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7. POSITIONING CONTROL
7
−
65
[Program Example]
This program conducts speed control (II) under the conditions below.
(1) System configuration
Speed control (II) of Axis 3.
Start/stop
command (X000)
M
A172B
A172SHCPUN
A172S
ENC
A1S
X10
MR-[]-B
MR-[]-B
MR-[]-B
MR-[]-B
M
M
M
Axis
1
Axis
2
Axis
3
Axis
4
(2) Speed control (II) conditions
(a) The speed control (II) conditions are shown below.
Item
Setting
Servo program number
No. 55
Controlled axis
Axis 3
Control speed
4000
Rotation direction
Forward
(b) Speed control (II) start command ....... leading edge of X000
(OFF
→
ON)
(c) Speed control (II) stop command ....... trailing edge of X000
(ON
→
OFF)
(3) Operation timing
The operation timing for speed control (II) is shown below.
Speed control by servo
program No.55
V
All axes servo start command(M2042)
All-axis servo start accept flag (M2009)
Start command(X000)
SVST instruction
Axis 3 start accept flag (M2003)
PLC ready (M2000)
4000
Stop command (M1840)
Stop command
received
t
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