Table 60: Blink Code Table For The I/O Led Signaling, Error Code 3 - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-375 PROFINET IO advanced Fieldbus Coupler

Table 60: Blink code table for the I/O LED signaling, error code 3

Error code 3: "Protocol error, internal bus"
Error
Argument
-
Manual
Version 1.1.0
Error Description Solution
- Are passive power supply modules (750-613) located in the
1. Check that these modules are supplied correctly with
2. Determine this by the state of the associated status LEDs.
- Are all modules connected correctly or are there any
1. Determine the faulty I/O module by turning off the power
Internal data bus 2. Plug the end module into the middle of the node.
communication is 3. Turn the power supply on again.
faulty, defective 4. - LED continues to flash? -
module cannot be
identified.
5. Turn the power supply on again.
6. Repeat the procedure described in step 4 while halving
7. Replace the faulty I/O module.
8. Inquire about a firmware update for the fieldbus coupler.
node? -
power.
750-613 Modules in the node? -
supply.
Turn off the power supply and plug the end module into
the middle of the first half of the node (toward the
fieldbus coupler).
- LED not flashing? -
Turn off the power and plug the end module into the
middle of the second half of the node (away from the
fieldbus coupler).
the step size until the faulty I/O module is detected.
Diagnostics 121