Table 236: Error Code 3, Explanation Of Blink Codes And Procedures For - WAGO 750-8207 Manual

WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
Table 236: Error Code 3, Explanation of Blink Codes and Procedures for Troubleshooting
Error
Argument
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Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
Cause
Internal data bus
communication error;
defective I/O module
cannot be identified
Solution
If a power supply module (e.g., 750-602)
is connected to the controller, ensure
that this module functions properly (see
Section "LED Signaling"). If the supply
module does not exhibit any errors/faults,
the I/O module is defective. Identify the
defective I/O module as follows:
- Switch off the power supply.
- Place the end module in the middle
of the I/O modules connected to the
system.
- Switch the power back on.
- If the I/O LED continues to flash red
switch off the power supply again
and place the end module in the
middle of the first half of the I/O
modules (toward the controller).
If only one I/O module is left and the LED
continues to flash, either this module or
the controller internal data bus interface
is defective. Replace the defective
module or the controller.
- If the LED is no longer flashing,
switch off the power supply and
place the end module in the middle
of the second half of the I/O modules
(away from the controller).
- Switch the power back on.
- Repeat this procedure until you
establish which I/O module is
defective. Then replace that module.
Diagnostics 333
Manual