The Vijeo Citect lite license have the following conditions:
1. No Networking (this means they cannot be made redundant or uses clients)
2. No Connectivity (this means no applications can access the CTAPI or OPC Server)
3. Only the OPC Client is supported
4. No additional drivers supported
Vijeo Citect Lite only supports the OPC driver . Multiple OPC Servers can be connected like Schneider Electric OPC Server (OFS) or third party OPC Server. Vijeo Citect Lite is really addressing the OEM marketplace where it is very rare to get two different PLC manufacturers on the same piece of EQUIPMENT. Also there is no networks or upper level connectivity, as it is more of a simple interface to a machine.