Mitsubishi Q00JCPU User Manual page 432

6
FUNCTIONS
(7) Self-diagnostics list
Diagnostics
CPU error
END instruction not
executed
SFC program
execution error
RAM check
Tracking memory or
tracking hardware
Hardware
fault
failure
Calculation circuit
check
*1*2
Fuse blown
I/O interrupt error
LAN controller error
6
- 132 6.17 Self-diagnostics Function
Table6.35 lists the self-diagnostics performed in the CPU module.
The error messages in the "Error message" column can be checked on the screen
displayed by selecting [Diagnostics]
The numbers in the "CPU module" column correspond to the CPU modules as
indicated in Table6.34.
Table6.34 Number in the "CPU module" column and corresponding CPU module
No.
1)
2)
3)
4)
5)
Table6.35 Self-diagnostics list
Error message Diagnostics timing
MAIN CPU
• Always
DOWN
• When the END
END NOT
instruction is
EXECUTE
executed
• When SFC
SFCP. END
program is
ERROR
executed
• When the CPU
RAM ERROR module is
powered on/reset
• When the CPU
module is
TRK. CIR.
powered on/reset
ERROR
• When operation is
being performed
• When the CPU
module is
OPE.CIRCUIT powered on/reset
ERR. • When END
processing is
executed
FUSE BREAK
• Always
OFF
• When an interrupt
I/O INT. ERROR
occurs
• When the CPU
LAN CTRL.
module is
DOWN
powered on/reset
[PLC diagnostics] in GX Developer.
Basic model QCPU
High Performance model QCPU
Process CPU
Redundant CPU
Universal model QCPU
CPU
module
RUN
status
Stop OFF
Stop OFF
Stop OFF
Stop OFF
Stop OFF
Stop OFF
Stop/
OFF/ON
Continue
Stop OFF
Stop OFF
: Self-diagnostics is performed,
CPU module
LED status CPU module
ERR. 1) 2)
Flash
Flash
Flash
Flash
Flash
Flash
Flash/ON
Flash
Flash
: Self-diagnostics is not performed
(Continued on next page)
3) 4) 5)
*8