Re: [Emc-users] Mesa 7i47S issue

2017-06-20 23:35 GMT+03:00 Peter C. Wallace : > >> This is not unexpected, the card is probably fine > > The 7I47S has differential inputs, They are not designed to interface with > single ended signals but can if needed. > > The only way the inputs will work reliably is to have

Re: [Emc-users] Mesa 7i47S issue

On Tue, 20 Jun 2017, Andrew wrote: Date: Tue, 20 Jun 2017 22:33:43 +0300 From: Andrew <pkm...@gmail.com> Reply-To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge

Re: [Emc-users] Mesa 7i47S issue

2017-06-17 20:15 GMT+03:00 Andrew: > 2017-06-17 18:34 GMT+03:00 Danny Miller: > >> Similarly the inputs aren't true differential, they're an optoisolator's >> input diode with a series resistor to produce the rated trigger current >> when +5v is applied + to -. Due to some esoteric details in

Re: [Emc-users] Mesa 7i47S issue

2017-06-17 18:34 GMT+03:00 Danny Miller: > That's not a true differential output. It's an optoisolator's two output > terminals. Since they're isolated, neither terminal is tied to a gnd or + > so you can connect it high or low. > > When tripped, it conducts current (supplied externally) from +

Re: [Emc-users] Mesa 7i47S issue

That's not a true differential output. It's an optoisolator's two output terminals. Since they're isolated, neither terminal is tied to a gnd or + so you can connect it high or low. When tripped, it conducts current (supplied externally) from + to -. It cannot generate its own voltage,

Re: [Emc-users] Mesa 7i47S issue

Hello, The stepper drive has open collector alarm output. Can I use a differential RX input on 7i47s to read it? Thanks Andrew ​ -- Check out the vibrant tech community on one of the world's most engaging tech sites,

Re: [Emc-users] Mesa 7i47S issue

2017-04-06 22:43 GMT+03:00 Peter C. Wallace: > > As far as I can tell from the source the svst1_4_7i47S does put stepgen 0 > at > TX4,TX5 Stepgen 1 at TX6,TX7, stepgen 2 at TX0,TX1 and stepgen 3 at TX2,TX3 > Right! That's what I observed. Err... now I see that it's in the manual, J1 pinout..

Re: [Emc-users] Mesa 7i47S issue

users@lists.sourceforge.net> > Subject: [Emc-users] Mesa 7i47S issue > > Hello! > > I've been testing 7i80 (7i80hd_16_svst1_4_7i47s.bit) with 7i47S. > According to the manual and hm2 load report I should have stepgen0..3 at > TX0...TX7 outputs. > But what I seem to have is

[Emc-users] Mesa 7i47S issue

Hello! I've been testing 7i80 (7i80hd_16_svst1_4_7i47s.bit) with 7i47S. According to the manual and hm2 load report I should have stepgen0..3 at TX0...TX7 outputs. But what I seem to have is stepgen0..1 at TX4...7, stepgen2..3 is at TX0..3. This is pretty confusing. Or am I missing something?