SQL FETCH.......................................................................................................................................... 433

SQL UPDATE........................................................................................................................................434

SQL INSERT......................................................................................................................................... 435

SQL COMMIT...................................................................................................................................... 436

SQL ROLLBACK................................................................................................................................... 437

SQL SELECT........................................................................................................................................ 438

10.10 Entering formulas directly................................................................................................................. 439

Entering formulas................................................................................................................................. 439

Rules for formulas................................................................................................................................441

Example of entry................................................................................................................................. 442

10.11 String parameters.............................................................................................................................. 443

String processing functions................................................................................................................. 443

Assign string parameters..................................................................................................................... 444

Chain-linking string parameters............................................................................................................445

Converting a numerical value to a string parameter............................................................................446

Copying a substring from a string parameter......................................................................................447

Reading system data........................................................................................................................... 448

Converting a string parameter to a numerical value............................................................................449

Testing a string parameter................................................................................................................... 450

Finding the length of a string parameter.............................................................................................451

Comparing alphabetic priority.............................................................................................................. 452

Reading out machine parameters........................................................................................................ 453

10.12 Preassigned Q parameters................................................................................................................ 456

Values from the PLC: Q100 to Q107...................................................................................................456

Active tool radius: Q108.......................................................................................................................456

Tool axis: Q109.....................................................................................................................................457

Spindle status: Q110............................................................................................................................ 457

Coolant on/off: Q111............................................................................................................................ 457

Overlap factor: Q112............................................................................................................................ 457

Unit of measurement for dimensions in the program: Q113...............................................................457

Tool length: Q114................................................................................................................................. 458

Coordinates after probing during program run.................................................................................... 458

Deviation between actual value and nominal value during automatic tool measurement with, for

example, the TT 160............................................................................................................................ 458

Tilting the working plane with spatial (workpiece) angles instead of spindle head angles: Coordinates

for rotary axes calculated by the control............................................................................................. 458

Measurement results from touch probe cycles.................................................................................. 459

10.13 Programming examples.................................................................................................................... 461

Example: Ellipse................................................................................................................................... 461

Example: Concave cylinder machined with spherical cutter................................................................463

Example: Convex sphere machined with end mill...............................................................................465

HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017

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