1254 HEIDENHAIN Technical Manual iTNC 530 HSCI
In the PLC, evaluate the M functions that have no fixed meaning for the NC.
When an M function is transferred to the PLC, the code of the M function is
saved in W260 and the strobe marker M4072 is set:
Set M4092 in order to report the execution of the M function. The next NC
block is run. M4072 is reset by the NC.
The Mfunctions M00 to M99 can also be transferred decoded to the markers
M1900 to M1999:
Activate this function with M4571.
M functions greater than 99 but less than 299 are not transferred to the
PLC. They have a fixed meaning for the NC to activate certain functions.
Set Reset
W260 Code for M function NC NC
M4072 Strobe signal for M function NC NC
M4092 Acknowledgment of M function PLC PLC
M4571 Activation of decoded M-code
transfer in M1900 to M1999
PLC PLC
M1900 -
M1999
Decoded M function if M4571 is set NC NC
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