browsenamespace

Graphically browse OPC DA server name space

Syntax

ItmList = browsenamespace(DaObj)

ItmList = browsenamespace(DaObj,ItmListInit)

ItmList = browsenamespace(DaObj,ItmListInit,true)

Description

ItmList = browsenamespace(DaObj) opens a graphical name space browser for the OPC Data Access Client object DaObj. The graphical interface lets you construct a list of items and return a list of those fully qualified item IDs to ItmList. You can use ItmList to add items to a Group object using additem. The name space is retrieved from the server incrementally, as needed.

ItmList = browsenamespace(DaObj,ItmListInit) lets you specify an initial list of item IDs to augment.

ItmList = browsenamespace(DaObj,ItmListInit,true) loads the entire name space into the dialog box.

Examples

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Browse Local Matrikon Server for OPC DA Items

Connect to the local Matrikon Simulation server and browse for items.

DaObj = opcda('localhost','Matrikon.OPC.Simulation');
connect(DaObj);
ItmList = browsenamespace(DaObj);

Input Arguments

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`DaObj` — OPC DA client
OPC DA client object

OPC DA client, specified as an OPC DA client object.

`ItmListInit` — Initial list of OPC DA items
character vector, string, or cell array

Initial list of OPC DA items, specified as a character vector, string, or cell array that identifies the item IDs. When the browser opens, these items are already included in the selected list.

Data Types: char | string | cell

`true` — Indicator to load entire name space
true

Indicator to load the entire name space, specified as true. Use this option only if your server does not support partial name space browsing.

Data Types: logical

Output Arguments

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`ItmList` — List of OPC DA item IDs
char vector or cell array of char vectors

List of OPC DA item IDs, returned as a character vector or cell array of character vectors. Each character vector indicates a selected OPC DA item ID.