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MELSEC-Q
12 CONTROL SUB FUNCTIONS
[2] Precautions during control
(1) The deceleration start flag function is valid for the control system of "1-axis
linear control", "2-axis linear interpolation control", "3-axis linear interpolation
control", "4-axis linear interpolation control", "speed-position switching control"
or "position-speed switching control". (In the case of linear interpolation
control, the function is valid for only the reference 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 "continuous path control".
(3) The deceleration start flag function is invalid for an OPR, JOG operation,
inching operation, manual pulse generator operation, 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.48
Deceleration start flag
01
Deceleration start point
Execution of target position change request
(6) When the movement direction is reversed by a target position change, the
deceleration start flag turns ON.
Time
Operation pattern: Positioning complete (00)
Md.48
Deceleration start flag
01
Execution of target position change request
(7) During position control of position-speed switching control, the deceleration
start flag is turned ON by automatic deceleration.
The deceleration start flag remains ON if position control is switched to speed
control by the position-speed switching signal after the deceleration start flag
has turned ON.
(8) During skip operation, the deceleration start flag is valid for only the
positioning data whose operation pattern is "Positioning complete".
(9) If the condition start of a block start is not made since the condition is not
satisfied, the deceleration start flag turns ON when the shape is "End".
(10) When an interrupt request during continuous operation is issued, the
deceleration start flag turns ON at a start of deceleration in the positioning
data being executed.