To be sure in the accuracy of your results, you can repeat sending the same data to the same COM port with a convenient session playback feature supported by the software. Additionally to Modbus data, with the app you can easily catch and log data communicated by RS485, RS422, and RS232 devices.

Serial Port Monitor is fully compatible with Modbus RTU and Modbus ASCII protocols. All data received and sent by the ports will be recorded to a single log by using the first in, first out method. Connect your serial apps to several COM ports at a time and monitor the data exchange within one session.

Simultaneous monitoring of multiple ports.

Thanks to the Terminal mode option, you can easily emulate sending serial data (in string, binary, octal, decimal, hexadecimal, or mixed formats) to the required COM port like it was sent from the sniffed app. Each of the modes provides data in the different format and you’ll be able to either choose the visualizer best suited to your needs or enable all four views at a time. The software supports four different modes of data display: table view, line view, dump and terminal views. Advanced features offered by Serial Port Monitor

Hyperterminal in windows 10