Error Message
Occurs when the requested message is abnormal during communication.. (If the data is out of range. If CRC is not correct) In response, 0x80 is added to the requested function code.
Error Code List
Function Code
Data Range
Error
Address
CRC
Code
01
02
07
0E
Example
Request
Data Length High
Data Length Low
CRC (RTU) Low
CRC (RTU) High
Slave Address
Function Code
Address High
Address Low
01
06
0C
80
00
01
33
00
1. CRC is wrong.
Response
Save Address
Function Code
Data Range
Address
CRC
01
86
07
03
A2
1. 0x80 is added to the requested function code. 2. CRC error
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