Mitsubishi FX3U Series Programming Manual

541
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.1 FNC150 – DSZR / Dog Search Zero Return
11
FNC30-FNC39 Rotation and Shift
12
FNC40-FNC49 Data Operation
13
FNC50-FNC59 High-Speed Processing
14
FMC60-FNC69 Handy Instruction
15
FNC70-FNC79 External FX I/O Device
16
FNC80-FNC89 External FX Device
17
FNC100-FNC109 Data Transfer 2
18
FNC110-FNC139 Floating Point
19
FNC140-FNC149 Data Operation 2
20
FNC150-FNC159 Positioning Control
20.1 FNC150 – DSZR / Dog Search Zero Return
Outline
This instruction executes a zero return, and aligns the mechanical position with a present value register inside the
PLC.
In addition, this instruction enables the following functions not supported by the ZRN (FNC156) instruction:
• DOG search function
• Zero return by the near-point (dog) signal and zero-phase signal
It is not possible, however, to count the zero-phase signal and then determine the zero point.
→ For explanation of the instruction, refer to the Positioning Control Edition manual.
→ For cautions on using special high-speed output adapters,
refer to the Positioning Control Edition manual.
1. Instruction format
2. Set data
3. Applicable devices
S1:"D.b" is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
S2 : Specify X000 to X007.
S3 : 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 FX3G PLC (14-point and 24-point type) and FX3GC PLC.
*2. High-speed output special adapters can be connected only to FX3U PLC.
*3. To use Y002 and Y003 with a high-speed output special adapter, connected a second high-speed output
special adapter.
Points
• When using a relay output type or triac output type FX3U PLC, a special high-speed output adapter is
required.
• Outputs of special high-speed output adapters work as differential line drivers.
Operand type Description Data type
Device number for near-point signal (dog)
Bit
Input number for zero-phase signal
Device number (Y) from which pulses are to be output
Device number to which rotation direction signal is output
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD.b KnX KnY KnM KnS T C D R U\G VZModifyKH E ""P
333 3 S1 3
S
2
3
S
3
3
S
4
33S1 3
FNC 150
DSZR
−
Mnemonic Operation Condition
16-bit Instruction
9 steps DSZR
Mnemonic Operation Condition
Continuous
Operation
32-bit Instruction
S 1
S 2
D 1
D 2
S 1
S 2
D 1
D 2

Mitsubishi FX3U Series Specifications

General

Brand	Mitsubishi
Model	FX3U Series
Category	Controller
Language	English