Read multiple array items from the OPC UA server
FactoryTalk Linx Gateway
supports multiple ways to access OPC UA array data. FactoryTalk Linx Gateway
provides an advanced option to enumerate all elements of array data. When this option is enabled, the client will see namespace entries for all of the items in arrays. The client can then access these items individually, while indexed access of multiple elements is not supported from the enumerated items.When
Tag list and structures/array access
or Custom namespace
is turned on, you can read the following array items:
- All data in an array
- Single or multiple scalars or structured elements using index
- Single scalar or structured element
- Single scalar or structured member from an element as a direct reference tag when the Create additional references for each array element in the OPC UA namespace checkbox is selected.
When
Folders with scalar data
is turned on, you can read the following array items: - Single scalar element
- Multiple elements from a scalar array using indexTIP: The index range should be in the format of "Starting element number, a colon and the ending element number". For example, "3:8". Multi-dimensional arrays are not currently supported using the index capability.
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