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I-O Display Systems Basic I/O Product Network Card User Manual

1. RS 422 485 CONNECTION SEQUENTIAL DISPLAY POWER CONNECTION ay qp v GND E H Lola Ed E Mm L1 POWER FUSE 3 5 AMP op FG 7 i S G a TY dE Fa I ai POWER INDICATOR E E y 9 a WU A 9 LE S TG 1 3 TR RES ed J of M X Li E m dmi gm lt SETUP PUSH BUTTON gt NETWORK CONFIG 3 SWITCHES SS eer EI EE 5 Bada SMBxx 2 RECV TRANS gt gt VL NETWORK TRAFFIC Figure 2 3 BASIC I O AD Connectors Switches and Indicators 2 8 Vol 2 Installation 2 The three basic communication connections for individual BASIC I O ADs are Repeat Used in RS 422 networks to extend range to 5000 feet between units Sequential Display reads L1 Multidrop Used in RS 422 or RS 485 networks Provides a total network range of 5000 feet Display reads L2 Last Unit Must be used in RS 422 and RS 485 networks for the unit most distant from the host Sequential display reads L3 If there is only one BASIC I O AD in a network it is designated L3 For the network layout the sequential display indicates the letter L followed by 1 2 or 3 As shipped BASIC I O ADs are setup as 13 Last Unit This parameter is not changed by push button but is displayed as 11 L2 or L3 after the dip switches have been set and the unit has undergone a power cycle 2 9 Vol 2 Installation 2
2. Nous isv ldMIzez IE TUE tmnt TRA olla al allel 023420 TS IN OO SMBxx CD RECV TRANS Ls N N NETWORK TRAFFIC Figure 2 9 BASIC I O Connectors Switches and Indicators Unit type digital or analog Unit address baud rate and 2 or 4 pass protocols are all pushbutton configurable and appear on the sequential display After line power application and the performance of system diagnostics there is a five second period during which these setup values any be changed Changed values are automatically saved on a non volatile EEPROM 2 13 Vol 1 Setup amp Installation 2 Analog Digital The BASIC I O system must be configured to accept either Analog or Digital I O modules The current I O type is displayed on the sequential display and is indicated by the character following the U The unit will display a 1 if the unit is configured as digital and a 2 if the unit is analog This value is stored in EEPROM and need only be set once The factory default I O type is digital Changing the BASIC I O I O type is explained after the description of addresses baud rates hand shaking and network types Addresses Each host instruction includes an address made up of two hexadecimal characters 00h to Ffh This address determines which chassis is to execute the instruction being sent all other chassis are to ignore the instruction Each BASIC I O chassis has a unique address
3. TO NEXT OR LAST BASIC VO N e SMBxx cp SET DIP SWITCHES TO THE DESIRED RS 422 COMMUNICATION MODE MULTIDROP OR REPEAT MULTIDROP SHOWN Figure 2 6 RS 422 BASIC 1 O To BASIC I O multidrop Figure 2 6 shows two individually shielded twisted pairs of AWG24 Each pair has a drain wire connected to its shield These drain wires are then connected to the signal grounds at each unit A separate shield encases the entire cable The drain wire for the over all shield is tied to earth ground at one end An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required Omitting this signal ground in industrial applications can lead to unstable operation and costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30 AWG An alternate means of network connection is to use the ten pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins 16 02 0103 In addition to the BASIC I O to BASIC I O wiring the installer should confirm that the network type switches are set in their correct position Multidrop Repeater or Last unit NOTE The number of BASIC I
4. Installation 2 Power Wiring Power connections are made at the 2 position terminal block located on the module board marked 5V and GND No 8 captive wire clamps accept 10 16 AWG wire or spade lugs Power wiring conventions of the power source to the terminal marked 5V of the power source to the terminal marked GND Power requirements Voltage 5 0 5 4Vdc Current 250 mA 25mA per digital module and 200mA per analog module Practices In general it is good practice to reserve the 5 Vdc power supply exclusively for the task of powering one or more BASIC I O ADs As with any microprocessor based equipment reasonably clean power is required for reliable operation Sharing power with other devices such as field signal transducers and contact excitation should be avoided 2 2 Vol 2 Installation 2 Designing the Network In order for the BASIC I O AD to share its data with the host computer it must be linked via a serial connection This link can be hard wired using an RS 422 dual twisted pair or an RS 485 single twisted pair connection where the wire run between devices is less than 5000 feet In any event the appropriate transmitter of the BASIC I O AD will be connected to a suitable receiver of the host computer Multiple BASIC I O AD chassis can be networked together to service large numbers of I O points These serial connections can be either multidrop or repeat Multidrop Repeat Multidrop networks can be up
5. Pulse Counting Pulses can be counted up to a total of 65 535 To be reliably counted pulses must have a minimum On and Off time of 1 millisecond Thus the maximum counting rate for a 50 duty cycle square wave is once every 2 milliseconds 500Hz Frequency Direct frequency measurements can be made on digital inputs at rates of up to 500 Hz with a user specified time base of from 01 to 2 55 seconds 1 4 Vol 1 DIGITAL OUTPUTS The Basic I O 1 Digital output modules commonly referred to as solid state relays control external AC or DC power sources A dry contact mechanical relay with very low contact resistance is also available Digital output instruction types are Set outputs Pulse Generator Modifiers One Shot Delayed Square wave Can set individual or multiple outputs On or Off Can generate 1 to 65 535 50 duty cycle pulses whose equal On and Off periods can range from 0 01 to 2 55 seconds Resolution can be reduced by a factor of 1 256 on a system wide basis to increase the maximum pulse width available Can generate On or Off pulse durations of up to 10 9 minutes with a resolution of 0 01 seconds Resolution can be reduced by a factor of 1 256 on a system wide basis increasing duration up to 46 hours Re triggering is available Can generate delayed On or Off outputs after delaying up to 10 9 minutes with a resolution of 0 01 seconds Resolution can be reduced by a factor of up 1 256 on a syste
6. IAC5 IDC5D IAC5A IDC5S DC AC DC DRY CONTACT SENSE Figure 2 14 Digital Input Wiring 2 23 Vol 1 Setup amp Installation 2 Digital Outputs Modules should NEVER be installed or removed while power is applied to the BASIC I O The power for ODC5 ODC5A OACS and OACSA digital output modules comes from a source external to the BASIC T O Because they contain a protective reverse diode the ODC5 and ODCSA output modules are polarity sensitive and operate correctly only when the terminal is positive with respect to the terminal A DC digital output module connected backwards conducts current through its protective diode and therefore cannot be controlled Polarity does not affect the performance of the OAC5 and OACSA Digital output modules Because the field sides of output modules are totally isolated from each other like polarities can be wired common to make use of a single power supply The wiring of digital output modules can be verified by the host issuing a configure as output instruction control 1 followed by an output on off digital J instruction See software protocol manual or quick reference card for instruction details The module status indicator should follow the instruction It should be noted that the status indicator only follows the logic instruction to the modules and does not show that the module its fuse or that external power is present Outputs can only be verified by observing the device or by a multime
7. 1200 126 8 126 127 104 10 104 154 2400 64 16 64 252 58 17 58 277 4800 32 31 32 496 35 29 35 9600 17 60 17 962 23 19200 9 113 9 1816 18 38400 5 204 5 3261 15 Input Analog L Output Analog S Channel 16 Channels Channel 16 Channels bid ez gee ll did ERAS ed Er ds Chan Sec Chan Sec 16 Ch 300 2 6 484 1984 2 8 600 323 3 1323 12 250 4 1000 16 1200 164 6 664 24 134 7 509 31 2400 85 12 335 48 75 13 263 61 4800 46 22 71 94 46 22 140 114 9600 26 39 88 181 32 32 78 204 19200 16 63 47 339 24 41 48 335 38400 11 91 27 602 21 48 32 494 1 6 Vol 1 The Basic I O 1 It should be noted that the values in the preceding throughput tables and the following equations reflect only the communications overhead and inherent processing delay of the BASIC I O equipment In practice a significant amount of overhead will be devoted to other processing tasks such as screen updates Data logging etc Typically these other tasks become the limiting factor in the overall throughput The equations below can be used for determining the hardware s role in throughput for any number of channels t is in Milliseconds Throughput for digital I O is independent of the number of channels Digital Input Data Digital M Time for 1 16 channels t digital Input 1000 150 Baud Rate 0 001 Digital Output Execution Digital J Time for 1 16 channels t digital Output 1000 110 Baud Rate 0 012 Throughput for analog I O varies with the num
8. 2 6 Vol 2 Installation 2 Network load V S Noise suppression In order to improve RS 485 Bus noise immunity particularly under tri state conditions a pair of Network Bias Resistors have been installed in each BASIC I O AD unit This design feature has been implemented in order to satisfy the majority of our customers If it is necessary to multidrop more than eight BASIC I O AD units but ultimately less than thirty two devices It will be necessary to remove these network bias resistors so as to not exceed the maximum bus loading However in order to retain noise immunity the network bias resistors should remain installed in at least one BASIC I O AD on the network Figure 2 4 below shows the location of the four network bias resistors R34 is the 1 5k from prior bias resistor R35 is the 1 5k from prior bias resistor R36 is the 1 5k from next bias resistor R37 is the 1 5k from next bias resistor a AND REMOVE THESE 4 RESISTORS FOR LARGE NETWORKS raz S E nl au oO LJ L E oo C BDOxx A SLB Figure 2 2 Network Bias resistor locations 2 7 Vol 2 Installation 2 Network Type Switches Based upon the selected network configuration each BASIC I O AD must be setup before communications can begin This is done with the network switches shown in figure 2 3
9. Communications Wiring Host to BASIC I O AD RS 422 SET DIP SWITCHES TO THE DESIRED RS 422 COMMUNICATION MODE MULTIDROP OR REPEAT MULTIDROP SHOWN HOST PC WITH RS 422 COMM CARD INSTALLED a D 5V GND RS 422_ NY 0900017 Allo 8 E 11 EN im AT TO NEXT 1 0 PLEXER O RECV TRANS Figure 2 7 RS 422 Host to BASIC I O AD Figure 2 7 shows two individually shielded twisted pairs of AWG 24 Each pair has a ground wire connected to its shield These drain wires are then connected to the signal grounds at each unit A Separate shield encases the entire cable The drain wire for this over all shield is tied to earth ground at one location An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required However omitting this signal ground in industrial applications can lead to costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30AWG An alternate means for network connection is to use the 10 pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins number 16 02 0103 In addition to the Ho
10. The factory default address is 00 Changing the BASIC I O address is explained after the description of baud rates hand shaking and network types Baud Rates Any One of the standard baud rates of 300 600 1200 2400 4800 9600 19200 or 38400 can be used for the serial network communications The sequential display indicates the letter H followed by the baud rate divided by 100 BASIC I Os are shipped at 9600 baud the sequential display indicates H096 Changing the BASIC I O baud rate is explained after the description of hand shaking and network types 2 14 Vol 1 Setup amp Installation 2 Protocol Handshake Types Two protocol handshake types are available 2 pass and 4 pass 2 Pass The host transmits an instruction to a BASIC I O If the instruction is correctly received i e valid address instruction type and correct checksum the BASIC I O executes the instruction and returns the letter A and a cr or where data is to be returned the letter A then the data followed by a two character checksum ending with a cr 4 Pass The host transmits an instruction to a BASIC I O If the instruction is correctly received 1 e valid address but not necessarily the correct instruction type nor checksum the BASIC I O returns an A followed by the Echo of the instruction and does not execute it If the host then transmits an E the instruction is executed in the same manner as the 2 pass If the Hos transmits any ot
