WAGO 750-341, Manual, Page: 87 / 246

Fieldbus Coupler 750-341 • 81
LED Display
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
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 Fault description Trouble shooting
1 Overflow of the internal buffer
memory for the inline code 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.
2 I/O module(s) with unsupported
data type 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.
3 Checksum error of the parameter
data Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.
4 Acknowledge Fault when writing
data in the EEPROM Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.
5 Fault when reading out data from
the EEPROM Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.
6 Changed I/O module
configuration determined after
AUTORESET Restart the fieldbus coupler by
turning the power supply off and
on again.
7 Firmware does not run on
existing hardware Turn off the power supply of the
node, exchange fieldbus coupler
and turn the power supply on
again.