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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4 Before Programming
4.3 Various Special Relays for Operation Commands
B - 55
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
4.3.9 Acceleration/Deceleration by PLSV Instruction
Using an FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC, if M8338 (acceleration/deceleration operation) is
turned on, the variable speed pulse output (PLSV) instruction will be activated to accelerate/decelerate the
operation.
This means that if the command value of the output pulse frequency is changed, the operation will be
accelerated or decelerated to the changed output pulse frequency depending on the specified acceleration/
deceleration time.
→ For operation of PLSV instruction, refer to Chapter 10.
Caution:
• To enable acceleration/deceleration, turn on M8338 first, and then activate the variable speed pulse output
(PLSV) instruction.
• If acceleration/deceleration is enabled, the variable speed pulse output (PLSV) instructions of all the pulse
output destination devices will accelerate/decelerate with the same time. This means that acceleration/
deceleration cannot be specified separately for each pulse output destination device.
Bias speed
Acceleration
time
Initial value: 100 ms
Deceleration time
Output
pulse
frequency
Maximum speed
Initial value: 100,000 Hz
Initial value: 100 ms
Initial value: 0 Hz
Bias speed