q Conventions Table 3 lists and defines the typographic conventions that may be used in this manual Table 3 Typographic Conventions Example Description while Courier font bold indicates a program a fragment of a program or a Dynamic C
102. rn from Nonmaskable Interrupt instruction 136 Power Management BL1500 Recommended Power Failure Routine Z World recommends the following routines to handle an NMI The routines monitor the state of the PFO line via U7B PIO 2 and the data bus to determine if the brownout condition 1s continuing or if the power has returned to normal levels If this routine is used you will never have to worry about multiple power failure NMlIs because the routine never returns from the first NMI unless the power returns char dummy 24 define NMI BIT 3 reserve dummy stack for NMI processing routine will test data bit 3 to determine state of NMI line JUMP_VEC NMI VEC myint asm myint ld sp dummy 24 force stack pointer to top of dummy array to prevent overwriting of code or data do whatever service within allowable execution time loop call hitwd make sure no watchdog reset during brownout load the read NMI register to be read the read NMI register to PFO check PFO status wait until brownout condition clears then a tight loop to force a watchdog timeout which will reset the Z180 ld bc NMI in a c bit jr NMI BIT a z loop timeout jp timeout endasm BL1500 Power Management 137 If the DC input voltage continues to decrease the controller powers down The routine calls hitwd to make sure that watchdog does not
103. s e AT attention line open drain that may be pulled low by any device causing an interrupt The PLCBus may be used as a 4 bit bus DOX D3X or as an 8 bit bus DOX D7X Whether it is used as a 4 bit bus or an 8 bit bus depends on the encoding of the address placed on the bus Some PLCBus expansion cards require 4 bit addressing and others such as the XP8700 require 8 bit addressing These devices may be mixed on a single bus BL1500 PLCBus 111 There are eight registers corresponding to the modes determined by bus lines AX A2X and A3X The registers are listed in Table F 2 Table F 2 PLCBus Hegisters Register Address A3 A2 A1 Meaning BUSRDO CO 0 0 0 Read data one way BUSRDI C2 0 0 1 Read data another way BUSRD2 C4 0 1 0 Spare or read data Read this register to PUSBESEL ES 0 l l reset the PLCBus BUSADRO C8 1 0 0 First address nibble or byte BUSADRI CA 1 0 j Second address nibble or byte BUSADR2 CC 1 1 0 Third address nibble or byte BUSWR CE 1 1 1 Write data Writing or reading one of these registers takes care of all the bus details Functions are available in Z World s software libraries to read from or write to expansion bus devices To communicate with a device on the expansion bus first select a register associated with the device Then read or write from to the register The register is selected by placing its address on the bus Each device re
104. se filters attenuate any high frequency noise that may be present in a signal The filter character istics depend on the resistors selected The 3 dB corner frequency is 1 E 2axR X0 01 UF fap 3 1 For the above case with a gain of 0 25 using a 1 feedback resistor of 2370 Q the 3 dB corner frequency is 6715 kHz Internal Test Voltages By addressing virtual channels in the A D converter Dynamic C routines can obtain internal test voltages from the A D converter However these readings measure VREF and VREF with respect to VREF and GND so that the resulting conversions are all Os or all 1s Drift The AD680JT voltage reference exhibits a voltage drift of 10 ppm C typ to 30 ppm C max This drift corresponds to 25 uV C to 75 n V C or 1 75 mV to 5 25 mV over the temperature range of 0 C to 70 C The LMC662C operational amplifier exhibits an offset voltage drift of 1 3 pV C typ or 910 uV over the temperature range A greater contribution to overall drift arises from differences in the temperature coefficients of the user installed gain and bias resistors and the fixed 10 KQ resistors R21 R24 Resistors R21 R24 have temperature coefficients of 200 ppm C Because they are small surface mount resistors and are close to each other they are always at essentially the same temperature and their temperature deviations track closely Absolute and Ratiometric Modes The A D converter can operate in ei
