Table 103: Blink Code Table For The I/O Led Signaling, Error Code 4 - WAGO I/O-SYSTEM 750 Manual

128 Diagnostics

Table 103: Blink Code Table for the I/O LED Signaling, Error Code 4

Error code 4: "Physical error, local 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)
Manual
Version 1.2.1
750-354/000-001 EtherCAT® Fieldbus Coupler, ID Switch
Error description Solution
1.
2.
3.
4.
- Is no error argument indicated by the I/O LED? -
5.
- Is an error argument indicated by the I/O LED? -
5.
6.
Local bus data
7.
transmission error or
8.
interruption of the
local bus at
the fieldbus coupler
9.
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 and
Interruption of the
local bus 1.
th
behind the n bus 2.
module with process 3.
data
Turn off the power supply to the node.
Plug in an end module behind the fieldbus coupler.
Turn the power supply on.
Observe the error argument signaled.
Replace the fieldbus coupler.
Identify the faulty I/O module by turning off the power
supply.
Plug the end module into the middle of the node.
Turn the power supply on again.
- LED continues to flash? -
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).
Turn the power supply on again.
the step size until the faulty I/O module is detected.
the LED is flashing, either the I/O module or fieldbus
coupler is defective. Replace the defective component.
Turn off the power supply to the node.
Replace the (n+1) I/O module containing process data.
Turn the power supply on.
WAGO-I/O-SYSTEM 750