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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 - 89
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
6.2 DOG Search Zero Return (DSZR Instruction)
Use this instruction to change the CLEAR signal output destination with an FX3U/FX3UC PLC Ver.2.20 or later
or an FX
3G PLC.
6.2.1 Instruction Format
1. Instruction format
2. Data setting
3. Devices
1:D.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
2 : Specify a device in the range of X000 to X007.
3 : Specify Y000, Y001, or Y002
*1
transistor output from the main unit, or specify Y000, Y001, Y002
*3
, or
Y003
*3
from a high-speed output special adapter
*2
.
*1. Y002 is not available in 14-point and 24-point type FX
3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX
3U PLC.
*3. To use Y002 and Y003 of a high-speed output special adapter, connect a second high-speed output
special adapter.
Note:
• To use an FX
3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
Operand type Description Data type
Specifies the near-point signal (DOG) input device number.
Bit
Specifies the zero-phase signal input number.
Specifies the pulse output number.
Specifies the rotation direction signal output destination number.
Operand
type
Bit device Word device Others
System user Digit designation System user
Spe-
cial unit
Index
Con-
stant
Real
num-
ber
Char-
acter
string
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R U\G V Z Modify K H E ""P
333 3 1 3
2
3
3
3
4
331 3
FNC 150
DSZR
ZERO RETURN
WITH DOG
SEARCH
16-bit
instruction
9 steps
DSZR
-
Continuous
execution
type
Instruction
symbol
Execution condition
32-bit
instruction
-
-
Instruction
symbol
Execution condition
Command
input
FNC 150
DSZR
S
2
•
S
1
•
D
1
•
D
2
•
S
1
S
2
D
1
D
2
S
1
S
2
D
1
D
2