Mitsubishi Electric Melsec Q Series Programming Manual page 300

5 OPERATION CONTROL PROGRAMS
POINT
• Precautions at speed change
(1) A speed change may be invalid if the speed change is executed until the
"positioning start complete signal" status changes to ON at servo program
start request. When making a speed change at almost the same timing as a
start, create a program to execute speed change after the "positioning start
complete signal" has turned on.
(2) When the reverse return is requested during stop in the state of FIN waiting
using the M-code FIN signal wait function in constant-speed control, it will
be ignored.
(3) In the example of previous page, if reverse return is requested before P2
and the axis passes through P2 during deceleration, it return to P2.
(4) There will be a delay of time equivalent to an operation cycle at the
maximum in the response time from when the CHGV instruction is executed
until the speed begins to change actually.
Reverse return is
requested here.
Axis2
P2
Starting point
5 - 77
P3
P1 Axis1