Skip Function; Skip Function - Mitsubishi Electric A173UHCPU Programming Manual

8. AUXILIARY AND APPLIED FUNCTIONS
8.7

Skip Function

PLC ready(M2000)
All axes servo start command
(M2042)
External STOP signal
Turn ON STOP input valid/invalid
signal (M3209+20n) at start of
positioning.
Based on an external input, the skip function halts the current positioning and
executes the next positioning control.
The servo system CPU can run the skip function according to the external STOP
signal and the sequence program.
(1) The procedure for using the skip function based on the external STOP signal
and the sequence program is shown below.
Start
Start positioning with servo
program
Turn ON external STOP signal
when positioning halts.
Turn On the STOP input
valid/invalid signal (M3209+20n)
After deceleration stop, start next
servo program positioning
End
(2) Operation timing
The operation timing of the skip function is shown in the diagram below.
V
Start
positioning
to point A
ON
OFF
ON
OFF
OFF
OFF
Positioning does not start if the STOP signal, stop command
(M3200+20n), or rapid stop command (M3201+20n) is ON.
Turn M3209+20n ON to use the skip function.
(The external STOP signal becomes invalid when the next
positioning starts.)
Operation stop confirmed when start accept flag (M2001+n)
turns OFF.
Positioning to point A
Deceleration stop due to STOP input
(STOP signal turning ON is ignored
while M3209+20n is ON)
A
ON
ON before next positioning starts
ON
8 − 15
Start positioning of the next servo
program due to skip function