U.S. Copyright Law says:
{Title 17 U.S.C. Section 101 et seq., Title 18 U.S.C. Section 2319}
Copyright infringements can be punishable by up to five years in prison and $250,000 in fines. Repeat offenders can be imprisoned for up to 10 years. Violators can also be held civilly liable for actual damages, lost profits, or statutory damages up to $150,000 per work.
Conversely, when you buy a fully authorized version of Serial Port Monitor you get complete access to product updates which include bug fixes and regular upgrades to your software product. You also can take advantage of customer support if the need arises.
Electronic Team, Inc. guarantees that all of their software applications have passed a quality control test ensuring that they are stable and free of any malware.
If you have inadvertently downloaded and are using a pirated copy of the Serial Port Monitor, you can apply for a discount on the purchase price of a fully licensed version.
Serial Port Monitor — простая в использовании утилита, которая позволяет отслеживать трафик COM-порта вашего компьютера. Можно считать последовательные данные из любого COM-порта и отправлять их в любой COM-порт. Присутствует возможость изменять такие параметры соединения, как скорость передачи данных (бит в секунду), четность, биты данных и стоповые биты. Это программное обеспечение может отправлять и получать данные в виде текста ASCII. Также поддерживаются шестнадцатеричный, десятичный, восьмеричный и двоичный форматы при отправке и отображении полученных данных. Возможна периодическая отправка текста, интервал можно изменить в миллисекундах. Можно использовать кнопки «Очистить», «Сохранить в файл» и «Копировать в буфер обмена». Настройка шрифта и цвета фона возможна с помощью меню.
Используя эту простую программу-сниффер порта, вы можете тестировать, контролировать и управлять любым оборудованием, совместимым с протоколом RS-232, RS-485, RS-422 или любым другим совместимым устройством последовательного порта. Распиновка RS-232 (DB9) определяет, что для связи необходимы только контакты RX (приемник) и TX (передатчик). Остальные контакты необходимы только в том случае, если вы реализуете какую-либо форму аппаратного управления потоком. Вы можете легко считывать входящие данные с RX и отправлять исходящие данные на TX с помощью анализатора и тестера последовательного порта, например, Vovsoft Serial Port Monitor. С помощью этого программного обеспечения ваш настольный или портативный компьютер может осуществлять связь между микроконтроллерами (например, платами Arduino) или микропроцессорами (например, одноплатными компьютерами Raspberry Pi) по последовательному каналу связи.
Современные компьютеры больше не имеют встроенных последовательных портов. Однако если вам нужна связь по UART между компьютером и электронными устройствами, просто подключите к компьютеру преобразователь USB в RS232. Чаще всего Windows может установить драйвер USB-конвертера автоматически. Чтобы проверить драйвер, зайдите в «Диспетчер устройств», раздел «Порты (COM и LPT)».
Простой прямой кабель RS232 между вашим ПК (терминалом) и электронным устройством вполне подойдет. Если вам нужна связь между компьютером и ПК через последовательный порт, вам понадобится «нуль-модемный» или «кроссоверный» кабель. Для того чтобы это работало, необходимо, чтобы контакт передачи (TX) одного устройства был подключен к контакту приема (RX) другого устройства, и наоборот. Вы можете легко подключить и использовать RS232 с помощью этой программы.
Free Serial Port Monitor Windows 10, 11 — SimpleTerm SE (Student/Personal)
This is an advanced serial port monitor, simulation and RS232 data capture and analysis tool. Use to log, monitor, analyse or automate RS232 communication or simply use as an ASCII RS232 Terminal for basic serial port communication and RS232 device configuration.
It is a high performance 32-bit application designed to run on almost all PCs running e.g. Microsoft Windows XP, Vista and Windows 7/8, Windows 10 (32 & 64 Bit Editions) and Windows 11.
Schools / colleges and Universities (Free)
Download the demo and request a FREE LICENSE KEY via email. Inform us by email of which school/college/university you study at.
Personal User License (item 1121)
Personal user license order item 1121 online (email delivery only).
Join thousands of other SimpleTerm customers with our app style pricing — activates download below.
Commercial / Professional Use License (item 1120)
Commercial professional user license — just add item 1120 to shopping cart!
SimpleTerm — Serial Port Monitor is a thoroughly tested, mature, highly stable product used worldwide by professional engineers, technicians and software developers as a development aid and debugging tool for RS232 / serial port related projects. It’s easy to use «simple» user interface also makes it a favourite amongst serial port novices and professionals alike. Don’t take our word for it — try out the free versions!
Operates on with the serial / COM ports provided by your operating system. Physically, these ports will be RS232 SUB D9 serial port interfaces in most cases. However, it is also possible to use SimpleTerm for other communication standards such as RS485 and RS422, which have a different electrical design to RS232 but follow the RS232 communication mechanism. Also supported are Virtual COM ports presented by e.g. USB-Serial adaptors & Bluetooth™ Serial Port Profile devices.
