Product Description:

The RZP01.1-B1 is a communication option module produced by Bosch Rexroth Indramat for integration into the RZP Option Modules series. Installed alongside drive or controller hardware, it adds Interbus S fieldbus communication so distributed I/O stations can be addressed without separate gateways. Within an automation cell, it operates as a local segment master that exchanges process and diagnostic data between the higher-level PLC and connected slave nodes. It is intended for systems that need field-level communication without moving the master function to a separate external module.

Data throughput on the Interbus line reaches 500 kbaud, allowing cyclic telegram updates at millisecond intervals. A communications buffer of 102 bytes absorbs short bursts of traffic and helps prevent frame loss during brief peaks in bus activity. For real-time transfers, the module handles 9 x 16-bit cyclic I/O words, while one additional 16-bit service word is reserved for diagnostics. Up to 512 intelligent or sensor-level devices can be addressed through the master list, and network wiring may be extended to 13 km by combining copper and fiber link segments. The combination of cyclic data and service access supports routine status exchange without interrupting normal bus activity.

The electrical layer uses RS-485 transceivers that tolerate reflections on long cable runs and support a point-to-point span of 400 m between repeaters. A Hamming distance of HD=4 supports reliable frame checking during data exchange. Immunity against industrial electromagnetic noise meets EN 50082-2, and the radio interference level is classified as A1. Power is derived from the host backplane at +5 V and +15 V, so no separate supply wiring is needed. This reduces external wiring and keeps the module installation compact inside the host assembly. The card measures 88 mm in length and 89 mm in width, and the network can be arranged in star, tree, or ring topologies.