100
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PROFINET IO 750-340
LED
Indication
WAGO-I/O-SYSTEM
750
PROFINET IO
3.1.9.4
'I/O' LED Error Messages
First blinking sequence: start of error display
Second blinking sequence: error code
Third blinking sequence: error argument
Error code 1: "Hardware and configuration error"
Error argument
Fault Description
Remedy
1
Overflow of the internal buffer
memory for the inline code.
Turn off the supply voltage of the
node, reduce the number of
modules and switch on the supply
voltage again. If the error remains,
replace the buscoupler.
2
I/O module(s) with unknown
data type
Identify the faulty I/O module.
Turn off the power supply. Plug
the end module in the middle of
the node. Turn the power supply
on again.
- If the LED is keeps blinking,
turn off the power supply and plug
the end module in the middle of
the first half of the node (towards
the coupler).
- If the LED does not blink, turn
off the power supply and plug 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 (while
halving the step size) until the
faulty I/O module is detected.
Replace the faulty I/O module.
Ask for a buscoupler firmware
update.
3
Invalid check sum in the
parameter area of the
buscoupler..
Switch off the supply voltage of
the node, replace the buscoupler
and switch on again.
4
Fault when writing in the serial
EEPROM.
Switch off the supply voltage of
the node, replace the buscoupler
and switch on again.
5
Fault when reading the serial
EEPROM
Switch off the supply voltage of
the node, replace the buscoupler
and switch on again.
6
Changed I/O module
configuration found after
AUTORESET.
Restart the coupler by turning the
supply voltage off and on again.
7 Invalid
hardware-firmware
combination.
Switch off the supply voltage of
the node, replace the buscoupler
and switch on again.
8
Timeout during serial EEPROM
access.
Switch off the supply voltage of
the node, replace the buscoupler
and switch on again.
