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1794-6.5.4, 8 Input RTD Module User Manual

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1. m M Argentina e Australia e Austria e Bahrain Belgium e Brazil e Bulgaria e Canada Chile e China PRC Colombia Costa Rica Croatia e Cyprus Czech Republic e Denmark e Ecuador Egypt e El Salvador e Finland France Germany e Greece e Guatemala e Honduras e Hong Kong Hungary e Iceland India e Indonesia Ireland e Israel e Italy e Jamaica e Japan e Jordan Korea Kuwait e Lebanon e Malaysia Mexico Netherlands New Zealand e Norway e Pakistan Peru e Philippines Poland Portugal Puerto Rico e Qatar e Romania e Russia CIS e Saudi Arabia e Singapore e Slovakia e Slovenia South Africa Republic e Spain e Sweden e Switzerland e Taiwan Thailand Turkey United Arab Emirates e United Kingdom United States Uruguay Venezuela Yugoslavia Allen Bradley Headquarters 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Publication 1794 6 5 4 January 1996 PN 955119 77 Copyright 1996 Allen Bradley Company Inc Printed in USA
2. Resistance default No sensor connected do not scan 9 0 110 100 ohm Pt 0 00385 Euro 200 to 870 C EXEAT 100 ohm Pt 0 003916 U S 200 to 630 C 200 ohm Pt 0 00385 Euro 200 to 630 C po fi fo t 500 ohm Pt 0 00385 Euro 200 to 630 C op j 10 ohm Copper 200 to 260 C jo 120 ohm Nickel 60 to 250 C A oo fo tt 100 ohm Nickel 60 to 250 C 1 jo 200 ohm Nickel 60 to 250 C A o pe 500 ohm Nickel 60 to 250 C rr qe ees 1101 to 1111 Reserved 04 07 Channel 1 RTD Type see bits 00 09 08 11 Channel 2 RTD Type see bits 00 03 12 18 Channel 3 RTD Type see bits 00 03 Write Word 2 00 03 Channel 4 RTD Type see write word 1 bits 00 03 04 07 Channel 5 RTD Type see write word 1 bits 00 09 2 iii 08 11 Channel 6 RTD Type see write word bits 00 089 2 i 4444 Channel 7 RTD Type see write word 1 bits 00 03 Chapter Summary In this chapter you learned how to configure your module s features and enter your data Publication 1794 6 5 4 Chapter Objectives About DeviceNetManager Software Polled I O Structure Chapter 5 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter In this chapter we tell you about DeviceNetManager software e T O structure e image table mapping factory defaults DeviceNetMan
3. Co T in in in iM no T eo jn A e he op ie N ie N T Table of Contents Module Programming Chapter Objectives Block Transfer Programming Sample programs for Flex 1 0 Analog Modules PLC 3 Programming Figure 3 1 PLC 3 Family Sample Program Structure PLC 5 Programming Figure 3 2 PLC 5 Family Sample Program Structure PLC 2 Programming Chapter Summary Writing Configuration to and Reading Status from Your Module with a Remote I O Adapter Chapter Configuring Your Module Range Selection Input Scaling Enhanced Mode Hardware First Notch Throughput in Normal Mode Throughput in Enhanced Mode Reading Data From Your Module Mapping Data for the Analog Modules RTD Input Module 1794 IR8 Image Table Mapping
4. Allen Bradley 8 Input RTD Module Cat No 1794 IR8 User Manual Important User Information Because of the variety of uses for the products described in this publication those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements including any applicable laws regulations codes and standards The illustrations charts sample programs and layout examples shown in this guide are intended solely for example Since there are many variables and requirements associated with any particular installation Allen Bradley does not assume responsibility or liability to include intellectual property liability for actual use based upon the examples shown in this publication Allen Bradley publication SGI 1 1 Safety Guidelines For The Application Installation and Maintenance of Solid State Control available from your local Allen Bradley office describes some important differences between solid state equipment and electromechanical devices which should be taken into consideration when applying products such as those described in this publication Reproduction of the contents of this copyrighted publication in whole or in part without written permission of Allen Bradley Company Inc is prohibited Throughout this manual we make notes to alert you
5. 1794 IR8 IT8 1 0 Module Calibration Channel Selection 0 2 Calibration Type Offset Calibration Gain Calibration Input Data Values Channel 1 Start Calibration Channel 3 Channel 4 Channel 5 Channel Channel 7 Calibration Status 5 Click on the channels you want to calibrate 6 Click on the radio button for offset calibration Then click on 1794 IR8 IT8 170 Module Calibration Channel Selection 7 Calibration Type Offset Calibration Gain Calibration Input Data Yalues X Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel amp Channel 7 Offset Calibration Successful 7 When calibration is complete a notification will appear on the calibration status line Calibration Status Publication 1794 6 5 4 Calibrating Your Module 6 9 8 If calibration was not completed successfully you will see a popup similar to the following DeviceNet Manager Calibration Range Failure 9 To see what the values are for the channels click on the button This populates the screen with the actual values appearing at the inputs Note that there is an implied decimal point before the last digit in the value For example channel 0 data value reads 10 The actual reading is 1 0 The 1 indications on the remaining channels indicate open cha
6. 1 Connect resistors across each input channel Connect the low signal side to 24V dc common Resistor values are shown in table 6 A If using a decade box connect all high signal terminals together and attach to one lead from the decade box Connect all low signal terminals together and attach to the other lead and to 24V dc common Set the decade box for the value shown in table 6 A Table 6 A Calibration Resistance Voltage Values for the 1794 IR8 Ideal Unipolar Analog Digital Counts Ideal Counts 10 0 1 5ppm C 4320 0 01 5ppm C 65084 H FE3C 19 0 1 5ppm C 8640 0 01 5ppm C 65084 H FE3C 10 0 196 5ppm C 1728Q 0 01 5ppm C 65084 H FE3C 2 Apply power to the module for 40 minutes before calibrating 3 After the connections stabilize send a block transfer write to the module to set the bit in the calibration mask that corresponds to the channel to be calibrated to 1 and the hi lo bit bit 06 in write word 0 to 1 Set bits 08 through 15 in write word 0 if calibrating all inputs at one time 4 Send another block transfer write to set the cal clk bit 07 in write word 0 to 1 5 Monitor the cal done bit 09 in read word 10 If the calibration is successful the cal done bit will be set to 1 Verify that the bad cal bit 10 in read word 10 and the cal range bit 08 in read word 10 are not set 0 6 Send another BTW to set the cal clk bit 07 in write word 0 to 0
7. 7 Send another BTW to set the hi lo bit bit 06 in write word 0 to 0 8 Monitor the cal done bit 09 in read word 10 The cal done bit will be reset to 0 Calibrating Your RTD Module using DeviceNet Manager Software Cat No 1787 MGR Calibrating Your Module 6 7 9 If individually calibrating channels repeat steps 1 through 7 for offset calibration on any additonal channels you want to calibrate 10 Send a block transfer write to the module to clear all calibration mask bits to 0 The following procedure assumes that you are using DeviceNet Manager software cat no 1787 MGR and have the RTD module installed in a working system Calibration is performed in the following order offset calibration gain calibration Offset Calibration Inputs can be calibrated one at a time or all at once To calibrate the offsets for all inputs at once 1 Connect 1 00 ohm resistors across each input channel Connect the low signal side to 24V dc common If using a decade box connect all high signal terminals together and attach to one lead from the decade box Connect all low signal terminals together and attach to the other lead and to 24V dc common Set the decade box for 1 00 ohm 2 Apply power to the module for 40 minutes before calibrating 3 Click on Configure for the slot containing the RTD module 1794 ADN Flex 1 0 Configuration Flex 1 0 Adapter 9 ALLEN BRADLEY DeviceNet Manager Node Address
