Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules User Manual
Page 85
Rockwell Automation Publication 1756-UM540A-EN-P - May 2014
85
1756-IRT8I Combined Temperature-sensing Isolated Analog Module
Chapter 4
Connecting a Cold Junction Sensor via an Interface Module
The IFMs use an isothermal bar to maintain a steady temperature at all module
terminations. When using the IFM, we recommend that you mount it so that the
black anodized aluminum bar is in the horizontal position.
When using an IFM, do not connect a CJC sensor to the module because it is
built into the IFM. However, you must enable the Remote CJ Compensation
field in the Logix Designer application as shown below.
If you connect a CJS via an IFM, configure the module as shown on the Module
Properties Configuration tab.
Cold Junction Disable Option
You can disable cold junction compensation on your 1756-IRT8I module. Check
Cold Junction Disable to disable compensation as shown below.
Check Remote
CJ Compensation.
Check Cold
Junction Disable