- 75 -- 74 -Communication• Transmission procedure$P/$S: Data writing/Parameter writing command(1) Host → Amplifier (Data writing)SOH STX $ P * * * * * * * * ETX BCCAmplifier ID Host ID Command Data number(parameter address) Data(parameter value)(2) Amplifier → Host (result response)SOH ACKHost ID Amplifier ID• Answers NAK when requested data number (parameter address) or data value(parameter value) is abnormal. Shows that parameter was properly set only whenACK is answered from the amplifier.• No result is answered from the amplifier when amplifier ID is 80h (128).$R: Data reading/Parameter reading command(1) Host → Amplifier (Data reading request)SOH STX $ R * * * * 0 0 0 0 ETX BCCAmplifier ID Host ID Command Data number(parameter address) Data(parameter value)• Set data ‘0000’ when executing data reading command.• When amplifier ID is 80h (128), data reading/parameter reading command is ignored.(2) Amplifier → Host (Result response)SOH ACKHost ID Amplifier ID(3) Host → Amplifier (Request for sending)SOH ENQAmplifier ID Host ID(4) Amplifier → Host (Response of data)SOH STX # R * * * * * * * * ETX BCCHost ID Amplifier ID Command Data number(parameter address) Reading data(parameter value)• Response data when amplifier is powered on is initial request response.• When requested data number (parameter address) is abnormal, ‘0000’ as readingdata (parameter address) is answered.• Check whether the data No. (parameter address) is correct, then use the reading data.(5) Host → Amplifier (Result response)SOH ACKAmplifier ID Host ID(6) Amplifier → Host (Communication completion response)SOH EOTHost ID Amplifier IDENQ: Request for sendingWhen request for sending is sent to the amplifier, response data changes depending onthe status of amplifier. Response data is returned in the priority order below:1 When amplifier is powered on Initial request response is answered.2 When receiving data reading /parameter reading Refer to data reading command processing.3 When the status of amplifier changes Data update request is answered.4 Other cases than the above Communication completion response is answered.• Initial request response is answered to the initial data request for sending after the am-plifier is powered on.• When the amplifier ID is 80h (128), request for sending to the amplifier is ignored.1. When the amplifier is powered on(1) Host → Amplifier (Request for sending)SOH ENQAmplifier ID Host ID(2) Amplifier → Host (Request of data)SOH STX # I 9 9 9 9 0 0 0 0 ETX BCCHost ID Amplifier ID Command Data number Reading data(3) Host → Amplifier (Response of result)SOH ACKAmplifier ID Host ID(4) Amplifier → Host (Communication completion response)SOH EOTHost ID Amplifier ID• When initial response is confirmed, write parameters as necessary.2. When receiving data reading / parameter reading