11. a Host transmits inquiry requests to the BASIC I O AD to determine the status of its various process inputs Similarly the software in the Host computer makes control decisions and transmits instructions to the BASIC I O AD which in turn makes the proper changes to its various outputs Both the Host and its communications link are essential elements in this data acquisition and process control scheme Originally the protocol only allowed for all analog or all digital I O chassis Depending on application requirements each BASIC I O AD can respond to pup to three different function addresses With their abbreviations they are MC Master Unit Control function address MD Master Unit Digital I O function address MA Master Unit Analog I O function address It is this multiple function addressing capability of BASIC I O ADs that allows them to utilize without modification software developed for competitive products Similarly BASIC I O ADs can operate simultaneously on the same network with these products 1 3 Vol 2 Introduction 1 Available I O functionality Analog Input Functions Input value Determines signal levels with 12 bits resolution 1 Offsets Input values can be software offset with 12 bits resolution over the module s specified range Gain Slope The amplitude of input values can be software multiplied by factors ranging from 0 25 to 4 0 Range Limits The occurrence of input values falling out of user defined upper
12. communications can be tricky at best and should be seriously considered before being adopted Third party software users should make sure that the package they have chosen supports the particular RS 485 communications card to be used COMMUNICATION WIRING The Host to first BASIC I O can be RS 422 or RS 485 Most Host computers come equipped with an RS 232 serial port A choice must be made to either equip the host with an RS 422 or RS 485 card or to use an external RS 232 to RS 422 485 converter For ranges less than 5000 feet both RS 422 and RS 485 networks can operate in multidrop mode For ranges greater than 5000 feet RS 422 NOT RS 485 networks can operate in repeater mode In this mode the distance between individual units can be up to 5000 feet The trade off for using the repeat mode is that the powering down of any single unit disables communications with all units further downstream from the host A network of BASIC I O s must be made up of units which are configured as either all multidrop or all repeat 2 7 Vol 1 Setup amp Installation 2 Network load V S Noise suppression In order to improve RS 485 Bus noise immunity particularly under tri state conditions a pair of Network Bias Resistors have been installed in each BASIC I O unit This design feature has been implemented in order to satisfy the majority of our customers If it is necessary to multidrop more than eight BASIC I O units but ultimately less
13. 0 ccc ccc e m n 1 7 Options 5 sirs A al eed eee ead Ce ed enc EE 1 7 Available I O Modules ceca cete ed A OER AS e RES CA EAS K 1 8 Installation oe oie ae RR ke eae tS Theda DE RR RETRO RU e RR CR RR E aS 2 1 Mounino O arian Sd UU erri vs eris er ie aii ey 2 1 Power Wirtlg zorra tre ee Re e e tta ain dra aa la aba ey 2 2 Designing the Network aaa n 2 3 Multidt p eieaa ea kp erata A recor Ae 2 3 Repeat us cest vente I e na R ee gale A ARS 2 3 RS CUL GIDS esti E E sal S RUDI AIS im 2 4 RSASS esee ir dns dade nr is nn dj as 2 4 RS 485 Programming aaa aaa 2 5 Communication Wiring aaa 2 6 Network load V S Noise suppression 0 0 e cece cece eh 2 7 Network bias resistors 2 6 cence ha 2 7 Network Type Switches aaa 2 8 Repeat sses mies vun aga AS es GO 2 9 Multidt p i eects umet ane aet Saute Ral a to ente ah gee halted 2 9 East Wi bcd ds Ser CUP A Haste RA CE Sie Oe Aiwa aia K 2 9 Communications Wiring 2 1 0 0 aaa aaa 2 10 Host to BASIC VO AD RS ow cee eee 2 10 Vol2 Table of Contents RS 485 Host to BASIC I O AD 2 eee n 2 11 BASIC I O AD TO BASIC I O AD RS 422 20 ce 2 12 BASIC I O AD to BASIC I O AD RS 485 0 ke ee 2 13 Installing the I O modules i nesens ciues aaa 2 14 Module Wiring E ER Oe SS RARE RE ERA AU ARE 2 15 Analog Inputs eiue eden rediens K ass eee date e eae 2 15 Analog outputs iros rta HEUS EIER E UMS ame ease eae 2 17 Digital Inputs eeclesie eer eer e AI E
14. 2 1 POWER WIRING 55 222 set ont den iud wt qiu abut idem du 2 2 COMMUNICATING WITH THE BASIC I O ssseseee ee 2 3 Mult dt p tes da ved ier ue des I EA EDO CE TG dees sa 2 4 A b A bd IURE RUE MILES RAE 2 4 RS 422 1 Aw she lem or v hup voles a AT bn velot cr mum en 2 5 RS 489 id i Ri beds 2 5 RS 485 Programming 1 say cae Soak res i 4 wee Sees UE tes ARI 2 6 COMMUNICATION WIRING 0 0 ccc cc eee een m n 2 7 Network load V S Noise suppression 00 0 cece e eect eh 2 8 Network Bias Resistors 1 1 0 aaa 2 8 RS 422 HOST TO BASIC VO 2 cece eens 2 9 BASIC I O TO BASIC I O RS 422 2 0 cece eens 2 10 RS 485 Host to BASICO i segas ias ssl de adie vas ede Gd eed 2 11 BASIC I O to BASIC I O RS 485 Multidrop only ooooooooooo 2 12 BASIC TO Setup erai da IEEE 2 13 Analog Digital 2 5 aper m het ted Lex eh etd CI Ley agr 2 14 Addresses a a vee de he at ead 2 14 B ud Rates 254 vues gas dobar bep vl EE NR Lun Siw ta daa 2 14 Protocol Handshake Types aaa 2 15 Network TypeSwitehn ess sab Shae steed ees dam aa 2 16 Vol 1 Table of Contents Communication verification 0 0 cece m 2 18 Hardware error codes 05 2 cc nce dd seat sh gc ata ey hd Sees i ok ma E Sead es 2 19 Hardware watchdog mein Em etd ea RS SUES 2 19 Sensor Actuator I O wiring 0 2 aaa 2 19 Analog Inputs zivs ass erem Bay diet ke is ad a linia 2 20 Analog Outputs i xe RR ER eee RR Re RR
15. AD from the host computer The LED merely indicates serial data It does not indicate that this data is valid nor at the proper baud rate The right network traffic LED marked TRANS blinks each time this BASIC I O AD sends data to the Host computer factor default values for an IOP AD 3 depicted in this example 3 5 Vol 2 Setup 3 Hardware error codes When the BASIC I O AD is initially turned on it goes through internal self testing If anything is not correct the appropriate error code will flash on the sequential display Try cycling power if that does not resolve the error condition please call duTec technical support at 800 248 1632 3 6 Vol 2 Vol 2 Index Analog Inputs iio li er ble ets lee vies Gale ebony hele es 1 8 2 15 Analog Outputs sete nS sacle pa das beets eee a ah a E ea dee K as 1 8 2 17 B udir te ces HP 3 3 Cabling Costs ss rt esse ree hee HIR ADU wage K EATEN age WRT eRe 1 1 Chassis Set p Las ri A CIR AA elec a RE Pa V Mil 2 1 Communicat onsi Sere tam el tameu LU ek a fo eei vehe cc 1 7 Communications watchdogs ooooooooooonrcr o 1 2 Digital Inputs ois ce ettet me hp ree E EE T pede Ie MIR ACRI Basie 1 8 2 18 Digital Outputs oo A BAI ede ERAI Rar eas 1 8 2 19 Environments E ar c To RE ORTUS 1 7 Prequency A te Te AS Ud eA A ERE E E S I ee A oe TD I AREA Mie Ln 1 8 ISol t1Ofi lt oir erem 1 2 Modules 22 m here qt Pt AAA ee i is i EN M eee 1 8 Mounting 3 35 eere mere ede ter ed ee a tei
16. AWG 24 Each pair has a ground wire connected to its shield These drain wires are then connected to the signal grounds at each unit A Separate shield encases the entire cable The drain wire for this over all shield is tied to earth ground at one location An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required However omitting this signal ground in industrial applications can lead to costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30AWG An alternate means for network connection is to use the 10 pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins number 16 02 0103 In addition to the Host To BASIC I O wiring the installer should confirm that the network type switches are set in the correct position Multidrop Repeater or Last Unit 2 9 Vol 1 Setup amp Installation 2 BASIC I O TO BASIC I O RS 422 MULTIDROP OR REPEATER FROM PRIOR BASIC VO OR HOST iow eo IES n L212 EC Li Bars Bs a gt 4 75 Mju 2 EE b Fe O poo Hen E S UN li div Go g
17. Analog L See the software protocol manual or quick reference card for instruction details Figure 2 10 figure 2 11 and figure 2 12 show the wiring for various types of analog inputs With the exception of thermocouples and RTD modules connections are made via the black terminal strip In the case of thermocouples and RTDs mating connectors are included There must be nothing connected to the screw terminals corresponding to these module positions The source of analog input voltage or current is external to the BASIC I O with the exception of ITP590 ITR10 ITR100 and ITR100 1 O LOAD Optional diodes 0 E to protect CT when module or fuse is removed IVAC IVAC A NAC Figure 2 10 AC Current and Voltage Wiring 2 20 Vol 1 Setup amp Installation 2 Voltage source sensor Current source sensor 250 OHM 11420 VOLTAGE CURRENT Figure 2 11 Analog Voltage and Current input Wiring ICTD PROBE E EM OMEGA GONIN CONN TYPE I SMP TYPE G ES 2 MTP 6 ITP590 ITR100 Figure 2 12 Temperature Input Wiring 2 21 Vol 1 Setup amp Installation 2 Analog outputs Modules should NEVER be installed or removed while power is applied to the BASIC I O Following insertion in their respective sockets modules should b secured with their captive screw Correct polarity is essential to proper operation N
18. I O AD with the exception of ITP590 ITR10 ITR100 and ITR100 1 Optional diodes to protect CT when module or fuse is removed IVAC IVAC A NAC Voltage Current Figure 2 11 AC current and voltage wiring 2 15 Vol 2 Installation 2 Frequency Source Voltage source sensor Current source sensor sensor 100K Ohm IF10K B dst IF2 5K L OHM IF5K L IF10K L 11420 Frequency VOLTAGE CURRENT Figure 2 12 Analog Voltage frequency and Current input Wiring ITP590 ITR100 Figure 2 13 Temperature Input Wiring 2 16 Vol 2 Installation 2 Analog outputs Modules should NEVER be installed or removed while power is applied to the BASIC I O AD Note Analog modules run hot to the touch Both voltage and current output modules provide their own isolated power output This eliminates the need for external power supplies and insures electrical isolation between each output This also makes it possible to wire voltage outputs in series to obtain larger voltage swings Module status indicators for analog outputs blink briefly as outputs are updated It should be noted that the status indicator only follows the logic instruction to the modules and does not indicate the output status Outputs can only be verified by observing the output device or by a multimeter or oscilloscope measurement CURRENT LOAD OV5 Ov10 01420 01420 Figure 2 14 Analog Voltage and Current Output Wiring OI420
19. Os that can be networked in a multidrop configuration before a signal amplifier An external repeater is needed depends greatly on external factors Repeater networks are unlimited 2 10 Vol 1 Setup amp Installation 2 RS 485 Host to BASIC T O RS 485 Tor FROM LED00090900 1 5V GND m L212 GND Em E Hi TY 14 TB 0 FB FY lt y G S2 M TG gt TR a es Lb E E lt k oS TONEXT J 1 El VO PLEXER R RECV_ TRANS 1 SET DIP SWITCHES TO MULTIDROP FOR RS 485 COMMUNICATIONS SHOWN Figure 2 7 RS 485 To BASIC I O Figure 2 7 shows one individually shielded twisted pair of AWG 24 Each pair has a drain wire connected to its shield These drain wires are then connected to the signal grounds at each unit A separate shield encases the entire cable The drain wire for the over all shield is tied to earth ground at one end An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required Omitting this signal ground in industrial applications can lead to unstable operation and costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 1
