I have a project I will be bidding on that has 74 nodes (PLCs) on a Modbus Plus Network. These nodes will be converted one at a time to MB Ethernet which will work with the OPC-UA server just fine. My question is what is the best way to communicate with these nodes till then. I want to run the Ignition system on Linux which would pose a problem with an OPC such as Kepware talking to the PLCs. Can I run Kepware as an OPC-UA server then have Ignition talk with that.
My thoughts are this config.
Server Class BOX (16G RAM) running ESX.
1 VM as Ignition running on linux
1 VM as MySQL running on linux
1 VM as OPC server running on XP-PRO
Any feedback would be appreciated.