Serial Port Monitor
Track and analyze the activity of your COM ports

Serial Protocol Analyzer is a feature-rich utility that lets you monitor and record any data going through serial ports of your computer. This dedicated solution will come in handy for development, testing and debugging of your COM-based programs and devices. The software makes it simple to read, filter and save data generated by applications and hardware connected to your system’s COM interfaces.

Advanced Serial Port Monitor overview


Analyzing COM port data


If a COM port you want to monitor is already opened by a third-party application, Serial Port Analyzer will still be able to connect to it and record its activity. It will capture the port’s data and display it to you. Serial Analyzer software will let you select whether to show serial data in the Table, Line, Dump or Terminal mode. Also, you can enable all available visualizers at a time.


Data viewing modes


With the Table view, you get the data in the form of a table consisting of the recorded IRPs. When you select the Line view, you will see more details about each request passing in and out of a monitored COM port. The Dump view will display all incoming and outgoing data in hexadecimal and string formats as a data dump. In the Terminal mode, the monitoring data will be shown as ASCII characters.


Saving data to a file


All captured data, including serial input/output control codes (IOCTLs) with full details, can be recorded to a selected file. Also, you can save your monitoring session and load it next time you need it. Serial Port Monitor software allows reading serial port data in real time, which means you’ll be able to solve any problem immediately after it occurs.


Monitoring of multiple ports


Serial Port Sniffer lets you test an unlimited number of COM ports within one RS232 monitoring session. Just select “Start session” in the main menu of the app and get the ability to track the communications of any serial program with several devices at a time. All data will be recorded using the first-in, first-out method, which makes it more convenient for analysis.


Sending commands via a terminal


With RS232 monitor software, you can not only log serial traffic but also emulate sending data to a particular serial port as though it were sent from the monitored app. This enables you to easily check how a device connected to this port reacts to specific data.


Parsing of Modbus RTU/Modbus ASCII


The software makes it possible to perform monitoring and analysis of Modbus communications. It allows intercepting Modbus RTU and Modbus ASCII frames exchanged between Modbus-enabled devices or apps.