The Explanation Of Exception Codes; Communication Program Of Pc - Delta Electronics AC Motor Drive VFD-E User Manual

Address Low
Address High
Function Low
Function High
Exception code
LRC CHK Low
LRC CHK High
END 1
END 0

The explanation of exception codes:

Exception
code
01
02
03
04
10

3.7 Communication program of PC:

The following is a simple example of how to write a communication program for Modbus
ASCII mode on a PC in C language.
#include<stdio.h>
#include<dos.h>
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
STX ':'
'0'
'1'
'8'
'6'
'0'
'2'
'7'
'7'
CR
LF
Explanation
Illegal function code:
The function code received in the command message is not
available for the AC motor drive.
Illegal data address:
The data address received in the command message is not
available for the AC motor drive.
Illegal data value:
The data value received in the command message is not available
for the AC drive.
Slave device failure:
The AC motor drive is unable to perform the requested action.
Communication time-out:
If Pr.09.03 is not equal to 0.0, Pr.09.02=0~2, and there is no
communication on the bus during the Time Out detection period (set
by Pr.09.03), "cE10" will be shown on the keypad.
Chapter 4 Parameters|
Address
Function
Exception code
CRC CHK Low
CRC CHK High
01H
86H
02H
C3H
A1H
4-127