Hi,In a project I have four Progressive Pressing Machine. Each machine with different PLC like Mitsubishi 'Q00UCPU' with 'QJ71C24N-R4', 'FX-3U-16M', 'FX2N-128MR' and Omron 'CJ2M-CPU13' with 'SCU41-V1' module.Now my task is to connect all PLC with KEPWARE Server through OPC-UA.Note: There is no Ethernet Port available and existing RS232 port are all connected to all respective HMI'sIn this scenario, I would like to know, do all the PLC that i have mentioned above supports OPC-UA through Ethernet if i add a new Ethernet module to each PLC. So the data transmission will be faster or else should I buy RS232 serial communication module to communicate through OPC-UA.And also i would like to know, what kind of "Industrial Switch" will be perfect for this application.Kindly suggest a best way to prove myself.Thanks in advance