Q Parameters And Functions In Oem-Cycles; Q Parameters With Special Significance; Fn-Functions With Special Significance - HEIDENHAIN TNC 415 Technical Manual

1.2 Q parameters and functions in OEM-cycles

Q-parameter programming can be used to create OEM-cycles with variable program data, with
which, for example, extremely varied drilling patterns, curves (e.g. spirals, sinusoidal, ellipse,
parabola) and shaped components can be milled.
A detailed description of Q parameters and functions is given in the TNC 407/TNC 415 Operating
Manual.

Q parameters with special significance

During a program run, data is transferred to the following Q parameters. When creating OEM-cycles,
these can be read and also overwritten:
Q108 Tool radius of tool last called
Q109 Current tool axis
Q110 M function last output for spindle rotation direction
Q111 Coolant on/off
Q112 Overlapping factor for pocket-milling (from MP7430)
Q113 Main program contains measurements in millimetres or inches

FN-Functions with special significance

The following FN functions can be used to execute various tasks, such as error messages and data
transfer NC -> PLC in the OEM-cycles.
FN14 Output of error messages and dialogs to VDU
FN15 Output of error messages, dialogs and Q-parameter values to a file or via a data interface
(V.24/RS-232-C or V.11/RS-422).
FN19 Assignment of two numerical values or Q-parameter values from an OEM-cycle to PLC.
(Function FN19 is described in detail in the "PLC Programming" Manual).
9-6 TNC 407/TNC 415/TNC 425 1 Creating OEM-cycles 01.98