1
length
exceeds
the
maximum
allowable value of 125 (Word) or
2000 (Bit), it needs to modify the
length
0x04
Data processing error
Check whether the data value range
meets the requirements of the slave
0x05
Application layer length does
not match
Increase the receiving character
interval
and
check
the
communication parameter settings
0x06
Protocol ID error
Check the sender message
0x07
Buffer address error
Device internal error
0x08
Bit offset error
Device internal error
0x09
The slave ID number does not
match
Increase the timeout period, check
the hardware connection status, and
check the communication parameter
settings
0x0A
CRC check error
CRC error, check the communication
line
0x0B
LRC error
LRC error, check the communication
line
0x0C
Response function code does
not match
Check hardware connection status
0x0D
Response address does not
match
Check hardware connection status
0x0E
Response data length does not
match
Check hardware connection status
0x0F
Communication timeout
Increase the timeout period, check
the hardware connection status, and
check the communication parameter
settings
0x10
ASCII mode start character
error
„:‟ Colon start character error
0x11
ASCII mode ending character
error
CR/LF carriage return and line feed
terminator error
0x12
ASCII mode non-character
The data contains non-hexadecimal
ASCII codes
0x13
Wrong number of characters in
ASCII mode
Slave response length error
