FX
3G
/FX
3U
/FX
3UC
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 - 91
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
2. Special data registers
The following table shows the related special data registers. 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 FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
Device number Function Data
length
Initial
value Refer to
Y000 Y001 Y002*1 Y003*2
D8340 Low-
order D8350 Low-
order D8360 Low-
order D8370 Low-
order Current value
register (PLS) 32-bit 0 Subsection
4.4.1
D8341 High-
order D8351 High-
order D8361 High-
order D8371 High-
order
D8342 D8352 D8362 D8372 Bias speed
(Hz) 16-bit 0 Subsection
4.2.6
D8343 Low-
order D8353 Low-
order D8363 Low-
order D8373 Low-
order Maximum
speed (Hz) 32-bit 100,000 Subsection
4.2.5
D8344 High-
order D8354 High-
order D8364 High-
order D8374 High-
order
D8345 D8355 D8365 D8375 Creep speed
(Hz) 16-bit 1000 Subsection
4.2.4
D8346 Low-
order D8356 Low-
order D8366 Low-
order D8376 Low-
order Zero return
speed (Hz) 32-bit 50,000 Subsection
4.2.3
D8347 High-
order D8357 High-
order D8367 High-
order D8377 High-
order
D8348 D8358 D8368 D8378 Acceleration
time (ms) 16-bit 100 Subsection
4.2.7
D8349 D8359 D8369 D8379 Deceleration
time (ms) 16-bit 100 Subsection
4.2.8
D8464 D8465 D8466 D8467
CLEAR signal
device
specification
*3
16-bit - Subsection
4.3.4