Re:pncconf - feature requests

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14 years 7 months ago #18510 by BigJohnT
Replied by BigJohnT on topic Re:pncconf - feature requests
As soon as someone explains them I can add them to the manual but the man pages give me a headache... so Seb will have to do that.

John

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14 years 7 months ago #18511 by PCW
Replied by PCW on topic Re:pncconf - feature requests
The minlimit an maxlimit are bounds on the pn value (in this case the analog out value)
fullscalemax is the scale factor

These are by default set to the analog in or analog range (most likely in volts)

So for example on the 7I77 +-10V analog outputs, the default values are:

minlimit -10
maxlimit +10
maxfullscale 10

if you wanted to say scale the analog out of a channel to IPS for a velocity mode servo (say 24 IPS max)
you could set

minlimit -24
maxlimit +24
maxfullscale 24

if you wanted to scale the analog out of a channel to RPM for a 0 to 6000 RPM spindle with 0-10V control

you could set

minlimit 0
maxlimit 6000
maxfullscale 6000
(this would prevent unwanted negative output voltages from being set)

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14 years 7 months ago #18513 by cmorley
Replied by cmorley on topic Re:pncconf - feature requests
Thanks Peter.

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14 years 2 months ago #22829 by cmorley
Replied by cmorley on topic Re:pncconf - feature requests
Peter
I'm playing with the 7i73 pendant card.
for analog input using a potentiometer what resistance is recommended?
I am interested in seeing if it works well for adjusting overrides for instance.
Thanks

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14 years 2 months ago #22831 by PCW
Replied by PCW on topic Re:pncconf - feature requests
Anything from 1K to 10K (between 3.3V and ground) should do

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14 years 2 months ago #22832 by cmorley
Replied by cmorley on topic Re:pncconf - feature requests
like this :

analogin
|
\/
+3.3
ground
POT

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