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5082 User`s Manual

1. 2 Output 3 Gnd The following is an example circuit for the watchdog latch The LED could be replaced by a relay for driving devices that require higher voltage or current The SCR output used is a Trecor EB103B or a Motorola MCR100 4 Refer to the appropriate data sheets for maximum ratings Watchdog Timer 57 N C Switch OS V 3 Light or Buzzer Figure 11 1 E xample Watchdog Latch Circuit Watchdog Timer 58 Chapter 12 CALENDAR CLOCK DS 1216EM SMARTWATCH The Dallas DS 1216EM is a 28 pin DIP socket which contains a calender dock and a dual battery system with a minimum life of 5 years Accuracy of the clock is about 1 minute month at 25 C To install the DS 1216EM SmartWatch at U9 1 Remove the memory chip from socket U9 2 Install the DS 1216EM SmartWatch into socket U9 with the index mark pointing towards the 5082 gold contact fingers 3 Install the EEPROM into the top of the SmartWatch 4 The SmartWatch is shipped with its internal oscillator turned off to maximize battery life To turn it on type CONFIG CLOCK ON You need to do this only once 5 To test the clock type DATES 01 15 91 PRINT DATES 0 If the date prints out as shown below the clock is working properly OLA a oi Calendar Clock 59 6 You are now ready to set the time Use the TIME state ment as follows TIMES 11 23 45 To read the time type PRINT TIMES 0 NOTE W
2. current of 11 times that of their hot current It is recommended that lamps requiring more than 50 mA not be used When inductive loads are used protection diodes or other schemes must be used Supply amp i 1N4002 To High Current Output Figure 10 1 Inductive Load Protection Circuitry High Current Ports 55 Configuring outputs in parallel for higher drive is NOT recommended and could result in damage since the outputs will not share current equally If external devices such as 24 VDC relays are driven the ground of the external 24V supply must be connected to J 3 pin 26 and NOT the power ground Failure to do so will produce a ground loop within the 5082 and can cause erratic operation High Current Ports 56 Chapter 11 WATCHDOG TIMER The watchdog timer is a fail safe against program crashes or processor lockups The following table shows how to enable disable and reset the timer 5082 Watchdog Timer Command To enable OUT amp 60 0 To disable variables NP amp 60 To reset OUT amp 60 1 Once the watchdog time is enabled it must be reset at a maximum of 1 2 second intervals otherwise the system will reboot WATCHDOG LATCH A watchdog latch allows the addition of a buzzer or light in series with a button which can be reset should the watchdog timeout The latch is accessed through W3 5082 Watchdog Latch
3. rts loop 270 Program continues when receiver has detected RTS 300 Get COM3 CTS high 310 CTS is an output from the 5082 320 330 OUT amp E8 5 Indicates access to Z80181 reg 5 340 OUT amp E8 amp 6A Set bit 2 of Z80181 reg 5 high see amp 6A below Serial Ports 33 400 RTS detected CTS set high the program is ready to receive characters 410 420 GOSUB 1000 430 500 After characters are received CTS must be set low 510 Set COM3 CTS low 520 CTS is an output from the 5082 530 5s 540 OUT amp E8 5 Indicates access to Z80181 reg 5 550 OUT amp E8 amp 68 Set bit 2 of Z80181 reg 5 low see amp 68 below 560 GOTO rts loop 1000 Receive character subroutine 1010 1500 RETURN The following code is for additional control of COM3 control lines 2000 Set COM3 DCD low 2010 DCD is an output from the 5082 2020 2030 OUT amp E8 5 I ndicates access to Z80181 reg 5 2040 OUT amp E8 amp 68 Get bit 3 of Z80181 reg 5 low see amp 68 below 2100 Set COM3 DCD high 2110 DCD is an output from the 5082 2420 2130 OUT amp E8 5 Indicates access to Z80181 reg 5 2140 OUT amp E8 amp E8 Set bit 7 of Z80181 reg 5 high see amp E8 below 2200 Loop to monitor COM3 DTR 2210 DTR is an input to the 5082 2220 1 2230 OUT amp E8 15 Indicates access to Z80181 reg 15 2240 OUT amp E8 amp
4. you may have totie these signals to the appropriate levels Y ou may be able to ignore these lines in software Installation 15 The 5082 does not recognize the RTS line from the host to pace communications This is important if your terminal s communications become garbled or otherwise unreadable Most often this happens because the 5082 is continually sending out data and the receiving unit cannot handle all of it Please refer to Using Other Serial Communications Software in Appendix A for additional information Installation 16 Chapter 3 ADDING MEMORY INTRODUCTION The 5082 Microcontroller is shipped with a 32K static RAM anda 32K EEPROM in sockets U11 and U9 respectively This chapter describes these memory chips and how to add memory to the 5082 card To store information in RAM please see Chapter 4 To store programs in the EEPROM or to autorun programs see Chapter 5 TYPES OF MEMORY You can use 32K 128K or 512K RAM in your 5082 Microcontroller The RAM chip you select is installed in socket U11 RAM is used to temporarily store data variables and user programs It provides volatile memory storage unless you are using a battery backup the DS 1213D DM SmartSocket for example You can also download programs from your PC to RAM and load informa tion or programs from RAM back to your PC disk The 5082 supports a 32K EEPROM The EEPROM is used to store programs EEPROMs are nonvolatile and may be wri
5. 16 or MPB 24 mounting rack Digital I O Lines 43 You can also use a CMA 26 cable to connect J 2 and or J 3 on the 5082 to a STB 26 terminal board and then to the opto rack The STB 26 has two 26 pin connectors one of which plugs into J 2 3 the other plugs into the opto rack For either configuration run a separate line to 5V and ground on the opto module rack Use the following table to determine the corresponding opto channel for a particular port 5082 Opto Rack Interface INTERFACING TO SWITCHES AND OTHER DEVICES The STB 26 terminal board provides a convenient way of interfac ing switches or other digital 1 O devices to the 82C55 digital port on the 5082 Microcontroller All 82C55 lines have 10K pull up resistors I O lines at connector J 2 and or J 3 can be connected to the STB 26 with a CMA 26 cable Parallel I O devices are then connected to the screw terminals on the STB 26 Y ou can determine switch status as follows 300 D BIT 1 2 Status of the switch is returned in the variable D as a zero closed or a one open Digital I O Lines 44 COMMANDS The following is a list of the CAMBASIC IV commands used for digital I O 5082 Digital UO Commands Command Function BIT Function returns status of bit at LO address BIT Statement sets a bit to 0 or Lat an I O address CONFIG PIO Initializes 82C55 drivers CONFIG COUNT Configures an I O line for counter input CONFIG FREQ Sets the I
6. CAMBASIC IV tm c 1985 92 Octagon Systems Corporation V xx x all rights reserved Bytes free 33518 Example 2 Press the ESC key Preface 1 Italicized refers to information that is specific to your particular system or program for example Enter filename means enter the name of your file Warnings always appear in this format WARNING The warning message appears here Paired angle brackets are used to indicate a specific key on your keyboard for example lt ESC gt means the escape key lt CTRL gt means the control key lt 1 gt means the F 1 function key All addresses given in hexadecimal SYMBOLS AND TERMINOLOGY Throughout this manual the following symbols and terminology are used WI Denotes a jumper block and the pins to connect NOTE Information under this heading presents helpful tips for using the 5082 WARNING Information under this heading warns you of situations which might cause catastrophic or irreversible damage Autorun Automatic execution of a program on power up or reset Download Totransfer a program or data from a PC to the RAM on the 5082 also refers to loading the program stored in the EEPROM tothe RAM Preface 2 Free Memory Immediate Mode Industrial Command Extensions LCD Multidrop Network PC SmartLINK Reset System RAM TTL Compatible Upload XON XOFF The amount of memory available for program and data storage The sys
7. PRINTS Ae 5082 Serial 1 O Commands Function Resets serial input buffer Clears screen Returns string from autobuffer Sets serial port parameters baud rate start and stop bits parity and data length Sets serial input buffer Returns character from serial buffer Receives data from serial port Outputs program listing Enables serial tasking Outputs data through serial ports Prints formatted strings or number Prints list of numbers as characters Tabs to specified position Serial Ports 39 This page intentionally left blank Serial Ports 40 Chapter 7 DIGITAL UO LINES INTRODUCTION Digital I O lines can be used to interface with opto module racks operate switches turn on low current LEDs and interface with other devices that have TTL input or output for example printers and scales Figure 7 1 shows a typical opto rack configuration Tess s 5 7 9 m UH MW g eooeoocoeooooseq MA 26 Digital 1 0 Ribbon Cable Po MPB Opto Rack OR 8 E CMA 26 Se Ribbon Cable 5082 CH d Microcontroller UM V H CMA 26 T Ribbon Cable STB 26 Terminal Board Figure 7 1 T ypical Opto Rack Configuration Apply power to the 5082 Microcontroller before WARNING applying an input voltage to the digital I O lines This prevents excessive currents from flowing and damaging input devices ORGANIZATION OF CON
8. 500 After characters are received CTS must be set low 510 Set COM2 CTS low 520 CTS is an output from the 508X 530 540 BIT amp 80 4 0FF Reset bit 4 of port addr amp 80 550 GOTO rts loop Serial Ports 32 1000 Receive character subroutine 1010 1500 RETURN COMS J5 In addition to RTS and CTS COM3 also supports DTR and DCD The 5082 serial ports COM2 and COM 3 are configured as DCE Data Communication Equipment therefore RTS and DTR are inputs CTS and DCD are outputs On power up the 5082 does not enable the RTS CTS DCD or DTR control signals It is up tothe programmer to control these signals with CAMBASIC commands COM3 can also be configured for a baud rate of 19200 These special features make this serial port ideal for modem operations The following program is an example of how COM3 might be used in a typical application TQ x 80 The following program refers to COM3 only BO s 100 Set COM3 CTS low 110 CTS is an output from the 5082 120 130 OUT amp E8 5 Indicates access to Z80181 reg 5 140 OUT amp E8 amp 68 Set bit 2 of Z80181 reg 5 low see amp 68 below 200 Loop to monitor COM3 RTS 210 RTS is an input to the 5082 220 230 OUT amp E8 15 Indicates access to Z80181 reg 15 240 OUT amp E8 amp DO Enable bits 3 and 5 250 rte loop 260 RTS BIT amp E8 5 Monitor bit 5 of port address amp E8 270 IF RTS lt gt 1 THEN GOTO
