HEIDENHAIN TNC 620 (73498x-01) - Manual (Page 267)

HEIDENHAIN TNC 620 267
8.8 A
d
ditional functions
FN 19: PLC: Transfer values to the PLC
The function FN 19: PLC 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
FN 20: WAIT FOR: NC and PLC synchronization
With the FN 20: WAIT FOR 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 FN 20 block is fulfilled. The TNC can
check the following PLC operands:
The TNC 620 uses an extended interface for communication between
the PLC and NC. This is a new, symbolic Application Programmer
Interface (API). The familiar previous PLC-NC interface is also available
and can be used if desired. The machine tool builder decides whether
the new or old TNC API is used. Enter the name of the symbolic
operand as string to wait for the defined condition of the symbolic
operand.
56 FN 19: PLC=+10/+Q3
This function may only be used with the permission of
your machine tool builder.
PLC operand Abbreviation Address range
Marker 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