13 - 94
Chapter 13 Control Sub Functions
13.7.8 Deceleration start flag function
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 "
Md
.48
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. 13.49.)
(1) Start made with positioning data No. specified
Time
Operation pattern: Positioning complete (00)
V
Md.48 Deceleration start flag 0
1
0
Fig. 13.49 Operation of deceleration start flag
(2) Block start
At a block start, this function is valid for only the position control whose
operation pattern is "Positioning complete" at the point whose shape has
been set to "End". (Refer to Fig. 13.50.)
The following table indicates the operation of the deceleration start flag in the
case of the following block start data and positioning data.
Block start
data
Da.11
Shape
Da.12
Start data No.
Da.13
Special start
instruction
1st point
1: Continue
1
0: Block start
2nd point
1: Continue
3
0: Block start
3rd point
0: End
4
0: Block start
•
•
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