9. 90 END CONNECTING A DISPLAY TO A 5600 DIGITAL UO CARD Y ou can also connect your display to the optional 5600 or 5600 48 Digital 1 O Expansion Cards with a LCD or DP IFB This is especially useful if you are using a keypad larger than 4x4 or want to use J 2 for something other than a display 1 Connect the cable induded with your display to the display and the IFB 2 Connect the cable induded with your keypad if you are using one to the keypad and the IFB 3 Connect a CMA 26 cable from the IFB to the 5600 port you want to use The 5600 has four 26 pin connectors All four are identical and all havethree ports A B and C Display Port 49 4 You are now ready to initialize the display 10 CONFIG PIO x 0 0 0 0 0 Config dig I O port x addr of port A 20 CONFIG DISPLAY x 6 y Config display type 30 A OCTAGON S BUILT IN Build display strings 40 B DISPLAY COMMAND 50 C IS EASY TO USE 60 DISPLAY 0 1 A Display strings 70 DISPLAY 1 1 B 80 DISPLAY 2 1 C 90 END Line 10 x specifies the address of the 5600 Card Port A Example CONFIG PIO amp 100 0 0 0 1 1 Line 20 x specifies the address of the 5600 Card Port A y specifies the type of cursor Example CONFIG DISPLAY amp 100 6 0 COMMANDS The following is a list of the CAMBASIC IV commands for the display 5082 Display Commands Function Command Specifies which multi line display you wan
10. DO Enable bits 3 and 5 if this is done earlier in the program it does not have to be repeated 2260 dtr loop 2270 DTR BIT amp E8 3 Monitor bit 3 of port address amp E8 2280 IF DTR lt gt 1 THEN GOTO dtr loop CTS and DCD are both affected by writing to register 5 Both can be controlled at the same time Serial Ports 34 amp 68 CTS and DCD low amp E8 CTS low and DCD high amp 6A CTS high and DCD low amp EA CTS and DCD high NOTE For further information on the Zilog Z80181 pro cessor please contact Zilog for the technical manual DC 2519 02 CHANGING THE SERIAL PARAMETERS AutoBaud on COM1 During program development when you power on the 5082 the system displays a nonsense message if the baud rate of your PC is not set to 9600 If you press the ESC key the autobaud feature automatically adjusts the baud rate to 300 1200 2400 4800 or 9600 and a communications link is established with your PC The autobaud feature also configures COM 2 to match the parameters of COM1 The serial parameters of COM3 are not affected by the autobaud feature CONFIG BAUD Command The default parameters for all ports are 9600 baud 8 data bits no parity and 1 stop bit The CONFIG BAUD command allows you to change these parameters to fit your application needs The following example shows a typical configuration 1 CONFIG BAUD a b c d a COM port b baud rate c of data amp stop bit
11. Lines eeeenenee 43 Example T 2 Digital I O ticiiccaindinainiddinig pev rie 43 Example 2 3 Digital HO 4 tte 43 Opto module Rack Interface 43 Interfacing To Switches And Other Devices A 44 Commands dieere et m e fined ee b e e d d 45 CHAPTER 8 DISPLAY PORT ener 47 Jeldge vie Le PER 47 Connecting A Display cniinn nne 48 Using ciiam tad na OR OE Ru MA 48 Bog 48 Connecting A Display To A 5600 Digital 1 0 CARD 49 COMMANA i cite rino Redi Erie p etr US DDR REDE 50 CHAPTER 9 KEYPAD PORT ee eennnnn 49 l a EEOCIUCEL OD is taii ip en rinde aE HERR DAEA 51 Connecting The Keypad NENNEN 52 Elle RR EE 52 USING V EE 52 Connecting The Keypad To A 5600 Digital 1 0 Card 53 COMMANGS EE 54 CHAPTER 10 HIGH CURRENT PORTS 53 Introducti OM M aa 55 Considerations For High Current Outputs 55 CHAPTER 11 WATCHDOG TIMER 57 Watchdog Latch EE 57 CHAPTER 12 CALENDAR CLOCK 59 DS 1216EM SmartWatch cierra cR 59 ebe AS EE 60 CHAPTER 13 INTERRUPT HANDLING 61 Jelgge elle Le qM tr EIE 61 Interrupt Generation niece or neni Rein le deas 61 Programming EXAMple nns 61 COMMANA S mem 62 APPENDIX A sstacassicassisnssssatacctasasrnciessacanepecsarinccacaniaasieas 61 Custom Communication Cable 2
12. active low Technical Data 75 Microcontroller Side B Bl GND B2 RESET B3 45V B4 IRQ2 B5 5V B6 DRQ2 B7 12V B8 Reserved B9 12V B10 Analog Gnd B11 MEMW B12 MEMR B13 low B14 IOR B15 DACK3 B16 DRQ3 O B17 O B18 l B19 l B20 Not used B21 Not used B22 Not used B23 Not used B24 l B25 Not used B26 Not used B27 Not used B28 O B29 o fex Not used B31 Not used DACKI DRQ1 DACKO CLOCK IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 DACK2 T C ALE Aux 45V OSC Aux Gnd Not used Not used Not used O Not used Not used Not used l l Not used Not used Not used Not used Not used active low Technical Data 76 WARRANTY Octagon Systems Corporation Octagon warrants that its stan dard hardware products will be free from defects in materials and workmanship under normal use and service for the current established warranty period Octagon s obligation under this warranty shall not arise until Buyer returns the defective product freight prepaid to Octagon s facility or another specified location Octagon s only responsibility under this warranty is at its option to replace or repair free of charge any defective component part of such products LIMITATIONS ON WARRANTY The warranty set forth above does not extend to and shall not apply to 1 Products including software which have been repaired
13. host sends a message in this format 03C4A52237 The colon indicates that this is a message for everyone in the network the 03 specifies which device actually needs to hear the message and the rest of the information is the actual data or instructions You can also have an identifier such as 00 that identifies the message for all devices in the network You can create your own protocol but it must be consistent throughout the network For example you could use the symbol gt instead of the colon To receive a string use the CAMBASIC IV commands CONFIG COM and ON COM The device will generate an ON COM interrupt when it receives a string from the host You may want to Serial Ports 36 use the LEFT function to capture the first three characters and to determine if those characters of the string match the particular device s address essentially parsing out the command If the first three characters match the device then the software parses the next character determines what it means moves to the next character and so on The MTB 485 automatically turns the transmitter on and off For more information on the MTB 485 please refer to the MTB 485 Product Sheet 5082 Micro PC Microcon Control troller Card MTB MTB with PC 485 card 485 485 Se i d Meter with RS 485 card with RS 485 Printer interface with RS 485 int
14. probable that multiple component failures indicate that they were user induced Testing dead cards For a card that is completely nonfunctional there is a simple test to determine accidental over voltage reverse voltage or other forced current situations Unplug the card from the bus and remove all cables Using an ordinary digital ohmmeter on the 2 000 ohm scale measure the resistance between power and ground Record this number Reverse the ohmmeter leads and measure the resistance again If the ratio of the resistances is 2 1 or greater fault conditions most likely have occurred A common cause is miswiring the power supply Improper power causes catastrophic failure f a card has had reverse polarity or high voltage applied replacing a failed component is not an adequate fix Other components probably have been partially damaged or a failure mechanism has been induced Therefore a failure will probably occur in the future For such cards Octagon highly recommends that these cards be replaced Other over voltage symptoms In over voltage situations the programmable logic devices EPROMs and CPU chips usually fail in this order The failed device may be hot to the touch It is usually the case that only one IC will be overheated at a time Power sequencing The major failure of I O chips is caused by the external application of input voltage while the Micro PC power is off If you apply 5V to the input of a TTL chip
15. re rns 63 Power Meller iternm iri ento ert end bra E Ee Y e ARE MEYER EAR IAE 63 Using Other Serial Communications Goftware 64 APPENDIX B chives ntn ricc ageet eebe dua FR Fk Ran ak n Ran Ra e 67 SR el lege EE 67 J umper configurations a i nr ern e P pe 70 Gonriector PINOYS iror annann rede ren a rer us 72 PE BUS siTo o Puce EE 75 WARRANTY PREFACE This manual provides all the information required to install configure and operate the 5082 Microcontroller By using this manual you will be able to e Interface the 5082 to your BM compatible PC and the Micro PC Expansion Cards Set up communications between the 5082 and a terminal or PC Gain an understanding of the operation of 5082 hardware using CAMBASIC IV programming language This manual assumes that you are familiar with some type of BASIC programming software If you are not experienced with BASI C type software you may want to refer to some of the excellent books on BASIC which are available through your local bookstore Refer also to the CAMBASIC IV Programming Guide for information and examples of all commands NOTE The 5082 uses a Z80181 processor Additional information on this component can be obtained from Zilog technical manual DC 2519 02 phone 408 370 8000 CONVENTIONS USED IN THIS MANUAL 1 Information which appears on your screen output from your system or commands or data that you key in is shown ina different type face Example 1
16. requires one slot in the Micro PC card cage and plugs directly into the backplane motherboard Always use antistatic procedures when handling WARNING any electronic components The greatest dangers occur when the card is plugged into a card cage and when cables are plugged into the card To avoid damaging your card and its components 1 Ground yourself before handling the 5082 Microcontroller and before inserting or removing cables 2 Disconnect power before removing or insert ing the 5082 3 Do not insert or remove chips from the board while power is applied EQUIPMENT You will need the following equipment or equivalent to use your 5082 5082 Microcontroller Micro PC Card Cage Power Module VTC 9F Cable PC SmartLINK Please refer to Appendix A if you are making your own serial cable using a communications program other than PC SmartLINK or using other non Octagon components Installation 9 INSTALLING THE 5082 MICROCONTROLLER Before installing the 5082 refer to Figure 2 1 for the location of various connectors and jumpers LCD x Reset Display eypad VO Access Indicator COM1 Typical pin orientation Digital VO User Device Autorun Select Digital VO Reset Indicator 5 GND Power Indicator Figure 2 1 5082 Component Diagram WARNING Take care to correctly position the 5082 in the card cage The VCC and ground signals must match those on the backplan
