DREF

ASCII - Command

DREF

 

 

Syntax Transmit

DREF [Data]

 

Syntax Receive

DREF <Data>

Available in

 

Type

Variable rw

MMI

Yes

ASCII Format

Integer8

CANBus Object Number

352C (hex)

DIM

-

PROFIBUS PNU

1644 (dec) IND = 0000xxxx (bin)

Range

0, 1, 2

DPR

44 (dec)

Default

0

 

Opmode

8

Data Type Bus/DPR

Integer8

Drive State

-

Weightning

 

Start Firmware

1.20

 

Configuration

No

Revision

1.3

Function Group

Position Controller

EEPROM

Yes

Short Description

Direction for Homing

Description

The DREF parameter can be used to define the preferred direction of motion for a homing operation and for positioning with a modulo-axes (POSCNFG=2).

Status

Short description

Description

DREF = 0

Negative movement

A homing move is always started in the negative direction (-VREF).
Using a modulo axes type a position is always searched in negative direction (is DIR=1, the target position is searched in the positive direction).

DREF = 1

Positive movement

A homing move is always started in the positive direction (+VREF).
Using a modulo axes type a position is always searched in positive direction (is DIR=1, the target position is searched in the negative direction).

DREF = 2

Optimized movement

The shortest distance between the starting position and the zero pulse of the resolver is executed in Homing Mode No. 5 (NREF=5).
When a modulo axes type is used, the drive always searches for the shortest distance to reach the position.