HEIDENHAIN TNC 426 (280 476) - Manual (Page 22)

XVIII
10.1 Principle and Overview ..... 356
Programming notes ..... 356
Calling Q parameter functions ..... 357
10.2 Part Families – Q Parameters in Place of Numerical Values ..... 358
Example NC blocks ..... 358
Example ..... 358
10.3 Describing Contours through Mathematical Operations ..... 359
Function ..... 359
Overview ..... 359
Programming fundamental operations ..... 360
10.4 Trigonometric Functions ..... 361
Definitions ..... 361
Programming trigonometric functions ..... 362
10.5 Calculating Circles ..... 363
Function ..... 363
10.6 If-Then Decisions with Q Parameters ..... 364
Function ..... 364
Unconditional jumps ..... 364
Programming If-Then decisions ..... 364
Abbreviations used: ..... 365
10.7 Checking and changing Q parameters ..... 366
Procedure ..... 366
10.8 Additional Functions ..... 367
Overview ..... 367
FN14: ERROR: Displaying error messages ..... 368
FN15: PRINT: Output of texts or Q parameter values ..... 370
FN16: F-PRINT: Formatted output of texts or Q parameter values ..... 371
FN18:SYS-DATUM READ Read system data ..... 373
FN19: PLC: Transferring values to the PLC ..... 379
FN20: WAIT FOR NC and PLC synchronization ..... 379
FN 25: PRESET: Setting a new datum ..... 380
FN26: TABOPEN: Opening a Freely Definable Table ..... 381
FN27: TABWRITE: writing to a freely definable table ..... 381
FN28: TABREAD: Reading a Freely Definable Table ..... 382
10.9 Entering Formulas Directly ..... 383
Entering formulas ..... 383
Rules for formulas ..... 384
Programming example ..... 385
10 Programming: Q Parameters ..... 355