String Prcss_ALL_Read(){
  String str = "";
  char formattedNumber[5];  // 4자리 숫자 + 널 종료 문자
  float factor = 1.0f / AI_AVG_SIZE;

  str += "AI?:";
  for (int i = 0; i < Size_AI; i++) {
    float sum_AI = 0;
    for(int j = 0; j < AI_AVG_SIZE; j++) {
      sum_AI += (float) Recent_AI[i][j] * factor;
    }

    sum_AI *= 50.0f; // convert the sum to an integer representation, Transfer data max(0xFFFF): 65,535. Each data max(10bit ADC): 1024. 1024 x 50 = 51,200
    unsigned int integer_part = (unsigned int)sum_AI;

    //sprintf(formattedNumber, "%04X", Values_AI[i]); // 4자리로 고정된 형식의 문자열 생성
    sprintf(formattedNumber, "%04X", integer_part); // 4자리로 고정된 형식의 문자열 생성
    str += formattedNumber; // 형식화된 문자열 추가
    str += ',';
  }
  str += RcvOK;
  
  str += "DI?:";
  
  sprintf(formattedNumber, "%04X", Values_DI);
  str += formattedNumber;
  str += ',';
  str += RcvOK;

  str += "PV_1?:";
  for (int i = 0; i < RS485_1_Rcv_size*2; i++) {
    int rcv = int(RS485_1_Rcv_PV[i/RS485_1_Rcv_size]);

    sprintf(formattedNumber, "%04X", RS485_1_Values_PV[i] * rcv);
    str += formattedNumber;
    str += ',';
  }
  str += RcvOK;


  str += "SV_1?:";
  for (int i = 0; i < RS485_1_Rcv_size*2; i++) {
    int rcv = int(RS485_1_Rcv_SV[i/RS485_1_Rcv_size]);

    sprintf(formattedNumber, "%04X", RS485_1_Values_SV[i] * rcv);
    str += formattedNumber;
    str += ',';
  }
  str += RcvOK;

  str += "INIT?:";
  sprintf(formattedNumber, "%04X", ((unsigned int)(Init_AO | Init_MC9)));
  str += formattedNumber;
  str += ',';
  str += RcvOK;

  return str + FIN;
}

String Prcss_DO_Write(unsigned int data[], int dataSize){
  String str = "DO!:";

  if(dataSize != 1){
    str += RcvErr;
    return str + FIN;
  }

  unsigned int data0 = data[0];
  for (int bit = 0; bit < 16; bit++) {
    digitalWrite(DoPin[bit], bitRead(data0, bit) ? HIGH : LOW);
  }

  str += RcvOK;
  return str + FIN;
}

String Prcss_AO_Write(unsigned int data[], int dataSize){
  String str = "AO!:";
  int d = 2;

  for(int i=0 ; i<dataSize ; i++){
    AO_Write(i, data[i]);
  }

  str += RcvOK;
  return str + FIN;
}

String Prcss_SV_Write_1(unsigned int data[], int dataSize){
  String str = "SV_1!:";

  msg_MC9_SV_set_1(data, dataSize);
  
  str += RcvOK;
  Serial.println(str);
  return str + FIN;
}

String Prcss_AT_Write_1(unsigned int data[], int dataSize){
  String str = "AT_1!:";

  msg_MC9_AT_set_1(data, dataSize);

  str += RcvOK;
  return str + FIN;
}

String Prcss_SV_Write_2(unsigned int data[], int dataSize){
  String str = "SV_2!:";

  msg_MC9_SV_set_2(data, dataSize);

  str += RcvOK;
  return str + FIN;
}

String Prcss_AT_Write_2(unsigned int data[], int dataSize){
  String str = "AT_2!:";

  msg_MC9_AT_set_2(data, dataSize);

  str += RcvOK;
  return str + FIN;
}

String Prcss_RngAO(unsigned int data[], int dataSize){
  String str = "RngAO!:";
  int rng = 0;
  int d = 10;
  for(int i=0 ; i<dataSize ; i++){
    if(i+1 < dataSize){
      rng = (data[i] > data[i+1]) ? data[i] : data[i+1];
    }else{
      rng = data[i];
    }
    AO_setup(i, rng);
    delay(d);
    i++;  // every 0 ch, not 1 ch.
  }
  str += RcvOK;
  return str + FIN;
}

String Prcss_ChMC9_1(unsigned int data[], int dataSize){
  String str = "ChMC9_1!:";
  int d = 20;
  for(int i=0 ; i<dataSize ; i++){
    setupMC9_1(i, data[i]);
    delay(d);
  }
  str += RcvOK;
  return str + FIN;
}

String Prcss_ChMC9_2(unsigned int data[], int dataSize){
  String str = "ChMC9_2!:";
  int d = 20;
  for(int i=0 ; i<dataSize ; i++){
    setupMC9_2(i, data[i]);
    delay(d);
  }
  str += RcvOK;
  return str + FIN;
}