12CONTROL SUB FUNCTIONS

[2]Precautions during control

MELSEC-Q

(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.

Deceleration start point

Operation pattern: Positioning complet (00)

Execution of target position change request

Time

 

 

 

 

Md.48 Deceleration start flag 0

1

 

 

 

 

(6)When the movement direction is reversed by a target position change, the deceleration start flag turns ON.

Operation pattern: Positioning complete (00)

Execution of target position change request

Time

 

 

 

 

Md.48 Deceleration start flag 0

1

 

 

 

 

(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.

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Mitsubishi Electronics QD75P, QD75D user manual Precautions during control