Restrictions When Using The Next Start - Mitsubishi A1SD75M3 User Manual

10 ADVANCED POSITIONING CONTROL

10.3.9 Restrictions when using the NEXT start

The "NEXT start" is a command indicating the end of the repetitions when executing
section "10.3.7 Repeated start (FOR loop)" and section "10.3.8 Repeated start (FOR
condition)".
The following shows the restrictions when setting "7: NEXT start" in the "start block
data".
(1) The processing when "7: NEXT start" is set before execution of "5: FOR loop" or
"6: FOR condition" is the same as that for a "0: normal start".
(2) Repeated processing will not be carried out if there is no "7: NEXT start"
command after the "5: FOR loop" or "6: FOR condition" command. (Note that an
"error" will not occur.)
(3) Nesting is not possible between "5: FOR loop" and "7: NEXT start", or between
"6: FOR condition" and "7: NEXT start". A warning "FOR to NEXT nesting
structure" (warning code: 506) will occur if nesting is attempted.
Start block data Da.12 Special start command
1st point
2nd point
3rd point
4th point
5th point
6th point
7th point
8th point
9th point
•
•
Normal start
FOR
Normal start
FOR
Normal start
Normal start
NEXT
Normal start
NEXT
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MELSEC-A
The JUMP destination of the
NEXT designated with points
7 and 9 is the FOR of point 4.
A warning will occur if the
NEXT designated with point 9
is executed.