Description
Metso D201776 ACN PO | Metso DNA Automation Computer
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | D201776 |
| Manufacturer | Metso Automation |
| Product Family | Metso DNA / ACN |
| Node Designation | ACN PO |
| Product Type | Industrial computer / process-operation node |
| Primary Role | Process operation and automation-server functions |
| Supply Voltage | 24 VDC reported for ACN PO DC variant; verify nameplate |
| Network | Ethernet-based DNA network |
| Network Architecture | Redundant Ethernet architecture supported by Metso DNA |
| Installation | ACN cabinet / rack environment |
| Operating System | Windows-based environment reported for Metso DNA ACN computers |
| Software Environment | Metso DNA |
| Exact CPU / RAM | Configuration-dependent; verify hardware label |
| Exact Ethernet Port Configuration | Verify against installed hardware |
| Exact Dimensions | Verify against equipment drawing |
| Exact Operating Temperature | Verify against the applicable hardware revision |
Metso DNA technical documentation identifies ACN PO hardware as an industrial computer/node used for DNA Operate and related server functions. Older technical material also describes ACN PO computers as Windows-based systems.
Product Introduction
The Metso D201776 ACN PO is associated with the ACN PO class of industrial computers used in Metso DNA automation systems. Unlike a conventional PLC CPU or field I/O module, an ACN PO node provides the computing environment for higher-level process-operation and automation services. Metso DNA documentation describes ACN PO hardware as a platform for DNA Operate and other system services, with the physical node installed in the automation or rack-room environment.
For maintenance teams, the important point is that the D201776 ACN PO should not be evaluated only by processor speed, memory capacity, or connector count. Its practical compatibility depends on the Metso DNA software environment, node role, network configuration, installed services, and the configuration of the surrounding ACN architecture. The exact D201776 hardware revision also matters because publicly available records do not provide a sufficiently complete OEM configuration sheet for every electrical and computer specification.
D201776
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
Replacing an ACN PO node in an operating Metso DNA system is closer to replacing an industrial server than replacing a standard PLC CPU. The replacement has to reproduce the expected software environment and network identity, not merely provide equivalent computing hardware. Metso DNA architecture allows ACN nodes to perform different server functions, and larger systems can distribute functions such as operator interface, alarm/event handling, backup, and engineering services across multiple computers.
Typical Applications
- Metso DNA process-control systems — ACN PO nodes can host process-operation and related automation services.
- Control-room operation — DNA Operate can be physically located on an ACN PO industrial computer.
- Process-industry automation — Used within larger distributed control architectures where multiple ACN nodes perform different system functions.
- Legacy Metso DNA installations — Particularly relevant where the existing system still depends on original ACN hardware and software.
Technical Pitfalls to Avoid
- Do not treat D201776 as a generic PLC CPU.
It belongs to the ACN computer/server layer of the Metso DNA architecture. Substituting a generic industrial PC without validating the DNA environment can create software, licensing, driver, or network problems. - Verify the node’s actual software role.
ACN PO computers may host DNA Operate and other services depending on system architecture. The replacement must match the function assigned to the original node. - Preserve network configuration.
Metso DNA uses name-based communication and distributed database architecture. Network identity, node configuration, Ethernet topology, and redundancy settings should be documented before removing the existing computer. - Do not assume every has identical hardware.
Public records identify the model as an ACN PO unit but do not establish a complete CPU, memory, storage, port, and operating-system configuration for every hardware revision. - Back up the existing system before replacement.
Preserve the DNA application, configuration files, node settings, licensing information, network parameters, and any site-specific service configuration. - Check the complete identification label.
may be insufficient for an exact hardware-to-hardware replacement. Record the full product designation, hardware revision, serial information, installed software version, and cabinet location.
Related Products
- Metso D201505 ACN C20 — Another ACN computer designation; its role and hardware configuration differ from the ACN PO class, so it should not be assumed to be a direct substitute.
- Metso D202038 ACN PO — Reported as another ACN PO-related designation; verify hardware revision and system role before considering substitution.
- Metso D200175 RT Node PC — Different ACN/network-node designation intended for a different system role.
- Metso IOP114 — I/O/interface hardware rather than an ACN PO computer.
- Metso IOP351 — Distributed-control interface hardware used at a different layer of the automation architecture.
- Metso A413016 NCU2 — Valmet/Metso control-system processor designation; system generation and software compatibility must be checked before considering replacement.
- Metso A413075 FBC — Field Bus Controller; serves a fieldbus-related role rather than the ACN PO server function.
Procurement and Replacement Note
For a replacement, the minimum verification package should include the complete identification, hardware revision, installed Metso DNA version, node role, network configuration, storage/backup arrangement, and cabinet location. Do not approve a substitute based solely on the ACN PO designation or reported 24 VDC supply.
The available public documentation confirms the ACN PO role within the Metso DNA architecture, but it does not provide enough reliable evidence to publish exact CPU, RAM, storage, connector, temperature, or dimensional specifications for every configuration. Those values should be confirmed from the physical nameplate, original system documentation, or the applicable Metso/Valmet hardware documentation before procurement.