17. software necessary to create a control system It can be used alone or in conjunction with Octa gon Micro PC expansion cards The 5082 uses one slot of the Micro PC card cage All communica tion between the 5082 and your PC is done through the serial ports Figure 1 1 shows the basic system configuration With this configuration you can e Use your PC s editor or word processor to write your program e Download the program to the 5082 e Edit and alter the program on the 5082 e Save the program back to disk or to on board EEPROM CAMBASIC IV an operating system and compiler designed specifically for control and data acquisition applications is in cluded as part of your 5082 Microcontroller You do not need any other software to run programs on the 5082 You will need communications software such as PC SmartLINK to link your PC to the 5082 card 5082 Microcontroller card cage and power module Figure 1 1 Basic System Configuration Overview 5 MAJOR FEATURES Resident CAMBASIC IV Software The 5082 includes CAMBASIC IV software for program develop ment This software is designed for developing control and data acquisition programs Its syntax is very similar to Microsoft BASIC Industrial command extensions have been added to help you interface with both built in and external real time hardware Digital 1 0 Port and Opto Rack Interface The 5082 has 64 I O lines to interface with logic devices switch i
18. source over 2 5 mA at 2 4V When driving opto modules the output can sink 15 mA at 1 0V The keypad and display ports can also be used as general purpose digital 1 0 lines Digital 1 O Lines 42 CONFIGURING THE 82C55 DIGITAL UO LINES On power up or reset all ports are inputs Use the CONFIG PIO command to reconfigure I O lines The following programs demon strate typical configurations Example 1 J 2 Digital 1 0 10 Connect an 8 16 or 24 position opto rack to J 2 30 CONFIG PIO 0 1 1 1 0 1 Configures lower port C for outputs all others for inputs 100 OUT 2 3 Outputs a 3 to lower port C 110 B INP 0 Gets status from port A Example 2 J 3 Digital 1 0 10 Connect a STB 26 to J 3 30 CONFIG PIO amp 40 0 0 0 1 1 Configures 82C55 ports A amp B as low outputs C as all inputs 40 Perform other initialization routines 100 OUT amp 40 1 Sets port A bit Otoa 1 110 D INP amp 42 Reads all lines on port C 120 B BIT amp 42 1 Reads port C bit 1 130 BIT amp 41 3 1 Turns on bit 3 of high current port B NOTE For Ports A and B a 0 turns on a high current line a 1 turns it off For further information please refer to the CAMBASIC IV Pro gramming Guide OPTO MODULE RACK INTERFACE You can interface digital I O lines from J 2 and or J 3 to an 8 16 or 24 position opto module rack One end of the CMA 26 cable plugs into J 2 3 and the other plugs into an MPB 8 MPB
19. the laws of the State of Colorado The information in this manual is provided for reference only Octagon does not assume any liability arising out of the application or use of the information or products described in this manual This manual may contain or reference information and products protected by copyrights or patents No license is conveyed under the rights of Octagon or others
20. time COM1 can be used as a general purpose serial port However it does not support hardware handshaking Serial Ports 31 COM2 J4 COM2 can be used as a general purpose serial port It cannot be used to download or edit your programs It supports two hardware handshake lines CTS and RTS The 5082 serial ports COM2 and COM3 are configured as DCE Data Communication Equipment therefore RTS is an input and CTS is an output On power up the 5082 does not enable the RTS or CTS control signals It is up to the programmer to control these signals with CAMBASIC com mands The BIT command can be used to monitor the logic levels of the RTS line and control the CTS line The following example demonstrates how to monitor and control the handshake lines 70 80 The following program refers to COM2 only 90 100 Set COM2 CTS low 110 CTS is an output from the 5082 120 5 130 BIT amp 80 4 0FF Set bit 4 of port addr amp 80 to low 200 Loop to monitor COM2 RTS 210 RTS is an input to the 5082 220 230 rts loop 240 RTS BIT amp 82 5 Monitor bit 5 of port addr amp 82 250 IF RTS lt gt 1 THEN GOTO rts loop 270 Program continues when receiver has detected RTS 300 Set COM2 CTS high 310 CTS is an output from the 508X 320 330 BIT amp 80 4 0N Set bit 4 of port address amp 80 400 RTS high detected CTS set high the program is ready to receive characters ILO as 420 GOSUB 1000 430
21. to operate on an interrupt driven basis Each serial port has 256 character input and output buffers Characters are stored in the input buffer and removed from the output buffer on an interrupt driven basis Information is handled through the serial port without slowing down program execution For example when executing a PRINT statement the processor sends the characters to the output buffer which prints in the background while the program continues to run If the output buffer fills program execution stops until there is room in the buffer If the input buffer fills all subsequent characters are discarded All three serial ports support XON XOFF software protocol when transmitting so that a remote device can tell the 5082 to start and stop data transmission XON and XOFF are special characters chosen to establish a flow control protocol When XON is received transmission is temporarily suspended until XOFF is received Use a VTC 9F cable to connect the ports to the external serial equipment The pinout of the connector allows you to plug the cable directly into a 9 pin PC serial connector COM J1 During program development COM 1 is used to establish the communications link between your PC and the 5082 When used for programming or with the INPUT statement COM 1 will only accept ASCII characters with values from 0 to 127 When used with the INKEY and COM functions it will also return ASCII data from 0 to 255 During run
22. 2 Hold down the lt ALT gt key and type U for upload 3 Type in the filename of the program to be uploaded Downloading Your Program Totransfer a program from the hard drive on your PC back to the 5082 1 Start PC SmartLINK on your PC 2 Hold down the lt ALT gt key and type D for download 3 Type in the filename of the program to be downloaded 4 To view the program after it downloads type LIST lt RETURN gt Installation 13 WHERE TO GO FROM HERE If you want to do this Turn to Add memory Chapter 3 Battery back memory Chapter 3 Save data to RAM Chapter 4 Save programs to EEPROM Chapter 5 Use autorun feature Chapter 5 Use serial ports Chapter 6 Use on card digital I O lines Chapter 7 Connect a display Chapter 8 Connect a keypad Chapter 9 Connect high current devices Chapter 10 Use the watchdog timer Chapter 11 Use a calendar clock Chapter 12 Connect interrupt devices Chapter 13 Use non standard communications software or equipment Appendix A Use a Micro PC expansion card The User Manual for that card TROUBLESHOOTING No Logon Message 1 Press lt ESC gt again 2 Check the power module make sure the power cord is properly connected between the power module and the power source 3 Check the serial parameters on your PC The default setting should be 9600 baud no parity 8 data bits 1 stop bit 4 Make sure the serial cable is properly connected between the 5082 and your PC or term
23. 5082 User s Manual Doc 03281 Rev 0296 OCTAGON SYSTEMS CORPORATION 6510 W 91st Ave Westminster CO 80030 Tech Support 303 426 4521 COPYRIGHT Copyright 1992 1994 1996 Octagon Systems Corporation All rights reserved However any part of this document may be reproduced provided that Octagon Systems Corporation is cited as the source The contents of this manual and the specifications herein may change without notice TRADEMARKS Micro PC PC SmartLink Octagon Systems Corporation the Octagon logo and the Micro PC logo are trademarks of Octagon Systems Corporation QuickBASIC is a registered trademark of Microsoft Corporation ROM DOS is a trademark of Datalight SmartSocket and SmartWatch are trademarks of Dallas Semiconductor IBM PC is a register trademark of IBM Corpora tion NOTICE TO USER The information contained in this manual is believed to be correct However Octagon assumes no responsibility for any of the circuits described herein conveys no license under any patent or other right and makes no representations that the circuits are free from patent infringement Octagon makes no representation or war ranty that such applications will be suitable for the use specified without further testing or modification Octagon Systems Corporation general policy does not recommend the use of its products in life support applications where the failure or malfunction of a component may direct
24. INTRODUCTION Although RAM is volatile it is usually the most convenient means of temporarily storing data program variables etc When perma nent storage is required a battery backup module can be added This chapter describes the memory usage of CAMBASIC IV and how to save and retrieve information from the static RAM User programs and CAMBASIC IV variables reside in segment 0 of RAM Except for program and variable space the remainder of RAM space is available for user data When using a 128K or 512K RAM it is recommended that user data be stored in segment 1 and higher so that there will be no conflict with CAMBASIC opera tions With a 32K RAM only segment O0 is available so care must be taken to properly reserve RAM space for user data Memory Map m amp FFFFF 4 4 Solid state Disk U9 gt amp 80000 3 4 512K RAM gt amp 27000 128K RAM L amp 10000 System e amp F000 32K RAM RAM U11 amp 7000 lt CAMBASIC ROM U10 L 0000 Figure 4 1 M emory Map Storing in RAM 21 m amp 10000 Stack amp string space q SYS 3 Available RAM q SYS 2 Program amp variables L amp 7000 128K amp 512K RAM System m amp EC00 4 Stack amp string space Available RAM lt SYS 3 Program amp variables amp 7000 lt SYS 2 32K RAM System Figure 4 2 32
25. K 128K and 512K RAM The following program demonstrates how to reserve 100 bytes of Allocate 100 bytes for user data e g assembly program space in segment 0 SizezTotal avail RAM If no space then error Alloc 100 bytes from top Do your stuff with ADR here Not enough space for allocation RAM space 10 20 30 assuming 32K RAM installed 40 50 60 SIZE SYS 3 SYS 2 70 IF SIZE 100 THEN 200 80 ADR SYS 3 100 90 100 110 END 200 PRINT 210 END Storing in RAM 22 PROGRAMMING EXAMPLES This section includes three examples saving and retrieving a variable a string and an array For more information please refer to the CAMBASIC IV Programming Guide Saving and Retrieving a Variable 10 POKE 200 A 1 Saves byte value into address 200 of segment 1 A byte is any number from 0 to 255 Words and floating point numbers also saved by using DPOKE 2 bytes and POKE 4 bytes 50 A PEEK 200 1 Retrieves a byte value Words and floating point numbers also retrieved by using DPEEK and PEEK Saving and Retrieving a String 100 POKE 300 AS 1 Pokes string variable A to memory address 300 in segment 1 120 BS PEEKS 300 1 Retrieves a string at address 300 segment 1 Saving and Retrieving an Array A single dimensioned array may be stored and retrieved from RAM Refer tothe ARRAY statement and function in the CAMBASIC IV Programming G