8. CONTROL 15 15 DATA FILE Error LENGTH ER gt 13 Block Transfer Write Done Bit Pushbutton i BTW Enable B3 0 BLOCK XFER WRITE EN RACK 02 05 GROUP Done MODULE DN Power up Bit CONTROL 05 B4 10 DATA FILE Error LENGTH ER gt 03 PLC 5 Programming Module Programming 3 3 The PLC 5 program is very similar to the PLC 3 program with the following exceptions block transfer enable bits are used instead of done bits as the conditions on each rung separate block transfer control files are used for the block transfer instructions Figure 3 2 PLC 5 Family Sample Program Structure Program Action BTR Enable Bit N12 0 1 At power up in RUN mode or when the 5 processor is switched from PROG to RUN the user program enables a block transfer read Then it initiates a block transfer write to configure the module Thereafter the program continuously per forms read block transfers Pushbutton ssi Bit 2 The pushbutton allows the user to 15 manually request a block transfer write Power up Bit N13 10 03 PLC 2 Programming BTR BLOCK TRANSFER READ RACK GROUP MODULE A DN p CONTROL DATA FILE LENGTH CONTINUOUS BTW BLOCK TRANSFER WRITE EN RACK GROUP MODULE DN CONTROL DATA FILE ER LENGTH CONTINUOUS The 1794 analog I O modules are not recommended for use with PLC 2 family programmable controllers due to the number of digits needed
9. Common Mode Voltage OV between channels common return System Throughput Normal mode Programmable from 28ms channel to 325ms channel 325ms 1 channel scanned 2 6s 8 channels scanned default Enhanced mode Programmable from 56ms channel to 650ms channel 650ms 1 channel scanned default 2 925s 8 channels scanned Settling Time to 100 of final Available at system throughput rate value Open RTD Detection Out of range reading upscale Open Wire Detection Time Available at system throughput rate Overvoltage Capability 35V dc 25V ac continuous 25 C 250V peak transient Channel Bandwidth dc to 2 62Hz 3db RFI Immunity Error of less than 196 of range at 10V M 27 to 1000MHz Input Offset Drift with 1 5 milliohm C maximum Temperature Specifications continued on next page Publication 1794 6 5 4 2 Specifications Publication 1794 6 5 4 Specifications 1794 IR8 RTD Input Module Gain Drift with Temperature Normal mode 20 ppm C maximum Enhanced mode 10 ppm C maximum RTD Excitation Current 718 394 Indicators 1 red green status indicator Flexbus Current 20mA Power Dissipation 3W maximum 9 31 2V dc Thermal Dissipation Maximum 10 2 BTU hr 31 2V dc Keyswitch Position 3 General Specifications External dc Power Supply Voltage Voltage Range 24V dc nominal 19 2 to 31 2V dc includes 596 ac ripple 19 2V dc for ambient temperatures less than 55 C 24V dc for ambient temperatures le
10. Decimal Bits m Word Octal Bits Description Write Word 2 00 03 Channel 0 RTD Type Bit 09 02 ot 00 RTD Type Range jo Resistance default EXEAT ERI ERI No sensor connected do not scan 1 100 ohm Pt 0 00385 Euro 200 to 870 C pee ptg 100 ohm Pt 0 003916 U S 200 to 630 C 200 ohm Pt 0 00385 po i fo tt 500 ohm Pt 0 00385 KNENENUNL 10 ohm Copper 200 to 260 C A jo 120 ohm Nickel A oo fo tt 100 ohm Nickel Pt oo 1 jo 200 ohm Nickel 500 ohm Nickel oo esa 1101 to 1111 Reserved 04 07 Channel 1 RTD Type see bits 00 09 08 11 Channel 2 RTD Type see bits 00 09 1218 Channel 3 RTD Type see bits 00 039 Write Word 3 00 03 Channel 4 RTD Type see write word 2 bits 00 03 04 07 Channel 5 RTD Type see write word 2 bits 00 03 4444444 08 11 Channel 6 RTD Type see write word 2 bits 00 03 12 18 Channel7 RTD Type see write word 2 bits 00 03 00020 Write Word 4 Reserved Publication 1794 6 5 4 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter 5 7 Defaults Each I O module has default values associated with 1t At default each module will generate inputs status and expect outputs configuration Module Defaults for Factory Defaults Real Time Size Catalog Input Output Input Output Number Default Default Def
11. RTD Analog Input Module 1794 IR8 Read Words RTD Analog Input Module 1794 IR8 Write Words Word Bit Descriptions for the 1794 IR8 RTD Analog Input Module Chapter Summary How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter Chapter About DeviceNetManager Software Polled VO Structure Adapter Input Status Word System Throughput Mapping Data into the Image Table RTD Input Analog Module 1794 IR8 Image Table Mapping Memory Map of RTD Analog Input Module Image Table 1794 8 Word Bit Descriptions for the 1794 IR8 RTD Analog Input Module Defaults T Ta liM no no T To eo iW eo T eo T T T T no hs eo gt T A T A A m e T e I e T e e T T ah p T no eo ne oo eo T gt gt 3 Table of Contents Calibrating Your Module Chapter Objective When and
12. TECHNICAL COMMUNICATION 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124 9705 PLEASE REMOVE Support Services At Allen Bradley customer service means experienced representatives at Customer Support Centers in key cities throughout the world for sales service and support Our value added services include Technical Support e SupportPlus programs e telephone support and 24 hour emergency hotline software and documentation updates technical subscription services Engineering and Field Services application engineering assistance integration and start up assistance field service maintenance support Technical Training lecture and lab courses self paced computer and video based training job aids and workstations e training needs analysis Repair and Exchange Services your only authorized source current revisions and enhancements e worldwide exchange inventory local support 6 Rockwell Automation Allen Bradley a Rockwell Automation Business has been helping its customers improve productivity and quality for more than 90 years We design manufacture and support a broad Allen Bradley range of automation products worldwide They include logic processors power and motion control devices operator interfaces sensors and a variety of software Rockwell is one of the world s leading technology companies Worldwide representation PE dae Lp A jai arrm
13. better than 0 005 ohms 0 05 accuracy OR Decade three 1000 ohm decade 100 ohm per step better than 0 0196 accuracy Precision Decade Any vendor s model that meets or exceeds the above specifications can be used The user is Resistor Box responsible for assuring that the decade box maintains accuracy by periodic calibration as specified by the vendor As a service to its customers Allen Bradley offers this partial list of vendors who can supply decade resistor boxes that meet or exceed the specifications Electro Scientific Industries IET Labs Julie Research Labs Portland OR Westbury NY New York NY Series DB 42 HARS X Series DR 100 Series Industrial Terminal and interconnect Gable Programming terminal for A B family processors Publication 1794 6 5 4 6 2 Calibrating Your Module Manually Calibrating your RTD Input Module Publication 1794 6 5 4 You must calibrate the module in a Flex I O system The module must communicate with the processor and an industrial terminal You can calibrate input channels in any order or all at once Before calibrating your module you must enter ladder logic into the processor memory so that you can initiate block transfer writes BTW to the module and read inputs from the module BTR Important allow the internal module temperature to stabilize apply power to the module for at least 40 minutes before calibrating To manually calibrate the module 1 Apply a reference to t
14. 5 3 T terminal bases compatible 2 5 throughput enhanced mode 4 4 normal mode 4 4 W wiring connections 6 4 methods of _ 2 3 to terminal bases 2 1 wiring connections _2 5 1794 IR8 2 6 6 4 worst case accuracy _A 3 wy Allen Bradley Publication Problem Report If you find a problem with our documentation please complete and return this form Pub Name RTD Module User Manual Check Problem s Type Describe Problem s Internal Use Only Technical Accuracy text i illustration L Completeness L procedure step L illustration L definition E info in manual What information is missing L example L guideline L feature accessibility 1 explanation other info not in manual Clarity What is unclear L Sequence What is not in the right order Other Comments Use back for more comments Your Name Location Phone Return to Marketing Communications Allen Bradley Co 1 Allen Bradley Drive Mayfield Hts OH 44124 6118 Phone 216 646 3176 216 646 4320 Publication ICCG 5 21 August 1995 PN 955107 82 PLEASE FASTEN HERE DO NOT STAPLE Other Comments PLEASE FOLD HERE NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES POSTAGE WILL BE PAID BY THE ADDRESSEE 6 Rockwell Automation Allen Bradley
15. 98765432 10 lt State Bit Node Address Changed Bit The adapter input status word bit descriptions are shown in the following table Bit Description Explanation This bit is set 1 when an error is detected in slot position 0 This bit is set 1 when an error is detected in slot position 1 This bit is set 1 when an error is detected in slot position 2 This bit is set 1 when an error is detected in slot position 3 This bit is set 1 when an error is detected in slot position 4 This bit is set 1 when an error is detected in slot position 5 This bit is set 1 when an error is detected in slot position 6 N This bit is set 1 when an error is detected in slot position 7 This bit is set 1 when the node address switch setting has been changed since power up Bit 0 idle Bit 1 run 10 thru 15 Not used sent as zeroes Possible causes for an I O Module Fault are e transmission errors on the Flex I O backplane failed module e a module removed from its terminal base incorrect module inserted in a slot position e the slot is empty The node address changed bit is set when the node address switch setting has been changed since power up The new node address does not take affect until the adapter has been powered down and then powered back up How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter 5 3 System Throughput Sy
