About the Anybus Communicator for Modbus-RTU
1-3
Status LEDs
#
State
Status
1 - Bus Error
Off
Normal operation
Red
Bus error; CRC mismatch >10%
2 - Bus Ready
Off
Not powered
Green
Normal operation (bus ready)
Red
Bus is off line (bus not ready)
3 - Processing
Off
Currently not processing query
Green, flashing
Currently processing query
4 - Switch Status
Off
Normal operation
Red
Invalid configuration switch setting
5 - Subnet Status
a
a. This led turns green when all transactions have been active at least once. This
includes any transactions using “change of state” or “change of state on trigger”. If
a timeout occurs on a transaction, this led will turn red.
Off
Power off
Green, flashing
Initializing and not running
Green
Running
Red
Stopped or subnet error, or timeout
6 - Device Status
Off
Power off
Alternating Red/Green
Invalid or missing configuration
Green
Initializing
Green, flashing
Running
Red, flashing
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