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How to split the Modbus protocol

Olga Weis Olga Weis

In a network defined by the Modbus protocol, multiple devices can transmit data to either a single controller or a server with a Modbus driver installed. The Modbus server can handle input from multiple sensors through one network port. It allows to make multiple connections just to the single port. However, the task can be tricky because this port is controlled by a serial application, making it difficult to open the port in multiple applications simultaneously. However, there is a software tool that makes it easy to allow more than one app to access the port simultaneously. So it helps to split Modbus data.

The app to split Modbus Data


Virtual Serial Port Driver PRO by Electronic Team can work as a Modbus splitter in a particular situation. It enhances the capability of your Modbus network by allowing you to split Modbus data over virtual or real COM ports. It enables you to create virtual ports or use real network ports and split Modbus data so that all of the serial ports in the network simultaneously receive identical data transmission. This allows you to take the data being received by the physical COM port and duplicate it to virtual ports such as COM2, COM3, etc. Multiple applications can access the real serial port by attaching to the virtual ports created by this Modbus data splitter app.

Virtual Serial Port Driver is a versatile application that lets you split and join COM ports, create complex port bundles, and redirect the data from one port to another.

This Modbus data splitter software lets you create any number of virtual serial ports as you need. All created virtual ports will emulate the configuration and all parameters of the physical port.

Here are the steps to take to split one physical serial port into multiple virtual interfaces.

Virtual Serial Port Driver is a versatile application that lets you split and join RS485 ports, create complex port bundles, and redirect the data from one port to another.
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Step-by-step guide:

1
Download Virtual Serial Port Driver PRO and install it on your computer.
2
Launch the program and open the "Split" tab. Click "Split real port" and select the physical port that you want to duplicate.
 Split Modbus data
3
Click the "Plus" button to add the virtual ports which will be communicating with the physical interface that you are splitting. Create as many virtual ports as you need for your specific implementation.
4
Select one of the newly created virtual ports to act as the main in the bundle and click "Set main".
5
Click the "Create" button. The virtual serial port bundle that was just created will immediately appear in the Bundle tree.

That’s all there is to it!

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When your system’s physical serial port receives Modbus data the software will split Modbus protocol data so that it will also be sent to all connected virtual ports and applications.

Additional functionality of this communication software allows you to share a single physical serial port between multiple applications. You can set access rights ("Read", "Write", and "Control") individually for each application.

This versatile tool can make life much easier for those working with Modbus networks. Virtual Serial Port Driver PRO lets you split the Modbus data to allow multiple sources to access a single COM port. You can also redirect Modbus data between serial interfaces, join multiple physical ports into a virtual one, and create complex bundles of real and virtual ports.

Key benefits of Virtual Serial Port Driver PRO if you use it like Modbus data Splitter


Joining Modbus data streams
Virtual Serial Port Driver PRO lets you combine the data transmitted by any number of serial ports in a single virtual interface. A single application that is controlling the port can receive Modbus data from multiple devices or sensors.

Establishing a many-to-many port connection
A singular feature of Virtual Serial Port Driver PRO is its ability to create complex bundles. The bundle can be comprised of real and virtual ports in such a way that multiple interfaces on the "In" side can talk to multiple ports on the "Out" side. A "main port" for each side (IN/OUT) can be set to manage the serial port control lines.

Creating port switcher
Some serial applications are limited in the number of ports they can work with simultaneously. VSPD PRO enables you to connect multiple physical ports into one virtual port to allow automatic switching to occur. VSPD PRO then interacts with a switcher created in your program that points to the virtual port. A free interface is detected from among the joined ports and supplied to the requesting application.

Virtual Serial Port Driver PRO is a great addition to the software toolbox of individuals working with serial communication protocols such as Modbus, RS-232, RS-485, and RS-422. The application provides essential features such as setting custom port parameters and creating port bundles.

VSPD PRO serves as an ideal solution for many communication tasks about serial ports. It builds on the distinctive features of the Virtual Serial Port Driver and adds advanced functionality from a trio of Electronic Team products: Serial Splitter, Shared Serial Ports, and COM Port Redirector. The result is an all-purpose communication tool that allows you to extend the capabilities of your serial ports, applications, and devices.

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