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Edge Computing Gateway User Guide: Interface with Xinjie PLC via Modbus RTU protocol

In deze tutorial richten we ons op EG series edge computing gateway met PLC's. We hopen dat dit nuttig is.

Het artikel dat we eerder bespraken:

Hoe EG edge computing gateway integreren met General Electric PLC

Today, let’s talk about how to integration with Xinjie PLC.

Compatible PLC: Xinjie XD Series

1. Hardwareverbinding

The Modbus RTU protocol utilizes serial communication. For this example, the PLC model XD3-16T employs RS485 communication. Simply connect the PLC’s 485 port A to the gateway’s A1, and the PLC’s 485 port B to the gateway’s B1.

Interface with Xinjie PLC via Modbus RTU protocol1

2. PLC-communicatieparameters

2.1. Serial Port Parameter Settings

Interface with Xinjie PLC via Modbus RTU protocol2

3. Gateway-instellingen

3.1. PLC-verbindingsinstellingen

Drag a XinJE node from the left panel and double-click to open its settings page. Configure the following based on your PLC’s serial port parameters:

Protocol: Select Modbus RTU

Serial Port: If connected to A1/B1, select RS485-1

Baud Rate: 19200

Data Bits: 8

Stop Bits: 1

Parity: Even

Time-out communicatie: 2000

Series: XD

Station ID: 1

Format: ABCD

Interface with Xinjie PLC via Modbus RTU protocol3

3.2. Configuratie gegevenspunt

Enter the data points to be read into the parameter list of the XinJE 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 content from Yuque. Click the link to view: https://iotrouter.yuque.com/zn3vdn/eg8000/crnxbmg1g0p20geq

This example reads data from addresses M0 and D0. In the parameter list, enter the address/name/data type/data length in sequence. Data is read cyclically every 2 seconds, as shown in the figure:

Interface with Xinjie PLC via Modbus RTU protocol4

3.3. Testen

Click Deploy and observe that a data point is printed every 2 seconds. The read data point results are: M0:true, D0:3. Communication successful!

Interface with Xinjie PLC via Modbus RTU protocol5

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