Modbus Communication Commissioning Example - INVT Goodrive350 Series Operation Manual

Goodrive350 series high-performance multi-function inverter
hexadecimal form.
The command transmitted by the master is as follows:
01 10
Continuous
Inverter
address
write
command
If the operation is successful, the following response is returned:
Inverter
address
Note: In the preceding command description, spaces are added to a command just for explanatory
purposes. In practical applications, no space is required in the commands.

9.4.8.4 Modbus communication commissioning example

A PC is used as the host, an RS232-RS485 converter is used for signal conversion, and the PC serial
port used by the converter is COM1 (an RS232 port). The upper computer commissioning software is
the serial port commissioning assistant Commix, which can be downloaded from the Internet.
Download a version that can automatically execute the CRC check function. The following figure
shows the interface of Commix.
First, set the serial port to COM1. Then, set the baud rate consistently with P14.01. The data bits,
check bits, and end bits must be set consistently with P14.02. If the RTU mode is selected, you need
to select the hexadecimal form Input HEX. To set the software to automatically execute the CRC
function, you need to select ModbusRTU, select CRC16 (MODBU SRTU), and set the start byte to 1.
After the auto CRC check function is enabled, do not enter CRC information in commands. Otherwise,
command errors may occur due to repeated CRC check.
The commissioning command to set the inverter whose address is 03H to be forward running is as
00 0B 00 02
Parameter
Parameter
address quantity
01 10
Continuous
write
command
04
Number of
bytes
00 0B 00 02
Parameter
Parameter
address quantity
-265-
00 64 00 C8
10s 20s
30 0A
CRC
Chapter 9
F2 55
CRC