Does anyone have a known / reliable interface for Allen-Bradley's Data High=
way Plus or Remote I/O Serial Interface?  I have a Two Wire RS-485 applicat=
ion today that I am trying to port over the design to Drive a Two Wire bus =
to DH+ and RIO.  I believe that the differential amplitude is higher than R=
S-485 and the interface is transformer coupled but I do not know the prefer=
red interface circuitry.

Any help would be appreciated.

Thanks,
David


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