WAGO 750 Series Manual page 67

Fault message of the 'I/O'-LED
1 st flash sequence: Start of the Fault message
2 nd flash sequence: Fault code
3 rd flash sequence: Fault argument
Fault code 1: "Hardware and Configuration fault"
Fault argument
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Fault description
- Invalid checksum within the
parameter range of fieldbus
coupler
1 Overflow of the internal buffer
memory for the inline code
2 I/O module(s) with unsupported
data type
3 Unknown program module type
of the flash program memory
4 Fault when writing data within
the flash memory
5 Fault when deleting a flash
sector
6 Changed I/O module
configuration determined after
AUTORESET
Fieldbus coupler 750-342 • 61
LED Display
Trouble shooting
Turn off the power supply of the
node, exchange the bus coupler
and turn the power supply on
again.
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, exchange the bus coupler
and turn the power supply on
again.
Turn off the power supply of the
node, exchange the bus coupler
and turn the power supply on
again.
Turn off the power supply of the
node, exchange the bus coupler
and turn the power supply on
again.
Restart the fieldbus coupler by
turning the power supply off and
on again.