Allen-Bradley 1734-IM4 User Manual page 122

124 Calibrate Your Analog Modules
Rockwell Automation Publication 1734-UM001E-EN-P - July 2013
11. From the Device Parameters dialog, click the Download to Device button.
The status indicator for the channel being calibrated blinks.
12. Set the current source to 20 mA.
13. Click Accept High Calibration.
14. Click the Download to Device button.
Calibration is complete as soon as High and Low calibration for the
selected channels are done successfully.
15. Repeat above steps to calibrate the other channel, noting that both high
and low inputs must be accepted in order for the module to finish
calibration.
Calibration is now complete. If the module does not accept calibration
(status indicator is still blinking), click Abort Calibration and start over.