The ROLLS-ROYCE SLIO 02 (Serial Link Input/Output) is a specialized communication and control interface module designed for the MAN (Marine Automation Network) environment. This unit acts as a critical node within the Rolls-Royce/MTU automation architecture, facilitating high-speed data exchange between engine-side sensors and the centralized vessel management system via the CAN (Controller Area Network) bus.
Product Overview
The SLIO 02 module is engineered for high-density signal acquisition in marine propulsion systems. It serves as a distributed I/O station that collects analog and digital data from the engine and converts it into CAN-compliant telegrams. This architecture reduces complex wiring looms by allowing multiple sensors to communicate over a single twisted-pair network, ensuring high data integrity even in electromagnetically noisy environments.
Technical Specifications (Datasheet)
| Feature | Specification |
| Model Number | SLIO 02 |
| Network Protocol | CAN / MAN Bus Architecture |
| Input Voltage | 24 VDC (Typical Marine Supply) |
| Communication Speed | Up to 1 Mbit/s (Configurable) |
| I/O Capacity | Configurable Analog and Digital Channels |
| Housing Material | Robust Aluminum/Industrial Grade Polymer |
| Mounting | DIN Rail or Integrated Engine Casting |
| Protection Rating | IP20 (Cabinet) / IP65 (If housed in specialized box) |
Key Technical Features
- CAN Bus Integration: Utilizes the robust CAN protocol to ensure error-free transmission of critical engine parameters like oil pressure, coolant temperature, and RPM.
- Distributed Intelligence: Capable of localized signal processing and alarm limit monitoring, reducing the computational overhead of the main ship controller.
- Marine-Grade Durability: Specifically tested for high-vibration resistance (G-rated) and salt-mist endurance, meeting the standards of major classification societies.
- Plug-and-Play Diagnostics: Features onboard status LEDs for network health (RUN/ERR) and individual I/O status, simplifying field maintenance.
Country of Origin
Country of Origin: Norway / United Kingdom (Rolls-Royce Marine Division)
Primary Application Fields
The SLIO 02 is a staple in advanced maritime and offshore power systems, including:
- Rolls-Royce Bergen Engines: Monitoring and control of gas and diesel prime movers.
- Integrated Bridge Systems: Interfacing engine data with navigation and alarm displays.
- Thruster Control: Managing signal feedback for azimuth and tunnel thrusters.
- Offshore Winch Systems: Providing serial communication for heavy-duty deck machinery.
Operating Instructions
- Network Addressing: Prior to installation, set the unique Node ID using the hardware address switches to ensure the module is recognized by the MAN Controller Network.
- Termination: Ensure that the CAN bus is properly terminated with 120-ohm resistors at both ends of the trunk line to prevent signal reflection.
- Power Sequencing: Connect the 24V redundant power supply. Observe the “Power” LED to confirm stable voltage within the operating range.
- Shielding: Use shielded twisted-pair (STP) cabling for the CAN lines and ensure the shield is grounded at a single point to prevent ground loops.
- Firmware Verification: Ensure the module firmware version is compatible with the version running on the master Ship Automation System (SAS).


