On Tue, 16 Nov 2010, Andy Pugh wrote: > Date: Tue, 16 Nov 2010 00:01:37 +0000 > From: Andy Pugh <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: Matt Shaver <[email protected]>, > "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] [Emc-developers] 8i20 Support Patch > > On 15 November 2010 23:24, Matt Shaver <[email protected]> wrote: > >> Page 2 of 3 shows the 7i47 RS-422 interface, currently unused pins of >> which are connected to the 8i20's serial port (in drawing 000006B). > > The 7i47 might or might not be right for this job. I get lost in a > maze of product codes all alike. > >> A. Do I need a new version of the 5i20 firmware? In this case I'm using >> SVST2_4_7I47.BIT. > >> B. The example in the man page shows the configuration parameter >> "conf_sserial" being used to assign pins to serial port functions. If >> (as shown in the 000006B drawing) I want to send data to the 8i20 on >> 5i20 bit 21, and receive 8i20 data on 5i20 bit 14, what is the correct >> value for "conf_sserial"? > > SSerial seems to be a 3-wire protocol. The firmware files I have been > experimenting with give this sort of pinout:
Actually SSERIAL SSLBP firmware is 2 wires, its just that the 7I44 supports half duplex RS-485 so has XMIT enable which we just set permanently enabled in the current SSERIAL firmware. The 7I47 has no TXENs but doesnt need them for the 8I20. > > As is fairly typical with the Hostmot2 firmware, the pins are in fixed > positions and can only be used for their intended purpose, or not. > Firmwares can be built with the pins in different places, but that is > a change at firmware compile time. > > Does the motor you want to drive have an encoder or hall sensors or both? > > -- > atp > > ------------------------------------------------------------------------------ > Beautiful is writing same markup. Internet Explorer 9 supports > standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. > Spend less time writing and rewriting code and more time creating great > experiences on the web. Be a part of the beta today > http://p.sf.net/sfu/msIE9-sfdev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > 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. ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
