Re: Cheap DRO system using digital scales and a PC

Wilfried,

If its really 24bits, then it isnt the standard digimatic spec.
I found it on Don Lancasters site tinaja.com

and from Mariano's email of the caliper specs(thanks!).

-Lee



--- In CAD_CAM_EDM_DRO@egroups.com, "Wilfried Fedtke"
<wilfried.fedtke@t...> wrote:

> Hello,
>
> i try to connect my digital scale with the computer. My digital

scale

> looks like that of http://www.guanglu.com.cn/Digital%20Height%

20Gage%

> 20&%20Scale%20Unit.htm.
> I have gotten following description to my digital scale:
>
> Working of the interface: synchronus serial
> Data: Binary code, 24 bits, each datum will send twice
> The cycle is 300 ms (or 20 ms in fast reading state)
> transmitting time 0,5 ms
> Pulse range of data: Datum level <=0,2 V , level "1" >= 1,3 V
> Clock pulse: CP 90 kHz, effective for high power level
> wires: negative power, clock pulse, data, positive power.
> > To be read the data over the serial interface, it is very

difficult

> since the data-transfer takes place synchronized.
> I want to try to read the data over the parallel interface.
>