6 – 424 HEIDENHAIN Technical Manual TNC 426, TNC 430
Output of the tool
number with fixed
pocket coding
For fixed pocket coding of tools you must evaluate the tool number:
7
77
7 With MP7480.x, specify when the tool number is to be transferred.
• With every TOOL CALL or TOOL DEF block: MP7480.x = 2
• When changing a tool number: MP7480.x = 1 During execution of a TOOL
CALL or TOOL DEF block the tool number is saved in W264 (W262 is not
used).
• For MP7480.x = 5 or 6: The pocket number is saved in W262. The
assignment of tool and pocket number in the pocket table does not
change.
Output of the
pocket number
with variable
pocket coding
With variable pocket coding (MP7480.x = 3 or 4) the pocket number of the
called tool is transferred to the PLC and the assignment of tool and pocket
number is changed in the pocket table. The current tool number is additionally
saved in W264. The NC takes over responsibility for variable pocket
management.
If you have set M4542, the assignment of tool and pocket numbers in the
pocket table does not change, although variable pocket coding was selected.
You set this marker, for example, during a block scan (except if MP7681
bit 1 = 1).
7
77
7 In MP7261, enter the number of tools with pocket number. The maximum
input value is the number of the pockets in the tool magazine.
In the tool table you can define more tools than can be held by the tool
magazine (MP7260 > MP7261). If a tool number is programmed for which no
pocket was defined, during a TOOL CALL the pocket number –1 (W262) is
transferred and M4523 is set.
During programming of TOOL DEF the tool and pocket numbers are
transferred. A TOOL DEF for a manual tool has no relevance for the PLC.
Set Reset
W262 Tool pocket number NC NC
W264 Tool number NC NC
M4073 Strobe signal T code (P code) with
TOOL CALL
NC NC
M4074 Strobe signal T code (P code) with
TOOL DEF
NC NC
M4093 Acknowledgment of T code (P code)
with TOOL CALL
PLC PLC
M4094 Acknowledgment of T code (P code)
with TOOL DEF
PLC PLC
M4521 Tool number zero programmed NC NC
M4538 Geometry of the tool from W264 PLC NC
M4547 T and G strobes with TOOL CALL NC NC
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