The MTU MPU 27 (Micro Processor Unit 27) is a central processing module used in certain MTU electronic architectures for marine applications, responsible for coordinating control and monitoring functions of the propulsion system and associated subsystems. Integrated within the automation and supervision environment (depending on configuration, within MCS/BlueLine assemblies), the MPU 27 acts as the logical core for signal management, operational data processing, and communication with peripheral modules.

In operation, the MPU 27 supports system availability and data consistency by enabling the acquisition and distribution of key values, statuses, and events to operator interfaces (such as displays and panels), while interfacing with I/O and instrumentation modules. This architecture ensures stable system response under service conditions and also facilitates troubleshooting through coherent transfer of system states and diagnostic/event messages.

Designed for installation in MTU cabinets and panels, the MPU 27 communicates with the rest of the electronics via data buses (typically CAN-based in these solutions), ensuring compatibility across system modules and reliable performance in marine environments where robustness, continuous operation, and serviceability are critical requirements.