26. M To rename a program that is stored in the EEPROM enter RENAME oldname newname Storing in EEPROM 27 DELETING A PROGRAM FROM EEPROM To delete a program from the EEPROM enter DEL filename RUNNING A PROGRAM FROM EEPROM Torun a program from the EEPROM enter RUN filename The file will load from the EEPROM to RAM and execute immedi ately It has the same effect as entering LOAD filename and then entering RUN AUTOMATIC PROGRAM EXECUTION ON POWER UP Your 5082 Microcontroller is shipped with autorun configured as the default setting On power up CAMBASIC IV checks the contents of the files in the solid state disk SSD If the first four letters of the first file are BOOT it will load the file into RAM and run the program It ignores any other part of the filename For example any one of the following will autoexecute if it is the first program stored on the SSD BOOT BOOT PUMP2 BOOT12 1 90 The following files will not autoexecute BOOM ABOOT 12BOOT During program development give your autoexecute file any name then RENAME it to BOOT when it comes to run time Storing in EEPROM 28 To autorun a program 1 Configure jumper block W1 1 2 for autorun ON this is its default If the EEPROM will store one 32K file enter CONFIG SSD 0 If the EEPROM will store four 8K files enter CONFIG SSD 1 NOTE This command is only executed once when first configuri
27. NECTORS AND PORTS The digital 10 lines on the 5082 are supplied by two 82C55 chips One 82C55 is located in socket U1 which is connected to 2 The other is in socket U3 which is connected to J 3 J 6 and J 7 are the keypad and display ports However they may be used as general digital LOD ports Digital I O Lines 41 Input and Output Ports On power up and software or hardware reset all the 82C55 digital I O lines in J 2 and J 3 are configured as inputs All lines are TTL logic level compatible 0 5V and have 10K pull up resistors to the 5V supply 5082 Digital 1 O Port J2 and J 3 LO Address Port Description 8 lines which can be programmed as A all inputs or all outputs 8 lines interface to a high current driver 8 lines which can be programmed as B all inputs or all outputs 8 lines interface to a high current driver 8 lines which can be programmed as C one group of 8 lines or two groups of 4 lines as all inputs or all outputs The 82C55 has three ports with eight parallel I O lines bits per port Each port has a unique I O address Ports A and B can be programmed as all inputs or all outputs Port C can be pro grammed in one group of eight lines all inputs or all outputs or as two groups of four lines upper and lower C The four lines in upper or lower C can each be programmed as all inputs or all outputs When a line is configured as an output it can sink a maximum of 2 5 mA at 0 4V and can
28. O address of the frequency inputs CONFIG TIMER Configures an I O line for a timed output DINP Returns 16 bit value from I O DOUT Writes 16 bit value to I O INP Returns a byte from I O ON BIT Declares I O line to monitor logic level ON INP Causes interrupt when preset input pattern is detected our Writes a byte to I O Digital I O Lines 45 This page intentionally left blank Digital O Lines 46 Chapter 8 INTRODUCTION DISPLAY PORT The 5082 has a dedicated LCD display port J 7 with built in contrast control Supported displays range in size from two lines by 20 characters to four lines by 20 characters WARNING The display port lines are unbuffered and connect directly to the microcontroller chip Z80181 Care should be taken to avoid static discharge as this could damage the processor LCD or DP Series Displays J7 5082 Micro controller J2 V 5082 a Micro VI LCD DP IFB ae controller sd 7 OR CMA 26 24 Ribbon Cable Se b N 5600 Digital UO Figure 8 1 Display Configurations Display Port 47 CONNECTING A DISPLAY Using J 7 The most common configuration uses connector J 7 which is configured as an output and directly supports an LCD display If you don t use these lines to connect your display you can use them as general purpose digital I O lines 1 Connect one end of the display cable included with your dis
29. PAD TO A 5600 DIGITAL UO CARD You can also connect your keypad to the optional 5600 or 5600 48 Digital 1 O Expansion Cards with a LCD or DP IFB This is especially useful if you are using a keypad larger than 4x4 or want to use J 2 for something other than a keypad 1 Connect your keypad cable included with your keypad from the keypad to the IFB If you re using a 4x4 keypad use the 10 pin connection for larger keypads use the 16 pin connection 2 Connect the IFB to the selected port on the 5600 Digital 1 0 Expansion Card 3 You are now ready to initialize the keypad 10 CONFIG PIO x 0 y 0 1 1 Set up PIO port 20 CONFIG KEYPADS 8 64 x Use 64 keypd type 30 ON KEYPADS GOSUB GETKEY Enable keypd task 100 MAIN Idle loop 110 GOTO MAIN Keypad Port 53 200 GETKEY Kypd service routine 210 AS KEYPADS 0 Get key 220 PRINT AS Echo key pressed 230 RETURN Line 10 X specifies the address of port A Y specifies the status of Port A as an input or output If you are using a display Y should be zero If you are not using a display Y can be 1 or O input or output Example CONFIG PIO amp 100 0 0 0 1 1 Line 20 The value 64 indicates that you are using a keypad larger than 4x4 This example is for a 64 key keypad X is the address of the Port B When using the 5600 Digital O Expansion Card the value for X depends upon the address of the port and connector you are using Ple
30. an Array wo cecececeeeseeeeeeteeteeeteteeeeteteeetaes 23 Cornrmatnds s sr teer fen ere nr daa te cete pert 24 CHAPTER 5 STORING IN EEPROM 25 UG EFOCIUCELODL So iiie E d RERO d hr HER 25 Configuring the EEPROM sssini isisa 25 Saving A Program In EEPROM csisnicnrnineninianiinaii a 26 Loading Programs To RAM sisian 27 Renaming a Program in the EEPROM see 27 Deleting A Program From EEPROM eene 28 Running a Program from EEPROM seems 28 Automatic Program Execution On Power Up 28 Preventing TT 29 COMMANA EE 20 CHAPTER 6 SERIAL PORTS cere 31 Waliges Ufanrs p M Rm 31 CONT U EEN 31 COM2 4 EE 32 CONM3 J 5 iiid eicere nte rici doter e eH o CERE ER ERE RE 33 Changing The Serial Parameters sss 35 AutoBaud on COMTE 35 CONFIG BAUD Command rone 35 Multidrop Communications Network 36 Accessing COM1 COM2 AND COM3 Input Buffers 37 INPUT Statement oe eto rie cens 37 INK EY in e 38 ON COM Multitasking Statement A 38 COM 1 And COM2 Port Status 38 Commands ic ete ec dd ide t aint s HERR e aie 39 CHAPTER 7 DIGITAL I O LINES 41 Introdu ti ON aere ete pi e rrr rrr err re 41 Organization of Connectors and Ports sss 41 Input and Output Ports cere cr nne ineat 42 Configuring The 82C55 Digital 1 O
31. and the number and size of files stored there Refer to the CAMBASIC IV Programming Guide for additional information WARNING CONFIG SSD erases the EEPROM Any pro grams stored in the EEPROM cannot be recov ered SAVING A PROGRAM IN EEPROM To store a 32K program or the first of four 8K programs to the EEPROM enter SAVE filename The filename can have up to 12 characters Though compiling typically takes about 5 seconds it can take as long as 15 seconds with very long or complex programs The programming status displays on the screen compile program verify Storing in EEPROM 26 The prompt gt appears when the program has been successfully saved to the EEPROM If the program does not properly write to the EEPROM an error message appears Failed XXXX gt XXXX is the hexadecimal address where the program failed If you have configured the EEPROM to store four 8K programs subsequent programs can be stored using the SAVE command SAVE BOOT SAVE secondprog SAVE thirdprogram If you plan to autorun your program on power up the first four letters of the first filename on the EEPROM must be BOOT The filename can be anything you choose up to twelve characters total LOADING PROGRAMS TO RAM To examine the sizes and filenames of the files saved in the EEPROM enter FILES To load a program from EEPROM into RAM enter LOAD filename RENAMING A PROGRAM IN THE EEPRO
32. ase refer to the 5600 I O Expansion Card User s Manual for information on determining your 5600 port address Example CONFIG KEYPDAS 8 64 amp 101 COMMANDS The following is a list of the CAMBASIC IV commands for the keypad 5082 Keypad Commands Command Function CONFIG KEYPAD Sets keypad parameters KEY PAD 0 Returns the last key from the keypad port ON KEYPAD Enables keypad tasking SYS 12 Returns keypad string table address Keypad Port 54 Chapter 10 HIGH CURRENT PORTS INTRODUCTION The high current port can be used to drive relays LEDs solenoids and similar devices The port includes 16 I O lines at J 3 on the 5082 These outputs switch load to ground If you do not use this port to drive high current devices you can replace the output driver chip U2 and U4 with DIP shunt jumpers and use the lines as general purpose digital 1 0 lines The lines are TTL compatible with the DIP shunt in place The addresses of the high current ports are 40H for Port A at J 3 and 41H for Port B at J 3 On power up all high current outputs are OFF A 1 or ON written to the high current port causes the output to switch low or ON NOTE When ON the saturation voltages are incompatible with TTL logic levels and should not be used to drive other logic devices Considerations For High Current Outputs Each of the high current outputs can sink 100 mA at 50V e Incandescent lamps have a cold
33. dicator W3 Pin Function land3 Gnd 2 Reset output Technical Data 71 CONNECTOR PINOUTS 5082 COMI 2 3 serial ports J 1 4 J 5 1 0 Line Linea 24 1 14 Lines 22 3 11 Lines 20 5 12 Line7 18 7 9 V Pin2 Gnd Pin 26 Technical Data 72 1 0 Line 5082 Digital I O J 3 Port A Gnd Pin 26 13 16 15 17 14 Line5 22 3 11 Line6 20 5 12 Line7 18 7 9 V Pin 2 These lines are also high current 5082 Keypad Port J 6 Function Gnd Column 1 Column 2 Column 3 Column 4 Technical Data 73 Function 45V Gnd Data 4 Contrast Data 6 Data 5 nc Inc nc Inc Data 0 Data 3 Data 2 Data 1 5082 Display Port J 7 10 11 12 13 14 Technical Data 74 PC BUS PINOUTS Microcontroller Side A Pin Description Al 1 0 CH CK NMI Al7 A14 Not used A2 D7 al A18 A13 Not used A3 D6 1 0 A19 A12 Not used A4 D5 1 0 A20 All Not used A5 D4 1 0 A21 A10 Not used A6 D3 1 0 A22 AQ O A7 D2 1 0 A23 A8 0 A8 D1 1 0 A24 A7 O a9 DO 1 0 a25 A6 0 a10 1 0 CH RDY l A26 A5 0 All AEN Gnd A27 A4 0 A12 A19 Not used A28 A3 O a13 A18 Not used A29 A2 0 A14 A17 Not used A30 Al O Lais A16 Not used a31 AO O A16 A15 Not used
