Fieldbus Coupler/Controller • 57
Fieldbus Coupler 750-306
WAGO-I/O-SYSTEM 750
DeviceNet
3.1.8.1 Node Status
LED
Color
Meaning
IO
red /green
/ orange
The 'I/O' LED indicates the node operation and signals faults occur-
ring.
The Coupler starts after switching on the supply voltage. The "I/O" LED
flashes red. Following an error free start up, the "I/O" LED changes to a green,
steady light.
In the case of a fault the "I/O" LED continues blinking red. The fault is cycli-
cally displayed with the blink code.
“I/O”-LED is blinking
Test o.k.?
No
Yes
“I/O”-LED is shining
ready for operation
2nd break
1st break
“I/O” LED
1st flash sequence
(Introduction of the
error indication)
“I/O” LED
2nd flash sequence
Error code
(Number of flash cycles)
“I/O” LED
3rd flash sequence
Error argument
(Number of flash cycles)
Coupler/Controller starts up
Switching on
the power supply
Fig. 3-19: Signalling the LED's node status
g012111e
After overcoming a fault, restart the Coupler by cycling the power.
I/O
Meaning
green
Data cycle on the internal bus
off
No data cycle on the internal bus
red
Coupler hardware defective
red
blinks
When starting: internal bus is initialized
During operation: general internal bus fault
red
blinks cyclically
Fault message during internal bus reset and internal fault:
