SUTO S430 - Page 48

15 Appendix B - Modbus communication example
16 (0x10) Write multiple registers
Request Response
Slave address 1 byte Slave address 1 byte
Function code 1 byte Function code 1 byte
Starting address
Hi
1 byte Starting address
Hi
1 byte
Starting address
Lo
1 byte Starting address
Lo
1 byte
No. of registers
Hi
1 byte No. of registers
Hi
1 byte
No. of registers
Lo
1 byte No. of registers
Lo
1 byte
Byte count 1 byte CRC 2 bytes
Data Hi 1 byte
Data Lo 1 byte
: :
Data Hi 1 byte
Data Lo 1 byte
CRC 2 bytes
17 (0x11) Report slave ID
Request Response
Slave address 1 byte Slave address 1 byte
Function code 1 byte Function code 1 byte
CRC 2 bytes Byte count 1 byte
Slave ID 2 bytes
Device run
indicator
2 bytes
Product code 2 bytes
Product name 20 bytes
CRC 2 bytes
48 S430