CHINT NVF2G-S Series User Manual

Table 9.6 Definition of communication exception code
serial
number
Error code
(exception code)
A detailed description
0 0x00
no error message
1
0x01
illegal function number
2
0x02
illegal data address
3 0x03
invalid data value
4 0x04
Slave failure
5
0x05
confirm
6 0x06
slave device busy
7 0x08
storage parity error
8
0x0A
Gateway path is unavailable
9 0x0B
Gateway target device failed to respond
10 0x10
CRC check code error
11
0x11
The parameter is a read-only parameter
12
0x12
data value out of range
13 0x13
EEPROM error
14
0x14
Requires user password to read and write
15 0x15
Enterprise password is required to read and write
16 0x16
The multi-function input terminal has a mutuality error (the setting value of the
multi-function input terminal cannot be repeated)
17
0x17
illegal control order
18
0x18
parity error
19 0x19
Cannot be modified in running state
20
0x1A
data frame error
21
0x1B
data overflow error
22
0x1C
Break error
9.10 Example of Modbus communication
Before the communication, first set the relevant communication function parameters, so that the
communication address, baud rate, and data format of the upper computer and the lower computer are
consistent.
Example1:If it is necessary to change the initial setting frequency of the inverter, change 50.00Hz to 25.00Hz.
Data sent by the host:
01
06
00 05
09 C4 9E 08
Inverter
address
write
command
parameter
address
data
content
CRC
check
01
06
0005
09C4 9E08
Inverter
address
write
command
parameter
address
data
content
CRC
check
01
03 0000
0001
840A
Inverter
address
read
command
parameter
address
Number
of data
CRC
check
01
03 02 0002
3985
Inverter
address
read
command
number
of bytes
data
content
CRC
check
Data received by the host:
Example 2 : If it is necessary to read the control mode of group F0.00 of the inverter.
Data sent by the host:
Data received by the host:
Example 3 : If the input command exceeds the setting range of function code parameters, take F0.01
(running command channel selection) group as an example, if the input command is 4, which exceeds the
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NVF2G-S Series Inverter User's Guide

CHINT NVF2G-S Series Specifications

General

Brand	CHINT
Model	NVF2G-S Series
Category	Inverter
Language	English