Preen AFV+ Series, User Manual, Page: 104 / 137

AFV
+
Series High Power Programmable AC Power Supply
5-92
5.2.3 Communication Fail Answer Format
Slave Address
Function
Code
Error Code CRC16
DevAddr Func ErrCode CRC_H CRC_L

Byte1 (Device Address)
：
0x02 (
Editable
)

Byte2 (Function Code) ：
Function Code Description
0x83 Read Register Address Error
0x86 Write Single Register Address Error
0x90 Write Multiple Register Addresses Error

Byte3 (Error Code)
：
Error Code Description
0x01 CRC Checksum Error
0x02 Data Format Incorrect
0x03 Start Address does not exist
0x04 Data Length Out of Range

Byte 4,5
：
CRC16 checksum of Byte1 to Byte3 (refer Chapter4 CRC calculation)