105. so that the BL1500 can recover from power outages To ensure compatibility with Z World s product line the nonvolatile storage area simulates the EEPROM that certain Z World controllers use for nonvolatile storage The high level Dynamic C functions are exactly the same for all versions of all Z World s controllers These drivers automatically take care of all low level differences between physical memory devices Thelogical addresses ofthe simulated EEPROM are 0x0000 to 0x0511 Dynamic C BIOS reserves flash EPROM location 0 to store the operation mode and location 1 to store the baud code The remaining locations are available for your use Table 5 6 gives the EEPROM constants that apply to the installed flash EPROM Table 5 2 Flash EPROM Simulated EEPROM Constants Address Definition 0x000 Startup mode if 1 enter program mode if 8 execute loaded program at startup 0x001 Programming baud rate in multiples of 1200 bps The factory default is 16 meaning 19 200 bps Function Prototypes e int ee rd int address Reads and returns data from flash EPROM storage location address RETURN VALUE 1 ifa non flash EPROM is used void ee wr int address int data Writes data to simulated EEPROM storage location address RETURN VALUE 1 ifa non flash EPROM is used 74 Software Reference BL1500 int WriteFlash unsigned long addr char buf int num Writes num bytes from buf to flash EPROM starting at add
106. st 4 bit nibble is transmitted last as BUSADR2 The third nibble is transmitted first as BUSADRO e void mgsetl2data int addr int data Writes data to the expansion board at addr Only the lowest four bits of data are useable for BUSWR e int mgreadl2data0 int addr Reads data with BUSRDO from the expansion board at addr The function result holds the data e int mgreadl2datal int addr Reads data with BUSRDI from the expansion board at addr The function result holds the data e int mgreadl2data2 int addr Reads data with BUSRD2 from the expansion board at addr The function result holds the data void mgwrite4data int value Writes the low 4 bits of value with BUSWR to an expansion board This function assumes that the expansion board s address has been placed on the PLCBus with mgset12adr e void mgreset_pbus Initializes PIO Port A to communicate with expansion boards The function also resets all expansion boards BL1500 Simulated PLCBus Connection 125 int mgplc poll node int addr Polls for the presence of an expansion board with the given board address The function returns 1 if the board is found and 0 if the board is not found void mgsave pbus Saves the current state of the PLCBus to the stack This function should only be called in tandem with mgrestore pbus Otherwise the stack will become unbalanced e void mgrestore pbus Restores the current state of
107. systems 47 48 Subsystems BL1500 4 CHAPTER 4 SYSTEM DEVELOPMENT Chapter 4 describes how to use and or implement features of the BL1500 Sections include the following topics BL1500 Starting Development Operating Modes Running a Program Standalone Returning to Programming Mode Developing a Communications Network System Development 49 Beginning Development Before beginning development check the following items Verify that the BL1500 runs in standalone mode before connecting any expansion boards or I O devices Verify that the entire host system has a good low impedance separate grounds for analog and digital signals Often the BL1500 is connected between the host PC and another device Any differences in ground potential from unit to unit can cause serious problems that are hard to diagnose Do not connect analog ground to digital ground anywhere Double check the connecting cables to ensure that none are plugged backwards into the BL1500 s headers Verify that the host PC s COM port works by connecting a good serial device to the COM port Remember that on a PC COM1 COM3 and COM2 COMA share interrupts User shells and mouse drivers in par ticular often interfere with proper COM port operation For example a mouse running on COMI can preclude running Dynamic C on COM3 Use the supplied Z World power supply If another power supply must be used verify that it has enough capacity and filtering t
