September 4, 2024

#227 - Schneider How to troubleshoot PLC Halt

There are different system words that help the troubleshooting:

%S11: indicates a CPU watchdog overflow

%SW11: indicates the current CPU watchdog time

%S18: indicates overflow or arithmetic error

%S78: indicates a program execution error

%SW124: Last type of system fault encountered

%SW125: The code of the last fault detected

%SW126 : Blocking error instruction address

%SW127 : Blocking error instruction address

Links:

> https://www.se.com/us/en/download/document/EIO0000002135/

No comments:

Post a Comment