Serial Port Monitor v.9.0


Serial Port Monitor is a professional application for RS232/422/485 COM ports monitoring. It monitors, displays, logs and analyzes all serial port activity in a system. You may monitor several ports simultaneously and compare its sessions. With the help of Serial Port Monitor you may debug RS232 ports and any devices using it. It can effectively be used for monitoring serial data exchange between serial devices and any Windows application, debugging computer connection with peripheral devices using COM port - such as modem, mini-ATS, projector, etc, for solving problems with serial (RS232/422/485) data communication control networks and devices, for software and hardware testing and much more. It can monitor any software/hardware that works with a serial port, intercept and record all serial input/output control codes (IOCTLs), tracking their full details and parameters. Serial Port Monitor supports all COM-port types: standard on-board ports, extension board ports, SERIAL-via-USB adapters.

Monitor RS232/422/485 COM ports in the system.

serial port monitor, rs232 port analyzer, serial com port monitoring, analyze serial port, rs232 activity log

  • Serial Port Monitor
  • 9.0
  • 03 Aug 20
  • Electronic Team, Inc.
  • WinXP, WinVista, WinVista x64, Win7 x32, Win7 x64, Windows2003, Windows 8, Windows 7, Windows 10, Windows 11, Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows on ARM
  • Shareware
  • 8.35 Mb
  • 2045
  • $99.00
Latest Versions History
Version Date Released Release Notes
9.0 03.08.2020 Changed: Serial Port Monitor is now offered on a subscription basis. Added: support for Windows 11 and Windows Server 2022; support for Windows on Arm; the possibility to monitor COM ports with long and custom names. Improved: administrator rights are no longer required to start the software; Serial Port Monitor reinstallation does not always require a system reboot. Fixed: an issue with opening COM ports that are found after starting the software; an issue with enabling the Dump View data redirection option from the main menu; a crash when closing Serial Port Monitor on Windows 11; issues with saving values specified in the field "Add after packet to transmit" in the Send Dialog settings.
8.0 07.07.2020 Improved: overall performance and stability; support for USB to COM port adapters; stability of the monitoring session when processing large data streams; data processing speed; etc Fixed: minor issues of the interface; lots of minor fixes and improvements
7.0 19.04.2017 Added: Modbus protocol decoding; Windows Server 2016 support; monitoring session comparison; an ability to reproduce session back to the serial port; 64-bit GUI version; serial port settings changes; etc Improved: the IRPs in the Table view now show the transcript hint from the Line view; etc
6.0 17.07.2015 Added: possibility to add several ports for monitoring in one session; requested length value is now displayed in Table and Line views; possibility to switch between the corresponding input/output packets in Table view; possibility to save layout of all views' windows; possibility to skip capture...
5.0 20.08.2013 Added: command-line options to configure data redirection at new session start or opening an existing one; redirected file can be either split into a bunch of files or can be limited to user-defined size;possibility to export raw data to a file in Terminal view, etc.
4.1 12.10.2010 Added: Windows 7 and Windows Server 2008 support; More stable and bug-free monitoring of large data streams transmitted through serial ports

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