Mitsubishi FX-20P-E, Operation Manual

Page: 91 / 128

FX-20P-E Handy programming panel Others Function 10
10-3
10.3 Program check
• In the online mode, programs are saved in the PLC (memory cassette if used) are checked.
Alternatively in the offline mode, programs saved in the inbuilt HPP RAM are checked.
• Program check in the online mode, "I/O ERROR", "PC H/W ERR", "LINK ERROR", "PARA.
ERROR", "GRAMMAR ERROR", "LADDER ERROR" and "RUN TIME ERROR" are
checked. Program check in the offline mode, "PARA. ERROR", "GRAMMAR ERROR" and
"LADDER ERROR" are checked. (The double coil check is not executed.)
• An error message and code is displayed if such error in a particular step No. occurs and is
detected. If two or more errors have occurred, eliminate the cause of an error, then execute
the program check again to display the next error. (Forcibly reset the special auxiliary relay
M8068 and the special data register D8068 using the test function.)
Program check condition
PLC
status
RUN:
✓
STOP:
✓
Valid memory Inbuilt memory:
✓
RAM cassette:
✓
EEPROM
cassette:
✓
EPROM
cassette:
✓