MKS P9B, Instruction Manual, Page: 97 / 112

Troubleshooting Chart Chapter Eight: Troubleshooting
87
- Network status LED
Green Link OK, On-line, Connected The device in on-line and has
connection in the established state.
- For a Group 2 only device it means
that this device is not allocated to a
master.
Flashing Green On-line, Not Connected Device is on-line but has no
connection in the established state.
- The device has passed The
Dup_MAC_ID test, is on-line, but has
no established connections to other
nodes.
- For a Group 2 only device it means
that this device is not allocated to a
master.
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