D18 - Reading System Data - HEIDENHAIN TNC 640 User Manual

Programming Q Parameters | Additional functions
D18 – Reading system data
With the D18 function you can read system data and store them
in Q parameters. The selection of the system datum occurs via a
group number (ID no.), a system data number, and, if necessary, an
index.
The read values of the function D18 are always output
by the control in
program's unit of measure.
The following is a complete list of the D18 function.
Please be aware that not all functions are available
depending on the model of your control.
Group Gruppen-
name nummerID
Program information
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HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
metric units regardless of the NC
Systemdaten- Index
nummer
3 -
6 -
7 -
103 Q parameter
number
110 QS parameter
number
111 QS parameter
number
Description
Number of the active machining cycle
Number of the most recently executed touch
probe cycle
–1 = None
Type of calling NC program:
–1 = None
0 = Visible NC program
1 = Cycle/macro, main program is visible
2 = Cycle/macro, there is no visible main
program
Relevant within NC cycles; for inquiry as to
whether the Q parameter given under IDX
was explicitly stated in the associated CYCLE
DEF .
Is there a file with the name QS(IDX)?
0 = No, 1 = Yes
This function eliminates relative file paths.
Is there a directory with the name QS(IDX)?
0 = no, 1 = Yes
Only absolute directory paths are possible.
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