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Saia-Burgess Controls AG

Manual for PCD2.W745 and PCD3.W745

│

Document 26-796 E

NG06 │ 2018-10-12

Programming

Programming with PCD Classic

3-5

The temperature unit has no influence to voltage / ohm measurement ranges.

FB Exec

Parameter structure:

FB Exec

Parameter

Type

Description

K 1…16

[K] input

Module Number accord. to file D2W745_B.mba

ValueCH0

[R] output Measured value CH0

OverR_0

[F] output

OverRange indicator for input 0

UnderR_0

[F] output

UnderRange indicator for input 0

SnsFail_0

[F] output Sensor fail indicator for input 0

T CH1

[R] output Temperature value input 1 in 1/10 [Unit]

OverR_1

[F] output

OverRange indicator for input 1

UnderR_1

[F] output

UnderRange indicator for input 1

SnsFail_1

[F] output Sensor fail indicator for input 1

T CH2

[R] output Temperature value input 2 in 1/10 [Unit]

OverR_2

[F] output

OverRange indicator for input 2

UnderR_2

[F] output

UnderRange indicator for input 2

SnsFail_2

[F] output Sensor fail indicator for input 2

T CH3

[R] output Temperature value input 3 in 1/10 [Unit]

OverR_3

[F] output

OverRange indicator for input 3

UnderR_3

[F] output

UnderRange indicator for input 3

SnsFail_3

[F] output Sensor fail indicator for input 3

NoResponse

[F] output Module not ready indicator

Temperature value:

Signed Integer, represents the measured value according to the selected input range.

Diagnostic flags:

Overrange / Underrange indicators become active when the measurement value is

outside of the specified range for the chosen sensor type.

Sensor fail indicates errors in sensor connection. For RTDs, shorts and opens can be

detected on both, supply lines and sense lines. For thermocouples, the flag indicates

line break.

No Response

No response from W745. Check if the module is present on the chosen base ad

dress.

FB Status

Parameter structure

FB Status

Parameter Type

Description

K 1...16

[K] input

module Number accord. to file D2W745_B.mba

MeasRun

[F] output High when data acquisition is running

DiagRun

[F] output High when sensor diagnostic is running

ComRun

[F] output

High when communication to W745 ok

Summary of Contents for PCD2.W745

Page 1: ...Document 26 796 Edition ENG06 2018 10 12 Manual PCD2 W745 and PCD3 W745...

Page 2: ...3 Terminals and meaning of LEDs 1 5 1 4 Presentation 1 6 2 Configuration 2 1 Configuration of the module 2 1 2 2 Operating modes 2 2 2 3 Configuration connection examples 2 4 3 Programming 3 1 Program...

Page 3: ...12 08 10 EN04 Appendix A Added chapter 4 Configuration on PCD3 T760 RIO Module 2013 10 10 EN05 New logo and new company name 2018 10 10 ENG06 Chapt A New phone number valid from February 2015 0 2 Bran...

Page 4: ...orts all common measurement techniques For RTDs Two wire sensor connection Three wire sensor connection Four wire sensor connection For Thermocouples Internal cold junction compensation The sensors ar...

Page 5: ...rature values from the module The powerful sensor diagnostics allows to detect wiring errors So the module indi cates when a sensor line is broken or not connected Further over range and under range d...

Page 6: ...pling time per channel 250 ms Measurement resolution 16 bit 50Hz rejection 60Hz rejection 75 dB 60 dB Line break detection Short circuit detection x x Linearization on Board Compensation of cold junct...

Page 7: ...directly connected to the module Built in Temperature sensor Operating temperature range 0 55 C Resolution 0 1 C Measuring error at 25 C 0 8 C Drift over operating Temperature Range 0 55 C 0 05 C C S...

Page 8: ...2 1 0 16 GND Label description Name Description RthX Constant current output for RTD measurement SensX Positive line of the differential voltage input Sense SensX Negative line of the differential vol...

Page 9: ...nector power supply Optocoupler A D converter Analogue circuitry Input filtering EMC Diagnostic LEDs Input clamp terminal Galvanic separated Block diagram 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 16 EMC...

Page 10: ...30 1 10 C 1 10 F 1 10 K RTD Pt100 200 850 C 328 1562 F 73 1123 K 2000 8500 3280 15620 730 11230 1 10 C 1 10 F 1 10 K Pt1000 200 850 C 328 1562 F 73 1123 K 2000 8500 3280 15620 730 11230 1 10 C 1 10 F...

Page 11: ...ent The module supports direct connection of Resistive Temperature Detectors RTDs For this purpose a precision current source supplies the sensors with a measure ment current of 250 A 2 Wire connectio...

Page 12: ...reference junction CJC int Cold Junction Compensation internal In this operating mode the thermocouples are directly connected to the input clamp of the PCDx W745 The module measures the temperature o...

Page 13: ...ection of 75 mV signal sources PCDx W745 RthX SensX SensX GND Voltage source 75 mV 2 3 Configuration connection examples General example for RTD and thermocouple connection Input 3 Sensor TC K Comp CJ...

