In theory, the OPC Server supports a Maximum of 1000 Devices, a Maximum of 50,000 Objects/Device, and a Maximum of 80 properties/Object. So theoretically it supports 40 Million properties.

In practice, we do not recommend that you use this software for more than approx. 10,000 points (values). If you need monitor more than 10,000 points, you should get two OPC Servers.