Mitsubishi Electric Q172CPU Programming Manual page 77

4 POSITIONING DEDICATED SIGNALS
Do not turn the start accept flags ON/OFF in the user side.
• If the start accept flag is turned off using the Motion SFC program or peripheral devices while
this flag is on, no error will occur but the positioning operation will not be reliable. Depending on
the type of machine, it might operate in an unanticipated operation.
• If the start accept flag is turned on using the Motion SFC program or peripheral devices while
this flag is off, no error will occur but the "start accept on error" will occur at the next starting and
cannot be started.
(3) Personal computer link communication error flag (M2034)
This flag turns on when the communication error occurs in the personal
computer link communication.
• ON : Personal computer link communication error occurs
• OFF: No personal computer link communication error
(It turns off if normal communication is resumed.)
Refer to APPENDIX 2.6 for details on the PC link communication errors.
(4) Motion SFC error history clear request flag (M2035)
This flag is used to clear the backed-up Motion SFC error history (#8000 to
#8063).
The Motion SFC error history is cleared at the turning M2035 OFF to ON.
After detection of the turning M2035 OFF to ON, the Motion SFC error history is
cleared, and then the M2035 is automatically turned OFF.
REMARK
It can be used in the SW6RN-SV22Q (Ver.00N or later).
(5) Motion SFC error detection flag (M2039) ................. Status signal
This flag turns on with error occurrence at the execution of the Motion SFC
program.
When turned off this flag, execute it by the user side after checking the error
contents.
CAUTION
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.............. Status signal
........ Command signal