20. SETUP LED E PULL UP SWITCHES Switch h Serial Number RS 422 485 TERMINAL ALT 422 485 MOLEX CONN Figure 3 17 Connectors Switches and Indicators During the setup phase of a BASIC I O AD system the chassis is given specific values for unit address analog digital separator network baud rate and protocol pass type A momentary pushbutton and seven segment display provide access to these parameters Figure 3 17 shows the location of these components labeled setup pushbutton and sequential display Function addresses Each host instruction includes an address made up of two hexadecimal characters 00h FFh At any BASIC I O AD network connection 3 different types of functions can be performed each with its own unique system wide function address There are two BASIC I O AD addressing modes offset and variable Offset Mode Units are shipped in the offset mode where only master init control address needs be set with a range of 00h 3Fh The remaining function addresses are automatically calculated and set based on master address 3 1 Vol 2 Function Abbrev Function Sequential Display Address 00h 0 UO 00 MC Master Unit Digital I O 40h 64 U1 40 son 128 2 80 Master Unit Control Master Unit Analog I O The OFFSET addressing mode is more convenient to use as only one address setup is required for each network connection For example changing the mas
21. currents the outputs of thermocouples RTDs and 590 type temperature probes BASIC I O instructions provide linearized thermocouple and RTD sensor data Engineering unit conversion is performed by the host software such as duTec s EASYIO program generator The BASIC I O samples individual analog inputs at the constant rate of samples per second The effective sample rate per channel is determined by the total number of channels to be sampled Analog input instruction types are Input Value Determines signal levels with 12 bit 1 part in 4096 resolution Offsets Input values can be software offset or Zeroed with 12 bit 1 part in 4096 resolution over the module s specified range Gain Slope The amplitude of input values can be software multiplied by factors ranging from 0 25 to 4 0 Range Limits The occurrence of input values falling out of user defined upper or lower limits can be flagged Minimums The minimum level of input values can be captured Maximum The maximum level of input values can be captured Averages Can calculate average input amplitude for 1 65 535 samples Temperature Provides linear temperature in C for thermocouples RTD and type 590 temperature probes Thermocouple modules provide cold reference junction compensation 1 2 Vol 1 The Basic I O 1 ANALOG OUTPUTS Analog output modules are 100 isolated These self sourcing modules provide the voltage or current necessary to drive
22. or lower limits can be flagged Minimums The minimum level of input values can be captured Maximums The maximum level of input values can be captured Averages Can calculate average input amplitude for 1 65 535 samples Temperature Can linearize in C inputs from thermocouples and RTDs Will also return temperature probe data Analog outputs Level Value Can set output levels as a function of the module s full scale range and are specified with 12 bits resolution Waveforms can provide square triangular sawtooth or ramp waveforms Maximum and minimum amplitudes as a fraction of the output module s full scale range are specified with 12 bits resolution Waveform periods are specified 0 1 to 6 553 Sec 109 Min All waveforms are made up of at least ten segments 1 One part in 4095 1 4 Vol 2 Read Pulse widths Pulse counting Edge detection Introduction 1 Digital inputs Read the on or off of all inputs The duration of a single or total on off time of consecutive pulses can be resolved to the nearest 0 00 seconds for a max total of 10 9 minutes or 46 6 hours with multiplied resolution Positive or negative edges initiate measurements The time scale can be multiplied by a factor of 1 256 on a system wide basis Pulses can be counted up to a total or 65 535 To be reliably counted pulses must have minimum on and off times of 1 mSec Thus the maximum counting rate for a 50 duty cycle squarewave with eq
23. other devices such as field signal transducers and contact excitation should be avoided 2 2 Vol 1 Setup amp Installation 2 COMMUNICATING WITH THE BASIC I O The BASIC I O is designed to serve as an intelligent I O front end for a Host computer Typically a P C The host and BASIC I O communicate over a serial link This interchange is half duplex in nature that is to say the host and BASIC I O will never be transmitting at the exact same time Further the communications protocol is considered speak only when spoken to the Host must poll the BASIC I O whenever it needs fresh data This polling is accomplished when the host sends an instruction to the BASIC I O The BASIC I O will then generate a reply Each valid instruction will illicit a corresponding response The integrity of this communication is verified using message content checksums The serial communication is a form of ASCII printable characters and makes heavy use of the hexadecimal numbering system The format of the ASCII characters used is One start bit eight data bits one stop bit and no parity 2 3 Vol 1 Setup amp Installation 2 BASIC I Os can be networked together to obtain up to 4096 I O points of data These serial networks can be either multidrop or repeat MULTIDROP NETWORK Drives load less than 5000 feet or 32 Basic I Os TO I j TE I 1 E Vau TF TF TF TF TF TF OR OR JOR OR OR OR o o
24. standard instrumentation loads All are updated every 10 Ms or 100 times per second Analog output instruction types are Level Value Can set output levels as a fraction of the module s full scale range and are specified with 12 bit 1 part in 4096 resolution Waveforms Can provide square triangle sawtooth or ramp waveforms Maximum and Minimum amplitudes as a fraction of the output module s full scale range are specified with 12 bit 1 part in 4096 resolution Waveform periods are specified from 0 1 to 6 553 seconds about 109 minutes 1 3 Vol 1 The Basic I O 1 DIGITAL INPUTS Digital input modules detect the presence or absence of a field signal Module types vary from AC to dry contact sense Because the industry standard modules are optically isolated the response time performance of digital input instructions can be limited by the delay in the input modules themselves Some modules can have rise and fall times of up to 40 milliseconds Digital input instruction types are Read Read the On or Off state of a inputs This data is updated every 10 Milliseconds Edge Detection Off to On and On to Off transitions can be detected within 1 millisecond of their occurrence Action is only reported every 10 milliseconds Pulse Widths BASIC I Os can report pulse width measurements from 01 seconds to 46 6 hours Minimum resolution is 01 seconds Pulse widths up to 10 9 minutes Either on or off pulses can be measured
25. the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30 AWG An alternate means of network connection is to use the ten pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 577 9005 and uses pins 16 02 0103 In addition to the BASIC I O AD to BASIC I O AD wiring the installer should confirm that the network type switches are set in their correct position Multidrop Repeater or Last unit 2 12 Vol 2 Installation 2 BASIC I O AD to BASIC I O AD RS 485 I 1 p lt o E o 3 mo a FROM PRIOR BASIC gt Eno EG VO OR HOST EIL S mb fy E F8 Ha s ri TR 9 alu IEEE TO NEXT OR LAST EC E plosa SET DIP SWITCHES TO THE MULTIDROP POSITION FOR RS 485 COMMUNICATIONS Figure 2 8 RS 485 BASIC I O AD to BASIC I O AD Figure 2 8 shows one individually shielded twisted pair of AWG 24 Each pair has a ground wire connected to its shield These drain wires are then connected to the signal grounds at each unit A Separate shield encases the entire cable The drain wire for this over all shield is tied to earth ground at one location An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equ
26. to 5000 ft long end to end Each station is passively located on the network and represents one Drop or load to the host communication driver A multidrop network will tolerate loss of power to any one station without effecting the rest of the network RS 485 can only be multidrop Signal boost may be necessary depending on line conditions and number of drops Repeat networks can be as long as 5000 ft between each unit Each station plays an active role in communications to other units If power is removed from a unit in a repeat network communications to units downstream from it will be lost as well 2 3 Vol 2 Installation 2 RS 422 Advantages Easier to implement in software since host driver need not be controlled Can be either Multidrop or Repeat No turn around delay required Disadvantages Requires five conductor wire instead of three RS 485 Advantages Needs only 3 wire conductor Disadvantages Host 485 driver control must be implemented reguiring tricky serial port manipulations Can only be Multidrop Usually requires turn around delay implementation 2 4 Vol 2 Installation 2 RS 485 Programming The BASIC I O AD will work equally well when connected as RS 422 or RS 485 However special host programming considerations may be necessary when implementing an RS 485 network Unlike RS 422 where both the transmit and Receive signals have their own differential pair of conductors RS 485 utiliz
27. 4 to 30 AWG An alternate means of network connection is to use the ten pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins 16 02 0103 In addition to the BASIC I O to BASIC I O wiring the installer should confirm that the network type switches are set in their correct position Multidrop Repeater or Last unit 2 11 Vol 1 Setup amp Installation 2 BASIC I O to BASIC I O RS 485 Multidrop only cp 5v GND eB dm I FR FROM PRIOR BASIC mc ES Ty 3 mro rB Dot s 9 Pe fo Ti E TR 2 Lt E lt lt gt a i Ss i E A 2 Wy mm 07 aaa a D a sumo lt b a q rsv enD 3 JS He e ECS IES TO NEXT OR LAST jo B i adt SET DIP SWITCHES TO THE MULTIDROP POSITION FOR RS 485 COMMUNICATIONS Figure 2 8 RS 485 BASIC I O to BASIC I O Multidrop Figure 2 8 shows one individually shielded twisted pair of AWG 24 Each pair has a ground wire connected to its shield These drain wires are then connected to the signal grounds at each unit A Separate shield encases the entire cable The drain wire for this over all shield is tied to earth ground at one location An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical no
28. D Hardware Users Manual dulec 6979 Wales Road Phone 419 666 4700 E Mail info dutec net Northwood Ohio 43619 TL Free 6002401632 http www dutec net BASIC I O AD Nov 24 2004 Copyright Copyright 1995 duTec Inc All rights reserved However any part of this document may be reproduced provided that DuTec Inc is cited as the source The contents of this manual and the specifications herein may change without notice Trademarks The DuTec logo and the BASIC I O AD are trademarks of DuTec Inc Notice to the User The information contained in this manual is believed to be correct However DuTec Inc 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 DuTec Inc makes no representation or warranty that such applications will be suitable for the use specified without further testing or modification duTec Inc general policy does not recommend the use of its products in life support applications where failure or malfunction of a component may directly threaten life or injury It is a condition of sale that the user of duTec Inc products in life support applications assumes all risk of such use and indemnifies duTec Inc against all damage Warranty duTec Inc warrants its products to be free of defects in materials and workmanship for a period of two 2 years from the
29. K 100 To 924 C OACSJ ype K 110 To 1250 C ype R 0 To 960 C TCR 1 ype RO To 1760 C ODCS ype S 0 To 1034 C ODCSA ODCSR E Output 12 140Vac 3 5A Output 20 280 Vac 6 0A TCJ 1 O S I2 amp N ms NI e Sa lt m o Z A Z 9 E z E o yla Ololu EI ENO ilis gt els Hu a ela ele ct ti lt e Iw ale e u Z un e 2 gt bi Closed TCK 1 SSS 2 gt Electro Mechanical 0 5A Relay Form A Normally Open NO ITCS 1 TCT ype T 200 To 224 C TCT 1 ype T 120 To 400 C TCT 2 DCSZ 55 To 150 C 00 Ohm Pt 55 To 350 C 00 OhmPt 0 To 100 C Type 590 Temperature Sensor 188 4 To 150 C 50 0 To 150 C E S E e n o d o S fon o a SPECIAL PURPOSE Input 200mV 0 10KHz Digital ensor Power Supply 18 24 Vdc 30mA Digital Input Output Test Module with Field n S n ITR10 TR100 TR100 1 gt o gt 5 O E SUPPORT PRODUCTS Fuses use Assembly 0 062A use assembly 1 0A O TP590 TP590 1 les ies es use assembly 3 0A z use assembly 5 0A A EA El E LR E When selecting a power supply for the system assume 25mA for standard digital modules and 100 mA for marked with an The IDC5Z module is used for low level signals and will pass signals at the rate of 10KHz The BASIC I O however is limited to signals up to 500Hz 1 9 Vol 1 The Basic I O 1 DIAGNOSTICS To confir
