HEIDENHAIN iTNC 530 (340 49x-03) ISO programming - Manual (Page 507)

HEIDENHAIN iTNC 530 507
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.1 Pr
inciple and Ov
erview
Programming notes
You can mix Q parameters and fixed numerical values within a
program.
Q parameters can be assigned numerical values between
–99 999.9999 and +99 999.9999. Internally, the TNC can calculate up
to a width of 57 bits before and 7 bits after the decimal point (32-bit
data width corresponds to a decimal value of 4 294 967 296).
Some Q parameters are always assigned the same data by
the TNC. For example, Q108 is always assigned the
current tool radius (see “Preassigned Q Parameters,”
page 536).
If you are using the parameters Q60 to Q99 in encoded
OEM cycles, define via MP7251 whether the parameters
are only to be used locally in the OEM cycles, or may be
used globally.