HEIDENHAIN TNC 320 (340 55x-04) - Manual (Page 21)

HEIDENHAIN TNC 320 21
8.1 Principle and Overview ..... 222
Programming notes ..... 224
Calling Q-parameter functions ..... 225
8.2 Part Families—Q Parameters in Place of Numerical Values ..... 226
Function ..... 226
8.3 Describing Contours through Mathematical Operations ..... 227
Application ..... 227
Overview ..... 227
Programming fundamental operations ..... 228
8.4 Trigonometric Functions ..... 229
Definitions ..... 229
Programming trigonometric functions ..... 230
8.5 Circle Calculations ..... 231
Application ..... 231
8.6 If-Then Decisions with Q Parameters ..... 232
Application ..... 232
Unconditional jumps ..... 232
Programming If-Then decisions ..... 232
Abbreviations used: ..... 233
8.7 Checking and Changing Q Parameters ..... 234
Procedure ..... 234
8.8 Additional Functions ..... 235
Overview ..... 235
FN 14: ERROR: Displaying error messages ..... 236
FN 16: F-PRINT: Formatted output of text and Q parameter values ..... 241
FN 18: SYS-DATUM READ: Read system data ..... 245
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 ..... 221