Metso D202275 ACN Communication / Gateway Node
The Metso D202275 is a specialized high-performance Communication and Processor Module within the ACN (Automation Cloud Node) platform of the Metso DNA (now Valmet DNA) automation system.
It is part of the newer generation of “D-series” hardware designed to provide robust connectivity and high-speed processing for industrial Internet of Things (IIoT) applications.
1. Introduction
The D202275 functions as an ACN Communication Node or Field Interface Unit.
It is designed to facilitate high-bandwidth communication between the process controllers (ACN RT/MR) and the wider plant network or third-party subsystems.
While standard processors focus on control logic, the D202275 is often tasked with managing complex data traffic, protocol conversion, and serving as a secure gateway for Valmet’s industrial internet services.
2. Technical Parameter Table
| Parameter | Specification |
| Model Number | D202275 |
| Product Type | ACN Communication / Gateway Node |
| Processor | Multicore Industrial CPU |
| Memory | 2 GB to 4 GB RAM (Revision dependent) |
| Storage | High-capacity industrial Flash |
| Network Interfaces | 2x Gigabit Ethernet (ACN), 1x Dedicated Service Port |
| Protocol Support | OPC UA, Modbus TCP, Profinet, Ethernet/IP, MQTT |
| Cybersecurity | Integrated hardware-based encryption / Secure Boot |
| Operating Temp | -20°C to +70°C |
| Mounting | DIN Rail or ACN Chassis |
3. Related Models
The D202275 is often the communication hub in a rack containing:
D201376: The primary real-time controller (ACN RT).
D201134: 16-channel Analog Input module.
D201220: Multi-bus communication interface.
ACN CS: Communication Server hardware for plant history and databases.
4. Application Cases
IIoT Gateways: Transmitting real-time process data to cloud-based analytics platforms for predictive maintenance.
Subsystem Integration: Acts as the primary bridge to integrate large third-party packages (like a turbine control system or specialized chemical skid) into the Metso DNA environment.
Secure Remote Access: Providing a hardened point of entry for remote diagnostics and software updates.
Data Concentration: Gathering data from hundreds of remote I/O points across a wide area (e.g., a large-scale solar farm or water distribution network) and condensing it for the main DCS.
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| EMERSON | VE4001S2T2B4 |
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| EMERSON | 1C31233G04 |
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5. Product Advantages and Features
Gigabit Connectivity: Supports higher data throughput than legacy D200-series modules, making it suitable for modern, data-intensive industrial networks.
Enhanced Security: Designed with “Security by Design” principles, featuring built-in firewalls and encrypted communication channels to protect the process network.
Protocol Versatility: It can simultaneously speak multiple industrial “languages,” allowing it to consolidate data from various brands of equipment (Siemens, Rockwell, etc.).
Fanless Reliability: Despite its high processing power, it remains passively cooled, reducing moving parts and increasing the lifespan in dusty or harsh environments.
Seamless Integration: Fully compatible with Valmet DNA software, allowing for “drag-and-drop” configuration of communication tags.
6. Other Models in the Same Series
The D202xxx tier is the advanced connectivity series for Valmet DNA:
D202276: A variant often configured for redundant communication paths.
D201241: High-precision Temperature Input module.
D201150: 16-channel Digital Output (Relay) module.
ACN MR: The Master Redundant configuration utilized for the highest level of plant availability.
D202275