30. R 1 Sensor Power Supply 18 24 Vdc 30mA TCS pe S 0 To 1034 C Digital Input Output Test Module with para TOS ASAS A TCT 3i TCT Ep T2 A SPECIAL PURPOSE SUPPORT PRODUCTS RTD Fuses TRIO 0 Ohm Cu 55 To 150 C FM 06 use assembly 0 062A 100 mA for odules marked with an TRIO Type 590 Temperature pS T AN TPT 500 To 15070 A When selecting a power supply for the system assume 25mA for standard digital modules and 100mA for modules marked with an The IDC5Z module is used for low level signals and will pass signals at the rate of 10kHz The BASIC I O AD however is limited by communications baudrate 1 8 Vol 2 Installation 2 Installation Mounting BASIC I O ADs come in 4 8 and 16 channel versions Figure 2 1 below shows the footprint of each Basic I OAD Using corner holes the unit can be mounted with 4 6 or 8 round head or pan head screws The BIO16 version has two additional mounting holes located near the center of the board as well Hole locations in relation to the overall dimensions for each are shown below 1650 1700 11 25 T ala a Al 4 eq 4 p 2 0 0 2 0 0 0 2jo e A H m0 mors _ E E B 81016 400 350 d IJ JL m I dulec 4 els e D BIO4 BIO8 BIO16 Figure 2 1 BASIC I O AD Footprint 2 1 Vol 2
31. ace aes Lek ated os 2 1 MultidiOD uem tret cem A SH BE IRR AAA 2 3 2 6 Network Bias Resistors ccce cte td r 1 ERE ANA ehe dud eis 2 7 Network Type Switch ect s 3 3 Noise suppr ssiOD es reser das tee ee etn aeg rh ue Maes e d da 2 7 POWER ses tle quitan AI IE RIA Ste Meanie A SUR dae Mo Pe Midi 1 7 Power Requirements ore e eee Ree ae A EW ae SR Ie E E 1 8 Power Witing eeue eme UE KA CIAR AA E E Yr EE V ir 2 2 Repeat zc sane een A A sua ede es uidi DIE PL edi 2 3 Repeater fa race ste sede Se FREE ENS EU REINES PERDERE IB e Ad PE es RENTE 2 6 A IERI UHR DASS Cet ote eke MIL Te CAII RH cr ip R 1 7 2 3 2 4 RS 485 obl aa QU NAUES ud qa DEA TUE er SAC E 2 4 2 5 REDA n Su is au rebar e elt Fe t ier p dd e ck zE 2 15 Sequential display oia reor a rte ie AS sce Tet e e eles 3 1 Setup 24 ceo a uen EAS Read Ule EA EINES EISE ROR NIME A ARS TD 3 4 Setup pushbuttom 0228 at cix ose iw ew e e y ee ua AA js 3 1 Signal conditioning eol Ellas eSI rhe ate Vae oe hen SITE a 1 2 SWITCHES da p 2 12 2 13 Temperature aims ue roue cA ea eke UM ATO AIR eld Km is eke RA TR E IRR 1 8 Thermocouple sotir ce as RED rum need ER A dece Ee Es 1 8 2 15 Vol 2 Index
32. al ground potentials everywhere the ground connection is not required However omitting this signal ground in industrial applications can lead to costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30AWG An alternate means for network connection is to use the 10 pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins number 16 02 0103 In addition to the BASIC I O To BASIC I O AD wiring the installer should confirm that the network type switches are set in the correct position Multidrop Repeater or Last Unit 2 13 Vol 2 Installation 2 Installing the I O modules Certain guidelines must be followed when installing I O modules on the BASIC I O AD Chassis In particular the analog modules must be grouped separately from the digital modules on each I O chassis Using the worksheets found on the next page place the desired I O modules in the indicated positions BASIC I O AD Module Placement Workshee I O AD Module Placement Worksheet Module Analog Digital Module PN i Remarks 3 4 5 6 A 8 9 10 11 12 13 14 15 1 Install all analog input modules beginning with module 0 the 1 and s t modules beginning with module 0 the 1 and so on If none are used skip this step 2 Install Anal
33. analog output modules provide the current into loops with total resistance less than 275 ohms If the loop resistance exceeds 275 ohms an external power supply must be added to the loop as shown in figure 2 13 correct polarity is essential 2 17 Vol 2 Installation 2 Digital Inputs Modules should never be installed while power is applied to the BASIC I O AD With the exception of IDCSS digital input modules input sensing current fomes from a source external to the BASIC I O AD IDCSS input modules provide their own current for sensing contact closures They can be DESTROYED if an external source is used The IDCS5 and IDC5D input modules are polarity sensitive and operate only when the terminal is more positive with respect to the terminal Polarity does not affect the performance of the IAC5 IAC5A or the IDCSS input modules Because the field side of input modulles are totally isolated from each other like polarities can be wired common to make use of a single power supply The wiring and operation of digital input modules can be verified by closing the individual input sensing contacts and observing the changes on the module status indicators They are on when the module circuit is energized IAC5 IDC5D IAC5A IDC5S AB DRY CONTACT SENSE Figure 2 15 Digital Input Wiring 2 18 Vol 2 Installation 2 Digital Outputs Modules should NEVER be installed or removed while power is applied to the BASIC I O AD The
34. anged as they appear in sequence by pumping the pushbutton As the button is pressed the display will cycle through the possible values for each character When the desired character is displayed simply wait for a brief period for the display to blank The next character position to be changed will then appear on the display The display continues to cycle through until there is a full cycle with no changes The BASIC I O then stores all values in EEPROM for automatic use following subsequent power cycles The unit is now in the operational mode and the sequential display becomes U1 00 H096 L3 P2 The underlined values represent setup parameters that can be changed If any desired changes were not completed line power can be recycled and the setup via pushbutton can be repeated if necessary 2 17 Vol 1 Setup amp Installation 2 Communication verification Network Debugging Most startup problems are related to the communication link The installer is urged after both the communications wiring and configuration have been completed to test the network before installing I O modules To test the serial communications link the host transmits the abbreviated test instruction gt NNA For each BASIC I O address on the network where NN is the address of each BASIC I O This appears on the Sequential display after the U1 or U2 Both the Host and the BASIC I O under test are used to verify wiring system configuration and operation I
35. area ke 2 22 Digital Inputs 1 oeunscerkeeeebtv y ERE Ur ER DUER n CHE PEE 2 23 Digital Output Wiring 12e ee wale REI P ee OS 2 24 ii The Basic I O 1 THE BASIC I O BASIC I Os are a family of small industrial grade remote data acquisition and control systems which exchange data with a Host computer via a serial communications link Controlled by a wide range of software running on a Host computer Basic I Os are located near the sensors and actuators The serial link eliminates the need for expensive and noise prone signal wiring between field sensors and actuators and a central control room Each BASIC I O system consists of one logic board connected to a 4 8 or 16 position I O module mounting rack This combination is then field configurable to accept either analog or digital electrically isolated input or output modules which can interface to a wide variety of sensors and actuators BASIC I O networks can service over 4000 analog and or digital I O lines in various combinations User selected serial communications between the Host and the first BASIC I O can be RS 422 or RS 485 These communications links allow the units to operate up to 5000 feet apart Baud rates from 300 to 38 400 are available The BASIC I O instruction set core complies 100 with that of the OPTO 22 Optomux With this ASCII character speak only when spoken to protocol a Host transmits inquiry requests to the BASIC I O to determine the status of
36. aster address is set the other addresses are automatically set 40H above each other The digit after the O indicates the analog digital separator The 3 digits after H show the baud rate divided by 100 initially set for 9600 baud 096 The 1 digit after P signifies the handshake protocol type initially set for 2 pass 2 3 A Vol 2 Setup 3 The display continues to cycle through this sequence until there is a full cycle with no changes The BASIC I O AD then stores all values in EEPROM for automatic use following the next power cycle The unit is now in the operational mode and the sequential display cycle becomes U0 00 U1 40 U2 80 08 H012 L3 P2 Address Setup Via Network Variable mode only Each function address including the master control address of the BASIC I O AD can be set individually by issuing a special instruction to the current master control address of that chassis This set variable address instruction should be used with caution as it will change the unit address and save them in EEPROM Consult the BASIC I O AD protocol manual for details In the event that the new addresses become lost they will appear on the sequential display The pushbutton method can always be used to return to the offset mode Communication Verification Most startup problems are related to the communications link The left network traffic LED marked RECV Blinks when there is serial data traffic being sent to this BASIC I O
37. ate divided by 100 Basic I Os are shipped at 9600 baud the sequential display indicates H096 Changing the BASIC I O AD baud rate is explained beginning on page 3 4 Protocol Handshake Types Two protocol handshake types are available 2 pass and 4 pass 2 Pass The host transmits an instruction to a BASIC I O AD If the instruction is correctly received i e valid address instruction type and correct checksum the BASIC I O AD executes the instruction and returns the letter A and a cr or where data is to be returned the letter A then the data followed by a two character checksum ending with a CR 4 Pass The host transmits an instruction to a BASIC I O AD If the instruction is correctly received i e valid address but not necessarily the correct instruction type nor checksum the BASIC I O AD returns an A followed by the Echo of the instruction and does not execute it If the host then transmits an E the instruction is executed in the same manner as the 2 pass If the Hos transmits any other character to any unit on the network the instruction is disregarded The sequential display indicates the letter P followed by 2 or 4 BASIC I O ADs are shipped in 2 pass mode the sequential display indicates P2 The actual setting of the handshake protocol type is detailed following network type switch Network Type Switch The digit after the I ion the sequential display represents how the network switch is set No
38. ber of channels n Analog Input Data Analog L Time for n channels t analog Input 1000 150 40 n Baud Rate 0 006 Analog Output Execution Analog S Time for n channels t analog output 1000 110 30 n Baud Rate 0 017 For determining the throughput for systems with a mixture of analog and digital data inputs and the execution of analog and digital outputs it is necessary to determine the time for each instruction using these equations The sum of these t In milliseconds is the time required to provide the service required by all instructions tt digital Input t digital Output t analog Input t analog Output Dividing this sum into 1000 milliseconds yields the number of cycles per second Complete cycles Sec 1000 t 1 7 Vol 1 The Basic I O 1 COMMUNICATION PROTOCOL The BASIC I O Communication Protocol is 100 compatible with the Opto 22 Optomux protocol This ASCII printable serial protocol uses a speak only when spoken to format where only the host can initiate an information exchange Each BASIC I O unit installed in a network has a unique address This address is embedded in the instruction generated by the host computer Every BASIC I O chassis receives the instruction but only the unit which is set to the address found in that instruction will respond Every string of data whose length is greater than one character is followed by a checksum to ensure data integrity This protocol also pr
