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6 – 426
A variety of tool types can be called from the machining program. The
abbreviations below are defined for the following examples:
n
N: Tool for which one pocket is defined in the tool table (Normal)
n
M: Tool for which no pocket number is defined in the tool table. You must
change the tool manually (Manual).
n
S: Special tool, definition in the tool table
There are nine possible combinations in the tool-change sequence. For some
sequences it is necessary during TOOL CALL to output two pocket or tool
numbers in sequence. You can recognize this with M4520 and M4540.
You must evaluate and acknowledge both pocket or tool numbers.
HEIDENHAIN Technical Manual TNC 426, TNC 430
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