Rockwell-automation 1771-IR Series D RTD Input Module User Manual Uživatelský manuál stáhnout pdf (Strana 4)

Using This ManualP–2

Publication 1771Ć6.5.129 - March 2000

Appendices

Appendix C Data Formats Information on BCD, signed magnitude (12-bit) binary, and 2's

complement binary

Appendix D Block Transfer with Mini-PLC-2

and Mini-PLC-2/20

How to use GET-GET instructions for block transfer with Mini-PLC-2

and Mini-PLC-2/20 processors

Appendix E 2 and 4-wire RTD Sensors Shows wiring connections for 2 and 4-wire sensors

Appendix F Differences Between Series A, B,

C and D

Identifies major differences between the series A, B, C, and D of the

RTD module.

Appendix G CSA Hazardous Location

Approval

Certification information for CSA

You can install your input module in any system that uses

Allen–Bradley programmable controllers with block transfer

capability and the 1771 I/O structure.

Contact your nearest Allen–Bradley office for more information

about your programmable controllers.

This input module can be used with any 1771 I/O chassis.

Communication between the discrete analog module and the

processor is bidirectional. The processor block–transfers output data

through the output image table to the module and block–transfers

input data from the module through the input image table. The

module also requires an area in the data table to store the read block

and write block data. I/O image table use is an important factor in

module placement and addressing selection. The module’s data table

use is listed in the following table.

Compatibility and Use of Data Table

Catalog

Number

Use of Data Table

Input Output Read Write

Image Image Block Block

Bits Bits Words Words

Compatibility

Addressing Chassis

1/2 -slot 1-slot 2-slot Series

1771-IR

Series D

8 8 8/9 14/15 Yes Yes Yes A and B

A = Compatible with 1771-A1, A2, A4 chassis.

B = Compatible with 1771-A1B, A2B, A3B, A4B chassis.

Yes = Compatible without restriction

No = Restricted to complementary module placement

You can place your input module in any I/O module slot of the I/O

chassis. You can put:

• two input modules in the same module group

• an input and an output module in the same module group.

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