Rockwell Automation 2LW3000 LonWorks Communication Option Module for VTAC 7 Drives - Manual (Page 73)

Troubleshooting the LonWorks Module and Network 9-3
9.1.4 Communication Module Status LED
9.2 Error Handling
The LonWorks module handles errors in the following manner:
• If nciRcvHrtBt > 0, and heartbeats are not received within nciRcvHrtBt time, then
communication with the LonWorks network is considered down. This will result in a
net comm fault.
• The module responds as specified in Comm Loss Response.
• If the module does not get access to DP RAM in 250 ms, the comm_failure bit will
be set in the network output SNVT_obj_status nvoObjSatus. This will also result in a
net comm fault (force write in DP RAM without waiting on VTAC 7 drive).
Internal VTAC 7 drive error codes are described in the drive register map (fault latch
bits word 1 and fault latch bits word 2).
Table 9.4 – Communication Module Status LED: State Definitions
LED State Cause Corrective Action
Solid green The module has been initiated
correctly and is functioning
properly. None required.
Flashing red Software error. Restart the module.
Solid red A hardware error has occurred. Cycle power to the drive and
module. If cycling power does not
correct the problem, replace the
module.
Error
AnyBus Module
Status LED Corrective Action
Drive cannot be fully
accessed. Not all drive
drop registers can be
accessed. Drop0 Reg 13
is not equal to 3 or
Drop0 Reg12 = 0. Red 4 Hz Check the drive. Check setting of
P.061.
Heartbeat timeout. Red 2 Hz Check connections, cables, and
setup of send/rcv hrtbt
parameters. Recoverable fault
use RQ_CLEAR_ALARM.
Node offline. Red 1 Hz Set node online.