Fieldbus coupler/controller
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Review
Modular I/O System
L
ON
W
ORKS
®
The ICOM-LED indicates a communication and data exchange between Neu-
ron
®
Chip and µC165.
ICOM-LED Meaning
Trouble shooting
green Data
exchange
off
No data exchange
Check bus system integrity
3.2.9.3 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 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.
Fig. 3-15: Signalling the LED's node status
g012111e
After overcoming a fault, restart the coupler by cycling the power.