When working with serial devices it is important to have the ability to monitor and inspect the activity of your system’s RS232/422/485 ports. Examining the data flow traveling through the interfaces can be very helpful when installing new devices or troubleshooting a problem. It can be difficult to pinpoint where the problem is actually occurring.
This is how to check RS232 port in Windows 10. Simply follow these steps to check serial ports:
"Control Panel > Device Manager > Ports"
Your system’s COM ports will be displayed.
In cases where the displayed information is insufficient for your needs, we offer a professional software application that provides an effective method of testing and analyzing your serial ports.
If you need to know how to check serial ports in the Windows operating system, you will find there are no native tools to perform this task. There is, however, a software solution that can be used for checking serial port activity and monitoring data transfer through the interfaces.
When problems arise between a serial device and an application, you need to know how to check RS232 communication. The typical method is to follow these general troubleshooting guidelines. We recommend that by developing an understanding of how serial devices work, you can save a substantial amount of time when taking down issues. A program like Serial Port Tester can be instrumental in increasing your knowledge of serial communication.
There is an effective and efficient method of investigating issues that you may encounter during the development and testing of a serial device driver or application. COM Port Tester from Eltima software answers the question of how to check RS232 communication with a full-featured application which makes it easy to monitor, analyze, display, and log data from your RS232/422/485 serial ports.
In our demonstration, we will use Eltima Software’s Serial Port Tester as the program with which to test serial ports. We will show how to check an RS232 port is working in three different ways.
To monitor your serial port activity, use these simple steps:
1. Download and install Serial Port Tester. Launch the app and open a new monitoring session by following the next step.
2. From the main menu select “Session > New session”. Alternate methods to start a new session are using the ‘Ctrl + N’ keyboard shortcut or clicking “New” on the toolbar.
3. The “New monitoring session” window should now be displayed.
Select the viewing mode which will be used to display the monitored serial data:
“Select all” or “Select none” can also be chosen as viewing options.
4. Select “Start monitoring now” if you want to immediately start monitoring the ports. You can choose the “New window” option to start the session in a clean window.
5. Use the “Capture options” menu to select the events to be monitored. Your choices are device control, create/close or read/write.
6. Click the “Start monitoring” button to begin the session.
7. Save the session for late analysis by selecting “Session > Save session/Save session As” from the main menu.
Many valuable insights about your serial communication can be gained by a comparison of two saved sessions. Saving a monitoring session prior to making any changes and then saving a subsequent session provides the data with which to make your comparison. Differences in the sessions can easily be identified.
Here’s how to compare sessions:
A feature of Serial Port Tester is its ability to reproduce a data transmission to a COM port. To send data to a serial port follow these steps:
Serial Port Tester is a versatile utility that can be extremely useful in many scenarios involving serial communication and devices. We have demonstrated some popular uses of the tool. You will find it a valuable addition to your software toolbox for identifying issues with serial devices and applications.