Profibus Cable: PROFIBUS represents one of, if not the number one, the largest installed bases of fieldbus systems in the world. Using shielded twisted pair constructions, the two main application-specific profiles are PROFIBUS DP, which is optimized for discrete factory automation, and PROFIBUS PA, which is optimized for process automation. Modbus Cable: Modbus has been the standard for interfacing remote I/O and PLCs into the process DCS system for over 20 years. This allows most legacy control systems to interface easily with Modbus