16. Channel 1 Input Data 4 Channel 2 Input Data 5 Channel 3 Input Data 6 Channel 4 Input Data 7 Channel 5 Input Data 8 Channel 6 Input Data 9 Channel 7 Input Data 10 Overrange Bits Underrange Bits Bad Cal Cal Diagnostic Status Pwr Write Word 1 8 bit Calibration Mask Cal CalHi citer Cutoff Enh MDT Clk Cal Lo 2 RTD 3 Type RTD 2 Type RTD 1 Type RTD 0 Type 3 RTD 7 Type RTD 6 Type RTD 5 Type RTD 4 Type 4 Reserved set to 0 Where Enh Enhanced MDT Module Data Type Word Bit Descriptions for the 1794 IR8 RTD Analog Input Module Decimal Bits nod Octal Bits Description Read Word 1 00 15 00 17 Reserved Read Word 2 00 15 00 17 Channel 0 Input data Read Word 3 00 15 00 17 Channel 1 Input data Read Word 4 00 15 00 17 Channel 2 Input data Read Word 5 00 15 00 17 Channel 3 Input data Read Word 6 00 15 00 17 Channel 4 Input data Read Word 7 00 15 00 17 Channel 5 Input data Read Word 8 00 15 00 17 Channel 6 Input data Read Word 9 00 15 00 17 Channel 7 Input data Read Word 10 Underrange bits these bits are set if the input signal is below the input channel s minimum range 08 15 10 17 Overrange bits these bits are set if 1 the input signal is above the input channel s maximum range or 2 an open detector is detected Publication 1794 6 5 4 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter 5 5 Decimal Bits EN Bipolar counts
17. Features of your Modules The module label identifies the keyswitch position wiring and module type removable label provides space for writing individual designations per your application An indicator is provided to show when power is applied to the module 1794 IR8 Module Type Removable Label Allen Bradley 1794 IR8 3 WIRE INPUT 8 CHAN N sim X Keyswitch i Position Indicator 3 iow Fabii dl one et Power On Indicator LL Input Designators Chapter Summary In this chapter we told you about the FLEX I O system and the RTD module and how they communicate with programmable controllers Publication 1794 6 5 4 Before You Install Your Input Module European Union Directive Compliance Chapter 2 How to Install Your RTD Input Module In this chapter we tell you how to install your module how to set the module keyswitch how to wire the terminal base about the indicators Before installing your analog module in the I O chassis You need to As described under Calculate the power requirements of all modules in each chassis Power Requirements page 2 2 Position the keyswitch on the terminal base Installing the Module page 2 4 ATTENTION The RTD module does not receive power from the backplane 24V dc power must be applied to your module before installation If power is not applied t
18. How to Calibrate Your RTD Module Tools and Equipment Manually Calibrating your RTD Input Module Flow Chart for Calibration Procedure Calibration Setups Wiring Connections for the RTD Module Read Write Words for Offset Calibration Gain Calibration Table 6 A Calibration Resistance Voltage Values for the 1794 IR8 Calibrating Your RTD Module using DeviceNet Manager Software Cat No 1787 MGR Offset Calibration Gain Calibration Specifications RTD Accuracy at Worst Case Derating Curve Support Services Technical Support Engineering and Field Services Technical Training Repair and Exchange Services Preface Objectives Audience Vocabulary What This Manual Contains Preface Using This Manual Read this preface to familiarize yourself with this manual and to learn how to use it properly and efficiently We assume that you have previous
19. I O Adapter 4 5 Mapping Data for the The following read and write words and bit word descriptions Analog Modules describe the information written to and read from the RTD input module The module uses up to 11 words of input data and up to 4 words of output data Each word is composed of 16 bits RTD Input Module 1794 IR8 Image Table Mapping Module Image Input Data Channel 0 Input Data Channel 1 Input Data Channel 2 Input Size Input Data Channel 3 Tio Tere m Input Data Channel 4 Input Data Channel 5 Gmm Output Size RTD Type RTD Type RTD Analog Input Module 1794 IR8 Read Words Decimal Bit 15 14 13 12 11 10 09 08 07 o5 04 03 02 oi Octal Bit 17 16 15 13 12 11 EM 07 06 05 04 03 0 Jor 00 Word 0 Reserved 1 Channel 0 Input Data Channel 1 Input Data Channel 2 Input Data Channel 3 Input Data Channel 4 Input Data Channel 5 Input Data Channel 6 Input Data Channel 7 Input Data gt s OD oy Overrange Bits Underrange Bits Bad Cal Cal Diagnostic Pwr fo fe SHANE e Publication 1794 6 5 4 4 6 Writing Configuration to and Reading Status from Your Module with a Remote Adapter Decimal Bit 15 1 Octal Bit 17 EN 15 e RTD Analog Input Module 1794 IR8 Write Words m Cal Lo Word 0 8 bit Calibration Mask Cal Hi citer Cutoff MDT 1 RTD 3 T
20. RTD Module Chapter The FLEX VO System How FLEX I O RTD Modules Communicate with Programmable Controllers Typical Communication Between an Adapter and a Module Features of your Modules Chapter Summary How to Install Your RTD Input Module Before You Install Your Input Module European Union Directive Compliance EMC Directive Low Voltage Directive Power Requirements Wiring the Terminal Base Units 1794 TB2 and TB3 shown Installing the Module Connecting Wiring for the RTD Module Table 2 A Wiring connections for the 1794 IR8 RTD Input Module Example of 2 3 and 4 wire RTD Wiring to a 1794 TB3 Terminal Base Unit Example of 2 3 and 4 wire RTD Wiring to a 1794 TB3T Terminal Base Unit Module Chapter Summary Table of Contents LR un Ls T no fa e 1 N k 1
21. a 2 wire RTD jumper the signal return to the low signal Terminals 39 to 46 are chassis ground terminal ATTENTION Total current draw through the terminal base unit is limited to 10A Separate power connections to the terminal base unit may be necessary Publication 1794 6 5 4 How to Install Your RTD Input Module 2 7 Example of 2 3 and 4 wire RTD Wiring to a 1794 TB3 Terminal Base Unit 0 1 2 3 4 5 6 7 8 9 10 1 12 13 14 15 0 1 SIS 9 9 9 RI ER RTT 1 0 15 SIESIESSSISPEEBESISISBISSIS v 34 5 S 42 43 S SIS 34 51 1794 TB3 Clip or tieback 4th lead 4 Wire RTD 3 Wire RTD 2 Wire RTD Example of 2 3 and 4 wire RTD Wiring to a 1794 TB3T Terminal Base Unit 9 10 11 12 13 14 15 QS S 1 0 15 SEES 34 51 0 D D 2 D Clip or tieback 4th lead 2 Wire RTD 4 Wire RTD 3 Wire RTD Publication 1794 6 5 4 2 8 How to Install Your RTD Input Module Module Indicators The RTD module has one status indicator that is on when power is applied to the module This indicator has 3 different states Flex Allen Bradley refiere WIRE RTD INPUT 8 CHANNEL Qa A INPUTO INPUT1 IMPUT2 IN
22. scaled between 32768 and 32767 1 Unipolar counts scaled between 0 and 65535 02 Enhanced mode select measures voltage drop across a precision resistor in the module to compare with the unknown input 03 05 AID Filter First Notch Frequency Bit o5 04 Definition 0 1 5 5 0 Word Description Read Word 11 0001 Not used set to 0 Reserved Powerup bit this bit is set 1 until configuration data is received by the module Critical Failure Bits If these bits are anything other than all zeroes return the module to the factory for repair Unused set to 0 Calibration Range bit set to 1 if a reference signal is out of range during calibration Calibration Done bit set to 1 after an initiated calibration cycle is complete Calibration Bad bit set to 1 if the channel has not had a valid calibration Unused set to 0 Write Word 1 Module Data Type Bit 01 EN 0 EN default 0 oF 1 EHEH 1000Hz Calibration High Low bit This bit is set during gain calibration reset during offset calibration 07 Calibration clock this bit must be set to 1 to prepare for a calibration cycle then reset to 0 to initiate calibration 08 15 Calibration mask The channel or channels to be calibrated will have the correct mask bit set Bit 8 corresponds to channel 0 bit 9 to channel 1 and so on Publication 1794 6 5 4 5 6 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter
