Siemens IP-Module Manual descargar pdf (Pagina 90)

Machine Data, Modes and Traversing Programs IP 266

Tool offset (TO)

The tool offset is a coordinate shift, and is used to compensate for tool wear.

The maximum value for a tool offset depends on the axis used. The value

specified in the machine data can be called up from a traversing program only via

G functions for positive or negative tool offsets (see Section 5.4).

Value range: ± 32767.999 mm

The sum of the coordinate values for

• software limit switches and

• tool offset

must be in the range ± 32767.999 mm.

Note:

Invocation of a tool offset does not result in a traversing movement.

Use mode 15 if you want to implement a tool offset other than the one defined in

the machine data.

Following a tool offset, the coordinate system is displaced by the value of that

tool offset, i. e. the values become more positive by the value of the tool offset.

You will find two detailed examples showing the use of tool offsets in the part of

Section 5.3.15 that describes the tool offset mode.

Backlash compensation

"Play" in the drive system is referred to as backlash. On each reversal of the

direction of movement, the backlash causes the motor to rotate without

changing the position of the axis. Backlash outside the position control loop can

be compensated. When the direction of movement is reversed, the IP 266 makes

allowance for the backlash.

5-18

EWA 4NEB 812 6057-02

1 2 ... 85 86 87 88 89 90 91 92 93 94 95 ... 359 360

Sin comentarios

Siemens IP-Module Manual Pagina 90