Can serport be used to supply +-10 v pwm for servo drive control? Is the
voltage output controllable? Wiki says 232 voltage can be +-13 or +- 24 so
I think voltage could be an issue.
I got the serport docs here ,
http://www.linuxcnc.org/docs/html/man/man9/serport.9.html
Is there anything else I nee
No, That is not going to work. PWM is where to send a square wave but
very the duty cycle of the wave is resolution of at least one part in 256
or better to one part in 1024.
If for some reason all you had was a serial port them you build a little
device using say, maybe an Arduino-nano that re
On Friday 02 February 2018 21:28:31 jeremy youngs wrote:
> Can serport be used to supply +-10 v pwm for servo drive control? Is
> the voltage output controllable? Wiki says 232 voltage can be +-13 or
> +- 24 so I think voltage could be an issue.
> I got the serport docs here ,
> http://www.linuxcn
Gene, just expanded to dual par ports, and am eliminating optos from my
stepper drives with a direct via db25 Bob . My drive is +-10 and I do have
a Chinese opto'd bob that has a pwm , but it is not bi-directional . And I
don't really want to put a flip flop relay in the output , so I'm still
rathe
On Saturday 03 February 2018 00:26:33 jeremy youngs wrote:
> Gene, just expanded to dual par ports, and am eliminating optos from
> my stepper drives with a direct via db25 Bob . My drive is +-10 and I
> do have a Chinese opto'd bob that has a pwm , but it is not
> bi-directional . And I don't rea
On Fri, 2 Feb 2018 21:28:31 -0500
jeremy youngs wrote:
> Can serport be used to supply +-10 v pwm for servo drive control? Is the
> voltage output controllable? Wiki says 232 voltage can be +-13 or +- 24 so
Usually it is used as an on/off signal and only duty cycle is important.
---
> On 3 Feb 2018, at 03:28, jeremy youngs wrote:
>
> Can serport be used to supply +-10 v pwm for servo drive control?
I am going to disagree with the other responders who appear not to have read
the hal_serport docs and say “maybe” depending on the required frequency and
resolution.
With
Andy, it's a +-10 analog servo drive, tach feedback 140 dc 25 amp max . I
think all it needs is bipolar ten volts of any flavor . I have had my and y
up on this machine for 5 years and I really would like to get the spindle
and z under control, I just adapted a 3 kw brown beverie servo motor to
thi
