Rockwell Automation 1785-ENET USER MANUAL PLC-5 ETHERNET INTERFACE - Manual (Page 32)

1785-6.5.19 November 1998
4-2 Communicating via the Interface Module
Monitor the series of blinks to determine the fault code. Count the
first and last series of slow blinks, disregarding the series of fast
blinks between the slow series.
Important: The interface module will flash the indicator lights as
shown in Appendix D. The processor may fault even though the
interface module does not.
The table below lists all major processor fault codes pertinent to a
sidecar module, such as the Ethernet interface module. For a
complete list of fault codes for PLC-5 processors, see the Enhanced
and Ethernet PLC-5 Programmable Controllers User Manual,
publication 1785-6.5.12.
Indicator Color Description Probable Cause Recommended Action
STAT Solid red Critical hardware fault Interface module requires
internal repair Contact your local
Allen-Bradley distributor
Blinking red Hardware or software fault
(detected and reported via a
code) Fault-code dependent See Appendix D
Off Ethernet interface is functioning
properly but it is not attached to
an active Ethernet network Normal operation Attach the processor and
interface module to an
active Ethernet network
Green Ethernet channel 3A is
functioning properly and has
detected that it is connected to an
active Ethernet network Normal operation No action required
XMIT Green Lights (green) briefly when the
Ethernet port is transmitting a
packet. It does not indicate
whether or not the Ethernet
Port is receiving a packet.