108. tPIOCB venne eh 64 SetPIOCB2 nieren evident 65 SetPIODA gestes 63 SetPIODA2 esee 64 SetPIODB eerie 64 SetPIODB2 esee 65 shadow registers 63 114 Index 145 SIB2 eect ices 14 33 106 baud rate sss 106 dimensions sssss 107 DOWOGE 3 edere tengo oceans 106 software A D converter 0 cece 69 global structure 69 DAC board 127 128 WO ossis tete BR 63 keypad sss 129 E O D ssnesssns 128 129 libraries sess 112 PLGCBUS ets 112 read write memory 74 real time clock 66 global time and date structure PE 66 XP8300 sss B source C term USC zione tere a HERMES 82 special characters for LCD eee 128 specifications sss 83 electrical as sitoisi 84 environmental 8 mechanical sssss 8 stack DErOGOSSOE i5 eee ens 126 standby mode 135 super capacitor real time clock 68 system development 50 T A tests IRSE 138 iam oo DR RR 67 tm Wick AE EE eun 67 troubleshooting 79 baud Tate iin 8l cables i i dte 80 COM port eee 80 81 COMMUNICATION eeseees 81 expansion boards 80 146 Index troubleshoo
109. ted voltage falls below the battery s voltage 2 5 V to 4 25 V DC The power management integrated keeps RESET enabled until the regulated voltage drops below 1 V The power management integrated circuit ceases operating below 1 V and the portion of the circuit that is not backed by battery has already ceased functioning BL1500 Power Management 135 Figure H 2 illustrates the power failure sequence Power Fails Unregulated DC 9 0 8 0 7 0 6 0 5 0 Regulated 5 V Dropout Voltage 4 0 3 0 POWER SUPPLY V 2 0 1 0 lt _t gt 691 691 691 Asserts Asserts Ceases PFO RESET Operation TIME Figure H 2 Power Failure Sequence Multiple Power Line Fluctuations The power fail detection system can fail when multiple power fluctuations rapidly follow each other a common occurrence in the real world If the BL1500 s Z180 microprocessor receives multiple NMls it overwrites an internal register making a correct return from the first NMI impossible Depending on the number of fluctuations of the raw DC input and hence the number of stacked NMIs the microprocessor s stack could possibly overflow corrupting your program s code or data When the Z180 senses an NMI it saves the program counter PC on its processor stack copies the maskable interrupt flag IEF 1 to IEF2 and then zeroes IEF1 The Z180 restores IEF2 s saved state information when it executes a RETN Retu
110. tem Figure F 1 shows the pin layout for the PLCBus connector 110 PLCBus Eight channels of 12 bit D A converters GND O o 25 VCC 5 V AOX O Oo 23 RDX LCDX O Oo 21 WRX D1X Oo o 19 DOX D3X O o 17 D2X D5X oO o 15 D4X D7X O o 13 D6X GND o o 11 A1X GND ool 9 A2X GND ool 7 A3X GND o o 5 strobe STBX 24 V OO S3 attention AT 5 V VCC om GND Figure F 1 PLCBus Pin Diagram BL1500 Two independent buses the LCD bus and the PLCBus exist on the single connector The LCD bus consists of the following lines e LCDX positive going strobe RDX negative going strobe for read WRX negative going strobe for write AO0X address line for LCD register selection DOX D7X bidirectional data lines shared with expansion bus The LCD bus is used to connect Z World s OP6000 series interfaces or to drive certain small liquid crystal displays directly Figure F 2 illustrates the connection of an OP6000 interface to a controller PLCBus Yellow wire on top PLCBus Header Note position of connector relative to pin 1 From OP6000 KLB Interface Card Header J2 Pin 1 Figure F 2 OP6000 Connection to PLCBus Port The PLCBus consists of the following lines e STBX negative going strobe e AIX A3X three control lines for selecting bus operation DOX D3X four bidirectional data lines used for 4 bit operations D4X D7X four additional data lines for 8 bit operation
