On Fri, 30 Mar 2012, Viesturs L?cis wrote: > Date: Fri, 30 Mar 2012 23:27:30 +0300 > From: "[UTF-8] Viesturs L?cis" <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Smart-serial and 7i43 > > 2012/3/30 Peter C. Wallace <[email protected]>: >> >> Is your RJ45 pin 3 high? (high than pin 6) if not you likely have the +/- >> swapped on both RX and TX >> > > Just to make sure that I correctly understand, what do You mean: > > Pin 3 is Txa for 8i20, so I have connected to non-inverted input of > SN75179 chip. I really tried to extra careful to make them right - Tx > from my converter to Rx of 8i20 and vice versa. > > I measured - pin 3 is 3,93 V above GND, pin 6 is 0,96 V above GND. > > Viesturs
Thats correct Are you sure you have a straight through CAT 5 cable? > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > 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. ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
