>>Does Mesa already
handle
this protocol?

Peter said that they can get the data into the hardware but that there 
is no driver support for it yet.

I need to get an SSI encoder.

Dave

On 5/24/2011 9:09 PM, Jon Elson wrote:
> Dave wrote:
>    
>> The machine already has Rexroth amplifier cards for the valves that have
>> the dither function built in.   They accept +/- 10 volt analog signals
>> to shift the valve.
>>
>>      
> How convenient!
>    
>> The SSI encoder protocol is out in the public domain.
>> http://en.wikipedia.org/wiki/Synchronous_Serial_Interface
>>
>> The code is either a binary or gray code absolute position.      The
>> interface is about as simple as a serial interface can be.
>>
>>      
> Well, there probably are several ways to attack this.  Does Mesa already
> handle
> this protocol?
>
> Jon
>
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