111. temporary low input voltage conditions or brownouts 30 Subsystems BL1500 Backup battery switchover The ADM691 switches the RAM over to battery power if VCC falls below the battery voltage VBAT 2 5 V to 4 25 V DC A Provide an external backup battery to take advantage of the backup battery switchover Resistor R17 prevents false resets when changing the battery with the power on BL1500 Subsystems 31 Serial Communication Ports Two Z180 serial ports support asynchronous communication at baud rates from 300 bps to 57 600 bps 1 PortO is a 5 wire RS 232 port with RTS and CTS 2 Port is ahalf duplex RS 485 port which provides half duplex asyn chronous communication over twisted pair wires to a distance of up to 4 kilometers Figure 3 4 illustrates the configuration of Port 0 and Port 1 TXDO TXDO RXDO RXDO RTSO RTSO CTSO CTSO TXD1 RXD1 TXD1 RS485 23 pioi 5 Figure 3 4 Serial Communication Port Configuration H3 RXD1 RS485 EN485 RS 485 Header H3 provides a half duplex RS 485 serial interface RS 485 is an asynchronous multidrop half duplex standard The BL1500 can be config ured to provide one channel of RS 485 communication with multidrop network capabilities The RS 485 signals are on pins 23 and 24 of header H3 and also on pins 23 and 24 of header H2 on the Prototyping Board Chapter 4 System Development describes how to configure eo a m
112. the PLCBus from the stack This function should only be called in tandem with mgsave pbus Otherwise the stack will become unbalanced void mgplc set relay int number int relay int state Turns a relay on an expansion board on or off The relay board must be a Z World XP8300 or XP8400 expansion board and its number must be from 0 to 63 The term relay selects the relay on the selected board 0 5 for XP8300 boards and 0 7 for XP8400 boards The term state is 1 to turn on the relay board and 0 to turn it off af Refer to the XP8300 XP8400 and SE1100 User s Manual for details regarding devices and device numbering schemes e int mgplcrly board int number Computes the physical address of a relay board from its board number The number must be from 0 to 63 Board number 0 corresponds to address 0x000 board number 63 corresponds to address Ox11F The return value has the third and the first nibbles interchanged Refer to the XP8300 XP8400 and SE1100 User s Manual for details regarding devices and device numbering schemes eo int mgplcuio board int number Computes the physical address of an XP8200 expansion board from its board number The number must be from 0 to 15 Board number 0 corresponds to address 0x040 Board number 15 corresponds to address 0x04F The return value has the third and the first nibbles interchanged Refer to the XP8100 and XP8200 User s Manual for details regarding devices and device numb
113. the adapter board s header J6 are connected 122 Simulated PLCBus Connection BL1500 BL1500 Power Supply Expansion Board Power Supply Adapter Board Om GND V BG J6 s s s EE s EEEERRRESERER H3 O BL1500 0000000000020 Ih OOD CO 7 Expansion Board O Figure G 1 Adapter Board Connections Liquid Crystal Displays and Keypads Liquid crystal displays LCDs can also be connected to the BL1500 s PIO 1 Port A on header H3 using the adapter board The LCD must be hard wired for writing only Table G 2 lists the wiring connections for LCDs Only the LCD s EN line is exclusive to the LCD RS and the other data lines can be shared with other devices The LCD busy flag is never checked Instead a 40 us software delay ensures that the LCD is not busy before writing to the LCD If either J2 or J3 on the adapter board is used some of the L signals on J8 are inaccesible J8 s RS 485 and RMI signals remain available Table G 3 lists the wiring connections for keypads BL1500 Simulated PLCBus Connection 123 Table G 2 PIO to LCD Signal Map BL1400 2 x 20 LCD _H3 Pin No H3 Pin No PIO Port Signal Pin No Signal EN VCC 5 V 2 VDD PA2 4 RS 5 PA3 6 EN 7 DBO l 8 DB1 9 DB2 l 10 DB3 l 6 PA4 11 DB4 7 PAS 12 DB5
114. the board 3 Do not apply analog signals to the BL1500 before it is powered up For optimum results drive the unconditioned channels with low impedance voltage sources Operational amplifiers are ideal for this purpose High impedance signals sources on the other hand are susceptible to coupled noise and distort when loaded by the 10 kW pullup resistors When designing the signal sources to drive the two channels be sure to consider whether the chosen amplifiers can handle the capacitance of the cable that connects to H1 Real Time Clock The BL1500 has a real time clock RTC However the RTC is an optional feature for the BL1510 and BL1520 The RTC U14 provides time and date functions plus 31 bytes of scratchpad RAM The RTC also has the following features Automatically adjusts the last date of the month for the number of days in a month and accounts for leap years Reports time in either 24 hour or 12 hour format a m or p m indicated e Anexternal battery 2 5 V to 4 25 V DC allows the RTC to retain its time and data when power fails The RTC has a trickle charge circuit to charge a rechargeable battery or super capacitors The trickle charge register controls the trickle charge circuit and disables the circuit on power up If you are using a nonrechargable battery to back up the RTC do not enable the trickle charge circuit Enabling the trickle charge circuit may cause the battery to explode BL1500 Sub
