142 Diagnostics
WAGO-I/O-SYSTEM 750
750-363/0040-0000 FC EtherNet/IP G4 ECO XTR
Manual
Version 1.0.0
Table 61: Blink Code Table for the I/O LED Signaling, Error Code 3
Error Code 3: „Protocoll error, local bus“
Error
Argument
Error Description
Solution
-
Local bus
communication
defective, incorrect
module not
identifiable
-- Are there power supply modules with the bus power supply
(750-613) in the node? ---
1. Check that these I/O modules are supplied correctly with
power.
2. Determine this by the state of the associated status LEDs.
--- Are all I/O modules connected correctly or are there
any 750-613 I/O modules in the node? ---
3. Determine the faulty I/O module. First turn off the power
supply of the node.
4. Plug the end module into the middle of the node.
5. Turn on again the power supply of the node.
6. - LED continues to flash? -
Turn off the power supply of the node and plug the end
module into the middle of the first half of the node (toward
the head station).
- LED not flashing? -
Turn off the power supply of the node and plug the end
module into the middle of the second half of the node
(away from the head station).
7. Turn on again the power supply of the node.
8. Repeat the procedure described in step 4 while halving
the step size until the faulty I/O module is detected.
9. Replace the faulty I/O module.
10. If there is only one I/O module left on the head station and
the LED is flashing, either this I/O module or the head
station is defective.
11. Replace the faulty component.