Creating Sequence Programs To Start Servo Programs; Case Where The Servo Program Is Executed Once Only - Mitsubishi Electric SV13/22 Programming Manual

6. SERVO PROGRAMS FOR POSITIONING CONTROL
6.5

Creating Sequence Programs to Start Servo Programs

6.5.1

Case where the servo program is executed once only

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This section describes sequence programs that execute positioning control by
using servo programs.
The general concept for a program that executes a designated servo program
once only in response to the start request is shown in Figure 6.5.
Start request
1)
3)
*The applications of 1) to 5) are indicated below.
1): Start request leading edge detection flag (devices that can be used: Y, M, L, S, B, F)
2): Start accept flag (set a number of flags corresponding to the number of axes
designated in the servo program)
3): DSFRP/SVST instruction execution request flag (devices that can be used: Y, M, L, S,
B, F)
4): Axis No. designated in the servo program
5): Started servo program No. (K0 to K4095)
Example
A sequence program that issues a start request for servo program No.10 - which
executes circular interpolation with axis 3 and axis 4 - when X000 comes ON, is shown
below.
(1) Condition
The flags that can be used with sequence programs are indicated below.
DSFRP/SVST instruction execution request flag
Start accept flag
(2) Sequence program example
Fig. 6.5 Sequence Program for Starting a Servo Program
search engine
PLS
SET
2)
4)
DSFRP
(SVST)
RST
Flag Name
Flag for recording the start request
Axis 3
Axis 4
Start request
X000
M10
Start accept
M11 M2003 M2004
6 − 13
When the start request comes
ON, if the designated axis is not in
1)
motion, a request to execute a
DSFRP/SVST instruction is
3)
issued.
Servo program start request
5)
issued in response to
DSFRP/SVST instruction.
3)
On completion of execution of the
DSFRP/SVST instruction, the
device designated at 1) is reset.
Device No.
M10
M11
M2003
M2004
PLS M10
SET M11
D34 K10
DSFRP
J3J4 K10
SVST
RST M11