Re: [Emc-users] 6i25 StepGen
On 6 July 2013 00:29, Kirk Wallace kwall...@wallacecompany.com wrote: I need to output quadrature stepping from a 6i25. Do you mean 6i25? There are many 6i25 firmwares that output step pulses, those are always FPGA-sourced rather than daughterboard sourced. The standard 7i76 firmware will be stepping furiously on the pins described in dmesg. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 6i25 StepGen
On Fri, 5 Jul 2013, Kirk Wallace wrote: Date: Fri, 05 Jul 2013 16:29:44 -0700 From: Kirk Wallace kwall...@wallacecompany.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: [Emc-users] 6i25 StepGen I need to output quadrature stepping from a 6i25. Do I have any options in this regard, other than bit banging or external circuitry? Thank you. Sure the Hostmot2 stepgen has 3 output modes: 0 step/dir 1 up/down 2 quadrature Note that the quadrature output rate is 4 times the rate of the other modes (man hostmot2) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 6i25 StepGen
On 07/05/2013 05:13 PM, andy pugh wrote: On 6 July 2013 00:29, Kirk Wallace kwall...@wallacecompany.com wrote: I need to output quadrature stepping from a 6i25. Do you mean 6i25? There are many 6i25 firmwares that output step pulses, those are always FPGA-sourced rather than daughterboard sourced. The standard 7i76 firmware will be stepping furiously on the pins described in dmesg. Hello Andy. I have a 6i25 without any daughter boards. I want to use it to provide A, B, and Z signals to test an encoder input circuit. When I looked at the Hostmot2 Stepgen, step/dir was the only output type. The software Stepgen component has a wide range of output types, but is too slow. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 6i25 StepGen
On 07/05/2013 05:38 PM, Peter C. Wallace wrote: ... snip Sure the Hostmot2 stepgen has 3 output modes: 0 step/dir 1 up/down 2 quadrature ... snip Sure enough, I see it now. Parameters - step_type - (u32, RW) Output format, like the step_type modparam to the software stegen(9) component. 0 = Step/Dir, 1 = Up/Down, 2 = Quadrature. In Quadrature mode (step_type=2), the stepgen outputs one complete Gray cycle (00 - 01 - 11 - 10 - 00) for each step it takes. Thank you Peter. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
