Table 61: Blink Code Table For The I/O Led Signaling, Error Code 4; Table 62: Blink Code Table For The I/O Led Signaling, Error Code 5 - WAGO -I/O-SYSTEM 750 Manual

122 Diagnostics

Table 61: Blink code table for the I/O LED signaling, error code 4

Error code 4: "Physical error, internal bus"
Error
Argument
-
n*
* 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)

Table 62: Blink code table for the I/O LED signaling, error code 5

Error code 5: "Initialization error, internal bus"
Error
Argument
n*
* 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)
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Error Description Solution
1. Turn off the power supply to the node.
2. Plug in an end module behind the fieldbus coupler.
3. Turn the power supply on.
4. Observe the error argument signaled.
- Is no error argument indicated by the I/O LED? -
5. Replace the fieldbus coupler.
- Is an error argument indicated by the I/O LED? -
5. Identify the faulty I/O module by turning off the power
6. Plug the end module into the middle of the node.
Internal bus data
7. Turn the power supply on again.
transmission error or
8. - LED continues to flash? -
interruption of the
internal data bus at
the fieldbus coupler
9. Turn the power supply on again.
10. Repeat the procedure described in step 6 while halving
11. Replace the faulty I/O module.
12. If there is only one I/O module on the fieldbus coupler
Interruption of the
internal data bus 1. Turn off the power supply to the node.
behind the nth I/O 2. Replace the (n+1) I/O module containing process data.
module with process 3. Turn the power supply on.
data
Error Description Solution
Error in register
1. Turn off the power supply to the node.
communication
2. Replace the (n+1) I/O module containing process data.
during internal bus
3. Turn the power supply on.
initialization
750-375 PROFINET IO advanced Fieldbus Coupler
supply.
Turn off the power 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.
and the LED is flashing, either the I/O module or fieldbus
coupler is defective. Replace the defective component.
WAGO-I/O-SYSTEM 750
Manual
Version 1.1.0