5. SEQUENCE PROGRAMS AND SFC PROGRAMS
5 − 2
5.2 Servo Program Start Request Instruction (SVST)
There is a servo program start request instruction (SVST).
When executing positioning control, up to 4 axes can be controlled with the SVST
instruction.
5.2.1 Start request instruction for 1 to 32 axes (SVST)
Usable Devices
Bit Devices Word (16 Bit) Devices Constants Pointers Level
Carry
Flag
Flag Error
X Y M L S B F T C D W R A0 A1 Z V K H P I N
Digit Designation
Number of Steps
Subset
Index
M9012
M
9010
M
9011
(D)
n !!! ! !
13
(Note)
!
!!
(Note) : Possible with indirect setting only
Setting data Setting range
(D)
J+No. of axis to be
started
J1 to J32
Direct
designation
0 to 4095
SEQUENCE PROGRAM
SVST
Execution command
(D)
n
[Execution
condition]
n
No. of servo program
to be executed
Indirect
designation
(1 word)
D800 to D8191
W0 to W1FFF
R0 to R8191
The following processing is executed at the leading edge (OFF - ON) of the SVST
instruction.
• The start accept flag (M2001+n) corresponding to the axis designated in (D) is
turned ON (see Section 3.1.3).
• A start request is issued for the servo program designated by "n".
ON
OFF
ON
OFF
SVST instruction
Start accept flag
Execution command
Designated servo program
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