HEIDENHAIN TNC 335 Technical Manual - Manual (Page 312)

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TNC 360 15 Tool Changer 4-215
15.3 PLC program example
This section describes a tool changer and contains the basic sequence diagrams of the
corresponding PLC programs. When creating a program (set auxiliary markers etc.) the constraints
on a PLC program sequence must be remembered .
The example describes a tool changer with the following features:
- Up to 99 tools
- Variable pocket coding (MP7480 = 3)
- Special tools are permitted
- Next tool standby with TOOL DEF
- Toolchange with TOOL CALL
- Tools with no pocket number defined in the tool table can be changed by hand
- Double changing arm
- Special tools variable (M2601 = 0)
SPIREG
GRE1 GRE2
ISTREG
The following sequence diagram uses variables for greater clarity. In the PLC program these
variables are replaced by byte addresses.
ISTREG = B10 = Pocket number at the toolchange position of the tool magazine
GRE1 = B11 = Pocket number of tool in changing arm facing tool magazine
GRE2 = B12 = Pocket number of tool in changing arm facing spindle
SPIREG = B13 = Pocket number of tool in spindle