WAGO 750-830 Manual page 127

After elimination of the error, the controller must be restarted by means of
switching the power off and on again.
Tab. 3-24: Signaling of the "I/O" LED
I/O
green
off
red
red flashing
red cyclical flashing
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
BACnet/IP Controller 750-830
Meaning
Data cycle on the internal bus
No data cycle on the internal bus
Controller hardware defect
During run-up: Internal bus initialized
During operation: General internal bus error
Error message for bus module reset and internal error.
This error message is evaluated as an error code and error argu-
ment on the basis of the blink code.
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LED Signaling