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Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

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15.1.1 Special tools<br />

Special tools are oversize tools where pockets on either side in the tool magazine have to be left<br />

vacant .<br />

P5 P6<br />

P7 P8 P9<br />

P10<br />

The number of pockets to be left vacant on both sides of the tool is defined in machine parameter<br />

MP7264. Special tools are identified by an "S" in the tool table. The numbers of the vacant pockets<br />

are not displayed. Variable pocket coding can be limited for special tools. If marker M2601 is set,<br />

then special tools are returned to their original pocket despite the "variable pocket coding" setting.<br />

MP7264 Number of pockets reserved next to special tool<br />

Input range: 0 to 3<br />

Set Reset<br />

M2601 Special tool to original pocket PLC PLC<br />

despite variable pocket coding<br />

15.2 Controlling the tool changer<br />

Controlling the tool changer, i.e. positioning the changing arm and carousel and the complete<br />

toolchange sequence is performed by the PLC. The NC handles tool pocket assignment and<br />

evaluation of the TOOL DEF and TOOL CALL blocks. The NC and PLC communicate by markers and<br />

words.<br />

The TOOL DEF block can be used to pre-position the tool changer. After a tool has been changed,<br />

the next tool is programmed with TOOL DEF. The PLC evaluates the tool and pocket number and<br />

pre-positions the tool changer at the follow-up tool.<br />

8/95 <strong>TNC</strong> <strong>360</strong> 15 Tool Changer 4-197

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