Rockwell Automation Publication 1756-UM540E-EN-P - December 2017 145
Calibrate the ControlLogix Analog I/O Modules Chapter 8
Calibrate Via Profile or Ladder
Your project must be online with the controller to calibrate ControlLogix analog
I/O modules via the software. You can calibrate in the following conditions:
• Via Ladder Logic by using the Output Tags: place the controller in Run
mode-either Remote Run or Run mode.
Use the output tags to calibrate the module by initiating calibration and
providing/recording the low and high calibration reference points.
The input/output range to be calibrated must be what the module is
configured for when the calibration is initiated when calibrating via the
output tags.
We recommend that a special calibration program is used when calibrating
with the output tags to make sure that the channels under calibration are
not being used for active control.
• Via the Module Profile: place the controller in Program mode, either
Remote Program or Program mode or Inhibit the connection from the
controller.
This is required to calibrate the 1756-IR12 or the 1756-IT16 via the
Profile as they are input only modules that do not have a sense of Program
Mode.
These analog modules cannot be calibrated via the Module Profile while in
Run Mode.
Calibrate the Input Modules
Input calibration is a multi-step process. You apply low and high signal references
to the module at different steps in the process.
Calibrate the 1756-IF8I Module Via the Profiles
You can calibrate the 1756-IF8I module for use with the following input types:
• Current (mA)
The module freezes the state of each channel and does not update the
controller with new data until after the calibration ends. This could be
hazardous if active control were attempted during calibration.
Topic Page
Calibrate the 1756-IF8I Module Via the Profiles 145
Calibrate the Temperature-sensing Modules 150
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