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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6 Mechanical Zero Return (DSZR/ZRN Instruction)
6.2 DOG Search Zero Return (DSZR Instruction)
B - 90
4 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U 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
3U/FX3UC/FX3G PLC,
use transistor output for signals rotation direction.
→ For the outputs applicable with a High-speed output special adapter, refer to Section 4.9.
6.2.2 List of Related devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX
3U-2HSY-ADP adapters are
connected to the FX
3U PLC.
*3. Cleared when PLC switches from RUN to STOP.
*4. Only available for FX
3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
High-speed output special
adapter connection position
Pulse output Rotation direction output
1st adapter
= Y000
= Y004
= Y001
= Y005
2nd adapter
= Y002
= Y006
= Y003
= Y007
Device number
Function Attribute Refer to
Y000 Y001
Y002
*1
Y003
*2
M8029 "Instruction execution complete" flag Read only
Subsection
4.4.2
M8329 "Instruction execution abnormal end" flag Read only
Subsection
4.4.2
M8340 M8350 M8360 M8370 "Pulse output monitor" (BUSY/READY) flag Read only
Subsection
4.4.3
M8341 M8351 M8361 M8371
CLEAR signal output function enable
*3
Drivable
Subsection
4.3.4
M8342 M8352 M8362 M8372
Zero return direction specification
*3
Drivable
Subsection
4.3.3
M8343 M8353 M8363 M8373 Forward limit Drivable
Subsection
4.3.1
M8344 M8354 M8364 M8374 Reverse limit Drivable
Subsection
4.3.1
M8345 M8355 M8365 M8375
DOG signal logic reverse
*3
Drivable
Subsection
4.3.5
M8346 M8356 M8366 M8376
Zero point signal logic reverse
*3
Drivable
Subsection
4.3.6
M8348 M8358 M8368 M8378 Positioning instruction activation Read only
Subsection
4.4.4
M8349 M8359 M8369 M8379
Pulse output stop command
*3
Drivable
Subsection
4.3.2
M8464 M8465 M8466 M8467
CLEAR signal device specification function
enabled
*3, *4
Drivable
Subsection
4.3.4
D
1
D
2
D
1
D
2
D
1
D
2
D
1
D
2