34. e Figure 2 2 shows the relative positions of the 5082 edge connector and the motherboard connector Installation 10 A31 Card Edge Pins A31 amp B31 5082 Microcontroller Micro PC Motherboard Card Edge Pins Al A1 amp B1 Figure 2 2 Edge Connector Orientation To Install The 5082 In The Card Cage Turn power module or supply off Slide the 5082 into the card cage The components on the card should face to the left or up depending on the type of card cage WARNING Plugging the card in incorrectly will destroy the card The serial cable VTC 9F for the 5082 has a 10 pin IDC connector on the 5082 end and a connector that is compat ible with the PC you are using on the other end Plug the 10 pin connector on the cable into COM 1 J 3 on the 5082 Please refer to Creating a Custom Communications Cable in Appendix A if you are making your own serial cable Plug the other end of the serial cable into COM 1 of your PC If your PC has only one serial port it is probably COM1 If you have two serial ports check your computer manual to see which is COMI If you are already using COM 1 you can use COM2 Seethe PC SmartLINK Manual for informa tion on using COM2 instead of COM 1 Installation 11 10 Copy PC SmartLINK onto your hard drive and type SL RETURN Turn on your power module If the baud rate of your PC is set to 9600 the following message appears o
35. e buffer reaches 128 before meeting your termination conditions the program will still jump to the subroutine If you don t read the buffer and the buffer fills to 256 characters all subsequent characters will be discarded The advantage of this method is that the whole string is captured without halting program execution Refer to the Multitasking Chapter in the CAMBASIC IV Programming Guidefor more information For information on using the commands INPUT INKEY and ON COM together download the application note ZAN 0059 from the Octagon Bulletin Board 303 427 5368 The settings are 2400 8 N 1 COM1 AND COM2 PORT STATUS Use the SYS command to check the status of the COM port Refer to the CAMBASIC IV Programming Guide for more specific information Knowing the status helps to determine if there are any characters in the buffers or if a communication error has occurred It is important to check for communication errors especially if you are using the ON COM tasking statement This ensures the integrity of the string that generated the interrupt Serial Ports 38 that is whether the interrupt was generated because the string was transmitted properly or because there was a communications error COMMANDS The following is a list of the CAMBASIC IV commands used for serial LO functions Command CLEAR COM CLS COM CONFIG BAUD conic COM INKEYS INPUT uist on COM PRINT PRINT
36. erface Figure 6 1 Multidrop Communications Network ACCESSING COM1 COM2 AND COM3 INPUT BUFFERS CAMBASIC IV supports three different methods of reading the input buffers The following are examples of each method You may need to consult the CAMBASIC IV Programming Guide for more information INPUT Statement This removes all characters in the buffer up to the terminator character and puts them intoa CAMBASIC IV variable When you use the INPUT statement CAMBASIC suspends operation until you enter the terminator character carriage return If the buffer Serial Ports 37 fills 256 bytes and you have not entered a carriage return all subsequent characters will be discarded Whether this will bea problem depends on your particular application INKEY Function Characters may be removed one at a time with this function A null string is returned when the buffer is empty In this mode you have access to the full 256 bytes If you don t read the buffer and the buffer fills all subsequent characters will be discarded The INKEYS funcion may be used anywhere in the program ON COMS Multitasking Statement Characters are automatically buffered until a termination condi tion which you specify is reached The program will then jump to a subroutine that removes the entire string from the buffer In this mode you have access to only 128 of the 256 bytes at a time If the number of characters in th
37. es that you do not do this However the card may be dam aged if the right sequence of pins contacts as the card is pushed into the socket This usually damages bus driver chips and they may become hot when the power is applied This is one of the most common failures of expansion cards Using desktop PC power supplies Occasionally a cus tomer will use a regular desktop PC power supply when bringing up a system Most of these are rated at 5V at 20A or more Switching supplies usually require a 20 load to operate properly This means 4A or more Since a typical Micro PC system takes less than 2A the supply does not regulate properly Customers have reported that the output can drift up to 7V and or with 7 8V voltage spikes Unless a scope is connected you may not see these transients Terminated backplanes Some customers try to use Micro PC cards in backplanes that have resistor capacitor termina tion networks CMOS cards cannot be used with termination networks Generally the cards will function erratically or the bus drivers may fail due to excessive output currents Excessive signal lead lengths Another source of failure that was identified years ago at Octagon was excessive lead lengths on digital inputs Long leads act as an antenna to pick up noise They can also act as unterminated transmission lines When 5V is switch onto a line it creates a transient waveform Octagon has seen submicrosecond pulses of 8V or more The so
38. inal Installation 14 5 Make sure the serial cable is working properly by perform ing a point to point check on the connectors Refer to Appendix B for corresponding connector signal and pin numbers 6 Make sure the 5082 is receiving power The power module voltage should be in the 5 0 25V range when measured at the connector pin B3 The power module ripple should be less than 50 mV 7 If you are using serial communications software other than PC SmartLINK and your test program does not work it is probably due to communication problems between the PC and the 5082 To verify that the 5082 is communicating with your PC a Connect an oscilloscope to J 1 pin 3 Press the reset switch on the 5082 A burst of signal activity that switches at least between 43V and 3V verifies that the 5082 is sending a signal b If you see the logon message but nothing else happens connect the oscilloscope to U7 pin 14 Press any key on the PC keyboard The signal should switch between 45V and ground If the signal does not switch between 45V and ground check J 1 pin 5 on the 5082 for a signal change of at least 3V If you cannot get a signal at J 1 pin 5 check your computer and make sure it is transmitting For communications packages other than PC SmartLINK please note The 5082 does not send a CTS signal to the host This line is tied high If your terminal or communications software requires other signals DCD DSR
39. ing your program in the EEPROM Please refer to Chapter 2 for information on transferring programs between RAM and your PC and to Chapter 4 for more on storing information in RAM You can set up your system to autorun your program or series of programs When autorun is on the program in the EEPROM is loaded into RAM and begins to execute immediately on power up You can also link multiple programs so that the first program to run calls the second which calls the third which calls the fourth The EEPROM is write protected with a software lock so accidental writes on power on or off are almost impossible You cannot disable or overwrite the lock except when executing the SAVE command This means you cannot POKE data into the EEPROM CONFIGURING THE EEPROM Before the EEPROM can be used to save programs jumper block W1 must be configured for the autorun enable option This is the factory default setting Storing in EEPROM 25 5082 Autorun Select W1 Pins J umpered Function 1 2F Autorun enabled Not jumpered Autorun disabled default Next the EEPROM must be configured using the CONFIG SSD command This command configures the EEPROM for either one 32K program type 0 or four 8K programs type 1 It is executed only when you install a new EEPROM or want to change the configuration of an existing EEPROM To configure the EEPROM enter CONFIG SSD type Type refers to the size of EEPROM
40. lize the keypad The example below is for a 16 key keypad 10 CONFIG KEYPADS 8 U se def 16 kp type 20 ON KEYPAD GOSUB GETKEY Enable kp task 100 MAIN Idle loop 110 GOTO MAIN 200 GETKEY K p service routine 210 AS KEYPADS 0 Get key 220 PRINT A Echo key pressed 230 RETURN Using J 2 If you are using a keypad with more than 16 keys you must it to the digital 1 O port J 2 using an LCD or DP IFB board The DP IFB is used with vacuum fluorescent displays and the LCD IFB for liquid crystal displays 1 Connect the cable included with your keypad to the LCD IFB or DP IFB 2 Connect a CMA 26 cable from the IFB toJ 2 on the 5082 3 You are now ready to initialize the keypad The following example is for a 64 key keypad Keypad Port 52 10 CONFIG PIO amp 0 0 0 0 1 1 Set up PIO port 20 CONFIG KEYPADS 8 64 amp 1 Use 64 keypad type 30 ON KEYPADS GOSUB GETKEY Enable keypad task 100 MAIN Idle loop 110 GOTO MAIN 200 GETKEY K ypd service routine 210 AS KEYPADS 0 Get key 220 PRINT AS Echo key pressed 230 RETURN NOTE The CONFIG PIO and CONFIG KEYPADS statements are required for a 64 key keypad Other size keypads may require modification to the statement For example the following is required for a 16 key keypad connected to J 2 CONFIG PIO 6 amp 0 0 0 0 1 0 CONFIG KEYPADS 8 16 amp 2 CONNECTING THE KEY
41. lution is to place a capacitor for example 0 1 uF across the switch contact This will also eliminate radio frequency and other high frequency pickup Using CMOS Circuitry 4 TABLE OF CONTENTS PREFACE oe oa E a e a a aeaea 1 Conventions Used in This Manual see 1 Symbols and Terminology icr tari eco reet ce ds 2 Technical SUpport EE 4 CHAPTER 1 OVERVIEW e cerner nnn nnn nnn nnn 5 auge eege ET 5 GET eg 6 CHAPTER 2 INSTALLATION EE KEE 9 EQUIPMENE i m iN 9 Installing the 5082 Microcontroller A 10 To Install the 5082 in the Card Cage sess 11 Uploading amp Downloading Programs seeeee 13 Uploading Y our Program rnt i pee 13 Downloading Y our Program 13 Where To Go From Here reco Dre tea fee eed 14 Ne Die E le dl n cioe A R ht ie Pe qa 14 CHAPTER 3 ADDING MEMORY 17 lintr odU eR 17 Types of Memory reed ener ni de e Pe d 17 Adding Memory EE 17 installing RAM Chips ote naaa 17 Installing a Battery Backup Module AAA 18 Installing EEPROM Chips iria pete 19 CHAPTER 4 STORING IN RAM 21 ln EFOCIUCELODE iin rete p ed padece EP ere 21 Programming Examples sssessseseeeeene nennen 23 Saving and Retrieving a Variable sss 23 Saving and Retrieving a String senes 23 Saving and Retrieving
