Mitsubishi Electric FX3U SERIES - Function and Operation; Operation Without Acceleration;Deceleration (M8338 = off

FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC 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 - 146
10.3 Function and Operation
The variable speed pulse output instruction changes the speed while using the rotation direction output.
The acceleration/deceleration function applies for the variable speed pulse output (PLSV) instruction, which
makes it possible to specify whether acceleration/deceleration will be used or not.
If an FX
3UC PLC below Ver. 2.20 is used, operation will be performed without acceleration/deceleration.
10.3.1 Operation without Acceleration/Deceleration (M8338 = OFF)
If the output pulse frequency value is changed after turning the acceleration/deceleration function
(M8338) OFF, the variable speed pulse output (PLSV) instruction will change the output frequency without
using acceleration/deceleration.
For details on the maximum speed and bias speed, refer to Subsection 4.2.5 and Subsection 4.2.6.
1) For , specify the output pulse frequency.
Even if pulses are being output, the output pulse frequency can be changed freely.
Acceleration/deceleration, however, will not be performed.
*1. Setting range of FX
3S/FX3G/FX3GC PLC is -32,768 to -10 Hz, +10 to 32,767 Hz.
*2. Setting range of FX
3S/FX3G/FX3GC PLC is -100,000 to -10 Hz, +10 to 100,000 Hz.
2) For , specify the pulse output number in the range of Y000 to Y003.
3) For , specify the rotation direction signal output device number.
When a high-speed output special adapter is used as a destination for pulse output on a FX
3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX
3S/FX3G/FX3GC/FX3U/
FX
3UC PLC, use transistor output for signals rotation direction.
Setting range
16-bit operation
-32,768 to -1 Hz, +1 to 32,767 Hz
*1
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
*2
High-speed output special
adapter number
Pulse output
destination device
Rotation direction
output
1st adapter
= Y000
= Y004
= Y001
= Y005
2nd adapter
= Y002
= Y006
= Y003
= Y007
S
M8001
FNC157
PLSV
S• D
1
• D
2
•
M8338
Command
input
ON
S• 100 250 500 250
Speed
Time
OFF
Instruction
Activation contact
S
S
D
1
D
2
D
1
D
2
D
1
D
2
D
1
D
2
D
1
D
2
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