Mitsubishi Electric MELSEC Q Series Programming Manual page 161

4 PARAMETERS FOR POSITIONING CONTROL
POINTS
(1) When the setting of acceleration/deceleration time change enable device is
omitted, change of acceleration/deceleration time at a speed change request is
not executed. When changing acceleration/deceleration time at a speed
change, set this parameter.
(2) When the setting of new acceleration time value device and new deceleration
time value device is omitted, change of acceleration/deceleration time of the
omitted devices is not executed.
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