Omron NT31 Operation Manuals page 194

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 memory link method is to be
set ("Comm. A Method" or "Comm. B Meth-
od") to display the setting option "Memory
Link".
The setting option changes each time the
touch switch is pressed.
In this example, serial port A is used.
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.
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