Ravi,

I was just researching RS485 chips.  What chip do you recommend ?

Eric

On Monday, July 26, 1999 7:41 AM, Ravi Pailoor [SMTP:chiptech@VSNL.COM] wrote:
> My application is as follows.
>
> I have 70 modules each having RS232 and RS485 drivers, 16C63, DAC 1220,  AD770
5
> and 24LC08. The modules control the current fed to a electro plating rectifier
 in
> 7 banks of 10 each.  The settable current is from 1 Amp to 50 Amps. The non
> linearity of the rectifier responce is taken care by calibration and the value
s
> are stores in the SEEPROM.
>
> These 70 modules spread over 100 meters are connected to a master controller
> based on Z80 which in turn is connected to a PLC.
>
> The PLC sends group commands to the Z80 system and the Z80 in turn sends and
> receives data to and from the 70 modules.
> It is working well in the noisy field environment.
>
> Now this module has become a building block for various industrial application
s.
>