This guide focuses on connecting Inovance PLC to the EG Edge Gateway via Modbus RTU protocol. It is suitable for beginners looking to set up industrial communication quickly.
The articles we discussed before:
How to integration EG edge computing gateway with the General Electric PLC
How to integrate with Xinjie PLC via Modbus RTU protocol
Как взаимодействовать с ПЛК Panasonic через протокол Mewtocol TCP
1. Подключение оборудования
Compatible PLC: Inovance H3U
The Modbus RTU protocol uses serial communication. This example PLC model employs RS232 communication.
2. Параметры связи с ПЛК
2.1. Serial Port Parameter Settings
Предоставляется инженером ПЛК.
The serial port parameters for this Inovance PLC are:
Скорость передачи данных: 57600
Биты данных: 8
Стоп-биты: 1
Parity Bit: NONE
3. Конфигурация шлюза
3.1. PLC Connection Setup
Drag an Inovance node from the left pane. Double-click to open the settings page and configure as follows based on the PLC’s serial parameters:
Протокол: Select Modbus RTU
Последовательный порт: RS232
Скорость передачи данных: 57600
Биты данных: 8
Стоп-биты: 1
Паритет: Нет
Timeout: -1
Series: H3U
ID станции: 0x0B
Format: ABCD
3.2. Конфигурация точки данных
Enter the data points to be read into the parameter list of the Inovance node. Once configured, the node will automatically read data from the PLC at the specified frequency.
Data points are typically provided by PLC engineers. After obtaining the point list, fill in the data points according to the gateway’s required format. For specific mapping details, refer to:
This section contains a Yueque content card. Click the link to view:（Вы можете использовать Google Chrome для перевода）. https://iotrouter.yuque.com/zn3vdn/eg8000/dqdvyosc5vubd2rv
This example reads data from addresses D6000 and D6002. In the parameter list, enter the address/name/data type in sequence. The data is read cyclically every 2 seconds, as shown in the figure:
3.3. Тестирование
Click Deploy and observe that data is printed every 2 seconds. The read data point results are: D6000:0 D6002:0. Communication successful!
