118 • Programmable Field Bus Controller 750-833
LED
Signaling
WAGO-I/O-SYSTEM
750
Bus System
3.11.6 Supply Voltage Status
There are two green LED in the controller supply section. The left upper
LED (A) indicates the status of the system supply. The right upper LED (C) or
the left lower LED (B) signals the supply to the field side (the LED position
depends on manufacturer).
LED A
Meaning
Remedy
green
System supply is ok
off
System supply failed
Check the power supply (24 V and 0 V)
LED C
or B
Meaning
Remedy
green
Field supply is ok
off
Field supply failed
Check the power supply (24 V and 0 V)