Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル

552

/FX

3UC

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

20 Positioning Control – FNC150 to FNC159

20.5 FNC156 – ZRN / Zero Return

20.5

FNC156 – ZRN / Zero Return

Outline

This instruction executes a zero return, and aligns the mechanical position with a present value register inside the
PLC.
When the dog search function is required, use DSZR (FNC150) instruction.

→ 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

*1.

Setting range: 10 to 32767 Hz for 16-bit operation
Following range for 32-bit operation

3. Applicable devices

S1 : "D.b" is available only in FX

and FX

3UC

PLCs. However, index modifiers (V and Z) are not available.

S2 : Specify Y000, Y001 or Y002

transistor output from the main unit, or specify Y000, Y001, Y002

or Y003

from a high-speed output special adapter

*1.

Y002 is not available in 14-point and 24-point type FX

PLC.

*2.

High-speed output special adapters can be connected only to FX

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 FX

PLC, a special high speed output adapter is required.

• Outputs of special high speed output adapters work as differential line drivers.

S3 : This function is supported only in FX

/FX

3UC

PLCs.

Operand type

Description

Data type

Initial zero return speed

16- or 32-bit binary

Creep speed [10 to 32767 Hz]

Device number for near-point signal (dog)

Bit

Device number (Y) from which pulses are to be output

Pulse output destination

Setting range

PLC

Special high speed output adapter

10 to 200,000 (Hz)

/FX

3UC

PLC

Main unit (transistor output)

10 to 100,000 (Hz)

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

X Y M T C S D.b KnX KnY KnM KnS T C D R U\G V Z Modify K H

3 3 3 3

3 3

3 3 3 3

3 3

3 3 3

FNC 156

ZRN

16-bit Instruction

9 steps

Mnemonic

Operation Condition

Continuous

Operation

DZRN

32-bit Instruction

17 steps

Mnemonic

Operation Condition

Continuous

Operation