Rockwell Automation Allen-Bradley ControlNet 1734-ACNR User Manual page 127

If The OK With This
Indicator Is Module Status
Display
Steady red
Msg scrolls
BPA# ERR
BPRX ERR
BPIC
ERR
CNIC
ERR
DUPL NODE
RACK ERR
STOP
WAIT RM
It Means
(1) Module's network address is set to 00, an
invalid ControlNet address, or 99, an invalid
ControlNet address if you are using redundant
control. See footnote at end of table.
Module detected a different slot address from
that latched in at power-up. Excessive noise on
the backplane causes this error.
Too many CRC errors being generated by the
multicast backplane receiver, so the backplane
multicast receivers have been shut off.
Hardware fault within the module.
For a redundant system this may be a temporary
condition during chassis switchover. Otherwise,
the module's network address is the same as
another module's on the link.
Cannot read backplane EEPROM, or rack/slot
address incorrect
CNB commanded to stop functioning by the
redundancy module. This occurs when a
non-redundancy compliant CNB is placed into a
redundant secondary chassis.
CNB waiting for the redundancy module to
complete power-up.
Troubleshoot Your ControlNet Communication Modules
Take This Action
1. Optional – Turn chassis power supply
off.
2. Remove the module from the chassis.
3. Set the network address switches to a
unique address (01-99, or 01-98 if
redundant control)
4. Install the module in the chassis.
5. If off, turn chassis power supply on.
Replace the chassis or module.
Replace the module.
Replace the module.
For redundant systems only. wait 10 seconds; if
the condition persists, do the following steps:
1. Turn chassis power supply off.
(Optional)
2. Remove the module from the chassis.
3. Set the network address switches to a
unique address (01-99).
4. Install the module in the chassis.
5. If off, turn chassis power supply on.
Replace the chassis.
Remove non-redundancy compliant CNB from
redundant secondary chassis and replace with
redundancy compliant CNB.
None required.
Publication CNET-UM001C-EN-P - November 2005
8-7