Application and functions
1.6 Performance data
CP 443-1 OPC UA
16 Operating Instructions, 01/2017, C79000-G8976-C427-02
Configuration limits - communication
OPC functions - OPC UA server
In server mode the CP supports the following configuration limits:
●
Number of connections to OPC UA clients
Maximum of 10 connections to OPC UA clients
●
Number of items in the CPU data area
For the variables in the data area of the CPU to be written or read as items, the following
maximum values apply:
– Maximum number: 64000 Items (symbols / variables)
– Maximum memory requirements 64000 bytes
The maximum memory area is divided among the variables used for OPC UA. As a
consequence the following maximum configuration limits apply to the different data types
of the variables:
– 64000 variables of the data type BOOL
or
– 64000 variables of the data type BYTE
or
– 32000 variables of the data type WORD
or
– 16000 variables of the data type DWORD
or a combination of the maximum values listed, for example:
– 32000 variables of the data type BYTE
+ 8000 variables of the data type WORD
+ 4000 variables of the data type DWORD
●
Number of supported subscriptions
– Maximum of 5 subscriptions per session
– In total maximum of 50 subscriptions at the same time
●
Number of items per subscription
– Maximum of 900 items per subscription
– Maximum of 45000 items over all subscriptions
●
Memory depth for MonitoredItems
Queue size 2
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