
NOVA541
- 91 -
Number of data Hi
2 characters
8-bit
Number of data Lo
2 characters
8-bit
Error Detection
2 characters
16-bit
End character
2 characters (CR+LF)
None
5-5-2 Error Code
▪ Error code is returned when an error is in the Frame.
▪ Frame Format
Factor
ASCII
RTU
Start character
: (colon)
None
Communication address
2 characters
8-bit
Function code
2 characters
8-bit
Error code
2 characters
8-bit
Error Detection
2 characters
16-bit
End character
2 characters (CR+LF)
None
※ Error codes
Error codes
Description
01
Invalid Function code
02
Invalid D-Register address
08
Data number error
※ The causes of No Response
- Overrun, Framing Error, Parity Error, LRC Error, CRC Error
- Wrong communication address
- The time between adjacent characters is longer than 1 sec.
- Broadcast communication mode