com::focus_sw::fieldtalk::MbusAsciiMasterProtocol.openProtocol() com::focus_sw::fieldtalk::MbusRtuMasterProtocol.openProtocol() com::focus_sw::fieldtalk::MbusSerialMasterProtocol.openProtocol() com::focus_sw::fieldtalk::MbusTcpMasterProtocol.openProtocol() com::focus_sw::fieldtalk::MbusRtuOverTcpMasterProtocol.openProtocol()