Serial port ([Setup] menu)

"Serial port setup" dialog box

Port
Serial port to be used. By default, maximum serial port number in the list is 256. It is configurable in MaxComPort setting.
Speed, Data, Parity, Stop bits, Flow control
Serial port parameters. Choose the appropriate parameters for the modem or the host.

The Speed can be specified with any number. Actually, the serial port driver may not reflect your speed.

Flow control can be configured in the following:
none ... No flow control
Xon/Xoff ... Software flow
hardware ... Hardware flow(RTS/CTS)

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

Transmit delay
Time intervals between characters (lines) being sent, in milliseconds.