AFV
+
Series High Power Programmable AC Power Supply
5-91
5.2
Read Register Command Format
5.2.1
Read Register Command Format
Slave Address
Function
Code
Start
Address
Number of
Addresses
CRC16
DevAddr
Func
StartAddr
Num
CRC_H CRC_L
Byte1 (Device Address)
：
0x02 (Editable)
Byte2 (Function Code)
：
0x03
（
Read multiple register addresses
）
Byte3,4 (Start Address)
：
Start reading register address (Refer to section 5.4)
Byte5,6 (Number of Addresses)
：
The number of register addresses plan to read
Byte7,8 (CRC6)
：
CRC16 checksum of Byte1 to Byte6 (Refer to section 5.5)
5.2.2
Read Register Successfully Answer Format
Slave
Address
Function
Code
Byte Count
Data
CRC16
DevAddr
Func
ByteCount
{dat1..;datN}
CRC_H CRC_L
Byte1 (Device Address)
：
0x02 (Range
：
1-32)
Byte2 (Function Code)
：
0x03 (Read multiple register addresses)
Byte3 (Number of Addresses)
：
The number of register addresses plan to read
Byte4 to N (Data)
：
Read Data Content
Byte N+1
，
N+2 (CRC16)
：
CRC16 checksum of Byte1 to ByteN
(
Refer to section 5.5
)