Free serial port monitor software lets you troubleshoot communications problems and log data from RS232, RS422, RS485 and Modbus instruments.
Control the state of the PC's com port output lines and see the state of the input lines. Free technical support for life. Understands ASCII, hexadecimal or binary data. Data logging to text files from GPS, PICs, plcs, scales, electrodes, titrators, fluorometers, balances, RFID readers, laboratory instruments, etc.