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MELSEC-Q
12 CONTROL SUB FUNCTIONS
[2] Precautions during control
(1) The deceleration start flag function is val id for the control system of "1-axis
linear control", "2-axis linear interpolation control ", "3-axis linear interpolation
control", "4-axis linear interpolation contro l", "speed-position switching control"
or "position-speed switching control". (In th e case of linear interpolation
control, the function is valid for only the r eference axis.) Refer to Section 3.2.4
"Combination of QD75 main functions and sub functions".
(2) The deceleration start flag does not turn ON when the operation pattern is
"continuous positioning control" or "continu ous path control".
(3) The deceleration start flag function is inv alid for an OPR, JOG operation,
inching operation, manual pulse generator o peration, and deceleration made
with a stop signal.
(4) The deceleration start flag does not turn ON when a speed change or
override is used to make deceleration.
(5) If a target position change is made while the deceleration start flag is ON, the
deceleration start flag remains ON.
Time
Operation pattern: Positioning complet (00)
Md.48Deceleration start flag 01
Deceleration start point
Execution of target position change request
(6) When the movement direction is reverse d by a target position change, the
deceleration start flag turns ON.
Time
Operation pattern: Positioning complete (00)
Md.48Deceleration start flag 01
Execution of target position change request
(7) During position control of position-sp eed switching control, the deceleration
start flag is turned ON by automatic deceler ation.
The deceleration start flag remains ON if pos ition control is switched to speed
control by the position-speed switching signa l after the deceleration start flag
has turned ON.
(8) During skip operation, the deceleration s tart flag is valid for only the
positioning data whose operation pattern is "Positioni ng complete".
(9) If the condition start of a block start is not m ade since the condition is not
satisfied, the deceleration start flag turns ON when the shape i s "End" .
(10) When an interrupt request during conti nuous operation is issued, the
deceleration start flag turns ON at a start of dec eleration in the positioning
data being executed.