How many SNMP drivers supports Zenon?

How many SNMP drivers supports Zenon?

Hello everyone,
The manual read:

<<In general, it is recommended that each SNMP agent gets its own SNMP NG driver instance>>

So my question is about the maximum number of drivers in the project. I need up to 600 agents or more, so I am thinking in  multi-project but, what is the limit?

Thanks in advance!