Additional settings / "Serial port" tab ([Setup] menu)

Settings related to the serial port.

Port

Sets the default serial port or displays the currently connected serial port.

When the serial port is not connected, Sets the default serial port for New connection Dialog.
A non existent serial port can be set. New connection dialog does not show any non existent serial ports.
By default, maximum serial port number in the list is 256. It is configurable in MaxComPort setting.
You cannot start connecting from this dialog. (version 5.4.0 or later) You should use New connection dialog for connecting to a serial port.

When the serial port is connected, displays the serial port to which it is connected.
You cannot change the port number while connected from this dialog. (version 5.4.0 or later) To change the connection port number, disconnect once using [File]-[Disconnect] menu and connect to other port using the New connection dialog.

Serial parameters

Serial port parameters. Choose the appropriate parameters for the modem or the host.
Whether the selected or specified settings are actually applied depends on serial port chip or driver.

When the serial port is not connected, Sets the parameters for connecting to the serial port.

When the serial port is connected, Set parameters for the connected serial port.

Speed

The Speed can be specified with any number.

Data

8 bit / 7 bit

Note: If Data is 7 bit, the XMODEM, ZMODEM, B PLUS and Quick-VAN protocols are disabled.

Parity

none / odd / even / mark / space

Stop bits

1 bit / 2 bit

Flow control

Xon/Xoff

Software flow

Note: If Flow control is Xon/Xoff, the XMODEM and Quick-VAN protocols are disabled.

RTS/CTS

Hardware flow(RTS/CTS)

Note: The "hardware" prior to version 4.104 applies to RTS/CTS.

DSR/DTR

Hardware flow(DSR/DTR)

none

No flow control

Transmit delay

Time intervals between characters (lines) being sent, in milliseconds. The unit is milliseconds. You can set the wait time per character (line). If the modem or host drops characters when Tera Term sends a large number of characters, try setting an appropriate delay time.

Detail information of COM port

The detail information of selected port is shown in the text box.
You can select all data by using CTRL+A. You can scroll horizontally by using CTRL/SHIFT + wheel.