... are provided by I/O option module. CommunicationRS485, Industry standard ModbusRprotocolModule Option: Ethernet module, Profbus-DP moduleDual RS485 communication ... (Optional): 10M/100M BaseT, MODBUSR TCP/IP Protocol, Data Browsing through HTTP, Sending e-mail automaticallyPROFI-BUS (Optional): ... IIR, Acuvim IIE, model offers 4MB of onboard data logging memory to be used for historical trending. There ...