system.opc.browseSimple
Allows browsing of OPC servers in the runtime returning a list of tags. browseSimple() takes mandatory parameters, which can be null, while browse() uses keyword-style arguments.
The spelling on the opcServer and device parameters must be exact.
system.opc. browseSimple( opcServer, device, folderPath, opcItemPath )
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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.
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Returns
OPCBrowseTag[] - An array of OPCBrowseTag objects. OPCBrowseTag has the following functions: getOpcServer(), getOpcItemPath(), getType(), getDisplayName(), getDisplayPath(), getDataType().
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Scope
All
#This example will print out the the OPC item path for each item in a specific folder,
#Browse Ignition's OPC-UA Server. This can be changed to match any connected OPC server.
server
=
"Ignition OPC-UA Server"
#Focus on the "SLC" device connection. This must match a valid device connection in the OPC server.
device
=
"SLC"
#Specify that the folder path should contain "B3".
folderPath
=
"*B3*"
#This example is not filtering on a specific OPCItemPath, so it pass Python's None for this parameter
opcItemPath
=
None
#Call browseSimple and store the results in a variable. Note that it may take some time to complete the browse.
OpcObjects
=
system.opc.browseSimple(server, device, folderPath, opcItemPath)
#For each returned address, print out the
for
address
in
OpcObjects:
print
address.getOpcItemPath()