HEIDENHAIN TNC 306 Technical Manual - Manual (Page 227)

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TNC 406/TNC 306 14 Electrode changer 4-127
14 Electrode changer
The PLC enables implementation of a simple electrode changer with fixed tool positions, such as a
pick-and-place rack type.
For electrode changers that function with proximity switches, reference should be made to the
description in the technical manual TNC360 / TNC335.
The geometric information of the electrodes is defined by the TOOL DEF or the "TOOL DEFINITION"
cycle in the NC program.
14.1 Controlling an electrode changer
The control of an electrode changer, i.e. positioning and change sequence, must be written in the
PLC program. The evaluation of the TOOL DEF and TOOL CALL blocks as well as the "TOOL
DEFINITION" cycle is performed by the NC. Communication between NC and PLC is via markers
and words.
NC Program Example
.
.
.
TOOL
DEF 1 L+2.73 R+5
CYCL DEF 3.0 TOOL DEFINITION
CYCL DEF 3.1 T2 R+2.7
CYCL DEF 3.2 X+10.3 Y–15.02
CYCL DEF 3.3 Z+18.15 C+1.23
.
.
.
TOOL
CALL 1 Z U+0.42
.
.
.
TOOL
CALL 2 Z U+2.24
.
.
.