Software or hardware reasons for Mitsubishi PLC crash

Create Date: 2024-8-30 12:03:23|Source: Mitsubishi Electric/Mitsubishi Electric

1. Hardware

(1) I/O channeling, the PLC automatically detects the I/O fault and enters the STOP mode.

(2) The I/O is damaged, and the program runs to the response signal that needs the I/O, and cannot execute the instruction downward.

(3) Expansion module (functional, such as A/D) line interference or open circuit, etc.

(4) There is interference or fault in the power supply part.

(5) There is a problem with the connection module and the address distribution module of the PLC.

(6) Faults caused by cables.

                               Software or hardware reasons for Mitsubishi PLC crash

2. Software

(1) The loop is triggered.

(2) The program rewrites the contents of the system parameter area, but does not initialize the part.

(3) Maintenance program initiation: hardware maintenance, limit the use time (for payment recovery)

(4) Data overflow, step size is too large, watchdog (DOG time can be corrected) action.
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