42. ly threaten life or injury It is a Condition of Sale that the user of Octagon products in life support applications assumes all the risk of such use and indemnifies Octagon against all damage IMPORTANT Please read before installing your product Octagon s products are designed to be high in performance while consuming very little power In order to maintain this advantage CMOS circuitry is used CMOS chips have specific needs and some special requirements that the user must be aware of Read the following to help avoid damage to your card from the use of CMOS chips Using CMOS Circuitry 1 Using CMOS Circuitry in Industrial Control Industrial computers originally used LSTTL circuits Because many PC components are used in laptop computers IC manufac turers are exclusively using CMOS technology Both TTL and CMOS have failure mechanisms but they are different This section describes some of the common failures which are common to all manufacturers of CM OS equipment However much of the information has been put in the context of the Micro PC Octagon has developed a reliable database of customer induced field failures The average MTBF of Micro PC cards exceeds 11 years yet there are failures Most failures have been identified as customer induced but there is a small percentage that cannot be identified As expected virtually all the failures occur when bringing up the first system On subsequent systems the failure
43. n off power to the 5082 2 Remove the memory chip from socket U 11 3 Install the DS 1213D or DS 1213DM into socket U11 with the index mark pointing towards the 5082 gold contact fingers 4 Install the memory chip into the top of the module Adding M emory 18 5 Make the appropriate jumper connections in jumper W2 5082 RAM Select W2 RAM Size 32K 128K Pins J umpered 2 3 1 2 512K default NOTE Special low power memory chips must be used or battery life will be drastically reduced Installing EEPROM Chips The 5082 is shipped with a 32K EEPROM installed in socket U9 the user socket To change the device you need to remove the original chip install the new device and change the jumper settings in jumper block W1 NOTE Improper setting of W1 may result in lack of operation Toinstall an EEPROM chip 1 Turn off power to the 5082 2 Remove any memory chip from socket U9 3 Install the new EEPROM in socket U9 4 Make the appropriate jumper connections in jumper block WI 5082 User Device Select W1 29C256 EEPROM Pins J umpered 3 4 5 6 27C256 EPROM 3 4 5 6 default NOTE The on card EEPROM programmer cannot be used with a 27C256 The EPROM must be programmed off card and then installed in U9 on the 5082 Adding Memory 19 This page intentionally left blank Adding Memory 20 Chapter 4 STORING IN RAM
44. n your screen Press lt ESC gt If the baud rate of your PC is not set to 9600 a nonsense message appears instead Ignore the nonsense message and continue with the next step Press the lt ESC gt key The system will automatically adapt to baud rates of 300 1200 2400 4800 or 9600 and display a logon message showing the current version of CAMBASIC IV and the amount of free memory available CAMBASIC IV tm c 1985 92 Octagon Systems Corporation Vxx X All rights reserved Bytes free 33518 If you don t get the proper logon message refer to the Troubleshooting section at the end of this chapter The system is now in immediate mode and is ready for you to start programming with CAMBASIC IV Type the following test program 10 FOR X 0 TO 2 20 PRINT Hello 30 NEXT 40 PRINT Now type RUN Installation 12 The system will display Hello Hello Hello UPLOADING amp DOWNLOADING PROGRAMS Downloading programs means transferring them from your PC to RAM on your 5082 Uploading means transferring them from RAM on the 5082 back to the PC This section explains how to do both of these procedures if you are using PC SmartLINK Please refer to Appendix A if you are using other communications soft ware Uploading Your Program In the previous section you created a test program on the 5082 To upload that program and save it to the disk on your PC 1 Start PC SmartLINK on your PC
45. ndicator light LED buzzer etc that is triggered when the system resets Pins 1 and 3 are ground Pin 2 goes low on reset The indicator must be disconnected to reset the SCR at Q1 Autorun On Power up Autorun refers to the automatic execution of a program on power up or reset When the autorun is on the program stored in the EEPROM in socket U6 will automatically execute on power up or reset AutoBaud The AutoBaud feature automatically determines and operates at the baud rate of your PC The 5082 will match baud rates of 300 1200 2400 4800 and 9600 On Card Programmer Once your program has been debugged you can store it in the EEPROM by using the on card programmer and the SAVE command Overview 7 Battery backed RAM The static RAM on the 5082 may be battery backed for saving process data during power down 32K and 128K may be batter backed with the DS 1213D SmartSocket The 512K RAMs may be battery backed with the DS 1213DM Battery life is typically 10 years at room temperature Calendar clock A battery backed calendar may be added to the system by insert ing the DS 1216EM SmartWatch into the EEPROM socket and plugging the EEPROM into the DS 1216EM The dual battery system in this module has a life of about 10 years at room tem perature Overview 8 Chapter 2 INSTALLATION The 5082 is designed to be ready to program from the time you plug it in Installation is simple and straightforward The 5082
46. ng 16 I O lines are terminated with 10K pull up resistors on IDC connectors for a keypad and display Y ou can use an MPB 8 16 or 24 opto module rack by connect ing the rack to J 2 or J 3 with a CMA 26 cable Drive Current 2 5 mA max per line sink or source TTL compatible Output Low Voltage 0 45V max at 2 5 mA 1V max at 12 mA opto rack compatible Output High Voltage 2 4V min Keypad Input J 6 Connector J 6 may be used with a 4x4 keypad It will also accept four switch contacts Debouncing and scanning are done with software commands Use Octagon KP 1 KP 2 16 or KP 3 keypad and cable I O address is E1H Display Port J 7 Can be used with any LCD display with up to 80 characters 1 O address is E2H Serial Ports J 1 J 4 J 5 Three RS 232C serial ports COM1 J 1 supports the RxD and TxD signals COM2 J 4 supports the RxD and TxD signals as well as the RTS and CTS handshake lines COM3 J 5 supports the RxD Technical Data 67 and TxD signals as well as the RTS CTS DCD and DTR hand shake signals EEPROM Programmer Programs 32K including 5082 EEPROMs Order Octagon 29C256 Atmel 32K 29C256 20PC Speed for all EEPROMs must be 200 nS or faster Pushbutton Reset The pushbutton reset switch will reboot the system Power Requirements 5V 41 596 3170 mA typical The RS 232C supply voltages are generated on card When using opto mounting racks with the system the 5V
47. ng the EEPROM This command will erase any existing data in the EEPROM SAVE your program from RAM to the EEPROM Thefirst four letters of the filename must be BOOT On power up or reset the program BOOT will automatically download to RAM and execute Preventing Autorun When troubleshooting a program it may be necessary to disable the autorun option This is espedally true for those programs that have been configured to ignore the break lt ESC gt key To prevent autorun 1 2 3 Power off the 5082 Remove the jumper at W1 1 2 Power on the system Replace the jumper at W1 1 2 Use the RENAME command to rename BOOT to any name not beginning with BOOT Storing in EEPROM 29 COMMANDS The following is a list of CAMBASIC IV commands used in storing and running programs saved in the EEPROM 5082 Commands to Store and Run Programs Command Function CONFIG SSD Sets up EEPROM asa disk DEL Deletes program from EEPROM FILES Displays SSD files LOAD Downloads program from EEPROM to RAM RENAME Renames SSD files RUN Downloads and runs the specified program SAVE Saves program to EEPROM Storing in EEPROM 30 Chapter 6 SERIAL PORTS INTRODUCTION The 5082 has three serial ports COM 1 COM2 and COM3 which can be used for interfacing to printers terminals or other serial devices Each port can be programmed independently with built in CAMBASIC IV commands
48. nputs LEDs and drive an opto mounting rack The input and output levels are 0 5V logic compatible Eight of the digital 1 0 lines are also supported as an LCD display port while another eight lines are also supported as a keypad port The remaining 48 I O lines can be programmed as inputs or outputs in groups of four and eight Matrix Keypad Port This port directly supports all Octagon 16 position keypads The KEYPAD command in CAMBASIC IV automatically scans and debounces the keypad and interrupts the program when a key is pressed Display Port The display port interfaces to the LCD series displays The DISPLAY command in CAMBASIC IV supports LCDs up to 80 characters at this port Eight of the 64 I O lines are used for this port High Current Drivers The 5082 has 16 high current outputs for driving LEDs lamps relays small motors etc Each line can switch DC loads up to 100 mA 950V These lines can also be configured as standard logic levels and can be programmed as inputs or outputs in groups of eight Overview 6 COM1 COM2 and COM3 Serial Ports Three programmable RS 232 serial ports are standard on the 5082 The baud rate parity length and number of stop bits are software programmable for all ports Watchdog Timer The watchdog timer is a fail safe against program crashes or processor lockups It times out every 1 2 seconds Reset Indicator W3 is a three pin connector that allows you to connect any kind of i
