Serial Port Monitor

What Serial Port Monitor customers say

Useful RS-232 Terminal

5.0 rating
November 19, 2020

This terminal is very straight forward and useful for opening COM ports, monitoring ASCII data, and exporting the file.

Jørgen Apeland

Simple monitoring and exporting of ASCII data

5.0 rating
November 19, 2020

This is a simple and straight forward monitoring SW that allows you to open COM ports, monitor, and export the data. It addresses my needs perfectly.

Jørgen Apeland

A great tool for serial port monitoring

5.0 rating
September 17, 2020

Serial Port Monitor is an essential tool for debugging and monitoring devices that use serial port.
I have used it for analyzing the data messages from Radon sensors.

David Sanchez Rodriguez

Serial Port Monitor Enables A PLC to MODBUS RTU Communication

4.0 rating
October 12, 2019

I had been looking for a method to have my JS application communicate to a PLC via the MODBUS RTU protocol. While I was able to communicate the PLC through MODBUS TCP protocol, I was unable to revise the code to function with the MODBUS RTU and so they have not been able to locate each other.
Multiple attempts to connect my PLC to the MODBUS RTU ended with time-out errors unless I rebooted the unit. Obviously, I was frustrated and desperate for a solution.
I eventually came across the Serial Port Monitor after trying dozens of options, including multiple MODBUS emulators, with no luck at all. I found that the Serial Port Monitor helped me analyze exactly where the COM port error was coming from and helped me figure out how to establish communication with MODBUS RTU.
This Serial Port Monitor also hosts a plethora of features that made other aspects of my javascript application more efficient. As a student ready to break into the field of software development, I’m glad that I found this professional SPM software that makes my future career easier and more efficient.

Roland Ding

Serial Port Monitor Helped Me Build A Custom Dashboard on Windows

5.0 rating
June 10, 2019

I wanted to build a custom dashboard for a 3rd-party Li-Ion Battery Management System. The system was based on Texas Instruments BQ76940 and Atmel 8-bit line of microcontrollers.
While I received a brief explanation of the communication protocol, it wasn’t near enough information for the task at hand. This meant being able to analyze the transmitted protocol while using the Windows-based dashboard provided by the manufacturer was a non-negotiable- and urgent- necessity.
After researching several different softwares that just didn’t seem to be what I was looking for, I found Serial Port Monitor. Upon reading into the software, I found that this unique SPM was able to “sniff” out any open serial ports on the Windows platform. This meant that Serial Port Monitor was exactly the tool that I needed to complete the project successfully and easily.
Thanks to this SPM, I have no problem seeing the protocol flow in real time, and can now fully understand the documentation being recorded. If not for SPM, I would have wasted countless hours trying to deal with trial and error during the programming. I’m very pleased that this all-in-one software will be a tool in my programmer’s belt that I can call upon many times in the future.

Eduardo Roldan, Linux Enthusiast