HEIDENHAIN TNC 620 User Manual page 40

Contents
9 Programming Q parameters........................................................................................................323
9.1 Principle and overview of functions................................................................................................. 324
Programming notes...............................................................................................................................326
Calling Q parameter functions.............................................................................................................. 327
9.2 Part families—Q parameters in place of numerical values............................................................. 328
Application............................................................................................................................................. 328
9.3 Describing contours with mathematical functions......................................................................... 329
Application............................................................................................................................................. 329
Overview............................................................................................................................................... 329
Programming fundamental operations..................................................................................................330
9.4 Angle functions................................................................................................................................... 331
Definitions............................................................................................................................................. 331
Programming trigonometric functions.................................................................................................. 331
9.5 Calculation of circles...........................................................................................................................332
Application............................................................................................................................................. 332
9.6 If-then decisions with Q parameters................................................................................................ 333
Application............................................................................................................................................. 333
Unconditional jumps..............................................................................................................................333
Programming if-then decisions............................................................................................................. 334
9.7 Checking and changing Q parameters............................................................................................. 335
Procedure.............................................................................................................................................. 335
9.8 Additional functions............................................................................................................................337
Overview............................................................................................................................................... 337
D14: Displaying error messages........................................................................................................... 338
D16 – Formatted output of text and Q parameter values.....................................................................342
D18 – Reading system data................................................................................................................. 347
D19 – Transfer values to the PLC.........................................................................................................355
D20 – NC and PLC synchronization......................................................................................................355
D29 – Transfer values to the PLC.........................................................................................................356
D37 – EXPORT......................................................................................................................................356
D38 – Send information from NC program.......................................................................................... 356
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016