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Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules  User Manual

Page 78

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78

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014

Chapter 4

1756-IRT8I Combined Temperature-sensing Isolated Analog Module

Sensor Type Temperature Limits

Sensor type temperature limits are determined by your choice of Input Type,
Sensor Type, and Temperature Units.

For example, you can configure a channel with the following parameters:

Input Type = RTD (Ohms)

Sensor Type = 100 Ohm PT 385

Temperature Units = Celsius

In this case, the Scaling parameters are set as follows:

Low Signal = -200.0000 °C
Low Engineering = -200.0000

High Signal = 870.0000 °C
High Engineering = 870.0000

IMPORTANT

When you make the configuration choices listed previously, the Scaling
parameters are automatically set
on the Configuration tab of the Module
Properties dialog box and cannot be changed in the software.

The Low Signal value equals the Low Engineering value. The High Signal value
equals the High Engineering value.