FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6 Mechanical Zero Return (DSZR/ZRN Instruction)
6.3 Zero Return (ZRN Instruction)
B - 101
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
6.3.2 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 FX
3G
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
/
FX
3UC
PLC Ver. 2.20 or later and
FX
3G
PLC.
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 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
M8343 M8353 M8363 M8373 Forward limit Drivable Subsection
4.3.1
M8344 M8354 M8364 M8374 Reverse limit Drivable Subsection
4.3.1
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
enable*3, *4 Drivable Subsection
4.3.4
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
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