115. the data from Register A to Register B of DAC 1 ofa selected XP8600 or XP8900 expansion board This function assumes that the board s address has been placed on the bus with mgset12adr It combines the effect of mgwrite_dacl andmglatch_dacl void mgwrite dac2 int value Writes the 12 bit integer value to Register A of DAC 2 of an XP8600 or XP8900 expansion board on the PLCBus This function assumes that the board s address has been placed on the bus with mgset12adr The XP8600 or XP8900 expansion board does not produce a new conversion value until a call to mglatch dac2 is executed BL1500 Simulated PLCBus Connection 127 void mglatch dac2 Moves Register A data to Register B of DAC 2 ofan XP8600 or XP8900 expansion board on the PLCBus The actual DAC 2 output is con verted from Register B This function assumes that the board s address has been placed on the bus with mgseti2adr Be sure that Register A contains valid data See mgwrite dac2 above void mgset dac2 int value Writes a 12 bit integer value to Register A then moves the data from Register A to Register B of DAC 2 ofa selected XP8600 or XP8900 expansion board This function assumes that the board s address has been placed on the bus with mgset12adr It combines the effect of mgwrite dac2 andmglatch dac2 Using an LCD with PIO Port A A 4 bit LCD liquid crystal display driver is implemented through six bits of PIO 1 Port A The LCD drivers are compati
116. the threshold the ADM691 de asserts RAMCE to prevent spurious writing to the RAM Watchdog timer The watchdog timer cannot be disabled The watchdog timer guards against system or software faults If an application does not hit the watchdog timer at least every 1 0 seconds the watchdog timer resets the Z180 The supervisor s watchdog output WDO connects to the Z180 s INT1 interrupt line WDO is at logic zero level after a watchdog reset and at logic 1 after a power on reset To hit the watchdog timer make a call to the library function A hitwd This call makes a dummy one byte DMA transfer via DMA channel 1 which activates the DMA end signal TENDI hitting the watchdog timer Nonmaskable interrupt The ADM691 generates a nonmaskable interrupt NMI from its power fail output PFO for the microprocessor if the unregulated DC input normally 9 V to 12 V DC falls below 7 9 V This gives the BL1500 advanced warning of an impending power failure which allows it to execute shutdown rou tines The voltage divider R1 and R15 determines the power fail voltage level R16 introduces approximately 830 mV of hysteresis into the supervisor IC s sensing of the raw DC preventing noise on DCIN from generating repeated interrupts when the input voltage is low NMI also connects to Port B bit 3 of PIO 2 via U7B to allow your software to monitor the NMI line after the nonmaskable interrupt and to recover from
117. ther an absolute or a ratiometric mode In absolute mode the A D converter compares the input signal against an accurate stable onboard reference The onboard voltage reference is an AD680JT which has a drift specification of 10 ppm C typical In ratiometric mode both the reference voltage and the voltage for the sample are connected to the same power supply Because the reference voltage and the sample voltage experience the same power supply fluctuations the ratiometric mode minimizes errors in certain types of measurements specifically those measure ments where the BL1500 has to supply an excitation voltage to a bridge or transducer 36 Subsystems BL1500 The BL1500 s A D converter is factory configured to operate in the absolute conversion mode using a precision onboard voltage reference an AD680 UA oran LM385 U5 as shown in Figure 3 6 REF is hard wired to ground REF connects to one of two sources of 2 5 V 5 V R19 10 kQ Optional C gt 5ANA VREF Figure 3 6 Analog Reference in Absolute Conversion Mode UA or US may be removed and voltage dividing resistors R9 and R10 may be added to change the BL1500 to the ratiometric mode The axial lead resis tors at R9 and R10 form a voltage divider to supply REF Figure 3 7 shows the locations of the components to be changed and the resulting circuit is shown in Figure 3 8 For the ratiometric conversion mode you need to know the resistor
