Siemens IP-Module Manual descargar pdf (Pagina 89)

100

101

IP 266 Machine Data, Modes and Traversing Programs

Also note that

• the software limit switches

• the reference point and

• the actual value

are recomputed when a zero offset is used. When you enter the data, remember

that all coordinates must be within the permissible range (refer to the following

example).

The zero offset values are available only to the programmable ZOs in traversing

programs (see Section 5.4). If you want to specify another zero offset, you must

use modes 12 and 15.

Example:

Table 5.3 contains absolute position values. The "Before" column shows the

positions that were current prior to a ZO. A relative zero offset of - 400 mm

renders the actual value, the software limit switches and the reference point

more positive by 400. As you can see in Table 5-3, this measure puts the software

end limit switch out of range.

Table 5-3. Coordinate Shift as Consequence of a Zero Offset

32500

Software limit switch (start)

Software limit switch (end)

Reference point

Actual value

200

400

600

-16000 -15600

32900

Coordinates in mm

Before After

EWA 4NEB 812 6057-02

5-17

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 359 360

Comentarios a estos manuales

Sin comentarios

Siemens IP-Module Manual Pagina 89

Comentarios a estos manuales

Relacionado con productos y manuales para Detectores de humo Siemens IP-Module