![Mitsubishi Electric A171SHCPUN Programming Manual Download Page 202](http://html.mh-extra.com/html/mitsubishi-electric/a171shcpun/a171shcpun_programming-manual_238566202.webp)
7. POSITIONING CONTROL
7
−
50
(4) Operation timing
The operation timing for circular interpolation control using center point
designation is shown below.
V
PLC ready (M2000)
All axes servo start command
(M2042)
All-axis servo start accept flag
(M2009)
Positioning start command (X000)
SVST instruction
Axis 1 start accept flag (M2001)
Axis 2 start accept flag (M2002)
Servo program No. 51
(5) Servo program
The servo program No. 51 for circular interpolation control using center point
designation is shown below.
Circular interpolation control using center point
designation
Axis used
Axis 1,Axis 2
End point address
Positioning speed
1000
Center point address
<K
51>
ABS
Axis
1,
78541
Axis
2,
30000
Speed
1000
Center
point
1,
45000
Center
point
2,
20000
Axis
1
78541
Axis
2
30000
Axis
1
45000
Axis
2
20000
(6) Sequence program
The sequence program which runs the servo program is shown below.
Turns ON all axes servo start
command.
CIRCUIT END
Turns ON PLC ready.
Servo program No. 51 execution
request.
Turns ON servo program No. 51
start command flag (M53) when
X000 turns OFF
→
ON.
Turns OFF M53 on completion
of servo program No. 51 execution
request.
M9039
M9074
X000
M9074
M51
M9074 M2009 M9076
M53
M2001
M2000
M2042
PLS
SET
J1J2
RST
M51
M53
51
K
M53
SVST
0
2
4
11
13
M2002
Downloaded from