HEIDENHAIN MANUALplus 620 Technical Manual page 1550

Transfer and
acknowledgment of
M function
1550
MP_min
Code of the first M function
Format: Numerical value
Input: 0 to 9999
First M code described in the parameter object. The properties
described in this parameter object apply for the specified M
functions.
Default: 0
Access: LEVEL3
Reaction: RESET
MP_max
Code of the last M function
Format: Numerical value
Input: 0 to 9999
Code of the last (greatest) M function described in the
parameter object.
No entry: The properties of the parameter object apply only to
the M function defined in MP_min.
Default: No entry, value optional
Access: LEVEL3
Reaction: RESET
In the Program Run, Full Sequence and Program Run, Single Block operating
modes, the next NC block is not run until the PLC has acknowledged
execution of the M function.
There are two possibilities for transferring the M strobe to the PLC and for
acknowledgment by the PLC:
Transfer and acknowledgment with MP_signal
• Transfer of the M strobe: The PLC marker defined in MP_signal is set
• Acknowledgment of the M strobe: The PLC marker defined in
MP_signal is reset.
Transfer with MP_signal and acknowledgment with MP_acknowledge:
• Transfer of the M strobe: The PLC marker defined in MP_signal is set
• Acknowledgment of the M strobe: The PLC marker defined in
MP_acknowledge is set.
HEIDENHAIN recommends that you only use MP_signal for transfer and
acknowledgment.
If MP_signal and MP_acknowledge are not defined, the data of the M strobe
are saved without synchronization with the PLC program. The output is
immediately acknowledged.
HEIDENHAIN Technical Manual MANUALplus 620