you should have power 5v between pins 4&5 and 7&8 of the rs485 pins 4&5 are gnd 7&8 are power , check your gnd in particular
if your drawing too much current you may not have 5v at this point i tend to use external power directly to avoid any cable problems etc On 22 January 2017 at 14:12, Viesturs Lācis <[email protected]> wrote: > 2017-01-15 18:10 GMT+02:00 Peter C. Wallace <[email protected]>: > > > > Proper firmware for 7I48 and 7I44 is 5i24_16_svss6_8.bit > > > > NOTE: 7I48 on P4 (IO 0..23) , 7I44 on P2 (IO 48..71) > > > > I got so far that manipulating pwmgen value pin does change voltage on > 7i48 outputs, so that seems to be correct and working. > > I am struggling with 7i44 and 7i71/7i70 boards - how do I find out, > what is wrong? The thing is that I do not see anything about them in > 'show HAL config'. > > In 7i44's manual I found the note about using correct cable between > 7i44 and its daughterboard. As far as I can see through the connector, > the wire colours are matching, so I guess that those are > straight-through wires. > > Currently I do not see a single LED shining on any of these boards > (7i44 and its daughterboards). Not even next to rj-45 connectors. > Power to 7i44 is supplied to P1 connector and 'cable power' jumper is > in 'off' position. 5v and 3,3v voltages show up on 7i70/7i71 board on > capacitor legs, which makes me thing that actual power is delivered to > these boards. > > Viesturs > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- The information contained in this message is confidential and is intended for the addressee only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving the RcTechnix network. RcTechnix will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any virus being passed on. RcTechnix reserves the right to monitor and record e-mail messages being sent to and from this address for the purposes of investigating or detecting any unauthorised use of its system and ensuring effective operation. (c) RcTechnix ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
