Node Status - 'I/O' Led Blinking Code - WAGO -I/O-SYSTEM 750 Technical Description, Installation And Configuration

98 • PROFINET IO 750-340
LED Indication
3.1.9.3

Node Status - 'I/O' LED Blinking Code

The communication status via internal bus is indicated via the lower "I/O"
LED.
LED
I/O
Green
Red
Red
After the power is turned on, the coupler starts up. The red 'I/O' LED blinks.
After a trouble-free start-up the 'I/O' LED is green.
In the event of a failure the 'I/O' LED keeps blinking.
Detailed error messages are indicated by means of blinking codes. An error is
indicated cyclically by up to 3 blinking sequences.
• The error display starts with the first blinking sequence (approx. 10 Hz).
• The second flash sequence appears after an interval (approx. 1 Hz ). The
• After another break, the third blinking sequence starts (approx. 1 Hz). The
Significance
Fieldbus coupler operates correctly
a) At fieldbus coupler start-up:
Initialization of internal bus,
start-up is indicated by fast blinking
for approx. 1-2 seconds
b) After fieldbus coupler start-up:
Internal bus errors are indicated
by up to three successive blinking
sequences. Between the sequences
are short intervals.
number of light pulses indicates the Error Code.
number of light pulses indicates the Error Argument.
Remedy
Analyze error message (error
code and error argument)
WAGO-I/O-SYSTEM 750
PROFINET IO