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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Appendix B 1715-IB16D Digital Input Module Diagnostics
When you calibrate output modules, you use a digital multimeter (DMM) to
measure the signal that the module is sending out.
The calibration drift process can impair control.
When you begin the calibration check process, if a real-time connection is
open, the module points you are calibrating can fault. We recommend that you
change your controller to Program mode before beginning calibration.
The two general functions in the calibration check process are as follows:
•
Attaching/generating a Low Reference Signal
•
Attaching/generating a High Reference Signal
Verify that the physical values correspond to the module read/produced values
within desired tolerances. If not, consider replacement of the affected module.
IMPORTANT
Before beginning calibration checking, do the following:
• Stop the process your output module is controlling or your input
module is tracking.
• Disconnect input signals and connect test signals. Any control
that depends on the normal input signals does not have them
during the calibration check process.
• Disconnect output signals and connect a suitable measuring
instrument. Any control that depends on the outputs from this
module does not have them during the calibration check process.
• Make sure the equipment, a Multimeter, is calibrated.
IMPORTANT
The 1715-IF16 and 1715-OF8 modules can be operated with
multiple ranges. Verify that the appropriate Output Range or
Input Range is selected before continuing with the calibration
check procedure.
