Rockwell Automation Publication 1756-RM011A-EN-P - June 2016 27
Chapter 5
Diagnostics
Status Indicators
All 8-channel modules have Status (ST) and Fault (FLT) indicators on the
front of the module that have no equivalent on the 6-channel modules. All
8-channel ST and FLT indicators operate according to the description in the
8-channel module manual, even when in Emulation mode. Also in Emulation
mode, only ST, and FLT indicators 0…5 are active, indicators 6…7 are always
off.
Status Indicators for the
1756-IF8I Module
The following table describes the status indicators.
Topic Page
Status Indicators 27
Status Indicators for the 1756-IF8I Module 27
Status Indicators for the 1756-IRT8I Module 29
Status Indicators for the 1756-OF8I Module 29
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. Possible causes of the fault include:
– Underrange/overrange detection
– Triggered process alarm
– Triggered rate alarm
– 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.
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