23. 00 ohm Nickel 76 to 482 F 760 to 4820 0 19F 120 ohm Nickel 112 to 500 F 0 19F 200 ohm Nickel 76 to 482 F 0 1 F 500 ohm Nickel 76 to 482 F 0 1 F 10 ohm Copper 328 to 500 F 0 1 F Note Temperature data has an implied decimal point 1 space to the right of the last digit divide by 10 For example a readout of 1779 would actually be 177 9 You select input scaling using the designated words of the write block transfer instruction Refer to the Bit Word description for write word 0 bits 00 and 01 You can select an enhanced mode of operation for this module The enhanced mode lets you determine the value of an unknown RTD input The voltage drop across a precision resistor in the module is taken once each sensor scan and compared to the unknown input The result is used to determine the value of the unknown RTD This results in improved module temperature drift characteristics and accuracy However since the comparision is done each program scan the result is decreased module throughput Publication 1794 6 5 4 4 4 Writing Configuration to a Hardware First Notch Filter A D Filter First Notch 10Hz Frequency P effective resolution 16 bits Number of channels scanned 1 325 A 5 1 6255 7 2 2755 1 Default setting AID Filter First Notch Frequency effective resolution 10Hz 16 bits Number of channels scanned Lm Default setting NP OD oy N
24. 0000 OOOO00000000000 OOOOOOOOOQOOOQOQ Q LL 17 u 24V dc Note All modules must be analog modules for this configuration Wiring when total current draw is less than 10A Discrete Discrete Discrete RTD Module Individual Module Module Module O000000000000000 0000000000000000 0000000000000000 OO00000000000000 esa galaeeoocoocooooooco ROOOOOOOOOOOOOOOO 0 00000000000000 O qpOO0000000909000 E e ET E E 24V dc 24V dc or 120V ac Note Use this configuration if using any 24V dc or noisy dc discrete I O modules in your system 120V ac y RTD Module wiring separate from discrete wiring Wiring when total current draw is greater than 10A TAM Discrete RTD or Analo RTD or Analo RTD or Anal Combination 9 9 or Ana og Module Module Module Module OOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOO SOOOOOOOOOOOOOOOO 4OO00000000000000 OOO0000000000000 O 24V dc 24V dc or 120V ac Note All modules powered by the same power supply must be analog modules for this configuration Total current draw through any base unit must not be greater than 10A Publication 1794 6 5 4 2 4 How to Install Your RTD Input Module Installing the Module Publication 1794 6 5 4 The RTD analog module mounts on a 1794 TB2 TB3
25. 1 Reading Data From Your Module Publication 1794 6 5 4 nd Reading Status from Your Module with a Remote I O Adapter A hardware filter in the analog to digital converter lets you select a frequency for the first notch of the filter Selection of the filter influences the analog to digital output data rate and changes the module throughput Module throughput is a function of the number of inputs used and the first notch filter Both of these influence the time from an RTD input to arrival at the flexbus backplane Throughput in Normal Mode 50Hz 60Hz 100Hz 500Hz 1000Hz 16 bits 16 bits 16 bits 11 bits 9 bits System Throughput in ms or s 725 425 375 275 185 155 140 870 510 450 330 222 186 168 aa 595 525 385 259 196 4 2 2 2 Throughput in Enhanced Mode 25Hz 50Hz 60Hz 100Hz 250Hz 500Hz 1000Hz 16 bits 16 bits 16 bits 16 bits 16 bits 11 bits 9 bits System Throughput in ms or s 290 170 150 110 56 IE 1 015s 595 525 385 259 196 1 16s 680 60 40 296 248 224 1 3055 765 675 495 333 279 252 a e A e e e NN co e Read programming moves status and data from input module to the processor s data table in one I O scan The processor s user program initiates the request to transfer data from the RTD input module to the processor Writing Configuration to and Reading Status from Your Module with a Remote
26. 22 Load From File Load from Device Module Type Ept RTD Analog input Module sicco Save To File 1 0 Summary 8pt Relay Output Module Slot 1 Save to Device 16pt 24 Vdc Sink Input Module sj Slot 2 1 0 Configuration 4pt Analog Output Module Slot 3 gt Idle Reset Dutputs To Zero 8 Pt Analog Input Module sj Slot 4 Run gt Fault Reset Outputs To Zero 16pt 24 Vdc Src Output Module B 5 Idle Fault Outputs Remain in Idle State 16pt 24 Sink Input Module sj Slot amp Module Fault Zero Inputs 16pt 24 Src Output Module Slot 7 r Module Configuration 2 JEJE Type Display 6 Name Catalog No Close Request Sent Publication 1794 6 5 4 6 8 Calibrating Your Module The following screen appears 1794 IR8 8 Pt RTD Analog I0 Module Module Slot Position 0 120 Data Sizes rnm Set to Defaults Cancel Output Size 0 words Calibration Data Description Configuration Module Data Type Degrees Centigade E A D Filter First Notch Frequency fon E Enhanced Mode RTD Type Channel 0 Resistance E Chanel 4 Resistance s Channel 1 Resistance Channel 5 Resistance Channel 2 Resistance E Channel Resistance H Channel 3 Resistance Channel 7 Resistance 4 Click on to get to the calibration screen
27. 24V dc common Set the decade box for 1 00 ohm 2 Apply power to the module for 40 minutes before calibrating 3 After the connections stabilize use a block transfer write to set the bit s in the calibration mask that correspond to the channel s you want to calibrate to 1 Bits 08 through 15 in write word 0 4 Send another block transfer write to set the cal clk bit 07 in write word 0 to 1 5 Monitor the cal done bit 09 in read word 10 If the calibration is successful the cal done bit will be set to 1 Verify that the bad cal bit 10 in read word 10 and the cal range bit 08 in read word 10 are not set 0 6 Send another block transfer write to set the cal clk bit 07 in write word 0 to 0 7 Monitor the cal done bit 09 in read word 10 The cal done bit will be reset to 0 8 If the calibration is successful proceed to the gain calibration Publication 1794 6 5 4 6 6 Calibrating Your Module Type of RTD 1000 Pt alpha 0 00385 1000 alpha 0 003916 1200 Nickel alpha 0 00672 1000 Nickel alpha 0 00618 10Q Copper alpha 0 00427 2000 Pt alpha 0 00385 200 Nickel alpha 0 00618 5000 Pt alpha 0 00385 500Q Nickel alpha 0 00618 1 Gain is automatically set when RTD is selected Publication 1794 6 5 4 Analog Digital Offset Calibration Value Gain 8 default Gain Calibration After completing the offset calibration proceed with the gain calibration
28. 3 D daisy chaining wiring _2 3 default values _5 7 derating curve _A 3 DeviceNet Manager software _5 1 DeviceNet Manager software _6 7 E enhanced mode 4 3 example RTD 1794 TB3 2 7 RTD 1794 TB3A _2 7 F features of the module 1 3 first notch filter 4 4 flow chart calibration 6 3 G gain calibration _6 6 using DeviceNet Manager _6 10 I O module fault 5 2 indicators states _2 8 status _2 8 input ranges _4 2 input scaling _4 2 input status word _5 2 installation module _ 2 4 Index K keyswitch positions _ 2 4 M manual calibration _6 2 mapping 1794 IR 4 5 1794 IR8 _5 3 memory map 1794 IR8 _5 4 module shipping state 6 1 module fault _5 2 module features _1 3 module installation _ 2 4 0 offset calibration _6 5 using DeviceNet Manager 6 7 optimal defaults _5 7 P PLC 2 programming _3 3 polled 1 0 structure 5 1 power defaults _5 7 preparing for calibration _6 2 programming example PLC 3 3 2 PLC 5 3 3 R range selecting _4 2 read write words for calibration _6 4 removing and replacing under power RIUP 2 4 RTD accuracy at worst case _A 3 specifications _A 1 RTD analog input mapping 1794 IR 4 5 1794 IR8 _5 3 RTD 1794 TB3 example _2 7 RTD 1794 TB3A example 2 7 S sample program _3 3 scaling 4 2 software DeviceNet Manager 5 1 specifications _A 1 status indicators 2 8 system throughput
29. PUT3 INPUT4 INPUT5 INPUT6 INPUT 7 x Z t Status Indicator indicates diagnostic results and configuration status B Insertable label for writing individual input designations Color Meaning Red Indicates a critical fault diagnostic failure etc Blinking Indicates a noncritical fault such as open sensor input out of range etc Green Module is configured and fully operational Blinking Module is functional but not configured Module not powered Chapter Summary In this chapter we told you how to install your input module in an existing programmable controller system and how to wire to the terminal base units Publication 1794 6 5 4 Chapter Objectives Block Transfer Programming Chapter 3 Module Programming In this chapter we tell you about block transfer programming e sample programs for the PLC 3 and PLC 5 processors Your module communicates with the processor through bidirectional block transfers This is the sequential operation of both read and write block transfer instructions A configuration block transfer write BTW is initiated when the RTD module is first powered up and subsequently only when the programmer wants to enable or disable features of the module The configuration BTW sets the bits which enable the programmable features of the module such as scaling alarms ranges etc Block transfer reads are performed to retrieve information from th
