28 Rockwell Automation Publication 1756-RM011A-EN-P - June 2016
Chapter 5 Diagnostics
Status Indicators for the
1756-IRT8I Module
The following table describes the status indicators.
Status Indicators for the
1756-OF8I Module
The following table describes the status indicators.
Indicator Status Description
OK Steady green The module is in a normal operating state in Run mode.
Flashing green The module passed internal diagnostics and is not actively controlled or
the connection is open and the controller is in Program mode.
Flashing red Previously established communication has timed out.
Steady red Replace the module.
ST Steady yellow The channel is operating as expected.
Flashing yellow The channel is being calibrated.
Off The channel is not in use or is faulted.
FLT Off The channel is operating as expected.
Steady red • The channel is faulted. Some possible causes of the fault include:
– Underrange/overrange detection
– Wire off detection
–Calibration fault
Flashing red One of the following:
• The channel is faulted. See the previous row for more information
about faults.
• The channel is being calibrated.
Indicator Status Description
OK Steady green The module is in a normal operating state in Run mode.
Flashing green The module passed internal diagnostics and is not actively controlled or
the connection is open and the controller is in Program mode.
Flashing red Previously established communication has timed out.
Steady red Replace the module.
ST Steady yellow The channel is operating as expected.
Flashing yellow The channel is being calibrated.
Off The channel is not in use or is faulted.
FLT Off The channel is operating as expected.
Steady red • The channel is faulted. Some possible causes of the fault include:
– Triggered clamp alarm
– Wire off detection
– Calibration fault
Flashing red The channel is faulted. See the previous row for more information
about faults.
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