Four Processes with LinuxCNC

Hi, I want to ask a question. When I run LinuxCNC script, the four processes start up. How do they communication with each other ? Use NML or another way ?

Thanks.

Hi

You will have to elaborate as to which 4 processes you mean

For instance this is ps -A just after linuxcnc is started

27523 pts/1 00:00:00 linuxcnc
27664 pts/1 00:00:00 linuxcncsvr
27681 ? 00:00:00 RTAI_KTHRD_M:0
27682 ? 00:00:00 F:HARD:0:1
27683 ? 00:00:00 RTAI_KTHRD_M:1
27684 ? 00:00:00 RTAI_KTHRD_M:2
27685 ? 00:00:00 F:HARD:1:1
27686 ? 00:00:00 F:HARD:2:1
27687 ? 00:00:00 RTAI_KTHRD_M:3
27688 ? 00:00:00 F:HARD:3:1
27703 ? 00:00:00 udevd
27704 ? 00:00:00 udevd
27710 pts/1 00:00:00 io
27712 pts/1 00:00:00 halui
27727 pts/1 00:00:00 hal_manualtoolc
27737 pts/1 00:00:00 milltask

but yes probably
(EDIT If you search the source for RCS_STAT_CHANNEL you will pick up the various processes and which NML channel they attach to )

regards