Mitsubishi Electric Q172CPU Programming Manual page 135

6 DRIVE MODULE
POINT
• Precautions at the 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 the servo
program start request . When making a speed change at almost the same
timing as a start, always create a program which will execute the speed
change after the "positioning start complete signal" has turned on.
(2) When the M-code FIN signal wait function is used in the constant-speed
control and reverse return is requested during stop in the FIN wait, it is
ignored.
(3) In the above example, 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.
Axis 2
Starting point
6 - 10
P2
P3
Axis 1
P1