Allen-Bradley 193-DNENCAT, User Manual, Page: 89 / 112

Rockwell Automation Publication 193-UM014C-EN-P - August 2016 89
Troubleshooting Chapter 10
DeviceNet
Network Status
(NS)
None —
The EtherNet/IP communication
auxiliary module is not receiving
power.
Check the DeviceNet cable
connections and verify that 24V
DC exists between the red and
black terminals.
Green, Red,
Not Illuminated Flashing
(once)
Normal
This is a normal power-up
sequence.
Green Flashing
The EtherNet/IP communication
auxiliary module is not
configured to scan any
DeviceNet slave devices.
Check the DeviceNet scan list for
the correct scanner
configuration.
Green Solid
Normal operating state and the
EtherNet/IP communication
auxiliary module is scanning
DeviceNet slave devices.
No action is required.
Red Flashing One or more DeviceNet
connections timed out.
Reset the EtherNet/IP
communication auxiliary
module.
Red Solid
Diagnostics test failed on power-
up/reset. An internal fault exists.
Cycle power to the unit. If the
fault still exists, replace the unit.
Duplicate DeviceNet module
address exists. Two modules
cannot have the same address.
Change the MAC address to a
valid setting and reset the
device.
A fatal communication error
occurred.
Check DeviceNet media for
proper installation.
Module Status
None —
The EtherNet/IP communication
auxiliary module is not receiving
power.
Check the DeviceNet cable
connections and verify that 24V
DC exists between the red and
black terminals.
Green, Red,
Not Illuminated Flashing
(once)
Normal
This is a normal power-up
sequence.
Green Flashing
The EtherNet/IP communication
auxiliary module is properly
scanning DeviceNet slave
devices, but it is not being
scanned by the EtherNet/IP
master.
Check the Ethernet scan list for
the correct scanner
configuration.
Green Solid
Normal operating state, the
EtherNet/IP communication
auxiliary module is scanning
DeviceNet slave devices, and is
allocated to its master.
No action is required.
Red Flashing
One or more DeviceNet or
EtherNet/IP connections timed
out.
Reset the EtherNet/IP
communication auxiliary
module.
The EtherNet/IP communication
auxiliary module is not
configured to scan any
DeviceNet slave devices.
Check the DeviceNet scan list for
correct scanner configuration.
Red Solid
Diagnostics test failed on power-
up/reset.
Cycle power to the device. If the
fault still exists, replace the
device.
Link
Link (front)
Link (back)
None —
The EtherNet/IP communication
auxiliary module is not properly
connected to an Ethernet
network.
Check the Ethernet cabling to
make sure it is properly installed.
Green Flashing The Ethernet network is properly
connected.
No action is required.
Green Solid
Communications are occurring
on the Ethernet network.
No action is required.
Status LED Color State Possible Cause Corrective Action