After some consultation with the release manager I have decided to push multi-spindle support in to the current development branch. A side-effect of this is that motion.spindle.xxxx pins all become spindle.0.xxxxx pins. (and so on for extra spindles.) When I push it this will be added as a refinement to the update_ini automatic script so configs should update automatically.
To add more spindles just add "num_spindles=" to the end of the "loadrt motmod" line in HAL, and add a [TRAJ]SPINDLES to the INI. It is imperative that these match or trouble will ensue. The spindle to use is controlled by the $ character (as all the other letters were in use). This doesn't match any commercial control, but should make remapping to match any specific control relatively easy. The current behaviour of LinuxCNC is that spindles have a speed even when off. To see this try M3 S100 followed by M5, then M3 with no S-word. You will see that the spindle re-starts with the previous speed. This becomes rather more obvious with multi spindle. S10 $0 S100 $1 S1000 $2 Will set the speeds of each spindle, but not start them. Then M3 will start them all simultaneously. M4 will reverse them all. M5 will stop them all. M4 $2 will only reverse spindle 2 M5 $1 will only stop spindle 1. G76 $1 ..... will perform a threading cycle synched to the encoder feedback on the spindle.1.revs pin. A preview version (merged with current master) can be tried in the "andypugh/multispindle-master" branch. Questions... What should be the effect of a $ on a line by itself? Should we allow multiple $? eg M5 $0 $2 to stop two spindles? At the moment there is an internal concept of "current spindle". Perhaps there should instead be a spindle mask and $ should be interpreted to set this mask prior to parsing the S and F words in the block. Has anyone used multi-spindle G-code on a different control? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
