Contents
48
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
SQL EXECUTE......................................................................................................................................430
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
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