Honeywell MasterLogic-200

Honeywell MasterLogic-200 is a modular programmable logic controller family for machine logic, process interlocks, and sequential or batch control. A system combines a CPU and power supply with a main base, expansion bases, and discrete, analog, temperature, or special function I/O modules. Selected configurations offer redundant CPUs, power supplies, and I/O network paths to improve availability. Communication options include Ethernet, serial links, PROFIBUS-DP, and Modbus through the appropriate interface modules. Programming languages and execution features depend on the CPU; the family includes IEC and non-IEC controller variants. The platform can integrate with Honeywell Experion systems for operator supervision and plant information exchange. Replacement selection should account for the exact 2ML model number, base compatibility, communication interface, and installed firmware, especially where MasterLogic I/O is used with another Honeywell controller.