118. ting grounds sssssesseeeee 80 memory SIZE eeeeeeene 8l operating mode 81 power supply 0 0 cece 80 repeated resets suus 81 U UID uaa tetas 34 Ul ihe ctor ERIS 34 38 U2XPIO T ioter 25 iD AR OO OI HE 37 EE 37 WI site ots 30 35 U9 PIO2 i inotaen roe 25 unregulated input voltage 135 V VBA aan eme 30 31 NGG TAE L 123 MO EENE ED EROS 123 WRO dee RE 45 VREE i4 iieri teh din Rides 45 VSS Ha ERRORES 123 WwW wall power supply 19 watchdog timer 30 power on reset sss 30 writel2data 118 Writel302 RR 67 write24data sss 119 writeddata seess 118 write8data ss 119 WriteBurst1302 67 WriteFlash ssses 75 WriteRam1302 67 writing data on the PLCBus WERDE DINE 112 118 BL1500 X XMODEM file transfer protocol 33 XP8100 essen 110 XP8200 scetur eren 110 XP8300 sss 110 P8400 iecit i 110 XP8500 sss 110 XDP8600 tertie 110 XP8700 110 111 115 XP8800 4 iienedetzcse cies 110 115 XP8900 essere 110 BL1500 Index 147 148 Index BL1500
119. ultidrop network GY See Z World s Dynamic C reference manuals for details on master slave networking 32 Subsystems BL1500 RS 232 and Programming Ports Header H2 provides a 5 wire RS 232 interface that is used for programming However the BL1500 can be programmed without using the RS 232 port by using the Serial Interface Board 2 SIB2 By connecting a SIB2 to header J1 the Z180 port can be used for programming and debugging leaving the RS 232 interface available to an application during development Z World has RS 232 support libraries for the BL1500 s Z180 Port 0 Sup port for serial communication includes the following functions e Initializing the serial ports Monitoring and reading a private circular receive buffer Monitoring and writing to a private circular transmit buffer CTS clear to send and RTS request to send control XMODEM protocol for downloading and uploading data Amodem option An echo option Modem Communication Modems and telephone lines allow RS 232 communication across great dis tances A modem automatically scans character streams that are read from the receive buffer for modem commands The RS 232 library supports com munication with a Hayes Smart Modem or compatible modem Ifthe modem used is not truly compatible you musttie the CTS RTS and DTR lines Modem BL1500 on the modem side together Addi Side Side tionally the CTS and RTS lines on RX RX the BL1500 side a
120. ut V Figure 3 11 A D Converter Input Ranges Out of Range Based on Resistor Variation A deviation from nominal values in the bias network could skew the A D converter s input voltage away from a theoretically computed value For example a small positive or negative deviation of the bias voltage arising from variances in the resistive divider would offset the A D converter s input voltage This offset would be positive or negative tracking the deviation s sign and equal to the bias deviation multiplied by the amplifi er s gain plus one Both of these effects could occur in the same circuit BL1500 Subsystems 43 Pick Proper Tolerance Use care when compensating for any discovered discrepancies For example if standard 5 resistors are used for R11 R14 remember that their values are spaced approximately 10 apart L The tolerance is plus or minus 5 therefore any value calculated will be within plus or minus 5 of a standard value Ifa gain is too high by just a small amount then going to the next smallest standard 5 value could result in a decrease in gain approaching 10 The same caveat applies to the bias network Use 1 resistors to get a more precise choice of values Figure 3 12 illustrates the results of adjusting the resistor values so that the input to the A D converter stays within its specified range of 2 5 V a a a eee A D converter s input voltage limit 5 Op amp output voltage 2 deviation arisi