39. control functions without the host Local control functions LCFs can insure the continued safe operation of closed loop control should the host of its communication link fail In addition LCFs can substantially reduce Host computational load or communications traffic Once characterized Local Control Function blocks enable the BASIC I O AD to perform control tasks without the constant involvement of the host computer After configuration and activation via the host instructions LCFs take data from their input ports perform computations and send the results to their outputs where they may drive output modules or other BASIC I O AD internal functions Utilizing the LCF s to perform simple logic tasks such as analog comparisons summations differences sequence generating or state machine operations eliminates the need for programmable controllers or special purpose circuitry This capability allows a more effective use of the host computer and its communication link because the LCFs handle the operation of the designated control function In the meantime the host is only required to monitor over all system status and generate the system displays and reports This is particularly valuable for systems using modems for communications 1 6 Vol 2 Introduction 1 Specifications Network Communications duTec supports two standards for transmitting serialized I O data between the host computer and the BASIC I O ADs at baud rates to 38 400 Ma
40. dulec BASIC 1 0 J Ara Innovative I O Since 1977 dulec Basic I O Product Family NOTICE This document contains two separate users manuals The first section should be used for the BIO4 BIOS and BIO16 products The second section should be used for the BIO4AD BIO8AD and the BIO16AD products If you find that you have any questions with the setup or installation of any duTec product please feel free to call us Phone 800 248 1632 or E mail info dutec net July 2004 First Revision dulec BASIC I O Hardware Users M anu al d lec 6979 Wales Road Phone 419 666 4700 E Mail info dutec net Toll Free 800 248 1632 Northwood Ohio 43619 Fax 419 666 4702 http www dutec net Vol 1 Table of Contents The Basic VO ci eU Tbe med k t bad eb Eis 1 1 ANAL OG INPUTS zeds xr rmm oda sie oad Ci SL gy s Pid 1 2 DIGITAL INPUTS oll ED Vx D MERDA IV EY da ES 1 4 DIGITAL OUTPUTS 4 23 vem hp vorlesen ules is uem or vul du 1 5 SYSTEM THROUGHPUT ge y css s du a Ce da T a 1 6 COMMUNICATION PROTOCOL sseeeee eh 1 8 Available I O Modules 0 0 cc ccc cect Ih 1 9 DIAGNOSTICS i5 x gad ties dts Sad ver daw ds sede dis 1 10 PHYSICAL CHARACTERISTICS da 1 10 PRODUCE TEST ss ss Cee bed LEY ties iedos ES 1 11 Wattantys varcsttis Shas aia ERAI RIED uut Visa 1 11 MOUNTING ria aoda Sebo e sds bbe halt eid IV IUe ant
41. e Pe Hus Re e Rp ARS 1 9 MOUNTING 4 Aena E eB RES UE A SALE BROT ee ERES 2 1 M ltidrop uos A ule mee Y MESE ENT a A 2 4 2 7 2 16 NetWork ist eo oie dd salu ira KS os ie Aa UU EA SE i ERU EIE Eur 2 9 2 12 Network bias resistOrs oriori cee teen en eee rr 2 8 Network Debugging cee ce ee eg eek RR AE Se Oe ee Ee 2 18 Network termination resistor 2 0 ee cee nent ete e ene nee 2 16 Network type switches 2 10 2 11 2 12 IOCIS 2 8 POWefi i exe AER US ERAI FATE US Vo T Ande s Age RI ER MI ERAI Eden 2 2 Power Requirements 2 0 0 ccc ccc hh hn 1 10 PRODUCT TEST 2 212 iei eem so RSs see eles wea T NERA NES UNAM EY ES ns 1 11 PROTOCOL 2 o esi A sr tS d P e VG Vae SN A T 1 8 2 15 Repeat ra re An RU E E AGRO CAIRO EATEN AH ATI VOUS URS ee ee Tel 2 4 Repeater sauer A qd DUO S VR UN URS URN UT 2 7 2 16 RS 422 eec a ake SRS UO be rated e nee a S dus A ORDERS 2 5 2 9 RS 2422 e os t Uo Pre MESA aet P EDS a ote ass edd HR 2 10 ROA os rias ARSCH PALES AMIS DER ORE UIDERI SATUS 2 5 2 6 2 11 2 12 Sample r tes iii 4 ee ue e ele i ano UH Hie Gale e Red s IS tons 1 2 Serial communications aaa 2 5 SYSTEM THROUGHPUT iii ii ber A ese tla aes bag str Bos 1 6 Temperature orae crass sew Sep eh a emet Ae Te PE aaa ERO e Ea BAT 1 2 1 9 Ur DT cL 2 18 Thermocouple iesist sauss aties ee RE E e e des E eni teg es 1 2 1 9 TRROUGEBDBUT 2 regm Tc eee et HC e AE IS rhe dle en 1 6 July 2004 First Revision ulec BASIC I O A
42. ected to suit most applications A detailed analysis of transmission line effects reflections which is beyond the scope of this document would be necessary to select the ideal termination resistor for any given application If the customer wishes to terminate the communication bus externally at the terminal block location then it is imperative that no BASIC I O network switches be set to L3 EIA standards dictate that the total bus impedance for RS 485 can be no less than 60 Ohms 2 16 Vol 1 Setup amp Installation 2 Setup via Pushbutton The pushbutton located on the logic board see figure 2 9 is used to configure the unit address baudrate and network pass type During the diagnostic test period following the application of power the sequential display shows GO GO GO GO GO Pumping the pushbutton once while the appears places the unit in the setup mode The BASIC I O then flashes U100 H096 P2 The underlined values represent setup parameters that can be changed The digit following the U represents whether the unit is analog digital where 1 indicates digital and 2 indicates analog The initial configuration is default 1 or digital The next two digits indicate the unit address initially set to address 00h The three digits after H is the baudrate divided by 100 initially set for 9600 baud The 1 digit after P is the handshake protocol type initially set for 2 pass The value of each setup character can be ch
43. edes 2 18 Digital Outputs id ct DOO EE pre celi NIE Ad 2 19 Chassis Setup nete em kazaki EAE ARA ex dp CE RA edu ius 2 1 Setup pushbutton usse A ase eoe Rx A inen 3 1 Sequential display eec ee Rete ete Ros ede n KS 3 1 Baud rate sees ose Sho esp the eave rete Rep e ac PI T ede eae ace 3 3 Protocol Handshake Types aaa 3 3 Changing Setup Parameters aaa 3 4 Communication Verification 2 0 0 0 aaa 3 5 Introduction 1 Overview BASIC I O ADs are a family of small industrial grade remote data acquisition and control systems which exchange data with a Host computer via a serial communications link Controlled by a wide range of software running on a Host computer BASIC I O ADs are located near the sensors and actuators The serial link eliminates the need for expensive and noise prone signal wiring between field sensors and actuators and a central control room In applications such as remote process monitoring factory automation and energy management a variety of signals must be transmitter over long distances Instead of requiring expensive multi conductor sensor wiring for each signal cabling costs can be reduced significantly by using BASIC I O ADs and a single communications circuit One of the most useful features of the BASIC I O AD is that in addition to gathering raw data it can be instructed to perform many ranging and statistical operations upon the data before it is given to the host thus allowing the h
44. es only one differential pair The single pair of conductors is used bidirectionally and handles both transmit and receive signals In order for this to be possible the transmitter for each device on this type of network must be enabled and disabled whenever a message is to be sent The transmitter for the BASIC I O AD is designed to handle this control automatically the transmitter control for most popular RS 485 cards that are installed in the Host computer must be controlled by the user program This control is not straight forward and may impact the overall system throughput with inherent delay periods The following is a typical instruction response transaction between a host computer and a BASIC I O AD using RS 485 1 The Host computer enables its RS 485 transmitter usually via the RTS line 2 The Host then sends an instruction to the BASIC I O AD in the form of an ASCII printable string 3 Once the Host determines that the string has been completely sent the RS 485 transmitter is disabled 4 Every BASIC I O AD on the network receives the instruction and begin to decode it That particular BASIC I O AD addressed begins to construct a response 5 Once the carriage return is of the instruction is received then begins to transmit a response 6 The Host receives the response and takes the appropriate action 2 5 Vol 2 Installation 2 This interaction is heavily dependant on asynchronous timing Usually the Host software has n
45. f the addressed unit returns an A acknowledgment the communications link is operational and the selected address is correctly configured A addresses on the network should be tested by the same means If the A acknowledgment is not returned the behavior of the two network traffic displays should be investigated The left LED RECV should blink on every BASIC I O when the host transmits an instruction This should occur regardless of baud rate If there is no indication of network traffic the failure can be anywhere from the host s hardware of software to the BASIC I O Generally the failure of the receive light to blink when the host transmits can be attributed to faulty communications wiring Locating the cause of the failure should start from the host The right LED marked TRANS blinks only when the addressed BASIC I O responds to a host instruction If the Trans LED blinks but the host does not receive an A acknowledgment the return circuit is suspect If an instruction is sent to the BASIC I O and the RECV LED flashes but the TRANS LED does not flash in response first verify that the Baud rate and Unit address are correct If both are correct disconnect the wires attached to the TO PRIOR and terminals And resend the command If the BASIC I O Trans LED still does not flash in response to a host request contact duTec for service If the BASIC I O Trans LED does flash in response to a host instruction the return circuit
46. from the BASIC I O to the host should be verified If this test is not successful the host s receiving hardware should be tested 2 18 Vol 1 Setup amp Installation 2 Hardware error codes When the BASIC I O is initially powered up it goes through an internal self test If any of the self diagnostics fail the unit will report an appropriate error code on the sequential display and halt Error Code 3 If a solid 3 appears in the sequential display recycle power without touching the pushbutton This does not mean that there is a problem it means it is in factory test mode Recycle power without holding down the pushbutton Other error codes If 0 1 2 4 6 or 7 appear on the display permanently there is a problem Recycle power If that does not resolve the error condition please call duTec at 800 248 1632 Hardware watchdog The hardware watchdog acts automatically in the event of a hardware or firmware failure and responds within one second The hardware watchdog turns all outputs off and resets the BASIC I O Do not confuse this with the programmable communication watchdog delay instruction Fuses A plug in 5 amp UL rated fuse is installed between the minus field ierminal and the I O module These fuses are generally only needed to protect output modules Optional fuse values are available for special output protection requirements Fuses are installed in sockets located on the module board next to the module Thermocou
47. gt 500 Ohms Min lt T Ov10 2k Ohms Min VS 02 A Rt 275 Ohms OV5 Ov10 01420 01420 Current Current Voltage Self Ext Figure 2 13 Analog Voltage and Current Output Wiring 2 22 Vol 1 Setup amp Installation 2 Digital Inputs Modules should never be installed while power is applied to the BASIC I O With the exception of IDCSS digital input modules input sensing current comes from a source external to the BASIC I O IDCSS input modules provide their own current for sensing contact closures They can be DESTROY ED if an external source is used The IDC5 and IDC5D input modules are polarity sensitive and operate only when the terminal is more positive with respect to the terminal Polarity does not affect the performance of the IAC5 IACSA or the IDCSS input modules Because the field side of input modules are totally isolated from each other like polarities can be wired common to make use of a single power supply The wiring and operation of digital input modules can be verified by closing the individual input sensing contacts and observing the changes on the module status indicators They are on when the module circuit is energized Their wiring can also be verified at the host by issuing a configure as input instruction setup H followed by a read all modules instruction digital M See software protocol manual or quick reference card for instruction details d H O
