1756-RM3 Status Indicators

The initial state of the module is resolving. Wait for the resolution to finish. No action is required.

The module had to shut down after becoming too hot. This is a major nonrecoverable fault with fault code 0x2. To recover from the fault, reset the module.

For more information, see Understand Temperature Monitoring and Fault Behavior.

The module is too hot or too cold. This is a major recoverable fault with fault code 0x5.

For more information, see Understand Temperature Monitoring and Fault Behavior.

The secondary redundancy module is disqualified. Check the type and revision of the secondary partner module.

A duplicate redundancy module exists in the chassis. Remove the duplicate redundancy module.

An error occurred during powerup. Following this error, the module resets and restarts. If the problem persists, provide the error message to Technical Support for further guidance.

The module is using boot firmware (revision 1.xxx) and requires a firmware update.

The module is updating its firmware. Wait for the firmware update to finish. No action is required.

A supported SFP transceiver is detected in the specified channel (1 or 2), and the link is operating normally with no faults.

The SFP transceiver in the specified channel (1 or 2) is disabled.

No SFP transceiver is detected in the specified channel (1 or 2) and the transceiver has not been disabled. Possible causes include the following:

This is a minor recoverable fault. Once the link is detected, the redundancy module clears the fault.

The secondary redundancy module is in the process of locking for update.

The secondary redundancy module is locked for update.

Possible causes include the following:

Possible causes include the following:

The module has a major nonrecoverable fault. Remove and reinsert the module. If module continues to display this message repeatedly after subsequent restarts, try the following:

The module has a major nonrecoverable fault. Save the displayed 9-character fault ID and then remove and reinsert module. For further investigation, provide the fault ID along with the fault log on the microSD™ card to Technical Support. If module continues to display this message repeatedly after subsequent restarts, try the following:

The module in the specified slot (0…16) cannot reliably participate in the redundancy system because it not able to notify the redundancy module of failure. Remove and replace the module in the specified slot.

The redundancy module failed to pass the SysFail test. Remove and replace the redundancy module.

The module is connected to a partner module with another major firmware revision or different major or minor software version.

The module is hot, but not at a critical temperature. This is a minor recoverable fault with fault code 0x6.

For more information, see Understand Temperature Monitoring and Fault Behavior.

Power-up tests successfully completed.

The module is operating as the primary redundancy module. No action is required.

The redundancy system is qualifying the secondary redundancy module. No action is required.

The major and minor firmware revision of the module.

Event logs were lost and the redundancy module is reinitializing the event log instances. The high availability of the module is not impacted, but the module may not be able to propagate events into the RMCT correctly. This message can appear after a redundancy module firmware update or redundancy module replacement. The message disappears in 180 seconds.

The microSD card has a fault. Possible causes include the following:

The microSD card does not have a compatible FAT32 format.

The microSD card has a power fault.

No SFP transceiver is detected in the specified channel (1 or 2). Possible causes include the following:

The message indicates a minor recoverable fault. The redundancy module clears the fault if the transceiver is detected or disabled.

The SFP transceiver in the specified channel (1 or 2) is not supported by Rockwell Automation or the SFP standard is not recognized.

The message indicates a minor recoverable fault. Once the transceiver is removed or disabled, the redundancy module clears the fault.

The SFP transceiver in the specified channel (1 or 2) is faulted.

The message indicates a minor recoverable fault. Once the transceiver is removed or disabled, the redundancy module clears the fault.

The redundancy system is synchronized with a qualified secondary redundancy module. No action is required.

The module is performing power-up tests

One of these conditions exists:

The module is receiving traffic on the port.

The port is active, but not receiving data.

One of these conditions exists:

One of these conditions exists:

When green for approximately 250 ms, red for approximately 250 ms, and then off, the module is performing its power-up testing. The status indicator continues this sequence until the power-up testing is complete.

One of these conditions exists:

The module is ready to communicate with its partner but no connection has been made yet.

The module is communicating with its partner.

When green for approximately 250 ms, red for approximately 250 ms, and then off, the module is performing its power-up testing. The status indicator continues this sequence until the power-up testing is complete.

No power is applied to the module.

One of these conditions exists:

The module is operating normally.

One of these conditions exists:

The module has a major nonrecoverable fault.

When green for approximately 250 ms, red for approximately 250 ms, and then steady green, the module is performing its power-up testing. The status indicator continues this sequence until the power-up testing is complete.