121. w That result is sent to PIOCB Active bits become output bits PIO 1 void setPIODB byte mask PIODB PIODB OR mask Active bits 1s of mask are set in the current output of PIODB PIO 1 void resPIODB byte mask PIODB lt PIODB AND NOT mask Active bits 1s of mask are reset in the current output of PIODB PIO 1 void setPIOCA2 byte mask PIOCA2 lt PIOCA2Shadow lt PIOCA2Shadow OR mask Active bits 1s of mask are set in PIOCA2Shadow That result is then sent to PIOCA2 Active bits become input bits PIO 2 void resPIOCA2 byte mask PIOCA2 PIOCA2Shadow PIOCA2Shadow AND NOT mask Active bits 1s of mask are reset in PIOCA2Shadow That result is then sent to PIOCA2 Active bits become output bits PIO 2 void setPIODA2 byte mask PIODA2 lt PIODA2 OR mask Active bits 1s of mask are set in the current output of PIODA2 PIO 2 void resPIODA2 byte mask PIODA2 PIODA2 AND NOT mask Active bits 1s of mask are reset in the current output of PIODA2 PIO 2 64 Software Reference BL1500 void setPIOCB2 byte mask IOCB2 lt PIOCB2Shadow lt PIOCB2Shadow OR mask Active bits 1s of mask are set in PIOCB2Shadow Active bits become input bits PIO 2 void resPIOCB2 byte mask PIOCB2 PIOCB2Shadow PIOCB2Shadow AND NOT mask Active bits 1s of mask are reset in PIOCB2Shadow That result is then sent to PIOCB2 Active bits become output bits PIO 2
122. wer dissipation is exceeded the regulator s junction temperature will rise above T max and the electrical specifications will not apply If the die temperature rises above 150 C the regulator will go into thermal shutdown The LM340 used by the BL1500 has a maximum junction temperature of 125 C The maximum power dissipation can be computed as follows cc Dad Puax 7E H 1 8roraL where Pax 1s the maximum power dissipation in watts Tx is the maximum junction temperature in degrees Celsius T is the ambient temperature in degrees Celsius O ora 18 the thermal resistance from the junction to the ambient air C W Thus 125 C 70 C 54 C W 1 019 W at 70 C Pmax 132 Power Management BL1500 In terms of the input voltage and current consumption of the board Puax Vx 5 xI H 2 where Vin is the input DC voltage to the board 9 V to 12 V and I is the current consumption of the board Heat Dissipation with the BL1400 Base Plate The junction to case thermal resistance 0 of the LM340 is 4 C W The thermal resistance 0 from the case to the top surface of the printed circuit board PCB is about 1 C W From the top surface to the bottom surface the three heat paths are the plating on the two 0 150 inch diamter holes and through the printed circuit board Assuming a solder lamination of 0 001 the heat resistance across one hole is approximated as follows 0 06 2 54x0 15x0 001x 2 x 3 4
123. with a C type specifier such as void byte and int In addition some function prototypes use dummy arguments for param eters When using these functions in an application program do not include the type specifiers instead replace the applicable dummy argu ments with your own defined arguments L In the following descriptions the term void means that the function returns no value Void cannot be used as an operand e void setPIOCA byte mask PIOCA PIOCAShadow PIOCAShadow OR mask Active bits 1s of mask are set in PIOCAShadow That result goes to PIOCA Active bits becomes input bits PIO 1 void resPIOCA byte mask PIOCA lt PIOCAShadow lt PIOCAShadow AND NOT mask Active bits 1s of mask are reset in PIOCAShadow That result is then sent to PIOCA Active bits becomes output bits PIO 1 void setPIODA byte mask PIODA PIODA OR mask Active bits 1s of mask are set in the current output of PIODA PIO 1 BL1500 Software Reference 63 void resPIODA byte mask PIODA PIODAAND NOT mask Active bits 1s of mask are reset in the current output of PIODA PIO 1 void setPIOCB byte mask PIOCB PIOCBShadow PIOCBShadow OR mask Active bits 1s of mask are set in PIOCBShadow That result is then sent to PIOCB Active bits become input bits PIO 1 void resPIOCB byte mask PIOCB lt PIOCBShadow lt PIOCBShadow AND NOT mask Active bits 1s of mask are reset in PIOCBShado

BL1500 - Digi International

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