Special Functions | Freely definable tables
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HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
D28 – Read from a freely definable table
With the D28 function you read from the table previously opened
with D26.
You can define, i.e. read, multiple column names in a D28 block.
The column names must be written between quotation marks
and separated by a comma. In the D28 block you can define the Q
parameter number in which the control is to write the value that is
first read.
You can read only numerical table fields.
If you wish to read from more than one column in a
block, the control will save the values under successive
Q parameter numbers.
Example
You wish to read the values of the columns "Radius," "Depth" and
"D" from line 6 of the presently opened table. Save the first value in
Q parameter Q10 (second value in Q11, third value in Q12).
N56 D28 Q10 = 6/"RADIUS,DEPTH,D"
Customizing the table format
NOTICE
Caution: Data may be lost!
The ADAPT NC PGM / TABLE function changes the format of all
tables permanently. Existing data is not automatically backed up
by the control before running the format change process, i.e. the
files are changed permanently and might no longer be usable.
Only use the function in consultation with the machine tool
builder.
Soft key Function
Adapt format of tables present after changing the
control software version
The names of tables and table columns must start with
a letter and must not contain an arithmetic operator
(e.g., +). Due to SQL commands, these characters can
cause problems when inputting data or reading it out.
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