You can find the pinout for the default m5i20 driver FPGA configuration here:
http://cvs.linuxcnc.org/cgi-bin/cvsweb.cgi/emc2/src/hal/drivers/m5i20/hostmo t5_src/Hostm54e.pin You can use a secondary encoder on P3 for the MPG, or the fourth one on P2 if you need more IO. You don't need the DS3486 unless you want additional noise immunity. You can just use one of the differential signals from the encoder. Just make sure you use all of the same (either + or -) so as not to change the phasing. I wouldn't bother with the 74HC128 either. If you want to save the IOs, use a 3-pole rotary and wire each pole to count as one binary bit. If you have enough IO, just attach all 6 positions to separate IO. ~petev -----Original Message----- Message: 3 Date: Sun, 8 Apr 2007 20:54:03 -0700 From: "Kasparov, Aram" <[EMAIL PROTECTED]> Subject: Re: [Emc-users] Hardware Feedrate Override Control To: "Enhanced Machine Controller \(EMC\)" <[email protected]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" Hi Anders Thanks for response. I don't have strong electronics wiring background so I want to ask some questions. 5i20 card that I use has two parts, first is analog to drive axis and second for I/O. First part (axis drive) has capability to move 4 axes and I use only 3 of them. Where do I need wire my manual pulse generator (jog wheel)? I believe that the right place is to use remaining connections for 4 axes, because only this connector has area for encoder with 15 pins. Actually remaining connector for 4 axes has 25 pins (DB 25) and I believe that I need pick those that address encoder. Am I right? 6 and 4 position switches and 4 push type switches should be connected to I/O area of 5i20. Am I right? Please let me know if I have correct vision of wiring to I can move forward. Thank you, Aram Kasparov -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.26/750 - Release Date: 4/6/2007 9:30 PM ------------------------------------------------------------------------- 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-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
