OPC Interface Service
The OPC Interface Service (OPCIS) is a specialized CygNet current value service that provides connectivity of CygNet Software to a computer using the OPC Data Access (DA) or OPC Historical Data Access (HDA) specification-compliant server. The OPCIS is an OPC client associated with an external OPC server. It can have a one-to-one or one-to-many relationship with OPC servers through OPC groups. OPCIS features include:
- Retrieval of current values for up to 500,000 data points from an OPC server
- Write data to OPC servers
- Connect to local or remote OPC servers
- Configurable update rate for all OPC points
- Grouping for custom update rates and point processing
CygNet supports three OPC servers: a CygNet OPC (DA) Server, a CygNet OPC HDA Server, and a CygNet OP UA Server.
See OPCIS vs OPC EIEs for a feature-by-feature comparison of the OPCIS with the OPC EIEs (OPC EIE, OPC Comm EIE, OPC Lufkin EIE, and OPC Weatherford EIE) to help you decide which OPC option best suits the requirements of your enterprise.
See OPC Interface Service (OPCIS) for more information.
Read the following topics to learn more about communication between the OPCIS and an OPC Server, OPCIS points, OPCIS groups, an OPCIS health check, how to set up an OPCIS, and writing to an OPC server.
Context Menu Options
The following table lists and describes the context menu options that display when you right-click in the OPCIS pane.
| Option | Description | Shortcut |
|---|---|---|
|
Point Properties |
Click to access the Point Properties dialog box containing the Point Properties for the selected point including current value, point state details, point attributes, status bit details, and additional options. |
|
|
Edit Point Value |
Select to edit the point value for the selected point. |
|
|
Value History |
View the History Values for a point. |
|
|
Point Configuration |
Select to access the Properties for Point dialog box, containing the PNT properties editor for the selected point. |
|
|
Facility Configuration |
Select to access the Properties for Facility dialog box, where you can edit Facility properties for the point. |
|
|
View By
|
Sort the list of points by facility, long point ID, point ID, or UDC.
|
|
|
Jump To <point or item>… |
Jump to selected point or item. The sort column is based on the View By choice. Shortcut is Ctrl+J. |
Ctrl+J |
More:
OPCIS-OPC Server Communication
