Rockwell Automation 1756-CN2R ControlLogix ControlNet Interface Module Series A Installation Instructions - Manual (Page 20)

20 ControlLogix ControlNet Bridge Module
Publication 1756-IN602A-EN-P - November 2005
Module Status Indicator and Display
The Module Status Indicator LED and Module Status Display provide
diagnostic information as summarized in the Diagnostics table.
Diagnostics
LED Display
Cause Recommended Action
Off None Module not communicating due
to a power supply fault or
internal fault. 1. Check the power supply.
2. Check the cable
connectors.
3. Make sure the module is
firmly seated in the
chassis.
4. If the indicator remains
off, replace the module.
Red Msg
scrolls
(1)
Module’s network address is set
to 00, an invalid ControlNet
address. See footnote at end of
table. 1. (Optional, see page 9.)
Turn chassis power
supply off.
2. Remove the module from
the chassis.
3. Set the network address
switches to a unique
address (01 to 99).
4. Install the module in the
chassis.
5. If off, turn chassis power
supply on.
BPA#
ERR Module detected a different slot
address from that latched when
you cycled power. Excessive
noise on the backplane causes
this error. Replace the chassis or module.
BPRX
ERR Too many CRC errors being
generated by the multicast
backplane receiver, so the
backplane multicast receivers
have been shut off. Replace the module.
OK