48. her character to any unit on the network the instruction is disregarded The sequential display indicates the letter P followed by 2 or 4 BASIC I Os are shipped in 2 pass mode the sequential display indicates P2 The actual setting of the handshake protocol type is detailed following network type switch 2 15 Vol 1 Setup amp Installation 2 Network Type Switch Based upon the selected network configuration each BASIC I O must be setup before communications can begin This is done with the network switches shown below The three basic communication connections for individual BASIC I Os are L1 Repeater Used in RS 422 networks to extend range to5000 feet between units L2 Multidrop Used in RS 422 or RS 485 networks Provides a total network range of 5000 feet L3 Last Unit Must be used in RS 422 and RS 485 networks for the unit most distant from the host If there is only one BASIC I O in a network it is designated L3 For the network layout the sequential display indicates the letter L followed by 1 2 or 3 As shipped BASIC I Os are setup as 13 Last Unit This parameter is not changed by push button but is displayed as 11 L2 or L3 after the dip switches have been set and the unit has undergone a power cycle When the unit is configured for L3 a network termination resistor is placed across the differential receiver A value of 150 Ohms was sel
49. ich is isolated from the signals including signal ground and connected to earth or chassis ground at one location The most common cause of difficulty experienced by customers in the field is improperly installed communications wiring RS 422 Advantages Easier to implement in software since host driver need not be controlled Can be either Multidrop or Repeat No turn around delay required Disadvantages Requires five conductor wire instead of three RS 485 Advantages Needs only 3 wire conductor Disadvantages Host 485 driver control must be implemented requiring tricky serial port manipulations Can only be Multidrop Usually requires turn around delay implementation 2 5 Vol 1 Setup amp Installation 2 RS 485 Programming The BASIC I O will work equally well when connected to either RS 422 or RS 485 However special host programming considerations may be necessary when implementing an RS 485 network Unlike RS 422 where both the transmit and Receive signals have their own differential pair of conductors RS 485 utilizes only one differential pair The single pair of conductors is used bidirectionally and handles both transmit and receive signals In order for this to be possible the transmitter for each device on this type of network must be enabled and disabled whenever a message is to be sent The transmitter for the BASIC I O is designed to handle this control automatically However the transmitter control for most p
50. ise and equal ground potentials everywhere the ground connection is not required However omitting this signal ground in industrial applications can lead to costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30AWG An alternate means for network connection is to use the 10 pin male connector located behind the clamp terminal block This connector mates with Molex shell number 50 57 9005 and uses pins number 16 02 0103 In addition to the Host To BASIC I O wiring the installer should confirm that the network type switches are set in the correct position Multidrop Repeater or Last Unit NOTE The number of BASIC I Os that can be networked in a multidrop configuration before a signal amplifier An external repeater is needed depends greatly on external factors Repeater networks are unlimited 2 12 Vol 1 Setup amp Installation 2 BASIC I O setup BASIC I O setup is accomplished with a sequential display and pushbutton Below is a diagram of the location of these components RS 422 485 CONNECTION SEQUENTIAL DISPLAY POWER CONNECTION 7 X C TN e 5V GND 0 E Y I G 1 POWER FUSE a FR R 9 a FR 5 AMP POWER INDICATOR DIN OX IXSN lt SETUP PUSH BUTTON zo NETWORK CONFIG ME pa SWITCHES
51. its various process inputs Similarly the software in the Host computer makes control decisions and transmits instructions to the BASIC I O which in turn makes the proper changes to its various outputs Both the Host and its communications link are essential elements in this data acquisition and process control scheme Software for use with the BASIC I O system can be obtained from a variety of sources Nearly every third party SCADA software vendor has developed a driver which is compatible with this system In addition the communication protocol employed by the BASIC I O product is a published ASCII printable standard This makes developing your own software a simple matter duTec also offers a software solution called EASY I O With this package custom QuickBASIC source code is generated to fit the signals generated to fit the signals located on the BASIC I O Once configured a simple data acquisition program is automatically generated This sample can then be altered to fit the particular needs of the user 1 1 Vol 1 The Basic I O 1 A notable feature of the BASIC I O is its ability to gather data and perform ranging and statistical operations on raw data before it is sent to the Host The Host can thus spend less time manipulating data and more time gathering it The following sections discuss the different signals the BASIC I O can handle ANALOG INPUTS duTec analog input modules are 100 isolated and accept a wide range of voltages
52. lable to measure Millivolts DC to hundreds of volts AC Milliamps DC to amps AC Frequency to tens of Khz Temperature with all popular thermocouples and restive temperature devices A full range of industry standard digital modules are available for AC DC and dry contact inputs and outputs to hundreds of volts Thermocouple modules provide a cold reference junction compensation BASIC I O AD instructions provide linearized thermocouple and RTD sensor data Engineering unit conversions are handled at the host lever Diagnostics To confirm internal operations and communications link integrity a set of built in diagnostics test key system functions each time power is applied Diagnostics reduce both installation debugging and operation troubleshooting A hardware watchdog timer insures safe shutdown in the event of processor or software failures by turning all outputs OFF Normally ON modules are available for those loads that must remain ON Communications watchdogs The BASIC I O AD can be instructed to implement alarm and fail safe states in the event ofa communication failure Easy setup The BASIC I O AD uses a pushbutton and an on board LED indicator to configure the unit address analog VS digital map and baud rate 1 2 Vol 2 Introduction 1 Protocol Compatibility The BASIC I O AD instruction set core complies 100 with that of the OPTO 22 Optomux TM With this ASCII character speak only when spoken to protocol
53. m internal operations and communications link integrity a set of built in diagnostics test key system functions each time power is applied Diagnostics reduce both installation debugging and operation troubleshooting A hardware watchdog timer insures safe shutdown in the event of processor or software failures by turning all outputs OFF Normally ON modules are available for those loads that must remain ON PHYSICAL CHARACTERISTICS Power Requirements Voltage 5 0 5 4V dc Current 250mA 25mA Per digital module Note that the current draw of some specialized digital modules Such as the IDC5S or the ODC3R can be substantially larger Than 25m4A Consult the specific module data sheet for this Value when sizing power supplies Operating Temp 0 C to 60 C Contact factory for other operating temp Ranges Humidity 95 non condensing Weight 22 oz Max BIO16 Not including modules o B UPC PTC 5 le 2 v 7 E x call l l l l p l l sos l gt diles MN Os oe es a S l Pee olla esso 1 09 i T pl LI Ll LI BASIC I Os are ready to install only de power communication and sensor or actuator wiring is required 1 10 Vol 1 The Basic I O 1 PRODUCT TEST Every BASIC I O is burned in at 70 C while operating in a network for a period of 24 hours prior to shipment Every analog I O module is operated and tested while it
54. m wide basis increasing the delay before changing state up to 46 6 hours Re triggering is available Can generate square waves with programmable On and Off periods On and Off periods have a base range from 0 01 seconds to 10 9 minutes Resolution can be reduced by a factor of 1 256 on a system wide basis increasing duration to 46 6 hours 1 5 Vol 1 The Basic I O 1 SYSTEM THROUGHPUT Input data throughput is the time from beginning of the first character of an input instruction to the end of the last character of the response The processing time of the Host computer will affect the effective throughput Output Execution throughput is the time from the beginning of the first character of an instruction until the actual output changes Because the instruction acknowledgment occurs before the outputs actually change state the processing time of the host computer controlling output instructions can reduce the effective throughput This is even possible at 38 400 baud to instruct the BASIC I O to turn a digital output on and then immediately instruct it to turn back off so quickly that the module never actually gets activated Tables below show milliseconds per channel and channels per second for 1 and 16 I O channel cases THROUGHPUT TABLES Input Digital M Output Digital J Channel 16 Channels Channel 16 Channels sj 6 He A a Chan 16 Ch Chan Sec 16 Ch 300 501 32 379 3 379 42 600 251 4 251 64 195 5 195 82
55. o o o o M M M M M M Prior Next Prior Next Prior Next Basic I O Basic 1 0 Basic 1 0 REPEAT NETWORK Drives load less than 5000 feet between Basic I Os E 1 ra I 1 o FROM TF TF TF TF TF TF OR OR OR OR OR OR o o o o o o M M M M M M prior Nexi Prior Next Prior Ne Basic 1 0 Basic VO Basic 1 0 Figure 2 3 Multidrop V S Repeat networks Multidrop Multidrop networks can be up to 5000 ft long end to end Each station is passively located on the network and represents one Drop or load to the host communication driver A multidrop network will tolerate loss of power to any one station without effecting the rest of the network RS 485 can only be multidrop Repeat Signal boost may be necessary depending on line conditions and number of drops Repeat networks can be as long as 5000 ft between each unit Each station plays an active role in communications to other units If power is removed from a unit in a repeat network communications to units downstream from it will be lost as well 2 4 Vol 1 Setup amp Installation 2 The serial communications link between a Host computer and a network of BASIC I Os is made up of either a single RS 485 half duplex or Dual RS 422 full duplex shielded twisted pair s of wires whose shields are connected to a signal common conductor This communications link should in turn have an overall shield wh
56. o real means of determining that the instruction has been completely sent This means that the program must calculate the approximate time necessary to transmit the entire instruction before the RS 485 driver is disabled Since the BASIC I O AD can respond very quickly to the instruction the Host must disable the driver as soon as possible in order to receive the BASIC I O ADs response RS 485 communications can be tricky at best and should be seriously considered before being adopted Third party software users should make sure that the package they have chosen supports the particular RS 485 communications card to be used Communication Wiring The Host to first BASIC I O AD can be RS 422 or RS 485 Most Host computers come equipped with an RS 232 serial port A choice must be made to either equip the host with an RS 422 or RS 485 card or to use an external RS 232 to RS 422 485 converter such as the duTec BaudMASTER For ranges less than 5000 feet both RS 422 and RS 485 networks can operate in multidrop mode For ranges greater than 5000 feet RS 422 NOT RS 485 networks can operate in repeater mode In this mode the distance between individual units can be up to 5000 feet The trade off for using the repeat mode is that the powering down of any single unit disables communications with all units further downstream from the host A network of BASIC I O AD must be made up of units which are configured as either all multidrop or all repeat
