OPC tags multiplexing?

I have 10 SNMP enabled devices (amongst other things) and I need to display their status in some WinCC screens. I have a Siemens SNMP-OPC server (which works fine) and WinCC Prof V11 SP2 (512 tags).

Each SNMP device has it's own screen, so in theory I do not need the tags for all 10 devices in the same time. I am running out of tags, mainly because each piece of information I want to display from the SNMP devices eats up 10 tags (one for each device).

Is there a way to multiplex OPC tags?

Thank you,

Ionut Tomita

I am using WinCC Professional Runtime (V11 SP2)