On Fri, 20 Sep 2019, John Dammeyer wrote:
Date: Fri, 20 Sep 2019 09:22:39 -0700
From: John Dammeyer <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: "'Enhanced Machine Controller (EMC)'" <[email protected]>
Subject: Re: [Emc-users] MESA 7i92H Power
Hi Andy,
-----Original Message-----
From: andy pugh [mailto:[email protected]]
Sent: September-20-19 9:05 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] MESA 7i92H Power
On Fri, 20 Sep 2019 at 16:58, John Dammeyer <[email protected]>
wrote:
What would be best is a copy of 7i92_C11Gx2D or 7i92_R990x2D called
> 7i92_PMDXx2D with the DB-25 pin 14 and 16 operation swapped so the
PWM
> engine is applied to DB-25 pin 16 I/O5 and PWM Direction is applied to
> DB-25 pin 14 I/O 1. Now there may well be some systems out there that
use
> PWM to 10V for spindle motor VFDs and do not use a direction signal so it
> should be possible to use the PWM DIR pin as a general output.
Ah, if you just need to _swap_ pwm and dir with each other, then that is
actually easy.
set the output-type to 4, and they get swapped:
http://linuxcnc.org/docs/2.7/html/man/man9/hostmot2.9.html#pwmgen
That information is for the 7i43 not the 7i92 and I don't believe the 7i92 can
be swapped around like that. The pin file for the 7i92 only allocates two PWM
logic modules, one to each port. The 7i43 is probably more versatile and they
can be allocated differently.
John
All HostMot 2 modules (like PWM) are the same regardless of the hardware
so anything a 7I43 can do a 7I92 can also do.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is designed
for the especial use of mechanical geniuses, daredevils and lunatics."
?? George Fitch, Atlanta Constitution Newspaper, 1916
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Peter Wallace
Mesa Electronics
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