Mitsubishi MELSEC QS Series User Manual page 118

6
FUNCTIONS
Classification Operation code
OP001
OP002
OP003
System
OP004
OP005
OP006
OP010
System (CPU
operation status)
OP011
Power supply
OP100
operation
Drive operation OP144
OP160
Remote
operation
OP161
Safety CPU
operation mode OP180
operation
History operation OP200
Clock operation OP210
CPUaccess
password OP220
operation
(3) Operation · history capacity
6
6.8 Recording the operation contents and self-diagnostics error occurrence contents (operation/error history
- 36
function)
Table6.13 Operations stored in the operation/error history
Operation message
SYSTEM INITIALIZE OPERATION
MODE
SYSTEM INITIALIZE PROGRAM
MEMORY
SYSTEM INITIALIZE OPE./ERROR
LOG
SYSTEM INITIALIZE SYSTEM CLOCK
SYSTEM INITIALIZE PLC MEMORY
SYSTEM INITIALIZE ROM WRITE INF.
SYSTEM SWITCH TO RUN
SYSTEM SWITCH TO STOP
POWER ON
WRITE PRGRAM MEMORY TO ROM
SWITCH TO RUN REMOTELY
SWITCH TO STOP REMOTELY
SWITCH SAFETY PC OPERATION
MODE
CLEAR OPERATION/ERROR LOG
ADJUST SYSTEM CLOCK
MODIFY ACCESS PASSWORD
(b) Self-diagnostics error
The contents of the self-diagnostics error detected by the CPU module are stored.
For details on self-diagnostics errors, refer to the following manual.
QSCPU User's Manual (Hardware Design · Maintenance and Inspection)
The contents of 3000 operations and errors can be stored in the operation/error
history of the CPU module.
When the total number of operations and errors exceeds 3000, the oldest content is
overwritten with the latest one in order.
Operation description
Because the safety CPU operation mode is
not retained correctly, the CPU module
initialized the safety CPU operation mode
in TEST MODE.
Because the program memory contents
are not retained correctly, the CPU module
formatted the program memory.
Because the operation/error history
contents are not retained correctly, the
operation/error history was initialized into 0
incidents.
Because the system clock data is not
correct, the CPU module initialized the
system clock data.
The CPU module executed the PLC
memory initialization function.
Because the write to ROM information is
not retained correctly, the CPU module
initialized the ROM information.
The CPU operation status of the CPU
module switched to the RUN state.
The CPU operation status of the CPU
module switched to the STOP state.
The PLC was power-on.Or the CPU
module reset was canceled.
The write to ROM of program memory data
standard ROM was executed.
The remote RUN operation was executed.
The remote STOP operation was
executed.
The safety CPU operation mode was
switched.
The operation/error history in the CPU
module was cleared.
The CPU module clock was set.
In the CPU module, the CPU access pass-
word was set.