>> the home position. I am going to be investigating this over the >> next >> week or so to >> make sure homing to the index mark really works. > > I recently upgraded a STG driven CNC mill from EMC1 to EMC2. Homing > on > an index pulse didn't work for me. I ended up setting the "home on > index > pulse" parameters for all three axes to "NO" in the .ini file. > Luckily a > precision home position wasn't critical to my client, but it is a > loose > end...
right.. I'm afraid right now the STG doesn't work on homing on indexes. I only have the board Matt sent me, it's a STG1, so I think I could take a look at that. The problem with the STG is that the people who made it, did a pretty decent job for the whole board, except for the index'es.. It's really a mess, and supporting both boards (STG and STG2) will be an even bigger mess. > Also, the estop control logic is slightly different in EMC2, not > necessarily wrong, but different. In EMC1 the ESTOP state would > change > to ESTOP RESET only after pressing F1 and setting the "estop write" > bit. > In EMC2 you go to ESTOP RESET as soon as "estop sense" is OK (the > estop > chain is all continuous). In EMC1 the F1 key would toggle "estop > write", > in EMC2 you have to break the estop chain to get from MACHINE ON to > ESTOP. Like I said not wrong, just different. Right.. Done like this, it's actually up to the Integrator to decide how he feels it's best. Ray did a great job on a wiki page regarding this issue: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Sample_HAL_And_ClassicLadder > Finally I've found that keyboard jogging in tkemc is jerky. Starting > a > jog move seems OK, but upon releasing the key the axis jerks to a > stop > rather than smoothly decelerating. sounds like a pita. I've never seen that. it might be related to accel ramps? Maybe improper STEPGEN_MAXACCEL values.. > Matt > Regards, Alex ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
