SIEMENS S7 1200 CB 1241 Modbus RTU Communication With RS485 Sensor and Multifunction Meter

MB_COMM_LOAD Communication frame: ================================= a) Port Selection (RS485) c) Baud Rate: 9.6 Kbps d) Parity bit: None c) Stop bit:1 d) Communication MB_DB for MB_Master ================================== MB_MASTER a) MB_ADDR: SLAVE ID NO b) MODE: SIEMENS MODBUS MODE 0: Read Data 1: Write Data DATA_ADDR: Slave Register Data Address DATA_LEN: for INT: 1, DOUBLE: 2 DATA_PTR: Define variable/ Data block for Mov modebus readable dataMeter Modbus Communication Frame =================== SLAVE ID = 1 BAUD = 9.6Kbps Parity = None Stop bit = 1 Data Length = 2. 2word= 2 register/ Parameter 10 Parametr = 20 PLC Data Type (SIEMENS) ======================= Data type Data Length Decimals/Data Format ========= ============ =============== Real(Double/Float) 32bit 0.0000000 LReal (Double/Float) 64bit 0.000000000000000 int (Signed) 32bit -00000000+00000000 Dint (Signed) 64bit Bool 2bit 0= false, 1 = true Array of [Real,LReal,int,Dint,Bool] Time (Dint) 64bit String A-Z; Internal PLC Memory =================== M = BOOL MD = Real/LReal MW = int/Dint Timestamps 0:00 into 1:00 start 10:00 Ending