Technical data

Feldbus Coupler 750-344 / -345 • 73
LED Indication
WAGO-I/O-SYSTEM 750
INTERBUS
Error
Argument
Error description Solution
Error code 4: data error internal data bus
0 Data error on data bus, data bus
disrupted downstream of coupler.
Switch off the power for the
coupler. Connect the module
downcircuit of the coupler, or
replace the existing coupler and
switch the power back on.
n* (n>0) Data bus disruption downstream of
modules.
Switch off the power for the
coupler. Replace the nth module
and switch power back on.
Error code 5: error in register communication
n* Internal data bus error during
register communication with I/O
modules.
Switch off the power for the
coupler. Replace the nth module
and switch power back on.
* The number of light pulses (n) indicates the position of the I/O module. I/O modules
without data are not counted (e.g. supply modules without diagnostics).
Example: The 13th module is removed
1. The "I/O" LED starts the error display with the first blinking sequence (approx. 10
Hz).
2. After the first break, the second blinking sequence starts (approx. 1 Hz). The I/O LED
blinks four times, thus indicating error code 4 (data error internal bus).
3. After the second break, the third blink sequence starts. The I/O LED blinks twelve
times. Error argument 12 means that the internal bus is disrupted behind the 12th I/O
module.