The ‌ABB DSPU131 3BSE000355R1‌ is a high-performance communication interface module designed for ABB’s AC 800M distributed control systems. As part of the MasterBus 200 (MB200) protocol family, this industrial-grade processor unit enables seamless integration between DCS controllers and field devices through redundant Profibus DP networks. The ‌DSPU131 3BSE000355R1‌ features dual-channel optical isolation and 12Mbps data throughput, making it essential for mission-critical process control applications in power generation and oil & gas industries.