Table 49: Blink Code Table For The 'I/O' Led Signaling, Error Code 3 - WAGO -I/O-SYSTEM 750 XTR Manual

134 Diagnostics

Table 49: Blink Code Table for the 'I/O' LED Signaling, Error Code 3

Error code 3: "Protocol error, internal bus"
Error
Argument
-
Manual
Version 1.3.0
Error Description Solution
--- Are passive power supply modules (750-613/040-000)
1.
2.
--- Are all modules connected correctly or are there any
1.
2.
Local bus
3.
communication is
4.
faulty, defective
module cannot be
identified.
5.
6.
7.
8.
WAGO-I/O-SYSTEM 750 XTR
750-352/040-000 FC ETHERNET G3 XTR
located in the node? ---
Check that these modules are supplied correctly with
power.
Determine this by the state of the associated status LEDs.
750-613/040-000 Modules in the node? ---
Determine 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 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).
Turn the power supply on again.
Repeat the procedure described in step 4 while halving
the step size until the faulty I/O module is detected.
Replace the faulty I/O module.
Inquire about a firmware update for the fieldbus coupler.