Serial Port Monitor - Software Serial Port sniffer, logger & protocol analyzer for Windows
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User Data Rollout

The User Data rollout appears when the USER-DEFINED FUNCTION is chosen from the Function list. It allows you to enter the contents of the custom request. Type in hexadecimal numbers (characters 0-9, A-F, either lowercase or uppercase).

The context menu offers you the following functions:

Save to binary file
Binary file is a non-text file with a bin extension. The data is written in the binary format. For example, the DD AA B5 (3 bytes) sequence displayed in result pane will result in bytes 0xDD, 0xAA and 0xB5 written into the output file. The resulting file can subsequently be used by some other application for additional processing.
Save to file
Saves the contents of the Result rollout to the ASCII-encoded text file. The file then can be opened in any text editor or used by some other application.
Load from file
Loads the data from either the text or binary file, which was previously saved with a Save to binary or Save to file commands.
Clear
Empties the entered data.