30. Range Resistance 1 to 433Q RTD Input Signal Range Alpha Degrees 100 ohm Pt Euro 0 00385 200 to 870 C 100 ohm Pt U S 0 003916 200 to 630 C 200 ohm Pt 0 00385 200 to 630 C 500 ohm Pt 0 00385 200 to 630 C 100 ohm Nickel 0 00618 60 to 250 C 120 ohm Nickel 0 00672 80 to 290 C 200 ohm Nickel 0 00618 60 to 250 C 500 ohm Nickel 0 00618 60 to 250 C 10 ohm Copper 0 00427 200 to 260 C You select individual channel ranges using write words 1 and 2 of the block transfer write instruction Input Scaling Scaling lets you report each channel in actual engineering units Scaled values are in integer format Maximum 1 to 4330 100m 100 ohm Pt Euro 200 to 870 C 2000 to 8700 0 1 C 100 ohm Pt U S 0 1 200 ohm Pt Euro 200 to 630 C 2000 to 6300 0 19C 500 ohm Pt Euro 200 to 630 C 2000 to 6300 0 1 C 100 ohm Nickel 60 to 250 C 600 to 2500 0 1 C 120 ohm Nickel 80 to 290 C 800 to 2900 0 1 C 200 ohm Nickel 60 to 250 C 600 to 2500 0 19 500 ohm Nickel 60 to 250 C 600 to 2500 0 19 10 ohm Copper 200 to 260 C 2000 to 26000 0 19C Continued on next page Publication 1794 6 5 4 Writing Configuration to and Reading Status from Your Module with a Remote I O Adapter 4 3 Enhanced Mode 100 ohm Pt Euro 328 to 1598 0 19F 100 ohm Pt U S 328 to 1166 F 3280 to 11660 0 19F 200 ohm Pt Euro 328 to 1166 F 0 19F 500 ohm Pt Euro 328 to 1166 F 0 19F 1
31. ager software is a tool used to configure your FLEX I O DeviceNet adapter and its related modules This software tool can be connected to the adapter via the DeviceNet network You must understand how DeviceNetManager software works in order to add a device to the network Refer to the DeviceNetManager Software User Manual publication 1787 6 5 3 Output data is received by the adapter in the order of the installed I O modules The Output data for Slot 0 is received first followed by the Output data for Slot 1 and so on up to slot 7 The first word of input data sent by the adapter is the Adapter Status Word This is followed by the input data from each slot in the order of the installed I O modules The Input data from Slot O is first after the status word followed by Input data from Slot 2 and so on up to slot 7 DeviceNet Adapter Read Data Adapter Status Slot 0 Input Data Network READ Slot 1 Input Data Slot 7 Input Data gt Write Data Slot 0 Output Data Slot 1 Output Data Slot 7 Output Data Publication 1794 6 5 4 5 2 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter Publication 1794 6 5 4 1 0 Module Fault Node Address Changed I O State Adapter Input Status Word The input status word consists of e O module fault bits 1 status bit for each slot node address changed 1 bit e O status 1 bit 1 0 Module Fault Bits Bit 15 10 through 15
32. ased I O The FLEX I O system contains the following components shown below RTD Input Module Terminal Base ZZZZZZZZZZZz 2 22 72 7 20125 e adapter power supply powers the internal logic for as many as eight I O modules e terminal base contains a terminal strip to terminate wiring for two or three wire devices I O module contains the bus interface and circuitry needed to perform specific functions related to your application FLEX I O RTD modules are block transfer modules that interface analog signals with any Allen Bradley programmable controllers that have block transfer capability Block transfer programming moves input or output data words between the module s memory and a designated area in the processor data table Block transfer programming also moves configuration words from the processor data table to module memory Publication 1794 6 5 4 1 2 Overview of FLEX I O and your RTD Module The adapter power supply transfers data to the module block transfer write and from the module block transfer read using BTW and BTR instructions in your ladder diagram program These instructions let e the adapter obtain input or output values and status from the module youestablish the module s mode of operation The illustration describes the communication process Typical Communication Between an Adapter and a Module The adapter transfers your configuration data External devi
33. ating Curve User Applied 24V dc Supply versus Ambient Temperature 31 2 m e 5 gt 240 The area within the curve represents the safe lt operating range for the module under various conditions of user supplied 24V dc supply voltages and ambient temperatures 192 __ 25 C 40 C 50 C 55 C Sale operaling area Ambient Temperature Publication 1794 6 5 4 Symbols Empty 1 P 1 P 2 1 1 1 3 2 1 3 3 5 3 6 1 3 6 1 accuracy worst case 3 adapter input status word 5 1 audience P 1 B bit word description RTD analog module 1794 IR8 4 6 5 4 block transfer read 1 2 write 1 2 block transfer programming 3 1 block transfer read 4 4 1794 IR8 4 5 block transfer write 1794 IR8 4 6 configuration block 1794 IR8 4 6 input range selection 4 2 C calibration gain 6 6 manual 6 2 offset 6 5 periodic 6 1 preparation 6 2 setups 6 4 tools 6 1 types of 6 1 using decade box 6 4 using DeviceNet Manager 6 7 using resistors 6 4 calibration flow chart 6 3 calibration resistance voltage values table of 6 6 calibration words _ 6 4 communication between module and adapter _1 2 compatible terminal bases _2 5 configurable features 4 1 Index connecting wiring _2 5 6 4 considerations pre installation _2 1 curent draw through base units _2 2 curve supply voltage vs ambient temperature
34. ault Default 1794 IR8 8 Input RTD Input 0 Factory defaults are the values assigned by the adapter when you e first power up the system and no previous stored settings have been applied For analog modules the defaults reflect the actual number of input words output words For example for the 8 RTD input analog module you have 11 input words and 4 output words You can change the I O data size for a module by reducing the number of words mapped into the adapter module as shown in real time sizes Real time sizes are the settings that provide optimal real time data to the adapter module Analog modules have 15 words assigned to them This is divided into input words output words You can reduce the I O data size to fewer words to increase data transfer over the backplane For example an 8 RTD input module has 11 words input 4 words output with factory default You can reduce the write words to 0 thus eliminating the configuration setting and unused words And you can reduce the read words to 9 by eliminating the underrange overrange and calibration status words For information on using DeviceNetManager software to configure your adapter refer to the DeviceNetManager Software User Manual publication 1787 6 5 3 Publication 1794 6 5 4 Chapter 6 Calibrating Your Module Chapter Objective In this chapter we tell you how to calibrate your modules When and How to Your module is shipped to you a
35. bration cycle is complete Calibration Bad bit set to 1 if the channel has not had a valid calibration Unused set to 0 Writing Configuration to and Reading Status from Your Module with a Remote I O Adapter 4 7 Dec Bits RS Word Octal Bits Description Write word 0 00 01 Module Data Type Bit 01 0 C default 0 1 EN Bipolar counts scaled between 32768 and 32767 1 Unipolar counts scaled between 0 and 65535 02 Enhanced mode select measures voltage drop across a precision resistor in the module to compare with the unknown input This improves module temperature drift characteristics but reduces module throughput 03 05 A D Filter First Notch Frequency Bit 05 0 0 0 0 EX EN 0 1 250Hz 1 0 500Hz 1 1 1000Hz Calibration High Low bit This bit is set during gain calibration reset during offset calibration Calibration clock this bit must be set to 1 to prepare for a calibration cycle then reset to 0 to initiate calibration 08 15 10 17 Calibration mask The channel or channels to be calibrated will have the correct mask bit set Bit 8 corresponds to channel 0 bit 9 to channel 1 and so on Publication 1794 6 5 4 4 8 Writing Configuration to and Reading Status from Your Module with a Remote Adapter Dec Bits Octal Bits Description Write Word 1 00 03 Channel 0 RTD Type Bit 09 02 ot 00 RTD Type Range
36. ces transmit tortne module using BTW analog signals to the module Flexbus Allen Bradley pe Allen Bradley ae E tee INPUTO INPUT 1 INPUT2 INPUT3 INPUT4 INPUTS INPUT6 INPUT7 Your ladder program instructs the 9 adapter to perform a BTR of the values 5 00000000000000 and stores them in a data table a SY ESTEE SEO e eo rarararrrrrrrr rr dr rp dr 1rp1 DD Lp we i The adapter and module determine The module converts analog L thatthe transfer was made without error signals into binary format and and input values are within specified stores these values until the range adapter requests their transfer Your ladder program can use and or move the data if valid before it is written over by the transfer of new data in a subsequent transfer Your ladder program performs BTWs to the module only when you power it up or any time you wish to reconfigure the module Publication 1794 6 5 4 Overview of FLEX I O and your RTD Module 1 3
