HEIDENHAIN TNC 620 (340 56x-02) - Manual (Page 23)

HEIDENHAIN TNC 620 23
8.1 Principle and Overview ..... 224
Programming notes ..... 225
Calling Q-parameter functions ..... 226
8.2 Part Families—Q Parameters in Place of Numerical Values ..... 227
Function ..... 227
8.3 Describing Contours through Mathematical Operations ..... 228
Application ..... 228
Overview ..... 228
Programming fundamental operations ..... 229
8.4 Trigonometric Functions ..... 230
Definitions ..... 230
Programming trigonometric functions ..... 231
8.5 Circle Calculations ..... 232
Application ..... 232
8.6 If-Then Decisions with Q Parameters ..... 233
Application ..... 233
Unconditional jumps ..... 233
Programming If-Then decisions ..... 233
Abbreviations used: ..... 234
8.7 Checking and Changing Q Parameters ..... 235
Procedure ..... 235
8.8 Additional Functions ..... 236
Overview ..... 236
FN 14: ERROR: Displaying error messages ..... 237
FN 16: F-PRINT: Formatted output of text and Q parameter values ..... 242
FN 18: SYS-DATUM READ: Read system data ..... 246
FN 19: PLC: Transfer values to the PLC ..... 254
FN 20: WAIT FOR: NC and PLC synchronization ..... 255
FN29: PLC: Transferring values to the PLC ..... 256
FN37:EXPORT ..... 257
8.9 Accessing Tables with SQL Commands ..... 258
Introduction ..... 258
A Transaction ..... 259
Programming SQL commands ..... 261
Overview of the soft keys ..... 261
SQL BIND ..... 262
SQL SELECT ..... 263
SQL FETCH ..... 266
SQL UPDATE ..... 267
SQL INSERT ..... 267
SQL COMMIT ..... 268
SQL ROLLBACK ..... 268
8 Programming: Q Parameters ..... 223