OPC DA

Neuron can indirectly access the OPC DA server running on Windows OS through the external helper program neuopc.exe. NeuOPC converts the DA protocol to UA protocol and then acquires data through Neuron’s existing OPC UA plug-in, all accessible points of the DA are mapped to the UA “namespace2” and the point The point IDs are consistent with those of the DA.

The NeuOPC component packages can be downloaded from the Project page of NeuOPC (NeuOPC is an open source project under the GPL agreement). For installation and system configuration for remote connection, refer to NeuOPC Installation and NeuOPC Remote Access.

Parameters

NeuOPC Parameters

Parameter Description
DA Host Need to connect to the target host ID, which can be the target IP or Hostname, and this machine can not be set
DA Server The name of the DA server, such as “Matrikon.OPC.Simulation.1”, after filling in the DA Host, you can click the drop-down button to try to get the Server list
UA Port The listening port setting of the UA server, the default 48401
UA User Authorized access user name of UA server, default admin
UA Password Access password of UA server, default 123456

Neuron opcua Parameters

Parameter Description
Endpoint Url The access address of NeuOPC, the default is opc.tcp://127.0.0.1:48401/
Username Authorized username for NeuOPC
Password Access password for NeuOPC

Data Types

  • INT8（SBYTE type）
  • INT16
  • INT32
  • INT64
  • UINT8（BYTE type）
  • UINT16
  • UINT32（also used to represent DATETIME types）
  • UINT64
  • FLOAT
  • DOUBLE
  • BOOL
  • STRING

Address Format

IX!NODEID

IX Namespace index, IX can only be 2 when accessing NeuOPC.

NODEID Node ID, consistent with the string in the UA server.

Examples

Address Data Type Description
1!Bucket Brigade.UInt2 UINT16 Get a datatag of type UINT16; NS is 2, NODEID is Bucket Brigade.UInt2