Modbus OPC Server | Modbus TCP | Modbus RTU | Modbus ASCII Server | Utthunga Are you looking for an OPC server for your Modbus PLCs and devices? Utthunga's Modbus OPC server provides secure and realiable connectivity between Modbus RTU/TCP/ASCII PLCs and OPC compliant client applications. Find out more on what we do! https://utthunga.com/products/opc/modbus-server/