Channel: Modbus (Tx) or Modbus (Rx).
Transmission Mode: ASCII and RTU mode.
Auto: Auto detection idle polarity.
Idle high: Idle condition shows High.
Idle low: Idle condition shows Low.
Auto Detect: Set the Baud Rate manually if not selected.
Baud Rate: Data rate (bits per second), and the range is 110 ~ 2M (bps).
Parity: N-None Parity, O-Odd Parity, E-Even Parity.
MSB First: The default is LSB first; click it to change to MSB first.
Show scale in the waveform: Display the waveforms with scales.