Description
Allows browsing of the OPC servers in the runtime, returning a list of tags.
This function accepts keyword-style invocation. See also: Functions / Keyword Invocation
Syntax
system.opc.browse(opcServer, device, folderPath, opcItemPath)
Parameters
String opcServer - The name of the OPC server to browse
String device - The name of the device to browse
String folderPath - Filters on a folder path. Use * as a wildcard for any number of characters and a ? for a single character.
String opcItemPath - Filters on a OPC item path. Use * as a wildcard for any number of characters and a ? for a single character.
Returns
OPCBrowseTag[] - An array of OPCBrowseTag objects. OPCBrowseTag has the following functions: getOpcServer(), getOpcItemPath(), getType(), getDisplayName(), getDisplayPath(), getDataType().
Scope
All
Examples
Example 1: Browse every OPC server
tags = system.opc.browse()
for row in tags:
print row.getOpcServer(), row.getOpcItemPath(), row.getType(),
print row.getDisplayName(), row.getDisplayPath(), row.getDataType()
Example 2: Browse Ignition OPC-UA
tags = system.opc.browse(opcServer="Ignition OPC-UA Server")
Example 3: Browse Specific Device
server = "Ignition OPC-UA Server"
tags = system.opc.browse(opcServer=server, device="Dairy Demo Simulator")
Example 4: Browse Specific Folder Path (not OPC item path)
server = "Ignition OPC-UA Server"
tags = system.opc.browse(opcServer=server, folderPath="*Overview/AU 1*")