The DPB-Buscontroller serves as the central communication interface between the DPC‑IO (DPC-Controller) and the BACring modules.
Via the two ring bus ports A and B, the DPB-Buscontroller communicates with all connected ring bus devices. In doing so, data exchange with up to 2,500 data points is possible. The DPB-Buscontroller is available both as a standalone version and as a redundant system (primary/secondary).
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If an event message occurs at a bus device, this is reported to the DPB-Buscontroller in the form of an input level change. The “polling broadcast function” of the BACring protocol ensures that the message is reported to the DPC-Controller within 1.5 seconds, regardless of the ring bus size (number of integrated bus devices).
A DPC-Controller can communicate with up to four DPB-Buscontrollers, enabling a maximum BACring system size of 4 × 2,500 data points and a bus length of up to 4 × 5,000 m. The connection between the DPC-Controller and the DPB-Buscontrollers is established via the DPC-IO coupling module, which serves as the central communication and power supply interface.
