4 – 4 HEIDENHAIN Technical Manual TNC 426, TNC 430
Enter into OEM.SYS, using the code word AXISNUMBER =, the number of axes
being used, so that only the necessary index parameters are displayed.
With other machine parameters you can activate specific functions. In this
case, the parameters serve as on/off switches for these functions. These
parameters are bit-encoded. Each bit is assigned either to an axis or a function.
4.2 Input and Output of Machine Parameters
If the machine parameters have not yet been entered in a HEIDENHAIN
contouring control (e.g., before commissioning), the TNC presents the list of
machine parameters after the memory test:
7
77
7 Enter the values for the machine parameters either by hand on the keyboard
or download them through the data interface.
4.2.1 Input Format
You can enter the input values either in decimal, binary (%) or hexadecimal ($)
format.
7
77
7 Enter a number for each machine parameter.
The value represents, for example, the acceleration in mm/s
2
or the analog
voltage in V. You can add a comment to your entry be preceding it with a
semicolon “;”. Binary input (%) is the best format for machine parameters that
activate individual functions bit-encoded.
Example: Disabling soft keys for file types with MP7224.0
The soft keys for datum tables and text files are to be disabled:
0: Do not disable
1: Disable
Bit 0 HEIDENHAIN programs .H
Bit 1 ISO programs .I
Bit 2 Tool tables .T
Bit 3 Datum tables .D
Bit 5 Text files .A
Bit 6 HELP files .HLP
Bit 7 Point tables .PNT
Input value for MP7224.0 = Binary %00101000
Hexadecimal $28
Decimal 40 (32+8)
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