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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
10.3 Function and Operation
B - 138
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output for other purposes.
10.3.2 Operation with Acceleration/Deceleration (M8338 = ON)
If the output pulse frequency value is changed after turning the
acceleration/deceleration (M8338) ON, the variable speed pulse output
(PLSV) instruction will accelerate or decelerate to the changed output.
If a FX
3UC PLC below Ver.2.20 is used, operation will be performed without acceleration/deceleration.
→ For details on the maximum speed, bias speed, acceleration time, and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
1) For , specify the output pulse frequency.
Even if pulses are being output, the output pulse frequency can be changed freely. Acceleration/
deceleration will be performed.
2) For , specify the pulse output number in the range of Y000 to Y003.
ON/OFF status of
device specified
by
Rotation direction (increase/decrease current value)
ON
If the number of output pulses specified by is a positive number, the operation will
be performed in the forward rotation direction.
Forward rotation (Outputting pulses from will increase the current value.)
OFF
If the number of output pulses specified by is a negative number, the operation
will be performed in the reverse rotation direction.
Reverse rotation (Outputting pulses from will decrease the current value.)
Setting range
16-bit operation -32,768 to -1 Hz, 1 to 32,767 Hz
32-bit operation
When a high-speed output special
adapter is used
-200,000 to -1 Hz, 1 to 200,000 Hz
When a transistor output from the
main unit is used
-100,000 to -1 Hz, 1 to 100,000 Hz
D
2
D
2
S
D
1
S
D
1
S
M8000
FNC 157
PLSV
S
•
D
1
•
D
2
•
M8338
Command
input
ON
S
•
100 250 500 250
Speed
Time
OFF
Instruction
Activation contact
Maximum speed Initial value: 100,000 Hz
Output
pulse
frequency
S
•
Deceleration timeAcceleration time
Bias speed
Initial value: 0 Hz
Bias speed
Initial value: 100 ms Initial value: 100 ms
S
S
D
1