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The Redundant PROFIBUS Communication Module (FBM222) provides an interface between the Foxboro Evo system and PROFIBUS-DP/PA slave devices, including motor drives, I/O modules, and field I/O devices. The FBM222, which can be used in a single or redundant configuration, supports two PROFIBUS links with a maximum of 125 slave devices per port when repeaters are utilized. The FBM222 connects the slave devices to the versatile and robust Foxboro Evo control system via Distributed Control Interface (DCI) blocks. Physical PROFIBUS-DP wiring is in accordance with Electronic Industrial Association (EIA) standard RS485. There are multiple ways to connect FBM222s installed as a redundant pair to a PROFIBUS-DP network. When the PROFIBUS segments are single networks as shown in Figure 1, an FBM228/FBM222 Redundant Adapter (P0922RK) connects a single termination cable to the redundant pair. The other end of the cable is plugged into a termination assembly (TA), which provides connections for the two network segments (Figure 1).