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6.8 Recording the operation contents and self-diagnostics error occurrence contents (operation/error history

function)

FUNCTIONS

6.8 Recording the operation contents and self-diagnostics error

occurrence contents (operation/error history function)

(1) What the operation/error history function is

The operation/error history function records the operations that have been executed

to the CPU module from the outside and the self-diagnostics errors that have

occurred in the CPU module in the past. The objective of this function is to make

troubleshooting easier.

(2) Data stored in the operation/error history area

The CPU module stores the operations that have been executed to the CPU module

from the outside and the self-diagnostics errors in the operation/error history area.

(a) Operations executed to the CPU module from the outside

The following are stored as operations executed to the CPU module from the

outside.

• Online operations from GX Developer

• Operations with the CPU module RUN/STOP/RESET

• Input power supply ON/OFF

Table6.13 shows the operations stored in the operation/error history.

Diagram 6.13 Recording the operation/error history to the CPU module

GX Developer

Operation error history

CPU module

Remote STOP

4101:OPERATION ERROR

5001:WDT ERROR

Record

Operation

from

outside

Record self-

diagnostics

error

Operation error

occurred

WDT error occurred

OP161:SWITCH TO STOP

REMOTERY

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