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Emerson DeltaV (DCS)

DeltaV is connected through DeltaV's OPC UA server, not a dedicated driver

Edge connects to DeltaV's OPC UA server with the OPCUA driver and reads values. Follow Connecting a DCS (OPC UA) for the procedure.

DeltaV is Emerson's DCS. Edge has no DeltaV-specific driver. Like any other DCS, it is connected as DeltaV's OPC UA server → the Edge OPCUA driver.

Verified on real equipment: not yet (0)

The connection between DeltaV and Edge has not been verified on real site equipment. There are no customer installations yet either. Test in a test environment before connecting to a production DCS.

Emerson public information​

Based on the Emerson datasheet.

  • The DeltaV OPC UA Server on the Application Station · ProfessionalPLUS is a COM→UA wrapper around classic OPC DA · A&E · HDA. It needs the OPC UA Activation License VE2200 and classic OPC server licences (VE2223 DA · VE2227 HDA · VE2228 A&E).
  • The PK Controller has a built-in OPC UA server that provides DA only and needs no activation licence.
  • Message signing, 128 · 256-bit encryption and certificates are supported.
  • The default port is not in the datasheet. Get the endpoint URL from the person in charge.

Connection steps​

  1. Turn on the OPC UA server on the DeltaV side. Follow Emerson's manual for how. This document does not cover menus or procedures on the DeltaV side.
  2. Confirm the endpoint URL and port with the DCS administrator. 4840 is only the OPC UA default port.
  3. Get a read-only account and connect with it.
  4. Add the connection on Edge's OPC UA connection registration screen (/ui/connect/opcua).

Detailed explanations of each step and the secure-connection notes are in Connecting a DCS (OPC UA); the fields and NodeId notation are in OPC-UA connection.

Do not use the EMERSON [DELTA-V] entry in the connection list​

The connection registration screen shows an EMERSON [DELTA-V] (DELTAV) entry, but it is a placeholder (stub) that does not collect values.

BehaviourWhen registered as DELTAV
ConnectNot attempted — status is always DISCONNECTED
ReadEmpty value
WriteNot supported

If you have already registered it as DELTAV, register it again as OPCUA.