Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules - Manual (Page 86)

86 Rockwell Automation Publication 1756-UM540A-EN-P - May 2014
Chapter 4 1756-IRT8I Combined Temperature-sensing Isolated Analog Module
Cold Junction Offset Option
The Cold Junction Offset box on the Module Properties Configuration Tab lets
you make module-wide adjustments to cold junction compensation values. If you
know that your cold junction compensation values are consistently inaccurate by
some level, for example, 1.2 °C, type the value into the box to account for this
inaccuracy.
IMPORTANT Consider the following before disabling cold junction compensation:
• We recommend that you do not disable the cold junction disable option.
Typically, this option is used only in systems that have no thermoelectric
effect, such as test equipment in a controlled lab.
• The Cold Junction Disable box on the Module Properties Configuration tab
disables cold junction compensation on all module channels.
IMPORTANT Cold Junction temperatures are always reported as Celsius temperature units,
and, offset values are always set in Celsius temperature units.
You cannot change the temperature units.
Type offset value.