49. nsense message when you power up Ignore the nonsense message and the symbol lt if it appears and press the lt ESC gt key the logon message should appear See Chapter 2 for more information CAMBASIC IV sends out escape sequences to control functions on your PC If you are not using PC SmartLINK you may get unpredictable results on your software package or terminal If you are having problems turn off the escape sequences while in CAMBASIC IV by typing CONFIG TERM 1 The CLS command sends out an lt ESC gt which may appear as on your screen Saving and loading CAMBASIC IV programs using another communications program depends upon its command set Usually you must set up your communications program to receive or transmit a file To save a program type LIST set up your communications program to receive a file then press RETURN Non Octagon Components 65 The serial port COM1 J 1 does NOT use handshaking or control lines Set up your serial communications software to transmit a file when downloading a program to the 5082 Non Octagon Components 66 Appendix B TECHNICAL DATA SPECIFICATIONS e CPU e Z80181 Z80 code compatible 9 216 MHz Memory 29K CAMBASIC IV ROM e up to512K static RAM e 32K nonvolatile memory EEPROM 5082 Digital 1 0 The 5082 has 64 digital I O lines using two 82C55 chips Forty eight of the I O lines are terminated with 26 pin IDC connectors The remaini
50. or altered by other than Octagon personnel unless Buyer has properly altered or repaired the products in accordance with procedures previously approved in writing by Octagon 2 Products which have been subject to power supply reversal misuse neglect accident or improper installation 3 Thedesign capability capacity or suitability for use of the Software Software is licensed on an AS IS basis without warranty The warranty and remedies set forth above are in lieu of all other warranties expressed or implied oral or written either in fact or by operation of law statutory or otherwise including warranties of merchantability and fitness for a particular purpose which Octagon specifically disclaims Octagon neither assumes nor authorizes any other liability in connection with the sale installa tion or use of its products Octagon shall have no liability for incidental or consequential damages of any kind arising out of the sale delay in delivery installation or use of its products SERVICE POLICY 1 Octagon s goal is to ship your product within 10 working days of receipt 2 Ifa product should fail during the warranty period it will be repaired free of charge For out of warranty repairs the customer will be invoiced for repair charges at current stan dard labor and materials rates 3 Customers that return products for repairs within the warranty period and the product is found to be free of defect may be liable fo
51. play to the display 2 Connect the other end of the cable to J 7 on the 5082 3 You are now ready to initialize the display The example below is for a 4x20 LCD display Notice that all DISPLAY statements end with a semicolon so that a carriage return line feed is not sent 10 CONFIG DISPLAY amp E2 6 0 Config display port 20 AS OCTAGON S BUILT IN Build display strings 30 BS DISPLAY PORT IS 40 C EASY TO USE 50 DISPLAY 0 1 A Display strings 60 DISPLAY 1 1 B 70 DISPLAY 2 1 C 80 END NOTE If your LCD does not display a good contrast between the characters and the background adjust the LCD contrast pot Using J 2 If you are using an LCD display larger than 4x20 or are using a DP series vacuum fluorescent display with the 5082 you must connect the display to the digital I O port J 2 using an LCD or DP IFB board 1 Connect the cable included with your display to the display and the IFB 2 Connect a CMA 26 cable from the IFB toJ 2 on the 5082 Display Port 48 3 You are now ready to initialize the display The following program demonstrates how to drive a 4x20 LCD via the J 2 digital port 10 CONFIG PIO 0 0 0 0 0 0 Config dig I O port 20 CONFIG DISPLAY 0 6 0 Config display type 30 AS OCTAGON S BUILT IN Build display strings 30 BS DISPLAY COMMAND 50 cS IS EASY TO USE 60 DISPLAY 0 1 AS Display strings 70 DISPLAY 1 1 B 80 DISPLAY 2 1 C
52. r the minimum current repair charge RETURNING A PRODUCT FOR REPAIR Upon determining that repair services are required the customer must 1 Obtain an RMA Return Material Authorization number from the Customer Service Department 303 430 1500 2 If the request is for an out of warranty repair a purchase order number or other acceptable information must be sup plied by the customer 3 Indudea list of problems encountered along with your name address telephone and RMA number 4 Carefully package the product in an antistatic bag Failure to package in antistatic material will VOID all warranties Then package in a safe container for shipping Write RMA number on the outside of the box For products under warranty the customer pays for shipping to Octagon Octagon pays for shipping back to customer 7 Other conditions and limitations may apply to international shipments DM NOTE PRODUCTS RETURNED TO OCTAGON FREIGHT COLLECT OR WITHOUT AN RMA NUMBER CANNOT BE ACCEPTED AND WILL BE RETURNED FREIGHT COLLECT RETURNS There will be a 15 restocking charge on returned product that is unopened and unused if Octagon accepts such a return Returns will not be accepted 30 days after purchase Opened and or used products non standard products software and printed materials are not returnable without prior written agreement GOVERNING LAW This agreement is made in governed by and shall be construed in accordance with
53. rate drops dramatically W Approximately 20 of the returned cards are problem free These cards typically have the wrong jumper settings or the customer has problems with the software This causes frustration for the customer and incurs a testing charge from Octagon m Of the remaining 80 of the cards 90 of these cards fail due to customer misuse and accident Customers often cannot pinpoint the cause of the misuse W Therefore 72 of the returned cards are damaged through some type of misuse Of the remaining 896 Octagon is unable to determine the cause of the failure and repairs these cards at no charge if they are under warranty The most common failures on CPU cards are over voltage of the power supply static discharge and damage to the serial and parallel ports On expansion cards the most common failures are static discharge over voltage of inputs over current of outputs and misuse of the CMOS circuitry with regards to power supply sequencing In the case of the video cards the most common failure is to miswire the card to the flat panel display Miswiring can damage both the card and an expensive display m Multiple component failures The chance of a random component failure is very rare since the average MTBF of an Octagon card is greater than 11 years In a 7 year study Using CMOS Circuitry 2 Octagon has never found a single case where multiple IC failures were not caused by misuse or accident It is very
54. riting to the clock will not affect any information stored in the EEPROM COMMANDS The following is a list of the CAMBASIC IV commands for the calendar clock 5082 Calendar Clock Commands Command Function Reads sets date from calendar clock TIMES Reads sets timer for calendar clock Calendar Clock 60 Chapter 13 INTERRUPT HANDLING INTRODUCTION The 5082 can be mounted in a passive backplane for use with external interrupt devices You can use a switch closure magnetic pick up or other device capable of switching between 5V and ground for external interrupt generation Refer to the following table for 5082 interrupt connections 5082 Interrupt Input Sources Edge Conn Pins INT2 4 High IRQ4 B24 INTERRUPT GENERATION An interrupt is generated when a logic signal level on an interrupt input switch goes high for 10 uS If you indude an ON ITR n GOSUB label command in your program it will branch to the subroutine label when the interrupt is generated The subroutine designated by this command is executed after the current CAMBASIC IV statement completes execution The average latency is about 0 5 mS PROGRAMMING EXAMPLE The following programming example shows how to set up the interrupt and service routine When the IRQ3 line goes high the interrupt service routine is executed and the message Door Open is printed Interrupt Handling 61 20 ON ITR 3 GOSUB 500 Se
55. s d even odd parity 10 Configure COM1 for 9600 baud 8 data bits no parity 2 stop bits 20 30 CONFIG BAUD 1 6 5 0 40 50 Configure COM 2 for 2400 baud 7 data bits even parity 2 stop bits 60 70 CONFIG BAUD 2 4 3 0 80 100 Configure COM3 for 300 baud 7 data bits odd parity 1 stop bit Serial Ports 35 120 130 CONFIG BAUD 3 1 2 1 For further information please refer to the CAMBASIC IV Pro gramming Guide MULTIDROP COMMUNICATIONS NETWORK You can use your 5082 Microcontroller with a multidrop communi cation network by connecting COM2 or COM3 to the network with an MTB 485 converter The MTB 485 converts the serial port to RS 422 or RS 485 With the MTB 485 you can connect up to 32 units including one or more 5082 Microcontrollers PCs and other devices over a 4 000 foot range Figure 6 1 shows an example of a multidrop communications network The network indudes a host and one or more devices The host transmits signals to all the devices in the network The signal indudes an identifier as well as commands or data for one or more devices The signal is received by all devices and ignored by all devices except the one identified at the beginning of the signal The identified device will transmit any required response back to the host There are several different communication protocols which estab lish how to encode the device identity in the signal For example you might set up your protocol so that the
56. supply requirements increase by 12 mA per opto module Environmental 40 to 70 C operating 40 to 85 C nonoperating RH 5 to 95 noncondensing Size 4 5 in X 49in 12 45 X 11 43 cm Technical Data 68 Memory Map Memory Map r amp FFFFF 4 Solid state Disk U9 gt amp 80000 512K RAM gt amp 27000 128K RAM L amp 10000 System e amp F000 32K RAM RAM U11 gt amp 7000 lt CAMBASIC ROM U10 L 0000 4 Technical Data 69 LO Map 5082 I O Map J 2 Digital 1 0 00 03 J 3 Digital I O 40H 43H Watchdog enable 60H Z80181 Internal Register 80H BFH J 6 Keypad E1H J 7 Display E2H Expansion 100H 3F FH 1EOH 1EFH Reserved 2E0H 2bEFH Reserved 3E0H 3EFH Reserved JUMPER CONFIGURATIONS 5082 User Device Select W1 Device Size Device Type Pins Jumpered 29C256 EEPROM 3 4 5 6 32K 27C256 EPROM 3 4 5 6 default NOTE The on card EEPROM programmer cannot be used with a 27C256 The EPROM must be programmed off card and then installed in U9 on the 5082 Technical Data 70 5082 Autorun Select W1 Pins J umpered Function 1 2F Autorun enabled Not jumpered Autorun disabled default 5082 RAM Select W2 RAM Size 32K 128K Pins umpered 2 3 1 2 512K default 5082 Reset In