37. e module Block transfer read BTR programming moves status and data from the module to the processor s data table The processor user program initiates the request to transfer data from the module to the processor The transferred words contain module status channel status and input data from the module ATTENTION If the RTD module is not powered up before the remote I O adapter the adapter will not recognize the module Make certain that the RTD module is installed and powered before or simultaneously with the remote I O adapter If the adapter does not establish communication with the module cycle power to the adapter The following sample programs are minimum programs all rungs and conditioning must be included in your application program You can disable BTRs or add interlocks to prevent writes if desired Do not eliminate any storage bits or interlocks included in the sample programs If interlocks are removed the program may not work properly Your program should monitor status bits and block transfer read activity Publication 1794 6 5 4 3 2 Module Programming Sample programs for Flex I O Analog Modules Program Action At power up in RUN mode or when the processor is switched from PROG to RUN the user program enables a block transfer read Then it initiates a block transfer write to configure the module Thereafter the program continuously performs read block transfers Note You must create the data f
38. for high resolution Chapter Summary In this chapter we told you how to program your programmable controller You were given sample programs for your PLC 3 and PLC 5 family processors Publication 1794 6 5 4 Chapter Objectives Configuring Your RTD Module Chapter 4 Writing Configuration to and Reading Status from Your Module with a Remote I O Adapter In this chapter we tell you how to configure your module s features toenter your data e to read data from your module about the read block format The RTD module is configured using a group of data table words that are transferred to the module using a block transfer write instruction The software configurable features available are e input output range selection including full range and bipolar selectable first notch filter e data reported in F C unipolar or bipolar count enhanced mode Note PLC 5 family programmable controllers that use 6200 software programming tools can take advantage of the IOCONFIG utility to configure these modules IOCONFIG uses menu based screens for configuration without having to set individual bits in particular locations Refer to your 6200 software literature for details Publication 1794 6 5 4 4 2 Writing Configuration to and Reading Status from Your Module with a Remote Adapter Range Selection Individual input channels are configurable to operate with the following sensor types Input Signal
39. he desired input s 2 Send a message to the module indicating which inputs to read and what calibration step is being performed offset The module stores this input data 3 Apply a second reference signal to the module 4 Send a second message indicating which inputs to read and what calibration step is being performed gain The module computes new calibration values for the inputs Once the calibration is complete the module reports back status information about the procedure The following flow chart shows the procedure for calibration Important Perform the offset calibration procedure first then the gain calibration procedure Calibrating Your Module 6 3 Flow Chart for Calibration Procedure Apply reference signal for offset calibration to each channel to be calibrated Set corresponding bits in the calibration mask and set cal Hi Lo 0 Set cal clk 1 er Cal done 1 9 NO Bad cal 0 Cal range 0 9 YES pe 9 Exit YES Legend block transfer write block transfer read Apply reference signal for gain calibration to each channel to be calibrated Retain corresponding bits in the calibration mask and set cal Hi Lo 1 Set cal clk 1 ery er Cal done 1 9 NO Bad cal 0 Cal range 0 Exit Set cal clk 0 and cal hi lo 0 Cal done 0 Clear corresponding bits in the cal
40. he module position will appear to the adapter as an empty slot in your chassis If this product has the CE mark it is approved for installation within the European Union and EEA regions It has been designed and tested to meet the following directives EMC Directive This product is tested to meet Council Directive 89 336 EEC Electromagnetic Compatibility EMC and the following standards in whole or in part documented in a technical construction file e EN 50081 2EMC Generic Emission Standard Part 2 Industrial Environment EN 50082 2EMC Generic Immunity Standard Part 2 Industrial Environment This product is intended for use in an industrial environment Publication 1794 6 5 4 2 2 How to Install Your RTD Input Module Power Requirements Publication 1794 6 5 4 Low Voltage Directive This product is tested to meet Council Directive 73 23 EEC Low Voltage by applying the safety requirements of EN 61131 2 Programmable Controllers Part 2 Equipment Requirements and Tests For specific information required by EN 61131 2 see the appropriate sections in this publication as well as the following Allen Bradley publications Industrial Automation Wiring and Grounding Guidelines For Noise Immunity publication 1770 4 1 Guidelines for Handling Lithium Batteries publication AG 5 4 e Automation Systems Catalog publication B111 The wiring of the terminal base unit is determined by the current draw th
41. ibration mask Publication 1794 6 5 4 6 4 Calibrating Your Module Calibration Setups Using Resistors Using a Decade Box 0 15 34 51 C Decade Box 1794 TB3 TB3T Wiring Connections for the RTD Module 1794 TB2 and TB3 Terminal Base Units Shield Return 1794 TB3T Terminal Base Unit High Signal Terminal RTD Channel High Signal Terminal Low Signal Terminal Signal Return Shield Low Signal Return Terminal Signal Return Ea Ni uy NEN 0 1 6 7 A 24V dc Common 16 thru 33 16 17 19 21 23 25 27 29 31 and 33 24V dc power 1794 TB2 34 and 51 1794 TB3 34 thru 51 34 35 50 and 51 1 When using a 2 wire RTD jumper the signal return to the low signal 2 Terminals 39 to 46 are chassis ground terminal Read Write Words for Calibration Read Word 10 Write Word 0 Cal Cal Hi 8 bit Calibration Mask Filter Cutoff E Publication 1794 6 5 4 Calibrating Your Module 6 5 Offset Calibration Inputs can be calibrated one at a time or all at once To calibrate the offsets for all inputs at once proceed as follows 1 Connect 1 00 ohm resistors across each input channel Connect the low signal side to 24V dc common If using a decade box connect all high signal terminals together and attach to one lead from the decade box Connect all low signal terminals together and attach to the other lead and to
42. ile for the block transfers before you enter the block transfer instructions The pushbutton allows the user to manually request a block transfer write Publication 1794 6 5 4 1 The following sample programs show you how to use your analog module efficiently when operating with a programmable controller These programs show you how to e configure the module read data from the module update the module s output channels if used These programs illustrate the minimum programming required for communication to take place PLC 3 Programming Block transfer instructions with the PLC 3 processor use one binary file in a data table section for module location and other related data This is the block transfer control file The block transfer data file stores data that you want transferred to your module when programming a block transfer write or from your module when programming a block transfer read The address of the block transfer data files are stored in the block transfer control file The same block transfer control file is used for both the read and write instructions for your module A different block transfer control file is required for every module A sample program segment with block transfer instructions is shown in Figure 3 1 and described below Figure 3 1 PLC 3 Family Sample Program Structure BTR Enable Block Transfer BLOCK XFER READ im Read Done Bit RACK B3 0 GROUP Done 1 MODULE DN
