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Machine Data, Modes and Traversing Programs IP 266

Rough structure of the program:

1. ZO forward + 10 mm (e. g. ZO 1)

2. Call

subroutine for the three drill holes at the positions 10 mm, 20 mm and

30 mm

3. ZO forward + 50 mm to absolute position 50 mm (e. g. ZO 2) and positioning

to the start position

4. Call subroutine for the three drill holes at the positions + 50 mm, 60 mm and

70 mm

5. ZO forward to absolute position + 90 mm (e. g. ZO 3) and positioning to the

start position

6. Call subroutine for the three drill holes at the positions 90 mm, 100 mm and

110 mm

Four offsets can be entered in the machine data. The sign indicates the

direction of the offset. A G function is assigned to each offset.

- Zero offset 1 G54 (10 mm)

- Zero offset 2 G55 (50 mm)

- Zero offset 3 G56 (90 mm)

- Zero offset 4 G57 (150 mm)

A G-function zero offset is added to both the absolute and relative zero off-

sets set via modes 12 and 13. The offset value modifies all coordinate values

for

- software limit switches

- reference point

- coordinate zero point

Enabled zero offsets are automatically reset when the traversing program

terminates.

Zero offsets set in a subroutine are not reset until the main program is exited.

The G53 function resets the zero offsets set in the traversing program and the

associated subroutines.

When you abort a traversing program, the set zero offsets are retained, and

can be reset only via mode 14.

Note:

5-84

EWA 4NEB 812 6057-02

1 2 ... 151 152 153 154 155 156 157 158 159 160 161 ... 359 360

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Siemens IP-Module Manual Pagina 156