57. og output modules beginning with the next available module position If none are used skip this step 3 Repeat step 2 for the digital input and digital output modules 2 14 Vol 2 Installation 2 Module Wiring Analog Inputs Modules should NEVER Be installed or removed while power is applied to the BASIC I O AD Following insertion in their respective sockets modules should be secured with the captive screw Note Analog Modules Normally Run hot to the touch Correct polarity connections are essential to proper operation of all the analog inputs Connections to terminals marked with a must be more positive than the terminals marked with a Thermocouples and RTDs are connected directly to modules with special connectors which insure correct polarity Analog input module status indicators are On dimly when input modules are installed wired correctly and their input signal is within the module s valid range If these conditions are not met the in the touchght may be on brightly off or may flicker Figure 2 11 figure 2 12 and figure 2 13 show the wiring for various types of analog inputs With the exception of thermocouples and RTD modules connections are made via the black terminal strip In the case of thermocouples and RTDs mating connectors are included There must be nothing connected to the screw terminals corresponding to these module positions The source of analog input voltage or current is external to the BASIC
58. opular RS 485 cards that are installed in the Host computer must be controlled by the user program This control is not straight forward and may impact the overall system throughput with inherent delay periods The following is a typical instruction response transaction between a host computer and a BASIC I O using RS 485 1 The Host computer enables its RS 485 transmitter usually via the RTS line 2 The Host then sends an instruction to the BASIC I O in the form of an ASCII printable string 3 Once the Host determines that the string has been completely sent the RS 485 transmitter is disabled 4 Every BASIC I O on the network receives the instruction and begin to decode it That particular BASIC I O addressed begins to construct a response 5 Once the carriage return is of the instruction is received the BASIC I O begins to transmit a response 6 The Host receives the response and takes the appropriate action This interaction is heavily dependant on asynchronous timing Usually the Host software has no real means of determining that the instruction has been completely sent This means that the program must calculate the 2 6 Vol 1 Setup amp Installation 2 approximate time necessary to transmit the entire instruction before the RS 485 driver is disabled Since the BASIC I O can respond very quickly to the instruction the Host must disable the driver as soon as possible in order to receive the BASIC I Os response RS 485
59. ost to BASIC I O AD wiring the installer should confirm that the network type switches are set in their correct position Multidrop Repeater or Last unit 2 11 Vol 2 Installation 2 BASIC I O AD TO BASIC I O AD RS 422 FROM PRIOR BASIC VO OR HOST G cp xw GND 3 EC a eo c b Emi Fa y Pms v a 78 s LF Al LL 2 Qs SMB p c cp 5 GND a eo m Li E EI ES Ala Te d era F8 m s JAX me R x E TO NEXT OR LAST dal as jw SMBxx cp SET DIP SWITCHES TO THE DESIRED RS 422 COMMUNICATION MODE MULTIDROP OR REPEAT MULTIDROP SHOWN Figure 2 6 RS 422 BASIC I O AD To BASIC I O AD Figure 2 6 shows one individually shielded twisted pair of AWG 24 Each pair has a drain wire connected to its shield These drain wires are then connected to the signal grounds at each unit A separate shield encases the entire cable The drain wire for the over all shield is tied to earth ground at one end An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required Omitting this signal ground in industrial applications can lead to unstable operation and costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of
60. ost to spend less time manipulating data and more time gathering it Also the BASIC I O AD is able to spend more time exposed to the data which in turn allows it to base its responses to the host on more samples of data The BASIC I O AD may also be directed to manipulate outputs in specific ways to produce delayed or repetitive effects Capacity Each BASIC I O AD system consists of one logic board connected to a 4 8 or 16 position I O module mounting rack This combination is then field configurable to accept either analog or digital electrically isolated input or output modules which can interface to a wide variety of sensors and actuators BASIC I O AD networks can service over 4000 analog and or digital I O lines in various combinations Product Test Every BASIC I O AD is burned in at 70 C while operating in a network for a period of 24 hours prior to shipment Every analog I O module is operated and tested while it s ambient operating temperature is cycled over the specified operating range of 0 C to 60 C for a period of 24 hours A computer record is generated for every analog I O module 1 1 Vol 2 Introduction 1 VO signal compatibility BASIC I O ADs use duTec I O modules to match signal requirements exactly With a direct interface to sensors no external signal conditioning is required Furthermore all duTec modules feature total electrical isolation both module to logic and module to module Analog modules are avai
61. ote Analog modules run hot to the touch Both voltage and current output modules provide their own isolated power output This eliminates the need for external power supplies and insures electrical isolation between each output This also makes it possible to wire voltage outputs in series to obtain larger voltage swings The wiring of analog output modules can be verified by the host issuing a configure as outputs instruction Setup 1 followed by a set output level analog J instruction See software protocol manual or Quick reference card for instruction details Module status indicators for analog outputs blink briefly as outputs are updated It should be noted that the status indicator only follows the logic instruction to the modules and does not show that the module or its fuse is present Outputs can only be verified by observing the output device or by a multimeter or oscilloscope measurement O1420 analog output modules provide the current into loops with total resistance less than 275 ohms If the loop resistance exceeds 275 ohms an external power supply must be added to the loop as shown in figure 2 13 correct polarity is essential The added voltage should be a nominal 1 volt for each added 50 ohms of loop resistance in excess of 275 Ohms The total added voltage can be up to 5 volts larger than the nominal calculation without damage The voltage regulation of the added supply can be as poor as 10 without affecting accuracy Ov5
62. ovides an instruction verification mode for further data transmission reliability As a result of the specific nature of the BASIC I O communications protocol the RS 422 or RS 485 network can be shared with other devices whose protocol is similar A knowledge of serial communications hexadecimal to decimal conversion and string data manipulation is required to compose custom user generated Host software DuTec s EASY I O software is designed to minimize these obstacles 1 8 Vol 1 The Basic I O 1 Available I O Modules ANALOG INPUTS 12 BIT ANALOG OUTPUTS 12 BIT Frequenc Voltage IIF10K B Input 300Hz 10KHz Output 0 1V self sourcing IF2 5K L Input 0 2 5KHz Output 0 5V self sourcing IFSK 1 Input 0 5KHz OVIO Output 0 10V self sourcing IFIOK L Input 0 10KHz o LLL Volage Current EE IV25M Input 0 25mV 01420 Output 4 20mA self sourcing To 275 Ohm load VSOM flnput0 50m VT VIOOM input O 100mV ooo o Ivi input IV YD DIGITAL INPUTS HVS fmptosv ac DC TV10B Input Bipolar 10V IVAC Input 28 140 Vac DD Tnput 3 32 Vde Fast gt 500Hz IVAC A Input 56 280Vac IDCSS Input Dry Contact Sense Built in Isolated Voltage Source Curen JIDCS5NP Input 10 32 Vdc 15 32Vac Non Polarized ip POAT ira 47237781 ACS Input 0 5Aac Joc o ee e aM Thermocouple DIGITAL OUTPUTS TCE ype E 0 To 435 C AC ype J0 To 700 C OACS ype J 80 To 750 C OACSA ype
63. ples and RTD inputs do not utilize ther terminal block and therefore do not make use of the fuse Sensor Actuator I O wiring Analog or digital modules can be placed at any module position However it is good practice for noise pickup debugging and maintenance reasons to group and wire similar module types together For minimum crosstalk between input and output wiring input modules should be located at one end followed by output modules Modules should NEVER Be installed or removed while power is applied to the BASIC I O Following insertion in their respective sockets modules should be secured with the captive screw 2 19 Vol 1 Setup amp Installation 2 Analog Inputs Note analog modules normally run hot to the touch Correct polarity connections are essential to proper operation of all the analog inputs Connections to terminals marked with a must be more positive than the terminals marked with a Thermocouples and RTDs are connected directly to modules with special connectors which insure correct polarity Analog input module status indicators are On dimly when input modules are installed wired correctly and their input signal is within the module s valid range If these conditions are not met the indicator light may be on brightly off or may flicker The wiring and operation of analog input modules can be verified by the host issuing a Configure as Input instruction setup H followed by a read input value instruction
64. power for ODC5 ODC5A OACS and OACSA digital output modules comes from a source external to the BASIC I O AD Because they contain a protective reverse diode the ODC5 and ODCSA output modules are polarity sensitive and operate correctly only when the terminal is positive with respect to the terminal A DC digital output module connected backwards conducts current through its protective diode and therefore cannot be controlled Polarity does not affect the performance of the OACS and OACSA Digital output modules Because the field sides of output modules are totally isolated from each other like polarities can be wired common to make use of a single power supply The module status indicator should follow the instruction It should be noted that the status indicator only follows the logic instruction to the modules and does not show that the module its fuse or that external power is present Outputs can only be verified by observing the device or by a multimeter or oscilloscope measurement CURRENT LOAD Figure 2 16 Digital output wiring 2 19 Vol 2 Setup 3 Chassis Setup LOCAL RS 232 PORT m SEQUENTIAL DISPLAY X 2901 I O MODULE STATUS du HOST RS 232 PORT m s NETWORK CONFIG SWITCHES JsoH LAST STATION ID PLEXER seen a JP3 3 RTS CTS JUMPERS N Jp5 ES SET UP PUSHBUTTON MULTI 41234 o ln
65. s the same mounting dimensions and panel space are used for both 17 00 1125 g le a ola KAKAKIKIKAKA N prz PD ly ri E mms aos c OO 90 O d Bo v o 3 a y N qoo dulec y elg ES e BIO4 BIO8 BIO16 UAL 1 TTT m T T r1 109 i pl pl il Ll LI 10 75 1650 FIGURE 2 1 BASIC I O FOOTPRINT 2 1 Vol 1 Setup amp Installation 2 POWER WIRING Power connections are made at the 2 position terminal block located on the module board marked 5V and GND No 8 captive wire clamps accept 10 16 AWG wire or spade lugs 5V GND G G G G G G G G Power wiring conventions of the power source to the 5V terminal of the power source to the terminal marked GND Power requirements Voltage 5 0 5 4Vdc Current 250 mA 25mA per digital module or 250 200mA per analog module Note that the current draw of some specialized digital modules such as the IDCSS or the IDC5Z can be substantially larger than 25 mA Consult the specific module data sheet for this value when sizing power supplies Practices In general it is good practice to reserve the 5 Vdc power supply exclusively for the task of powering one or more BASIC I O units As with any microprocessor based equipment reasonably clean power is required for reliable operation Sharing power with
