Access data using OPC

To connect to the Communication Driver with an OPC client application, be aware of the following parameters:

node name

The computer name identifying the node where the Communication Driver is located. Only required for remote access.

program name (ProgID)

The name (Programmatic IDentifier) of the specific server instance (e.g., OI.ABCIP_0001.1).

group name

An OPC group defined and created by the client. The device group is used as the OPC access path.

device group

A device group as defined on the Communication Driver. If omitted, the default device group is assumed.

link name

The hierarchy of nodes names, based on the node name configured in the OI Server Manager.

item name

The specific data element. This can be the device item name or the item reference.

The combination of the link name and item name form the OPC data path for any OPC client to access the data in the Communication Driver.

If the item specified is not valid for the device location, the Communication Driver does not accept the item, returns bad quality, and generates an error message in the logger.