43. ion 1794 6 5 4 P 2 Using This Manual Conventions We use these conventions in this manual In this manual we show Like this that there is more information about a topic in another chapter in this manual that there is more information about the topic in another manual For Additional Information For additional information on FLEX I O systems and modules refer to the following documents eS Publications atalo 2 Number Description Installation User Instructions Manual 1787 MGR DeviceNetManager Software User Manual 1787 6 5 3 Industrial Automation Wiring and Grounding 1770 4 1 Guidelines for Noise Immunity 1794 1794 FLEX I O Product Data 1794 2 1 1794 ADN DeviceNet Adapter 1794 5 14 1794 6 5 5 1794 ASB Remote I O Adapter 1794 5 11 1794 6 5 3 Summary This preface gave you information on how to use this manual efficiently The next chapter introduces you to the RTD module Publication 1794 6 5 4 Chapter Objectives The FLEX I O System Adapter Power Supply How FLEX I O RTD Modules Communicate with Programmable Controllers Chapter 1 Overview of FLEX 1 0 and your RTD Module In this chapter we tell you about e what the FLEX I O system is and what it contains how FLEX I O modules communicate with programmable controllers the features of your RTD module FLEX I O is a small modular I O system for distributed applications that performs all of the functions of rack b
44. lready calibrated If a calibration Calibrate Your RTD check is required the module must be in a FLEX I O system Module Perform module calibration periodically based on your application Module calibration may also be required to remove module error due to aging of components in your system Offset calibration must be done first followed by gain calibration Calibration can be accomplished using any of the following methods manual calibration as described below e 6200 I O CONFIGURATION software refer to your 6200 software publications for procedures for calibrating DeviceNetManager Software refer to your DeviceNet Manager software documentation for the DeviceNet Adapter Module Cat No 1794 ADN Some portion of this calibration is included here for use by users proficient with DeviceNet Adapter configuration software Tools and Equipment To calibrate your RTD input module you will need the following tools and equipment Tool or Equipment Description High Precision Resistors Lower Precision Resistors 4320 8640 17280 If calibration to rated accuracy is not required lower precision resistors 0 0196 5ppm C can be used Add percentage of tolerance and temperature coefficient 1 ohm 0 1 5ppm C error for expected accuracy Accuracy Minimum three decades Precision Resistors Decade one 10 ohm decade 1 ohm per step better than 0 005 ohms 0 5 accuracy Decade two 100 ohm decade 10 ohm per step
45. ly used an Allen Bradley programmable controller that you are familiar with its features and that you are familiar with the terminology we use If not read the user manual for your processor before reading this manual In addition if using this module in a DeviceNet system you must be familiar with e DeviceNetManager Software cat no 1787 MGR e Microsoft Windows In this manual we refer to e the individual RTD module as the module the programmable controller as the controller or the processor The contents of this manual are as follows Title What s Covered Overview of Flex I O and Your RTD Describes features capabilities and hardware Module components How ie Install Your RTD Input Installation and connecting wiring Module Module Programming Block transfer programming and programming examples Writing Configuration to and Reading Describes block transfer write and block transfer read Status from Your Module with a configurations including complete bit word descriptions Remote I O Adapter How Communication Takes Place Describes communication over the I O backplane and 1 0 Image Table Mapping with between the module and the adapter and how data is the DeviceNet Adapter mapped into the image table Lists the tools needed and the methods used to calibrate the RTD input module Calibrating Your Module Specifications Module specifications accuracy and derating curve Publicat
46. nnels 1794 IR8 IT8 1 0 Module Calibration Channel Selection 0 Calibration Type 2 Input Data Values Offset Calibration Channel 0 T C Gain Calibration Channel 3 1 Channel 4 4 Channel 5 1 Channel 1 Channel 7 4 Calibration Status Received open response Publication 1794 6 5 4 6 10 Calibrating Your Module Publication 1794 6 5 4 Gain Calibration Make sure that you have calibrated the offset for this channel before calibrating the gain 1 Connect resistors across each input channel Connect the low signal side to 24V dc common Resistor values are shown in table 6 A If using a decade box connect all high signal terminals together and attach to one lead from the decade box Connect all low signal terminals together and attach to the other lead and to 24V dc common Set the decade box for the value shown in table 6 A 2 Click on the channels you want to calibrate 3 Click on the radio button for gain calibration Then click on Start Calibration X Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel Channel 7 1794 IR8 IT8 1 0 Module Calibration Channel Selection Input Data Values Calibration Status c ain Calibration Successful Calibration Type Offset Calibration Gain Calibration 4 When calibration is com
47. o the module 6 Repeat the above steps to install the next module in its terminal base unit How to Install Your RTD Input Module 2 5 Connecting Wiring for the Wiring to the RTD module is made through the terminal base unit on RTD Module which the module mounts Compatible terminal base unit are 1794 TB2 1794 TB3 1794 TB3T Yes Module 1794 IR8 1 The 1794 TB3T terminal base unit contains cold junction compensation for use with thermocouple modules 1794 TB2 and 1794 TB3 1794 TB3T Where V 24V dc N additional input V 24V dc These terminals on 1794 TB3 only C 24V dc common chassis ground CJC cold junction compensation COM 24V dc common Connecting Wiring using a 1794 TB2 TB3 and TB3T Terminal Base Units 1 Connect the individual signal wiring to numbered terminals on the 0 15 row A on the terminal base unit Connect the high side to the even numbered terminals and the low side to the odd numbered terminals See Table 2 A 2 Connect channel common to the associated signal return terminal on row B as shown in Table 2 A 3 Terminate shields On 1794 TB2 and TB3 bases only terminate shields to the associated shield return terminals on row B e On 1794 TB3T bases only terminate shields to terminals 39 to 46 on row C Important 1794 2 and TB3 terminal base units have row B bussed together When you terminate your shields to this row the shields will be at the same
48. or TB3T terminal base unit DODOOOOD d gt gt oes SECETA p area 24222222222 22 6 1 Rotate the keyswitch 1 on the terminal base unit 2 clockwise to position 3 2 Make certain the flexbus connector 3 is pushed all the way to the left to connect with the neighboring terminal base adapter You cannot install the module unless the connector is fully extended ATTENTION Remove field side power before removing or inserting the module This module is designed so you can remove and insert it under backplane power When you remove or insert a module with field side power applied an electrical arc may occur An electrical arc can cause personal injury or property damage by e sending an erroneous signal to your system s field devices causing unintended machine motion e causing an explosion in a hazardous environment Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector Worn contacts may create electrical resistance 3 Before installing the module check to make sure that the pins on the bottom of the module are straight so they will align properly with the female connector in the terminal base unit 4 Position the module 4 with its alignment bar 5 aligned with the groove 6 on the terminal base 5 Press firmly and evenly to seat the module in the terminal base unit The module is seated when the latching mechanism 7 is locked int
49. plete a notification will appear on the calibration status line button populates the screen with the actual values appearing at the inputs Note that there is an implied decimal point before the last digit in the value For example if channel 0 data value reads 6299 The actual reading is 629 9 X Channel Channel 1 Channel 2 mi Channel 3 Channel 4 Channel 5 Channel Channel 7 Input Data Values 6299 1794 IR8 IT8 1 0 Module Calibration Channel Selection Calibration Type Offset Calibration Gain Calibration Start Calibration Calibration Status Received open response Calibrating Your Module 6 11 After both offset and gain calibrations are successful click on You will be returned to the module configuration screen Either Save to Flex I O adapter or save to a file by clicking on the appropriate button Flex 1 0 Adapter Node Address 22 r Module Configuration Module Type Configure Empty Slot 2 le le 4pt Analog Output Module Pt Analog Input Module Slot 4 Empty Slot 5 Empty Slot amp 16pt 24 Vdc Src Output Module Slot 7 Type Display 6 Name Catalog No le le 1794 ADN Flex I 0 Configuration ALLEN BRADLEY DeviceNet Manager J N Save to Flex 1 0 Help Fenfiguration Run gt Idle Reset Ou
