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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
FX
3U PLC.
*3. Only available for FX
3U/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