Page 14: ...ple inputs configured for CJCext In this setup for channel 2 External reference junction CJC ext Isothermal block RTD Pt100 4 wire used to measure the temperature of the isothermal block Input 3 Senso...

Page 15: ...e placed in a cyclic organisation block COB FBox name A name can optionally be given to the FBox When several FBoxes are used FBox must have an individual name in0 in3 Analogue input values Format Uni...

Page 16: ...re unit Selection of temperature unit Celsius Temperature values in 1 10 C Fahrenheit Temperature values in 1 10 F Kelvin Temperature values in 1 10 K Channel 0 to 3 Sensor type Selection of sensor ty...

Page 17: ...0 Pt1000 Ni100 Ni1000 R600 R5000 K J Voltage Remarks When CJCext is configured the temperature of the external reference junc tion is measured using channel 0 Therefore channel 0 can t be configured f...

Page 18: ...output Initialization error indicator WrongConfig F output No or wrong configuration indicator NoCalibration F output Internal module calibration check See table below for predefined configuration cod...

Page 19: ...ut Sensor fail indicator for input 2 T CH3 R output Temperature value input 3 in 1 10 Unit OverR_3 F output OverRange indicator for input 3 UnderR_3 F output UnderRange indicator for input 3 SnsFail_3...

Page 20: ...stallation of the FBs The following 3 files are necessary D2W745_B src D2W745_B equ D2W745_B mba Saia PG5 library files The src and the equ files should be in the Saia PG5 FB library C SBC PG5xxx Libs...

Page 21: ...in the start up OB 100 All access during this phase is forbidden This restriction is valid for the CPUs PCD1 and PCD2 M1x7 The PCD2 M487 allows to have access during the start up Peripheral Bios Ident...

Page 22: ...e not relevant 0 OB82_SUB_MDL_ERR bool User module is wrong or missing OB82_COMM_FAULT bool Communication fault OB82_MDL_STOP bool not relevant 0 OB82_WTCH_DOG_FLT bool not relevant 0 OB82_INT_PS_FLT...

Page 23: ...peripheral range Offset L PEB L PEW PED 0 Status CH0 1 Status CH1 2 Status CH2 3 Status CH3 4 Value CH0 5 6 Value CH1 7 8 Value CH2 9 10 Value CH4 11 Description of the peripheral inputs Value CH0 3 P...

Page 24: ...r range The measured value is over the allowed range of the sen sor The read value in the appropriate PEW CH0 3 is set to 0xFFFF 1 Under range The measured value is under the allowed range of the sens...

Page 25: ...e read L PEB 300 Status byte CH0 T MB 300 save in auxiliary variable Temperature value U M 300 6 New value available SPBN NoRd L PEW 304 Actual value CH0 T MW 304 save in MW NoRd NOP 0 Peripheral defi...

Page 26: ...estistor value 0xFFFF corresp to 640 7 28 Reserved 29 Thermo element Type K 30 Thermo element Type J 31 U_80 display of the voltage value 0x7FFF corresp to 80mV 0x8000 corresp to 80mV Bit 5 7 Measurem...

Page 27: ...bol warns the reader of the risk to components from electrostatic discharges caused by touch Recommendation at least touch the Minus of the system cabinet of PGU connector before coming in contact wit...

Page 28: ...rols AG Manual for PCD2 W745 and PCD3 W745 Document 26 796 ENG06 2018 10 12 Appendix A A 2 Programming examples for PCD Classic systems A 2 Programming examples for Saia PCD Classic systems Saia PG5 p...

Page 29: ...ned BA_1 EQU 96 Base address of module 1 BA_2 EQU 0 Base address of module 2 BA_3 EQU 0 Base address of module 3 BA_4 EQU 0 Base address of module 4 BA_5 EQU 0 Base address of module 5 BA_6 EQU 0 Base...

Page 30: ...file xob16 src XOB 16 Other code in XOB 16 GROUP W745 References the W745 group CFB Init K 1 K Module Number TC_K K Sensor Type CH0 CJCint K Connection CH0 TC_K K Sensor Type CH1 CJCint K Connection C...

Page 31: ...T 0 Set timer 0 to 100ms T 100MS W745 access CFB W745 Status Check W745 Status K 1 K Module Number F 20 F MeasRunning F 21 F DiagRunning F 22 F ComRunning CFB W745 Exec Read Measurement values and dia...

Page 32: ...Saia Burgess Controls AG Manual for PCD2 W745 and PCD3 W745 Document 26 796 ENG06 2018 10 12 Appendix A A 6 Programming examples for xx7 series A 3 Programming examples for xx7 series in preparation...

Page 33: ...following screenshot Channel 0 Channel 1 Channel 2 Channel 3 Signification of each 8 bits from right to left as explained in chapter 3 2 Bit Description 0 Over range The measured value is over the all...

Page 34: ...ten Switzerland Phone 41 26 580 30 00 Fax 41 26 580 34 99 Email support support saia pcd com Supportsite www sbc support com SBC site www saia pcd com International Represetatives SBC Sales Companies...

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