50. potential as the power supply return 4 Connect 24V dc to terminal 34 on the 34 51 row C and 24V common to terminal 16 on the B row Important reduce susceptibility to noise power analog modules and discrete modules from separate power supplies Publication 1794 6 5 4 2 6 How to Install Your RTD Input Module 5 If daisy chaining the 24V dc power to the next base unit connect a jumper from terminal 51 on this base unit to terminal 34 on the next base unit ATTENTION Do not daisy chain power or ground from the RTD terminal base unit to any ac or dc discrete module terminal base unit ATTENTION The RTD modules do not receive power from the backplane 24V dc power must be applied to your module before operation If power is not applied the module position will appear to the adapter as an empty slot in your chassis If the adapter does not recognize your module after installation is completed cycle power to the adapter Table 2 A Wiring connections for the 1794 IR8 RTD Input Module 1794 TB2 and TB3 Terminal Base Units 1794 TB3T Terminal Base Unit RTD Channel High Signal Low Signal Signal Shield High Signal Low Signal Signal Shield Terminal Terminal Return Return Terminal Terminal Return Return 0 0 1 17 18 0 1 17 39 1 2 3 19 20 2 3 19 40 24V dc Common 16 thru 33 16 17 19 21 23 25 27 29 31 and 33 24V dc power 1794 TB2 34 and 51 34 35 50 and 51 1794 TB3 34 thru 51 1 When using
51. rough the terminal base Make certain that the current draw does not exceed 10A ATTENTION Total current draw through the terminal base unit is limited to 10A Separate power connections may be necessary How to Install Your RTD Input Module 2 3 Methods of wiring the terminal base units are shown in the illustration below Wiring the Terminal Base Units 1794 TB2 and TB3 shown ATTENTION Do not daisy chain power or ground from the RTD terminal base unit to any ac or dc discrete module terminal base unit RTD or Analog RTD or Analog RTD or Analog RTD or Analog Module Module Module Module Daisy chaining OO000000000000000 0090000000000000 0000000000000000 0000000000000000 9000000000000000 5055000000000020 0550050000009000 500550000000
52. ss than 55 C 31 2V dc for ambient temperatures less than 409C See derating curve 140mA 9 24V dc 1 8Hx 37W x 2 1D 45 7 x 94 0 x 53 3 Supply Current Dimensions Inches Millimeters Environmental Conditions Operational Temperature Storage Temperature 0 to 55 C 32 to 131 F See derating curve 40 to 85 C 40 to 185 F Relative Humidity 5 to 95 noncondensing operating 5 to 8096 noncondensing nonoperating Shock Operating 30 g peak acceleration 11 1 ms pulse width Nonoperating 50 g peak acceleration 11 1 ms pulse width Vibration Tested 5 g 9 10 500Hz per IEC 68 2 6 Agency Certification e CSA certified when product or packaging e CSA Class Division 2 Groups A B C D certified marked UL listed CE marked for all applicable directives Installation Instructions Publication 1794 5 22 Specifications A 3 RTD Accuracy at Worst Case Worst Case Accuracy RTD Type Me Normal Mode Enhanced Mode Resolution C C C 100 ohm Pt Euro 0 00385 0 56 1 0 0280 0 5 0017 0031 7100 ohm Pt U S 0 003916 05 10 02 05 0017 2000hmPt 0 00385 056 10 0280 05 0 034 0 062 500ohmPt 0 00385 056 10 0280 05 0 069 0 124 7100 ohm Nickel 0 00618 035 063 0175 032 001 0 018 7120 ohm Nickel 0 00672 032 058 oteo 029 001 0 02 7200 ohm Nickel 0 00618 0 039 7500 ohm Nickel 0 00618 0 077 Der
53. stem throughput from analog input to backplane is a function of e the configured A D filter first notch frequency Seg page iot e the number of channels actually configured for connection to specific sensor The A D converter which converts channel 0 through 7 analog data to a digital word provides a programmable first notch filter You can set the position of the first notch of this filter during module configuration The selection influences the A D output data rate thus affecting system throughput The number of channels included in each input scan also affects system throughput Mapping Data into the FLEX I O RTD analog module data table mapping is shown below Image Table RTD Input Analog Module 1794 IR8 Image Table Mapping Module Image Reserved Input Data Channel 0 Input Data Channel 1 ieee Input Data Channel 2 Input Size iio ak Word Input Data Channel 3 i kaa Input Data Channel 4 Input Data Channel 5 Input Data Channel 6 Input Data Channel 7 Calibration Status RTD Type 0 to 4 Words RTD Type Output Size Publication 1794 6 5 4 5 4 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter Memory Map of RTD Analog Input Module Image Table 1794 IR8 Decimal Bit 15 14 13 12 11 10 09 08 06 05 04 03 02 00 Octal Bit 17 16 15 EN 13 12 11 10 07 06 05 003 02 0 00 Read Word 1 Reserved 2 Channel 0 Input Data
54. to possible injury to people or damage to equipment under specific circumstances ATTENTION Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attention helps you e identify a hazard avoid the hazard recognize the consequences Important Identifies information that is especially important for successful application and understanding of the product Important We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss DeviceNet DeviceNetManager and RediSTATION are trademarks of Allen Bradley Company Inc PLC PLC 2 PLC 3 and 5 are registered trademarks of Allen Bradley Company Inc Windows is a trademark of Microsoft Microsoft is a registered trademark of Microsoft IBM is a registered trademark of International Business Machines Incorporated All other brand and product names are trademarks or registered trademarks of their respective companies Using This Preface Objectives Audience peak bx ve eek oka Pe ieee ee ek Vocabulary What This Manual Contains Conventions For Additional Information Overview of FLEX I O and your
55. tputs To Zero amp Run gt Fault Reset Outputs To Zero E Idle gt Fault Outputs Remain in Idle State 3 Module Fault Zero inputs H Load File Selected If you attempt to close without saving your configuration information by clicking on the button you will be prompted to save the changes DeviceNet Manager Save Configuration to File Before Exiting Publication 1794 6 5 4 Appendix A Specifications Specifications 1794 IR8 RTD Input Module Number of Inputs 8 Channels Module Location Cat No 1794 TB2 TB3 TB3T Terminal Base Unit Signal Input Range 1 to 433 ohms Sensors Supported Resistance 100 ohm Pt o 0 00385 Euro 200 to 870 C 100 ohm Pt 0 003916 U S 200 to 630 C 200 ohm Pt 0 00385 Euro 200 to 630 C 500 ohm Pt 0 00385 Euro 200 to 630 C 100 ohm Nickel o 0 00618 60 to 250 C 120 ohm Nickel o 0 00672 60 to 250 C 200 ohm Nickel 0 00618 60 to 250 C 500 ohm Nickel 0 00618 60 to 250 C 10 ohm Copper o 0 00427 200 to 260 C Resolution 16 bits across 435 ohms Data Format 16 bit 2 s complement or offset binary unipolar Normal Mode Noise Rejection 60db 60Hz for A D filter cutoff 10Hz Accuracy without calibration at Normal mode 0 05 Full Scale maximum low humidity Enhanced mode 0 01 Full Scale typical Common Mode Rejection 120db 9 60Hz 100db 50Hz with AJD filter cutoff 10Hz
56. ype RTD 2 Type RTD 1 Type RTD 0 Type 2 RTD 7 Type RTD 6 Type RTD 5 Type RTD 4 Type Where Enh Enhanced MDT Module Data Type Dec Bits Word Octal Bits Read Word 0 00 15 00 17 Read Word 1 00 15 00 17 Read Word 2 00 15 00 17 Read Word 3 00 15 00 17 Read Word 4 00 15 00 17 Read Word 5 00 15 00 17 Read Word 6 00 15 00 17 Read Word 7 00 15 00 17 Read Word 8 00 15 00 17 Read Word 9 00 07 08 15 10 17 Read Word 10 02 03 04 06 07 08 10 09 11 10 12 11 15 13 17 Publication 1794 6 5 4 Word Bit Descriptions for the 1794 IR8 RTD Analog Input Module Description Reserved Channel 0 Input data Channel 1 Input data Channel 2 Input data Channel 3 Input data Channel 4 Input data Channel 5 Input data Channel 6 Input data Channel 7 Input data Underrange bits these bits are set if the input signal is below the input channel s minimum range Overrange bits these bits are set if 1 the input signal is above the input channel s maximum range or 2 an open detector is detected Not used set to 0 Reserved Powerup bit this bit is set 1 until configuration data is received by the module Critical Error bits If these bits are anything other than all zeroes return the module to the factory for repair Unused set to 0 Calibration Range bit set to 1 if a reference signal is out of range during calibration Calibration Done bit set to 1 after an initiated cali

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