Santerno SINUS MV, User Manual

Page: 106 / 115

101
*N = registers Qty.
<Reaction> mistake
Mistake description:
01 function code mistake
02 start address (or start a register quantity)mistake
03 register quantity mistake
04 read multiple register mistake
Data Bytes Description
Slave station address 1 1
～
247(1-F7)
Function code 1 0x03H
Starting register address hi 1 0x00
～
0xFF
Starting register address lo 1 0x00 ～ 0xFF
Nr of registers hi 1
n of registers
Nr of registers lo 1
CRC check lo 1
cyclic redundancy checks(CRC check)
CRC check hi 1
Data Bytes Description
Slave station address 1 1-247 (1-F7)
Function code 1 0x03H
number of bytes 1 2*n bytes
First register-hi 1
First register data
First register-lo 1
~ … …
Nth register-hi 1
Nth register data
Nth register-lo 1
CRC check lo 1
cyclic redundancy checks(CRC check)
CRC check hi 1
Function code 1 byte 0x83
Mistake code 1 byte 01/02/03/04
<Check> ask PDU
<Reaction> response PDU
4.2 Function code 0x06, write single register
<Check> ask PDU