The OPC client browsable namespace provided by the server represents a description of all process values an OPC client can query from. It can be distinguished between three different types of namespace elements.
For detailed information, please refer to Namespaces.
The manual, "static" namespace is specified in the configuration user interface of the server. The user who administrates the server, creates channels, devices, tag groups and tags. The user specifies the settings of the communication lines, the PLC and the data sources to be provided to the client.
For detailed information, please refer to Static, Manually Defined Namespace.
This namespace contains system tags, which are used to provide status feedback on the server running. The client simply creates items of these tags and thereby retrieves the server status directly in the client application. The system status namespace shows the system date, system time, uptime, project path, number of tags, number of tags active in the clients and the number of clients connected.
For detailed information, please refer to System Status Namespace.
MEWTOCOL OPC Server Compatibility Namespace
A MEWTOCOL OPC Server (the predecessor of this server) compatibility namespace is also provided. The user configures the communication settings, which are common for the communication lines (serial or Ethernet). To use this namespace, the OPC client has to create the items such that they follow a certain syntax. The item path can be adapted to the specific needs.
For syntax regulations and restrictions, please refer to MEWTOCOL OPC Server compatibility namespace.