Tecfluid MX4B - Manual (Page 11)

11
The slave responds after more than 3.5 characters, indicating its identification, the
requested function code, the number of data bytes to be sent, data and the CRC.
The totalizer value is the floating point data 0x42F208FD = 121,017555
Exemple 3. Writing the Flow rate value for 20 mA
Master requests slave number 0x01 (MX4B converter) to write the contents
corresponding to Flow rate 20 mA. The value to write is 1400.
Slave ID: 0x01
Function: 0x10 (Write multiple registers)
Initial address: 0x3004
Number of registers to write: 2
Data to write: 1400 = 0x44AF0000
The slave responds after more than 3.5 characters, indicating its identification, the
requested function code, the register address, the number of registers, the number of
written data bytes, data and the CRC.
01 03 04 42 F2 08 FD F9 89
01 10 30 AF 00 00 82 8C 04 00 02 04 44
Slave ID
(MX4B)
Function Register
address
N.
registers
CRC N.
bytes
20mA
LSB
20mA
MSB
01 10 30 04 00 02 0F 09
N. de bytes Total LSB Total MSB Function CRC Slave ID (MX4B)
Register address N. of written registers Slave ID (MX4B) CRC Function