Manual

7-2 Troubleshooting
Understanding the COMM
Status Indicator
The COMM status indicator provides status information on the DeviceNet
option.
Important:When power is first applied to the DeviceNet option, the
COMM status indicator flashes green for 1/4 second, red for
1/4 second, and then goes blank while the communication
module finishes its initialization.
Color State What It Means: What To Do:
None The option is not receiving power from
the network.
• Check DeviceNet power and cable
connections and the power
connection on the DeviceNet
terminal block.
Red Solid Diagnostics test failed on power-up/
reset. Internal fault exists.
• Cycle power to the 1329I unit and
network.
• If the fault still exists, return the
option.
Duplicate DeviceNet node address.
Two nodes cannot have the same
address.
• Reset DIP switches 1 through 6 on
the DeviceNet option using a
unique address and then cycle
power.
• If DIP switches 7 and 8 on the
DeviceNet option are both set to
ON, change the value of P103 -
[NV MAC ID] to a unique address
and then cycle power.
Invalid data rate.
• Reset DIP switches 7 and 8 on the
DeviceNet option to a valid data
rate and the cycle power.
• If DIP switches 7 and 8 on the
DeviceNet option are both set to
ON, change the value of P104 -
[NV Baud Rate] to a valid data rate
and then cycle power.
Red Flashing I/O connection timed out. Reset the DeviceNet master device.
Green Solid Normal operating state and device is
allocated to a master.
No action required.
Green Flashing Device is online but not allocated to a
master.
Verify that the DeviceNet master has
the correct configuration information for
the DeviceNet option (node address,
input assembly, and output assembly).