Rockwell Automation 1771ACN/B_1771ACNR/B,D17716.5.123 U.MNL CONTROLNET ADAPTER - Manual (Page 44)

Troubleshooting 5–2
Publication 1771-6.5.123 – May 1996
OK Indicator and Display Mnemonics
OK Indicator
Display
Mnemonic
NET
SS Descr n Pr a le ause Rec en e Ac n
OK
Red/
Green
STATUS
T
ADDRESS Description Probable Cause Recommended Action
Off
Off
None Module not communicating
Power supply fault
Check power supply, cable
connectors, and seat adapter firmly
in chassis.
Defective adapter Contact Allen-Bradley service.
POST Adapter is running Power On Self Test None None
CODE
UPDT
Firmware update mode.
Adapter firmware is being
updated via A-B Flash Update
Utility.
None
Blinking Red
POST
RSET
Module failed Power On Self Test
RAM or FLASH test failed.
Processor fault or watchdog
timeout.
Push the reset pushbutton on the
front of the module.
A#00
ERR
Illegal ControlNet address. Network address set to 00.
Power down the adapter and change
the network address switches.
MOD
ERR
I/O module placement error.
Incorrect I/O module density for
addressing mode used. Place I/O module in correct slot in
chassis.
RACK
ERR
Illegal backplane switch settings. Illegal addressing mode selected.
Power down the adapter and change
the backplane switches.
PRL
Adapter in processor restart lockout
mode. (Adapter to processor link is
normal.) Processor restart lockout switch
on chassis backplane in on
position.
Depress reset button on module to
clear lockout feature, or cycle power.
SHRT
BP
Communication on link. Excessive
noise on backplane or possible shorted
backplane
I/O module or chassis backplane
bad. Replace module or chassis as
necessary.
DUPL
NODE
Duplicate node.
Another adapter with the same
ControlNet address is on the link.
Power down the adapter and change
the network address switches to
correct node.
SW
ERR
Switch error.
Network address switches have
been changed since module
powerup. Set network address switches to
correct address and cycle power to
the adapter.
Red
RPLC Fatal Power On Self Test failure.
RAM or FLASH test failed.
Processor fault or watchdog
timeout.
Contact Allen-Bradley service.
None Hardware fault. Defective hardware.
Blinking Green
INIT Requires ControlNet configuration.
No communication with
ControlNet Configuration
Manager node.
Verify Configuration Manager node is
operating.
IDLE Processor not actively controlling I/O. Adapter not mapped.
Verify mapping of adapter in
processor.
NET
ERR
Nework error.
Cable error or no other nodes on
network.
Verify network cabling.