Shihlin electric SDP Series, Manual

Page: 429 / 555

416
Error code 02H indicates the received parameter address is wrong. The parameter address
range should be within 0x0000~0x20FF.
Error code 03H indicates the received parameter value is out of range, The parameter value
range is mainly judged as follows:
1. Check whether the number of read data exceeds the range and current data (word) ranges
is from 1 to 29 words.
2. Check whether the written parameter value exceeds range. In current communication
address (0x0000~0x20FF), most addresses have a defined range. If some addresses are
reserved and not used, the range is -32728~32767.
When there is an error in receiving data, the function code will be added 0x80, which means an
error has occurred. The following package will be returned.
(a)ASCII mode (b)RTU mode
STX
‘:’ Slave device
number
01H
Slave device
number
‘0’ Function 83H
‘1’ Error code 02H
Function
‘8’ CRC CHK Low C0H
‘3’ CRC CHK High F1H
Error code
‘0’
‘2’
LRC CHK
‘7’
‘A’
END1 CR
END0 LF