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The ICOM-LED indicates a communication and data exchange between Neu-
ron
ICOM-LED
green
off
3.2.9.3 Node status
LED
IO
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
After overcoming a fault, restart the coupler by cycling the power.
Modular I/O System
®
L
W
ON
ORKS
®
Chip and µC165.
Meaning
Data exchange
No data exchange
Color
Meaning
red /green
The 'I/O' LED indicates the node operation and signals faults occur-
/ orange
ring.
Fieldbus coupler/controller
Review
Trouble shooting
Check bus system integrity
• 87
g012111e
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