Serial Port Monitor

Surprisingly, this non-intrusive serial monitor tool can even be connected to a COM port already opened by an application to start analyzing the serial port activity. Moreover, the serial port sniffer has a unique functionality of simultaneously monitoring multiple COM ports. There’s also a terminal mode feature so that you can send data in various formats to the monitored serial port as if it was sent on behalf of a monitored application using the serial monitor. Because this is a complete software solution, you don’t need to worry much about any additional hardware.

I’m an industrial equipment/repair professional who frequently deals with old PLCs, and I’ve found Serial Port Monitor to be an invaluable tool for troubleshooting serial communications. When it comes to diagnosing and resolving issues in these systems, having a reliable and feature-rich tool like Serial Port Monitor is essential.

Here is a review of what I did during the trial period reverse engineering and debugging modbus diesel generator controller and relay boards for my amateur radio station.
Using Electronic Team’s Serial Port Monitor has been extremely useful in debugging and reverse engineering cheaper modbus equipment for control and automation using node-red. The cheaper hardware usually comes without any documentation at all, but in some cases with demo programs. Running Serial Port Monitor, hooks into the actual serial port without any problems or need for virtual ports. And multiple views for presenting the data. Another very useful feature is to save the session. So when equipment is connected to network gateways, I can always go back to my recordings to verify what actually happened. Also works nice with Moxa serial port servers, and the open port and monitor function lets me remotely debug in the real gateway driven bus, comparing data with working saved session. I have not found any tool as easy and versatile as this for rs-232, and rs-485 modbus monitoring.

I’m a gardener and hobbyist in electronic engineering. My recent project is to develop a working control for my irrication system based on LoraWan devices and Modbus sensors. Before purchasing the Serial Port Monitor I worked with some Modbus simulators and scanners for troubleshooting and debugging. Now with Serial Port Monitor it is much more easier and effectively.
A great tool.

We make extensive use of this software utility to monitor and log serial port traffic when testing third-party programs. It’s a great tool for troubleshooting serial protocols or reverse-engineering undocumented functions in software products.