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Serial Port Reader
Monitor and analyze RS-232 with
COM Port Reader

COM Port Reader is an advanced tool for reading and analyzing serial data going through system’s RS-232, RS-422, or RS-485 ports. Serial port reader is a monitoring and logging solution that is able to visualize activity of any COM port embedded in the system. The program brings the ability to identify problems that can appear when developing or testing a serial application and resolve them straight away.

With the aim of making it easier to read serial port data, the solution provides powerful search and data filtering options. Other Serial Port Reader’s advantages include a built-in terminal and flexible data exporting capabilities. The software RS232 reader has a streamlined and simple interface and works without any additional hardware.

The app comes in a Standard and PRO versions.

What is RS-232 Port Reader capable of?

  • Reading COM port activity

    In case you need to read RS-232, with the software you can start monitoring the port’s activity even if the port has already been opened by another program. All serial data you catch using the app can be displayed on your computer in different views. More than that, reading the serial data in real time lets you timely react to arising problems.

    Once the data is received, it can be saved to a separate file or copied to the clipboard. When it comes to input/output control codes (IOCTLs), the software lets you file them all with their complete parameters. What’s more, COM Port Reader allows saving its sessions for their further reloading when required.
  • Working with multiple ports in one session

    Another useful feature of the program is the ability to read several serial ports at a time.

    This option may be especially useful for comparing the data you get from different COM ports interacting with the same application within one monitoring session. All the data received as a result of such interaction is shown in a single log created with the first in, first out method.
  • Showing sniffed data in various modes

    You can choose the way all captured data will be displayed on your computer. That means, Serial Port Reader provides you with the opportunity to choose from four convenient visualizers: table, line, dump, or terminal one. As an option, you can get your data shown in all of the monitoring modes simultaneously.
  • Emulating serial communication

    The terminal mode option allows you to simulate sending data from a serial application to the COM port you are reading. To test the reaction of the required COM port or the device connected to it, you can try various data formats, including string, binary, octal, decimal, hexadecimal, or mixed.
  • Capturing Modbus data

    Thanks to powerful filters of COM Port Reader, you’ll be capable of reading serial data transmitted over Modbus RTU and Modbus ASCII. Fully compatible with these protocols, the software will also help analyze data received from devices communicating via RS-232, RS-485, and RS-422 interfaces.
  • Exchanging data multiple times

    A simple way to get more accurate data on the behavior of a particular serial port is to send the same command from your serial app to this COM port one more time. That’s what you can do using the efficient session playback feature of RS-232 Reader. The differences between sessions can be shown automatically.

Here’s how to read RS-232 data with Serial Port Monitor: full list of the software functionality

With the app you get the ability to:

Read any COM port regardless of its communications with other programs. (PRO)
Sniff an unlimited number of COM ports at the same time
Monitor serial ports on Windows 10 (x32, x64).
Add multiple serial ports to one session.
Work with COM ports of any type.
Log and sniff serial data transmission.
Record data in real time.
Log both received and sent data streams.
Divide the redirected file into parts or limit its size, depending on your needs.
Catch and analyze the activity of a software (hardware) connected to the monitored COM port.

The software solution provides:

Simple and friendly interface.
Digitally signed software and its internal drivers.
Powerful “Send dialog” with flexible configuration options: stopbits, parity control, flow control, data bits, highlighting, etc. (PRO)
Visualized status of control lines
Ability to customize the monitoring session logging (several timestamp formats, different scale of notation, customizable logging string length etc.)
Support for all baudrates
Several monitoring views: table, line, dump, terminal.

Different monitoring modes offer

Ability to disable the automatic scroll and export raw data to a file - Terminal view
Multi-colored commands display and the ‘Comments’ option - Table view
The statistics of the highlighted IRPs and transcript hints from the Line view -
Table view.

Thinking about integrating our functionality into your own industry-specific solution?

Eltima Port Virtualization Technology is just what you need. Thousands of successful companies worldwide have already experienced the undeniable benefits and advantages of powering their software and hardware products with our advanced technology.

Eltima Port Virtualization Technology

Standard and Professional versions: side-by-side
comparison chart

# Feature Standard Pro/Company
1 Sniffing COM ports used by other applications
2 Exchanging data with any COM port (Send Dialog)
3 Ability to change serial port parameters in Send Dialog
4 Ability to analyze any software/hardware connected to a COM port
5 Monitoring multiple serial ports simultaneously
6 Working with COM-ports of any type
7 Catching all data read from/written to a PC COM port
8 Built-in search option
9 Four monitoring modes to log and view data
10 Logging incoming and outgoing data streams

Custom Software Development

Whether you’re looking at modifying functionality of our current software solutions or developing a new product from scratch, we can make it happen!

What customers say

  • Without the Serial Port Monitor from Eltima, I would not have been able to easily and quickly see the operation of the several serial ports carrying data to the navigation program...
    Jon Kinne

Overall rating 4.6
based on 75 reviews

Let's get started

Serial Port Monitor for Windows
Demo version limitations
• fully functional 14-day trial
System Requirements
Windows (32-bit and 64-bit): XP/2003/2008/Vista/7/8/10, Windows Server 2012, Windows Server 2016
Latest Update
Version 7.0.312 (17th Apr, 2017) Release notes