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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
13 High Speed Processing – FNC 50 to FNC 59
13.8 FNC 57 – PLSY / Pulse Y Output
6. Others
1) Types of pulse output, positioning and other relevant instructions and their target output numbers
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX
3G PLC is
connected.
*2. The pulse output destination Y003 can be specified only when two special high speed output adapters are
connected to an FX
3U PLC.
*3. This function is supported only in FX
3U/FX3UC PLCs.
2) When using the same output relay (Y000 or Y001) in several instructions.
While a pulse output monitor (BUSY/READY) flag is ON a pulse output instruction and positioning instruction for
the same output relay cannot be executed.
While a pulse output monitor flag is ON even after the instruction drive contact is set to OFF, a pulse output
instruction or positioning instruction for the same output relay cannot be executed.
Before executing such an instruction, wait until the pulse output monitor flag turns OFF and one or more operation
cycles pass.
3) "Frequency control mode" in which DHSZ (FNC 55) and PLSY (FNC 57) instructions are combined can be used
only once in a program.
Program example (when outputting pulses without any limitation)
When is set to K0, pulses are output without any limitation.
Classification Instruction Instruction name Target output numbers
Pulse output
PLSY(FNC 57) Pulse Y output Y000,Y001
PLSR(FNC 59) Acceleration/deceleration setup Y000,Y001
Positioning
DSZR(FNC150) DOG search zero return
Y000,Y001,Y002
*1
,Y003
*2
DVIT(FNC151)
*3
Interrupt positioning
Y000,Y001,Y002,Y003
*2
ZRN(FNC156) Zero return
Y000,Y001,Y002
*1
,Y003
*2
PLSV(FNC157) Variable speed pulse output
Y000,Y001,Y002
*1
,Y003
*2
DRVI(FNC158) Drive to increment
Y000,Y001,Y002
*1
,Y003
*2
DRVA(FNC159) Drive to absolute
Y000,Y001,Y002
*1
,Y003
*2
High speed
processing
PWM(FNC 58) Pulse width modulation
Y000,Y001,Y002
*1
,Y003
*2
Pulse output destination device Pulse output monitor flag
Y000 M8340
Y001 M8350
S
2
FNC 57
DPLSY
K1000 K0 Y000
Command
input
No limitation (K0)
1000Hz
Y000