diff --git a/docs/Edge/Raspberry_Pi_Devices/reComputer_R1000/Applications/CODESYS/recomputer_r1000_with_codesys_use_modbus_rtu.md b/docs/Edge/Raspberry_Pi_Devices/reComputer_R1000/Applications/CODESYS/recomputer_r1000_with_codesys_use_modbus_rtu.md
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+---
+description: This article mainly introduces how to use the modbus rtu function of reComputer R1000 based on CODESYS
+
+title: How to use CODESYS to configure the Modbus rtu function of R1000
+keywords:
+ - Edge Controller
+ - reComputer R1000
+ - CODESYS
+ - Modbus
+image: https://files.seeedstudio.com/wiki/reComputer-R1000/recomputer_r_images/01.png
+slug: /recomputer_r1000_use_modbus_rtu_with_codesys
+last_update:
+ date: 10/10/2024
+ author: ShuishengPeng
+---
+## Introduction
+This article mainly introduces how to use the modbus rtu function of reComputer R1000 based on CODESYS. We will use the two rs485 ports of reComputer R1000, one port is used for Modbus master and the other port is used for Modbus slave. This article will detail how to configure Modbus master and Modbus slave on CODESYS and show how to deploy them on reComputer R1000.
+## Hardware Preparation
+
+
+
+
+ | reComputer R1000 |
+
+ |
+
+ |
+
+ |
+
+ |
+
+
+
+
+### Modify the configuration file of R1000
+Enter the command:
+```shell
+ sudo nano /etc/codesyscontrol/CODESYSControl.cfg
+```
+Add the following content:
+```shell
+# Add the following content to the end of the file, where ttyAMAx is the serial port number of reComputer R1000. Linux.Devicefile.1~3 represents the serial port number in CODESYS. Here, the serial port number of CODESYS is bound to the serial port number of reComputer R1000, otherwise CODESYS cannot identify the correct serial port
+ [SysCom]
+ Linux.Devicefile.1=/dev/ttyAMAx
+ Linux.Devicefile.2=/dev/ttyAMAx
+ Linux.Devicefile.3=/dev/ttyAMAx
+```
+Then enter the following command to restart the CODESYS service:
+```shell
+ sudo systemctl restart codesyscontrol.service
+ sudo systemctl restart codesysedge.service
+```
+
+### Modbus master configuration
+**Step 1**: Open CODESYS, click `File`--->`NEW Project` to create a new project
+
+
+
+**Step 2**: Enter the project name, select `Standard project`, then click `OK`
+
+
+
+**Step 3**: Select `CODESYS Control for Raspberry Pi 64 SL (CODESYS)` in the `Device` column, select `Structured Text (ST)` in `PLC_PRG in`, and then click `OK`
+
+
+
+**Step 4**: Right click on the project and select `Add Device` to add the device
+
+
+
+**Step 5**: Click `Modbus`--->`Modbus serial Port`--->`Modbus COM` to add a Modbus serial port device
+
+
+
+**Step 6**: Double-click the newly added `Modbus_COM`, click `General`, you can set the serial port number and baud rate and other information
+
+
+
+
+
+**Step 7**: Right-click `Modbus_COM` and click `Add Device` to add a Modbus device to this port
+
+
+
+**Step 8**: Select `Modbus Serial Master` ---> `Modbus Client, COM Port` to bind a Modbus Master device to this serial port
+
+
+
+**Step 9**: Right-click `Modbus_Clent_COM_Port` and select `Add Device` to add the slave device to be operated for this Modbus Master. You can add multiple slave devices here. The slave devices here represent the slave devices that the master station wants to operate. You need to configure the operations that the master station will perform on these slaves later.
+
+
+
+**Step 10**: Select `Modbus Serial Slave` ---> `Modbus Server, COM Port` to add a Modbus slave device
+
+
+
+**Step 11**: Double-click the newly added slave device, and in `General` you can set the `Server address` and `Response timeout` properties
+
+
+
+**Step 12**: Click `Modbus Server Channel`, then click `Add Channel` in the lower right corner to configure the operations that the master station will perform on the slave station, such as selecting the function code, the number of registers to be operated, etc. You can click `Add Channel` to add multiple operations
+
+
+
+**Step 13**: Click `ModbusGenericSerialServer I/O Mapping`, where the data can be mapped to a specified variable, and select `Enable 1` in the `Always update variables` column in the lower right corner. At this point, the configuration of Modbus Master is complete.
+
+
+
+
+
+### Modbus slave configuration
+
+**Step 1**: Right click on the project and select `Add Device` to add a device
+
+
+
+**Step 2**: Select `Modbus` ---> `Modbus Serial Port` ---> `Modbus COM` to add a Modbus serial port
+
+
+
+**Step 3**: Click the newly added Modbus serial port, select `General`, and configure the serial port number, baud rate and other information
+
+
+
+**Step 4**: Right-click the newly added Modbus serial port, select `Add Device`, and add the Modbus slave device
+
+
+
+**Step 5**: Select `Modbus` ---> `Modbus Serial Device` ---> `Modbus Serial Device` to add a slave device
+
+
+
+**Step 6**: Double-click the newly added slave device. In `General`, you can configure the properties of this slave, such as the number of registers and coils, address, etc.
+
+
+
+**Step 7**: Click `Modbus Serial Device I/O Mapping`, and select `Enable 1` in the `Always update variable` in the lower right corner. The Modbus slave configuration is now complete
+
+
+
+### Modbus deployment
+
+**Step 1**: Double-click the project, click `Scan Network`, then select your device, and click `OK`
+
+
+
+**Step 2**: Enter the reComputer R1000 username and password to connect to the device
+
+
+
+**Step 3**: Click the button as shown to deploy the project to reComputer R1000
+
+
+
+**Step 4**: Click the Start button to start the project. You can see that the indicator lights of the Modbus master and slave are both green, indicating that the Modbus communication is normal
+
+
+
+
+
+
+## Tech Support & Product Discussion
+
+Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.
+
+
+
+
diff --git a/sidebars.js b/sidebars.js
index 8bf980eb7283..6bdee751864d 100644
--- a/sidebars.js
+++ b/sidebars.js
@@ -3135,6 +3135,7 @@ const sidebars = {
label: 'CODESYS',
items: [
'Edge/Raspberry_Pi_Devices/reComputer_R1000/Applications/CODESYS/recomputer_r1000_install_codesys',
+ 'Edge/Raspberry_Pi_Devices/reComputer_R1000/Applications/CODESYS/recomputer_r1000_with_codesys_use_modbus_rtu',
],
},
