in addition to supporting the standard RS232/422/485 serial protocols, Modbus RTU and Modbus ASCII communications can also be monitored and decoded with this flexible app.has the ability to present captured data in multiple views and formats.the app can monitor ports that are already opened and used by another application.emulate data transmission to test serial devices and applications.the software including the ability to sniff multiple ports simultaneously.Serial Port Monitor is a solution for discovering and breaking down problems that may occur during the test and optimization COM port devices' performance and more. This high-quality application delivers a full-featured and comprehensive tool for monitoring COM port traffic.