HEIDENHAIN TNC 620 (340 56x-03) - Manual (Page 23)

HEIDENHAIN TNC 620 23
8.1 Principle and Overview ..... 230
Programming notes ..... 231
Calling Q-parameter functions ..... 232
8.2 Part Families—Q Parameters in Place of Numerical Values ..... 233
Function ..... 233
8.3 Describing Contours through Mathematical Operations ..... 234
Application ..... 234
Overview ..... 234
Programming fundamental operations ..... 235
8.4 Trigonometric Functions ..... 236
Definitions ..... 236
Programming trigonometric functions ..... 237
8.5 Circle Calculations ..... 238
Application ..... 238
8.6 If-Then Decisions with Q Parameters ..... 239
Application ..... 239
Unconditional jumps ..... 239
Programming If-Then decisions ..... 239
Abbreviations used: ..... 240
8.7 Checking and Changing Q Parameters ..... 241
Procedure ..... 241
8.8 Additional Functions ..... 242
Overview ..... 242
FN 14: ERROR: Displaying error messages ..... 243
FN 16: F-PRINT: Formatted output of text and Q-parameter values ..... 248
FN 18: SYS-DATUM READ ..... 252
FN 19: PLC: Transfer values to the PLC ..... 261
FN 20: WAIT FOR: NC and PLC synchronization ..... 261
FN 29: PLC: Transfer values to the PLC ..... 262
FN37: EXPORT ..... 263
8.9 Accessing Tables with SQL Commands ..... 264
Introduction ..... 264
A Transaction ..... 265
Programming SQL commands ..... 267
Overview of the soft keys ..... 267
SQL BIND ..... 268
SQL SELECT ..... 269
SQL FETCH ..... 272
SQL UPDATE ..... 273
SQL INSERT ..... 273
SQL COMMIT ..... 274
SQL ROLLBACK ..... 274
8 Programming: Q Parameters ..... 229