Rockwell Automation 1395 ControlNet Communication Board - Manual (Page 69)

6–5 Troubleshooting
Publication 1395.5.37 – March, 1999
CNA Board Fault Messages The fault messages produced by the CNA board are:
Message: CN-10-PLC OUT OF RUN MODE
Fault Type: Hard
Cause:
PLC was switched from run mode to another mode.
Action: Check PLC mode switch and I/O control reset, if
condition persists, replace adapter board.
Message: CN-12-CONTROL NET COMM LOSS
Fault Type: Soft/Warning/None
Cause:
Communication Link Broken
Action: Check connections & cable. Check that PLC is
operational.
Message: CN-13-CLASS 1 CLOSE
Fault Type: Soft/Warning/None
Cause:
Scanner Device (PLC) closed the connection to the drive.
This could be due to a timeout condition or due to action
initiated by the Scanner due to programming or possible
error recovery.
Action: Check connections & cable. Check state of the Scanner
Device (PLC). Check programming within the PLC.
Message: CN-14-CLASS 3 CLOSE
Fault Type: Soft/Warning/None
Cause:
Device closed a messaging connection to the drive. This
could be due to a timeout condition or due to action
initiated by the device due to programming or possible
error recovery.
Action: Check connections & cable. Check the state of all devices
that are configured on the network to have a class 3
connection to the drive. Check programming within the
PLC or any other device with a class 3 connection to the
drive.
Message: CN-15-CLASS 1 TIMEOUT
Fault Type: Soft/Warning/None
Cause:
Drive timed out on scheduled control data reception
from the Scanner Device (PLC).
Action: Check connections & cables. Check that PLC is
operational. Check for general errors occurring on the
network. Check that the network was not being
re-configured.