HEIDENHAIN TNC 620 (73498x-01) - Manual (Page 22)

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8.10 Entering formulas directly ..... 281
Entering formulas ..... 281
Rules for formulas ..... 283
Programming example ..... 284
8.11 String parameters ..... 285
String processing functions ..... 285
Assigning string parameters ..... 286
Chain-linking string parameters ..... 287
Converting a numerical value to a string parameter ..... 288
Copying a substring from a string parameter ..... 289
Converting a string parameter to a numerical value ..... 290
Checking a string parameter ..... 291
Finding the length of a string parameter ..... 292
Comparing alphabetic priority ..... 293
Reading machine parameters ..... 294
8.12 Preassigned Q parameters ..... 297
Values from the PLC: Q100 to Q107 ..... 297
Active tool radius: Q108 ..... 297
Tool axis: Q109 ..... 298
Spindle status: Q110 ..... 298
Coolant on/off: Q111 ..... 298
Overlap factor: Q112 ..... 298
Unit of measurement for dimensions in the program: Q113 ..... 299
Tool length: Q114 ..... 299
Coordinates after probing during program run ..... 299
Deviation between actual value and nominal value during automatic tool measurement with the TT 130 ..... 300
Tilting the working plane with mathematical angles: rotary axis coordinates calculated by the TNC ..... 300
Measurement results from touch probe cycles (see also User’s Manual for Touch Probe Cycles) ..... 301
8.13 Programming examples ..... 303