Omron NT31 Operation Manuals page 188

Section 6-7
Setting the Conditions for Communications with the Host by Using the Memory Switches
Display the fourth memory switch screen by
pressing the [ ] (next screen) or [ ] (previous
screen) touch switch.
Press the touch switch corresponding to the
port at which the host link method is to be set
("Comm. A Method" or "Comm. B Method") to
display the setting option "Host Link".
The setting option changes each time the
touch switch is pressed.
Press the "Set" touch switch to the right of the
port at which the setting has been made.
In this example, serial port A is used.
Press the "Comm. Speed" touch switch to
display the communications speed to be set.
The setting option changes each time the
touch switch is pressed.
In this example, serial port A is used.
Press "Quit".
The communications speed is set.
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