SimpleTerm is also known as an RS232 Analyzer as it provides superb data viewing and capture features for post analysis.
It comes with popular CRC analysis as standard.
Download the registerable app — FREE SERIAL PORT SOFTWARE (Windows 7 — Windows 11)
Download SimpleTerm Standard v3.1.1
Download SimpleTerm SE — Manual (PDF)
See also Free software and terminal program based on SimpeTerm SE.
The key features of the software
Serial Port Monitor is chock-full of advanced features and here are just some of them:
Serial data logging
Whether you want to check if a specific serial device is sending or receiving data as it should, or you need to see which data is going through the exact COM port, Serial Port Monitor will easily capture, log, and present the data in an extremely easy-to-read way. More than that, the advanced filtering and search options supported by the program will greatly simplify your work.
Analyzing COM port data
Anytime you need to read data going via a particular serial port, you can connect to it with advanced Serial Port Monitor even if the port has already been opened by another program. The software will capture data in real time and show it in one of its viewing modes (or all of them at a time, if necessary), so you can immediately compare and analyze it.
What’s also nice is that the software allows copying the captured data to the clipboard or redirecting it to a file. This way, for instance, you can read and save serial input/output control codes (IOCTLs) with full details and parameters.
Sniffing multiple ports at a time
Another thing that you can find extremely useful about the program is its ability to sniff several COM ports simultaneously. With this unique option, you can check how your serial app communicates with multiple interfaces or devices at a time within one monitoring session. Plus, the received and sent data will be recorded into a single log using the first-in first-out method, which is especially convenient for data analysis.
Presenting data in different viewers
Without a doubt, the availability of four different data visualizers is one of the program’s advantages over other similar solutions. Serial Port Monitor Windows 10 solution can display data in table, line, dump, terminal mode, or all of them simultaneously. You can choose between the modes depending on your goals. Each visualizer has its benefits. For example, the Dump view displays data in hexadecimal and string formats, whereas the Table view presents the table consisting of the recorded IRPs, etc.
Emulation of sending data
Using the terminal mode feature, you can emulate sending serial data to the sniffed port. The port will recognize data as though it were sent by a particular application. This way you’ll get the ability to track the reaction of required devices to special commands and data. Serial Port Monitor supports string, binary, octal, decimal, hexadecimal, and mixed data formats.
Support for Modbus protocol
Serial Port Monitor works with Modbus RTU and Modbus ASCII protocols. In addition to Modbus data, this program will let you read and record communications with RS485/RS422/RS232 devices and apps.
Learn more about the basic principles of Modbus communication and the most efficient Modbus monitoring software and hardware solutions for testing and debugging Modbus-based devices and networks with Modbus tester guide.
Session playback feature
With Serial Port Monitor Windows 7, 10, you can resend data received from a particular serial application to the port one more time. This method will let you check if your monitoring results are precise as you’ll be able to review COM port’s behavior on receipt of the same serial data. Above that, the differences between the monitoring sessions can be displayed automatically, thanks to the outstanding capabilities of the software.
Serial Port Monitor is a user-friendly software that aside from a host of advanced features offers a clean and intuitive interface.
Here’s how to create serial port monitor connection and use this program for sniffing serial interfaces:
- Download Serial Port Monitor and install it on your computer.
- Launch the app and start a monitoring session.
To do this, head to the Main menu > Session > New session. Alternatively, you can click the ‘New’ on the main toolbar or use the ‘Ctrl + N’ keyboard shortcut.
- Now, in the “New monitoring session” window, choose the view modes which will be used to display the captured data.
Select the desired modes or use the ‘Select all ’ or ‘Select none’ buttons to simplify your selection.
- Then, decide on whether to start the monitoring session immediately or start it in a new window.
- You can also specify what events you are interested in with the ‘Capture options’ – Create/Close, Read/Write, Device Control.
- Finally, click the ‘Start monitoring’ button to start your session.
In order to save a monitoring session, choose ‘Session > Save session/ Save session As’ in the Main menu. Or click ‘Save’ on the main toolbar or use the ‘Ctrl + S’ keyboard shortcut.
Latest version
OS requirements: Windows (32-bit and 64-bit): Vista/7/8/10/11, Windows Server 2008/2012/2016/2019/2022, Windows on ARM
Version: 9.5.600
Released: 18 Mar, 2025
Required disk space: 9.85MB
Demo limitations: fully functional 14-day trial
Legacy versions
OS requirements: Windows (32-bit and 64-bit): XP/2000/2003/2008 R2 SP1/7 SP1/8/10; Server 2003/2008/2012/2016
Version: 9.0.556
Released: 03 August 2022
Required disk space: 4.8MB
If you are looking for earlier versions and want to work with elder OSes, please request it from our Support Team at support@electronic.us.