HEIDENHAIN TNC 620 (340 56x-02) ISO programming - Manual (Page 22)

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8.1 Principle and Overview ..... 198
Programming notes ..... 199
Calling Q-parameter functions ..... 200
8.2 Part Families—Q Parameters in Place of Numerical Values ..... 201
Function ..... 201
8.3 Describing Contours through Mathematical Operations ..... 202
Application ..... 202
Overview ..... 202
Programming fundamental operations ..... 203
8.4 Trigonometric Functions ..... 204
Definitions ..... 204
Programming trigonometric functions ..... 205
8.5 If-Then Decisions with Q Parameters ..... 206
Application ..... 206
Unconditional jumps ..... 206
Programming If-Then decisions ..... 206
8.6 Checking and Changing Q Parameters ..... 207
Procedure ..... 207
8.7 Additional Functions ..... 208
Overview ..... 208
D14: ERROR: Displaying error messages ..... 209
D18: Read system data ..... 213
D19 PLC: Transfer values to the PLC ..... 221
8.8 Accessing Tables with SQL Commands ..... 222
Introduction ..... 222
A Transaction ..... 223
Programming SQL commands ..... 225
Overview of the soft keys ..... 225
SQL BIND ..... 226
SQL SELECT ..... 227
SQL FETCH ..... 230
SQL UPDATE ..... 231
SQL INSERT ..... 231
SQL COMMIT ..... 232
SQL ROLLBACK ..... 232
8.9 Entering Formulas Directly ..... 233
Entering formulas ..... 233
Rules for formulas ..... 235
Programming example ..... 236
8 Programming: Q Parameters ..... 197