57. t to use with the display statement For moreinformation on specific displays refer to the CAMBASIC IV Programming Guide CONFIG DISPLAY DISPLAY Displays the strings at the row and column specified Display Port 50 Chapter 9 KEYPAD PORT INTRODUCTION You can use 4x4 16 key and larger keypads with the 5082 Microcontroller You can connect a 4x4 keypad directly to J 6 on the 5082 with the cable included with your keypad Larger keypads must be connected to an interface board IFB the IFB is then connected to either J 2 on the 5082 or to a port on the 5600 Digital UO Expansion Card WARNING The keypad port lines are unbuffered and connect directly to the microcontroller chip Z80181 Care should be taken to avoid static discharge as this could damage the processor J6 Only 16 Key 5082 KP Series Keypad Micro controller s 5082 16 Key or larger Micro KP Series Keypad e controller Qum OR CMA 26 Ww Ribbon Cable BN N LCD DP IFB Ge Figure 9 1 Keypad Configurations Keypad Port 51 CONNECTING THE KEYPAD Using J 6 The most common configuration uses J 6 which is already config ured If you don t connect your keypad to these lines you can use them as general purpose digital O lines 1 Connect one end of the keypad cable included with your keypad to the keypad 2 Connect the other end of the cable to J 6 on the 5082 card 3 You are now ready to initia
58. tem is on and ready for you to use CAMBASIC IV Specialized CAMBASI C IV commands designed for industrial programming applications e AIN AOT BIT Liquid Crystal Display A method of multiprocessor communica tion using RS 485 A serial communications software package designed by Octagon It provides communications between a PC and other equipment and may be used with any PC software package including CAMBASIC IV Resetting the 5082 hardware and soft ware by pushing the reset switch Has the same results as disconnecting power to the system without the potential side effects of a cold reset Memory used by CAMBASIC IV for program data and variable storage 0 5V logic levels To transfer a program or data from the 5082 to a PC A sender receiver protocol in which data transmission is suspended until the equipment receiving the data is ready to accept the incoming information Preface 3 TECHNICAL SUPPORT If you have a question about the 5082 Microcontroller and can t find the answer in this manual call our Technical Support They will be ready to give you the support you need When you call please have the following at hand Your 5082 Microcontroller User s Manual A description of your problem The direct line to Technical Support is 303 426 4521 Preface 4 Chapter 1 OVERVIEW INTRODUCTION The 5082 Microcontroller is a 4 5 in x 4 9 in computer that contains all the hardware and
59. to an intermediate code The time needed to compile the line depends on the complex ity of the statement and how many statements have already been compiled The longer and or more complex the pro gram the longer it takes to compile It also takes longer to download a program that is replacing an existing program CAMBASIC must finish compiling one line before beginning the next line When the line has been compiled CAMBASIC sends a pacing prompt the gt character which is recog nized by PC SmartLINK When PC SmartLINK detects the pacing prompt it sends the next line of code to CAMBASIC Non Octagon Components 64 CAMBASIC uses the carriage return line feed sequence followed by the gt as the pacing prompt Your communications program should wait for a gt character at the beginning of each line otherwise you will begin to lose characters when the program gets too big To upload a program transfer it from the 5082 RAM to your PC set up your PC toreceivea file Refer to your communi cations software documentation for details The 5082 Microcontroller sends out a clear screen com mand on power up or reset This command is essentially an escape sequence that clears the screen You may see the symbol lt on your screen in response to the command Ignore the symbol It will not affect any other aspect of your system If your communications setup runs at a baud rate other than 9600 you will get a no
60. ts interrupt for line 500 your program continues 500 interrupt routine here 510 PRINT Door Open 520 DR 1 Sets flag to signal door open 530 RETURN ITR 3 Ret from interrupt routine to normal program flow COMMANDS The following is a list of the CAMBASIC IV commands used for interrupt functions 5082 Interrupt Commands Command Function ON ITR Enables a program branch on an interrupt RETURN ITR Re enables an interrupt and returns program control Interrupt Handling 62 Appendix A COMPONENTS This appendix contains information which may be helpful to you if you are using non Octagon components with your 5082 Microcon troller For additional information please refer to the user manuals supplied with your equipment CUSTOM COMMUNICATION CABLE The 5082 requires an RS 232 serial communications cable to interface to the PC If you are not using a VTC series cable you can make your own communications cable 1 Determine if your PC requires a male or female connector 2 Refer to the following table for cable connections needed with the 5082 5082 Custom Communication Cable 3 TxD Transmitted data 3 2 5 RxD Received data 2 3 POWER MODULE The 5082 needs a 5V power module which is generally purchased and installed with your card cage If you are not using the Octagon power module you can use any well regulated power module that can furnish at least 200 mA Po
61. tten to more than 10 000 times The number of read cycles is unlimited Programs are written to the EEPROM by using the on card programmer Programs are read from the EEPROM downloaded written to the system RAM in U11 and run from system RAM You can also use a 32K EPROM in the 5082 It also provides nonvolatile memory and can be used to store programs However to store programs to the EPROM you must use an off card programmer ADDING MEMORY Installing RAM Chips The 5082 is shipped with a 32K static RAM installed in socket U11 The card is designed to accept 32K 128K or 512K RAM chips Adding Memory 17 To install a RAM chip d Turn off power to the 5082 2 Remove the memory chip from socket U11 3 Install the new memory chip in socket U11 4 Make the appropriate jumper connections in jumper W2 5082 RAM Select W2 Pins J umpered 2 3 32K 128K 1 2 512K default NOTE Improper setting of W2 jumper may result in faulty operation Installing a Battery Backup Module Y ou can use a battery backup module such as the Dallas DS 1213D DM SmartSocket for nonvolatile storage of system vari ables and data stored in your system RAM The DS 1213D DM is a 32 pin module with built in power fail circuitry and a dual battery system The DS 1213D provides battery backup for a low power 32K or 128K static RAMs The DS 1213DM battery backs 128K or 512K RAMs To install the SmartSocket 1 Tur
62. uide for additional information Storing in RAM 23 COMMANDS The following is a list of the CAMBASIC IV commands used with the RAM 5082 Memory Commands Command Function Save or return a value from extended memory The PEEK and POKE commands save and retrieve byte values DPEEK Returns 16 bit value from memory DPOKE Writes 16 bit value to memory address PEEK Returns string from memory PEEK Returns floating point number from memory POKE Writes byte into memory location POKE Sends string to memory address POKE Stores data in memory Storing in RAM 24 Chapter 5 STORING IN EEPROM INTRODUCTION Programs are stored in the EEPROM which is installed in socket U9 You can store one program with a maximum size of 32K if you are using a 32K EEPROM or you can store up to four programs each with a maximum size of 8K Refer to the CONFIG SSD command in the CAMBASIC IV Programming Guide for storage options The 5082 Microcontroller is shipped with a 32K EEPROM in socket U9 The EEPROM is nonvolatile retains memory even when power is disconnected has an unlimited number of read cycles and each memory location can be written to more than 10 000 times Programs are not run from EEPROM Instead the program is downloaded to RAM in socket U11 Programs in RAM can be run or modified then uploaded to either your PC or the EEPROM This chapter includes directions for loading and stor
63. wer module voltage should be in the 5 4 0 25V range when measured at the connector pins Ripple should be less than 50 mV If you are using a switching power module excessive high frequency noise may cause erratic operation The noise plus the power module voltage must not vary outside the 5V 0 25V range Non Octagon Components 63 To use your power module with the 5082 Microcontroller Connect the negative lead from your power module to the terminal marked DG on the backplane Connect the 5 lead to the terminal marked 5 The leads should be no longer than 18 inches and must be 18 gauge or larger Please note that with some expansion cards for example the 5700 12 bit Analog Input Card you will need 12 volts power module Refer to the expansion card s user s manual for more technical specifications USING OTHER SERIAL COMMUNICATIONS SOFTWARE PC SmartLINK is a serial communications software package designed by Octagon It provides communications between a PC and other equipment If you are using a software package other than PC SmartLINK you may need to make some modifications before your serial communications will work Please note that although other packages may be used successfully they are not supported by Octagon Some issues and considerations e CAMBASIC IV is an incremental line compiler As you type in a line of your program for example 1000 IF A 3 then print A 3 CAMBASIC compiles that line in
64. with the power off nothing will happen Applying a 5V input toa CMOS card will cause the current to flow through the input and out the 5V power pin This current attempts to power up the card Most inputs are rated at 25 mA maximum When this is exceeded the chip may be damaged Failure on power up Even when there is not enough current to destroy an input described above the chip may be destroyed when the power to the card is applied This is due to the fact that the input current biases the IC so that it acts as a forward biased diode on power up This type of failure is typical on serial interface chips Using CMOS Circuitry 3 Serial and parallel Customers sometimes connect the serial and printer devices to the Micro PC while the power is off This can cause the failure mentioned in the above section Failure upon power up Even if they are connected with the Micro PC on there can be another failure mechanism Some serial and printer devices do not share the same power AC grounding The leakage can cause the serial or parallel signals to be 20 40V above the Micro PC ground thus damaging the ports as they are plugged in This would not be a problem if the ground pin is connected first but there is no guarantee of this Damage to the printer port chip will cause the serial ports to fail as they share the same chip Hot insertion Plugging cards into the card cage with the power on will usually not cause a problem Octagon urg

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