Entirely through Modbus, which otherwise works. I started from the wj200_vfd.c code and made some changes to make an x200_vfd.c file. Just changing a few coils.
Modbus starts from the OB RS232 serial port and goes through an isolationg RS232-RS485 converter. Like I say, setup's been good, but this button breaks things. Danny ---- John Kasunich <jmkasun...@fastmail.fm> wrote: > How is LinuxCNC connected to the VFD? > > Direct hardware control, with an analog speed command and start/stop signals > from a parallel port? > > Or serial communications using a HAL driver specific to that brand of VFD? > > Or Modbus using the generic LinuxCNC HAL Modbus driver? > > Or Ethernet using ??? driver? > > That is critical information - I don't recall seeing it anywhere in this > email chain, but maybe I missed something in the first message or two. > > The core of LinuxCNC (GUI and motion controller) doesn't communicate with > the VFD at all. LinuxCNC reads and writes to HAL pins, and those pins are > connected to some driver that in turn talks to the drive. > > So there are two things happening here: > > 1) The core of LinuxCNC manipulates the HAL pins differently when you > use M3 or the MPG compared to when you use the on-screen buttons. > > 2) The driver and/or the VFD itself responds badly to the HAL pin activity > from the on-screen buttons. > > I think the first step is to figure out item 1. Set up halscope to observe > all the spindle-related HAL pins. Capture and save shots of it working > correctly when driven by M3 or the MPG. Then capture it failing when > driven by the on-screen button. Study the screen pictures and figure > out what is different. Maybe the difference makes sense given the > context, maybe it is a bug in the core of LinuxCNC. Post your findings. > > If the difference makes sense, then the problem is in the driver or the > VFD. If we know exactly what driver you are using and how it is > connected to the drive, and we know exactly what the HAL pins going > into the driver are doing, maybe we can figure out what is wrong. > > -- > John Kasunich > jmkasun...@fastmail.fm > > ------------------------------------------------------------------------------ > Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San > Francisco, CA to explore cutting-edge tech and listen to tech luminaries > present their vision of the future. This family event has something for > everyone, including kids. Get more information and register today. > http://sdm.link/attshape > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
