Fault Message Of The 'I/O' Led - WAGO 750 Series Manual

I/O
green
off
red
red flashing
red cyclic
flashing

Fault message of the 'I/O' LED

st
1
nd
2
rd
3
Fault code 1: " Hardware and configuration fault "
Fault argument
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Meaning
Data cycle on the internal bus
No data cycle on the internal bus
Coupler hardware defective
a) During startup of fieldbus controller: Internal bus being initialized,
b) After startup of fieldbus controller: General internal bus fault
Fault message in case of an internal bus reset and an internal error.
This fault message is indicated by an error code of three consecutive
flashing sequences. There is a short pause between each sequential
flash.
blink sequence: Start of the Fault message
blink sequence: Fault code
blink sequence: Fault argument
Fault description
1 Overflow of the internal buffer
memory for the inline code
2 /O module(s) with unsupported
data type
3 Invalid fieldbus
coupler/controller parameter
checksum
Fieldbus Controller 750-841
LED Display
Trouble shooting
Turn off the power supply of the
node, reduce number of I/O
modules and turn the power supply
on again. If the error still exists,
exchange the bus coupler.
Detect faulty I/O module as
follows: turn off the power supply.
Place the end module in the middle
of the fieldbus node. Turn the
power supply on again.
– If the LED is still blinking, turn
off the power supply and place the
end module in the middle of the
first half of the node (towards the
coupler).
– If the LED doesn't blink, turn off
the power supply and place the end
module in the middle of the second
half of the node (away from the
coupler).
Turn the power supply on again.
Repeat this procedure until the
faulty I/O module is detected.
Replace the faulty I/O module.
Ask about a firmware update for
the fieldbus coupler.
Turn off the power supply of the
node, reduce number of I/O
modules and turn the power supply
on again
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