FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4 Before Programming
4.7 Items To Be Observed in Programming
B - 80
Use with PLSY (FNC 57) and PLSR (FNC 59) instructions:
Along with the positioning instructions (FNC150 - FNC159), the pulse output instructions (FNC 57 and FNC
59) require hardware for outputting pulses.
• Do not use the same output number for both a positioning instruction (FNC150 - FNC159) and a pulse
output instruction (FNC 57 or FNC 59).
• The use of a positioning instruction together with a PLSY or PLSR instruction will complicate the operation
of the register that controls the number of output pulses (see the following table). For this reason, it is
recommended that a positioning instruction should be used in place of the PLSY or PLSR instruction.
For details on the related devices, refer to Section 4.1 to Section 4.4.
*1. Y002 is not available in FX
3G PLC (14-point and 24-point type) and FX3S/FX3GC PLC.
*2. Y003 is available only when two high-speed output special adapters are connected to the FX
3U PLC.
• If it is necessary to use a positioning instruction (FNC150 to FNC159) together with a pulse output
instruction (FNC 57 or FNC 59), use the following positioning instruction in place of the pulse output
instruction:
- FNC 57(PLSY), FNC 59(PLSR)FNC158(DRVI)
Pulse output
destination device
Current value register
For FNC150 - FNC159 instructions For FNC 57 and FNC 59 instructions
Y000 D8341,D8340 D8141,D8140
Y001 D8351,D8350 D8143,D8142
Y002
*1
D8361,D8360 -
Y003
*2
D8371,D8370 -
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