Troubleshooting Chart Chapter Eight: Troubleshooting
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Red Critical Link Failure Failed communication device. The
device has detected an error that has
rendered it incapable of
communicating on the network
(Duplicate MAC ID, or Bus-off)
Flashing Red Connection Time-Out One or more I/O Connections are in
the Timed-Out state.
Flashing Red & Green Communication Faulted and
Received an Identify Comm
Fault Request - Long Protocol
A specific Communication Faulted
device. The device has detected a
Network Access error and is in the
Communication Faulted state. The
device has subsequently received
and accepted an Identify
Communication Faulted Request -
Long Protocol message.
Off Not Powered/Not On-Line Device is not on-line
- The device has not completed The
Dup_MAC-ID test yet
- The device may not be powered,
look at Module Status LED.
- DeviceNet Module
Status Indicator
Green Device operational The device is operating in a normal
condition
Flashing Green Device in Standby (The Device
Needs Commissioning)
The device needs commisioning due
to configuration missing, incomplete
or incorrect.
Red Unrecoverable Fault The device has an unrecoverable
fault; may need replacing.
Flashing Red Minor Fault Recoverable Fault
Flashing Red & Green Device Self Testing The Device is in Self Test.
Reference the Identity Object in
Volume II for Device states.
Off No power There is no power applied to the
device
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