The RZP Option Module Series Interbus S from Bosch Rexroth Indramat is an Optional Module for the RD500 Drive Series, and is an effective card for data transfer.
Using a RS 485 twisted & shielded 5-conductor cable, the fast transfers have a Hamming distance of HD=4. The RZP01.1-B1's power supply provides +5V and +15V on the control card.