Kirk, 

Thanks for the reply. Are you suggesting that I do something like you did but 
in 
reverse somehow to read the voltage with EMC? I understand that the usb port 
can 
handle analog 0-5v inputs from a joystick. Perhaps something that would scale 
the 
0-220vac to 0-5vdc that I could somehow use in EMC with a scaler... dunno I'm 
thinking out loud right now so anyone have any simple ideas please jump in...

Thanks
John

On 25 Dec 2007 at 11:18, [EMAIL PROTECTED] wrote:

> 
> If you you just need one channel of ADC, my DAC setup:
> 
> http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/
> 
> could be modified to run an ADC like the LTC1286:
> 
> http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1155,C1001,C
> 1158,P1445,D2760
> 
> It would take up two parallel port outputs and one input and update at
> servo-thread speeds.
> 
> On Tue, 2007-12-25 at 07:37 -0600, John Thornton wrote:
> > Anyone use the modbus serial card with EMC2? It has 4 bit analog
> > input that could tell me my arc voltage... Also the control pendant
> > they sell could be used with the modbus card... Any drawbacks to
> > using this?



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