The OPC Unified Architecture client (OPC UA client) allows the TM262L20MESE8T, the TM262M25MESS8T and the TM262M35MESS8T to exchange data with remote OPC UA servers.
NOTE: At least one Ethernet interface (Ethernet_1 or Ethernet_2) must be available on the controller and Ethernet traffic not blocked by the firewall.
The OPC UA client can connect with up to 5 servers concurrently. Each server can exchange 5000 items, with a maximum of 15000 items for all the servers.
The OPC UA client provides:
othe encryption of messages on the transport layer
othe signing of messages on the transport layer
osupport of None, Sign and Sign and Encrypt security modes
osupport of Binary message encoding
osupport of None, Basic 256 security policies
othe authentication by user name and password or X.509 certificate on the application layer
othe authorization to read and write value of a node
othe authorization to browse the information model based on the access rights of the information model, the user or the user’s role
othe supports of anonymous, user-name and certificate user authentication modes
Access to OPC UA connections and data is controlled by user rights. Refer to Users and Groups in the EcoStruxure Machine Expert Programming Guide.
The following table describes the OPC UA services supported by the client:
|
OPC UA Service |
Description |
|---|---|
|
Session |
Allows the client application to establish a connection to a server |
|
Data Access |
Allows the client application to access and modify information regarding each item of data |
