HEIDENHAIN TNC 620 User Manual page 36

Contents
9 Programming: Q Parameters.......................................................................................................299
9.1 Principle and overview of functions................................................................................................. 300
Programming notes...............................................................................................................................302
Calling Q parameter functions.............................................................................................................. 303
9.2 Part families-Q parameters in place of numerical values............................................................. 304
Application............................................................................................................................................. 304
9.3 Describing contours with mathematical functions......................................................................... 305
Application............................................................................................................................................. 305
Overview............................................................................................................................................... 305
Programming fundamental operations..................................................................................................306
9.4 Angle functions................................................................................................................................... 308
Definitions............................................................................................................................................. 308
Programming trigonometric functions.................................................................................................. 308
9.5 Calculation of circles...........................................................................................................................309
Application............................................................................................................................................. 309
9.6 If-then decisions with Q parameters................................................................................................ 310
Application............................................................................................................................................. 310
Unconditional jumps..............................................................................................................................310
Abbreviations used:...............................................................................................................................310
Programming if-then decisions............................................................................................................. 311
9.7 Checking and changing Q parameters............................................................................................. 312
Procedure.............................................................................................................................................. 312
9.8 Additional functions............................................................................................................................314
Overview............................................................................................................................................... 314
FN 14: ERROR: Displaying error messages......................................................................................... 315
FN16: F-PRINT - Formatted output of text and Q parameter values.................................................... 319
FN 18: SYSREAD: Reading system data.............................................................................................. 323
FN 19: PLC - Transfer values to the PLC.............................................................................................331
FN 20: WAIT FOR - NC and PLC synchronization............................................................................... 331
FN 29: PLC - Transfer values to the PLC.............................................................................................332
FN 37: EXPORT.....................................................................................................................................332
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015