HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 288)

Programming: Q Parameters
9.7 Additional functions
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TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
D19: Transfer values to PLC
The D19 function transfers up to two numerical values or Q
parameters to the PLC.
Increments and units: 0.1 µm or 0.0001°
Example: Transfer the numerical value 10 (which means 1 µm or
0.001°) to the PLC
N56 D19 P01 +10 P02 +Q3 *
D20: NC and PLC synchronization
This function may only be used with the permission
of your machine tool builder.
With the D20 function you can synchronize the NC and PLC during
a program run. The NC stops machining until the condition that you
have programmed in the D20 block is fulfilled. The TNC can check
the following PLC operands:
PLC
operand Abbreviation Address range
Markers M 0 to 4999
Input I 0 to 31, 128 to 152
64 to 126 (first PL 401 B)
192 to 254
(second PL 401 B)
Output O 0 to 30
32 to 62 (first PL 401 B)
64 to 94
(second PL 401 B)
Counter C 48 to 79
Timer T 0 to 95
Byte B 0 to 4095
Word W 0 to 2047
Double
word
D 2048 to 4095