66. s ambient operating temperature is cycled over the specified operating range of 0 C to 60 C for a period of 24 hours BASIC I O Models BIO4 4 Position BASIC I O Unit Includes SLB Logic Board and SMB4 Module board less modules and power supply BIO8 8 Position BASIC I O Unit Includes SLB Logic board and SMB8 module board less modules and power supply BIO16 16 Position BASIC I O Unit Includes SLB logic board and SMB16 module board less modules and power supply Warranty duTec warrants its products to be free of defects in materials and workmanship for a period of two 2 years from date of shipment DuTec may at its option repair or replace all materials found to be defective All repair or replacement must be performed by duTec personnel Any parts determined by duTec to be defective as a result of abuse attempts to repair or misuse by the customer will be repaired at the expense of the customer 1 11 Vol 1 The Basic I O 1 NOTES 1 12 Vol 1 Setup amp Installation 2 MOUNTING BASIC I Os come in 4 8 and 16 channel versions Figure 2 1 below shows the footprint of each BASIC I O Using corner holes the unit can be mounted with 4 6 or 8 round head or pan head screws The BIO16 version has two additional mounting holes located near the center of the board as well Hole locations in relation to the overall dimensions for each are shown below Since the same BASIC I O boards are used for digital or analog application
67. shipment date DuTec Inc at its option will repair or replace all material found to be defective All repair or replacement must be performed by duTec Inc personnel Any parts determined by duTec Inc To be defective as the result of abuse attempts to repair or misuse will be repaired at the expense of the customer DuTec Inc will not be liable for any consequential incidental or special damages Vol2 Table of Contents OVEIVIEW ts etna ue Be Mee Cr de SAMS S AA 1 1 Capacity cre waren aztec e tp e RU SS e EROR ee PARES es EE 1 1 I O signal compatibility 2 0 0 cc III 1 2 Diagnostics 2 pesce o Be AU A RATES CRT arene GA See Es 1 2 Communications watchdogs aaa 1 2 Easy SUPL Scho Sue ii ente rr den Rott ie e RD e daw Bee NE UR 1 2 Protocol Compatibility llsseseeeeeee teen eens 1 3 Available I O functionality 0 0 kc n 1 4 Analog Input Functions aaa 1 4 Analog outputs ecl oie oe els da tne re diee she pap ela ass e e Te E hele ees 1 4 Digitalanputs usua ain Gan a Beene AIRES CRI n RA UR eee Es 1 5 Digital outputs siren ee oae A nee emer reel RI es enn 1 5 Extended capabilities 22er eR eR RR RES IRE RE Os 1 6 Specifications zip eee ERR E RESET ORI ATHE I VAN AUS SAU AE ue 1 7 Communications uem eb ene IA DATI eC T Ie e RR 1 7 ROWER cud rs WU nw setate ete rtu AS ebore das ees ri vom e 1 7 Environment ons eee Me nct retis en Re a i PP Ae Ad ete te eae 1 7 Ordering Information
68. st To BASIC I O AD wiring the installer should confirm that the network type switches are set in the correct position Multidrop Repeater or Last Unit 2 10 Vol 2 Installation 2 RS 485 Host to BASIC I O AD RS 485 oh 5V GND E Frou A g Li A V M V V X y a N EF T TO NEXT y VO PLEXER n A SMB P SET DIP SWITCHES TO MULTIDROP 5 485 COMMUNICATIONS IHOWN Figure 2 8 RS 485 To BASIC I O AD Figure 2 8 shows two individually shielded twisted pairs of AWG24 Each pair has a drain wire connected to its shield These drain wires are then connected to the signal grounds at each unit A separate shield encases the entire cable The drain wire for the over all shield is tied to earth ground at one end An example of acceptable wire for this application would be Belden 8162 In a perfect world with no electrical noise and equal ground potentials everywhere the ground connection is not required Omitting this signal ground in industrial applications can lead to unstable operation and costly debugging These connections are made by placing a 1 4 inch stripped wire into the openings of the wire clamp terminal block and tightening the screw This terminal block will accept gauges from 14 to 30 AWGAn alternate means of network connection is to use the ten pin male connector located behind the clamp terminal block In addition to the H
69. te The seven segment display will not reflect a switch position change until power has been cycled to the unit 3 3 Vol 2 Setup 3 Changing Setup Parameters Via Pushbutton During setup the user may need to change the unit address serial link baud rate and protocol pass type The pushbutton located under the removable cover is used to change these parameters The pushbuton causes the ajacent red LED to flash each time it is pushed Any changed values are automatically saved in non volatile EEPROM During the diagnostic test period following the application of power the sequential display shows GoGoGo Flashing the pushbutton LED once when the appears places the unit in setup mode The value of each setup character can be changed as they appear in sequence by pressing the pushbutton The display will continue to cycle through the setup sequence until there is a full cycle with no changes The BASIC I O AD then stores all values in EEPROM for automatic use following each power cycle If desired changes were not implemented correctly line power can be cycled and setup via pushbutton procedure can begin again Once the unit has been placed in setup mode as described above the value of each setup character shown below can be changed U 0000 8H096P2 Only underlined digits may be changed The 2 digits after UO indicate the master unit control address initially set for address 00H 00 Note In the address offset mode only one m
70. ter or oscilloscope measurement CURRENT LOAD ODC5 ODC5A ODC5R Figure 2 15 Digital Output Wiring 2 24 Vol 1 Vol 1 Index AC C MT 2 15 2 17 DEDI RPM cp 2 15 nhu MODI E 1 8 2 17 Addresses v o sive o eer re Pee Hour Hee Bae Pei S 2 14 ANALOG INPUTS ra ret HAIR a He e SP ARIA TEUER erige 1 2 1 9 2 20 ANALOG OUTPUTS B Sn ii ex AER Y 1 3 1 9 2 22 Analog Digital sast gad ss ats eer beer ce RR er IUE aed ean Ets 2 14 Analog digital i 2d ome AAA A eer t lace Saale ap us mt i 2 17 BASIGT O MOdel8 isere a ces DUCES ROS CHIESE An ORE OA EN AS UA d 1 11 Ba d rate SA ne og hes ANO ERA AA RS RIS d 2 14 Baudrate 4 ah bn ee eee a tn eee ee cles ten re ee as 2 17 COMMUNICATION PROTOCOL aaa 1 8 Communication verification usasse sessen eee teen teen teens 2 18 Communications protocol 1 1 0 0 0c cece hm 2 3 Data throughput cs 6 sso cate oe hes eee e aie be Sate ee ee es eed 1 6 Debugging oee rintaa r eke ica da re sry de A ts le A ap ak Seth P Pe x 2 18 DIAGNOSTICS usate wo ra us as SiR ats PES ies 5 Ar See RS EIR REUS 1 10 DIGLFATINPUTS 5 ni 4 eee teste end sald os Gls Se os At S 1 4 1 9 Digital Outputs eoi seco ms tes dea e a RU Y ees eee ae a 1 5 1 9 2 24 Error COLES use op ev gate I HO ens rre ee ica rer LS 2 19 Er queticy 5 de een URDU GA Za nea USTEDES AURI ROS Ue DURO ETUR 1 9 USES O mr c 2 19 East Unit 5s pilam ru e epe Rb er RU eo be e E CS de dus 2 16 Modules oe v ete ge Toe HOS P TB
71. ter unit control MC from 00h to 03h will automatically cause MD 43h MA 83h Variable Mode In the variable mode function addresses are independent of each other and can range from 00h to Ffh For this mode each function MC MD and MA must be entered As long as addresses are not duplicated they can take on any of the 256 possibilities The variable mode must be used with some software packages and systems of more than 64 BASIC I O AD network connections The loading of selected function addresses into the BASIC I O AD is explained after the description of analog digital separator baud rates and protocol handshake type Analog Digital separator Each BASIC I O AD will require an analog digital separator to be set This identifies which modules are analog and which are digital This is necessary so that the system can properly direct each instruction to the appropriate module The analog digital separator is the character following the O in the sequential display It should be set equal to he HEX value of the lowest numbered module position containing a digital module input or output If this BASIC I O AD contains only analog modules set this value to G Refer to the worksheet 3 2 Vol 2 Setup 3 Baud Rates Any One of the standard baud rates of 300 600 1200 2400 4800 9600 19200 or 38400 can be used for the serial network communications The sequential display indicates the letter H followed by the baud r
72. than thirty two devices It will be necessary to remove these network bias resistors so as to not exceed the maximum bus loading However in order to retain noise immunity the network bias resistors should remain installed in at least one BASIC I O on the network Figure 2 4 below shows the location of the four network bias resistors R34 is the 1 5k from prior bias resistor R35 is the 1 5k from prior bias resistor R36 is the 1 5k from next bias resistor R37 is the 1 5k from next bias resistor SE AND REMOVE THESE 4 RESISTORS FOR LARGE NETWORKS R37 CH ig 3 E me o H a 8B ti 1 m n 7 lu am g Ead BDOxx A SLB ol Figure 2 4 Network Bias Resistor Locations 2 8 Vol 1 Setup amp Installation 2 RS 422 HOST TO BASIC I O SET DIP SWITCHES TO THE DESIRED RS 422 COMMUNICATION MODE MULTIDROP OR REPEAT MULTIDROP SHOWN HOST PC WITH RS 422 COMM CARD INSTALLED ee fan cp 5V GND TPA AAA AAAA ms 10X 000000000 LL i m1 a p BIB dn i aro m AECINAVNANNINNNINNN T A E CQ a e i T lt 9 FY d 3 To 0 a Ay T BS Gi A gt fi iO A B Wu A IL y Elm y MESH TONEXTVO A PLEXER an SMBxx Y Figure 2 5 RS 422 Host to BASIC I O wiring Figure 2 5 shows two individually shielded twisted pairs of
73. ual on and off times for a total of 2 mSec Would be 500Hz Off to on and on to off transitions can be detected within 1 mSec Of their occurrence Action is only reported every 10mSec Note The response time performance of digital input instructions can be limited by the delay in the input modules themselves which can nave on plus off delays of up to 40 mSec Set Outputs One Shot Delayed Digital outputs Can set individual or multiple outputs on or off Modifiers Can generate on or off pulse durations of up to 655 35 seconds with a resolution of 0 01 seconds Resolution can be further multiplied by a factor of 1 2560n a system wide basis Can generate on or off pulse durations of up to 655 35 seconds with a resolution of 0 01 seconds Resolution can be further multiplied by a factor of 1 2560n a system wide basis 1 5 Vol 2 Introduction 1 Squarewave Can generate squarewaves with programmable On and Off periods On and Off periods have a base range from 0 01 to 2 56 seconds Resolution can be further multiplied by a factor of 1 256 on a system wide basis Re triggering is available Pulse Generator Can generate 1 65 535 50 duty cycle pulses whose equal on and off periods can range from 0 01 to 2 55 Sec Resolution can be further multiplied by a factor of 1 256 On a system wide basis Extended capabilities In addition to operating under the control of a host Option L of the BASIC I O AD has the ability to perform local
74. ximum Distance Serial Link Feet RS 422 485 5 000 1 524 Physical Characteristics Options L Local Control Function LCF Ordering Information Specify duTec products by model number e g BIO4AD 4 Position BASIC I O AD BIO8AD 8 Position BASIC I O AD BIO16AD 16 Position BASIC I O AD Options are specified by a series of suffixes to the model number preceded by a slash for example BIO8AD L 1 7 Vol 2 Introduction 1 Available I O Modules ANALOG INPUTS 12 BIT ANALOG OUTPUTS 12 BIT TFeuxy e J I FIOK B Input 300Hz 10KHz OVI Output 0 1V self sourcing Output 0 10V self sourcing Voltage 01420 Output 4 20mA self sourcing To 275 Ohm load AAN O TVSB nputBipodar 5V EDC TV10B Input Bipolar 10V IDCSS Input Dry Contact Sense Built in Isolated Voltage Source ME pM HUN c E cT Input 10 32 Vdc 15 32Vac Non Polarized pO Current 1 DIGITAL OUTPUTS 1420 nput 4 20mAdc IACS nput 0 5Aac 3 Thermocouple be ee R aj utput 24 280 Vac N C Normally Closed TCE pe E 0 To 435 C utput 20 280Vac 6 0A TCI pe JO To 700 C TCJ 1 pe J 80 To 750 C utput 5 60Vdc 3 54 TCK pe K 100 To 924 C C TCK 1 pe K 110 To 1250 lectro Mechanical 0 5A Relay Form A ormally Sa lt g o U in gt m gt O c ks S N Y zl Oo e ES I e O lt a o gt TCR nput 200mV 0 10KHz Digital TC

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