Md.48

12CONTROL SUB FUNCTIONS

12.7.9 Deceleration start flag function

MELSEC-Q

The "deceleration start flag function" turns ON the flag when the constant speed status or acceleration status switches to the deceleration status during position control whose operation pattern is "Positioning complete". This function can be used as a signal to start the operation to be performed by other equipment at each end of position control or to perform preparatory operation, etc. for the next position control.

For the "deceleration start flag function", the following will be explained.

[1]Control details

[2]Precautions during control

[3]Deceleration start flag function setting method

[4]Checking of deceleration start flag

[1]Control details

When deceleration for a stop is started in the position control whose operation

pattern is "Positioning complete", "1" is stored into " Deceleration start flag". When the next operation start is made or the manual pulse generator operation enable status is gained, "0" is stored. (Refer to Fig. 12.51.)

(1) Start made with positioning data No. specified

V Operation pattern: Positioning complete (00)

Time

 

 

 

 

 

 

Md.48 Deceleration start flag 0

1

0

 

 

 

 

 

 

Fig. 12.51 Operation of deceleration start flag

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Image 568
Mitsubishi Electronics QD75P, QD75D Deceleration start flag function, Start made with positioning data No. specified