Omron NT631 Operation Manuals page 191

Setting the Conditions for Communications with the Host by Using the Memory Switches
Reference If serial port B is used for RS-485 communications, "RS-422A" must be set as its
communication type.
To set other memory switches, select the relevant screen using the [ ] (next
screen) or [ ] (previous screen) touch switch, then make the setting.
S To confirm the settings and quit the memory switch setting screen, press the
"Quit" touch switch. The settings made last will be set and the NT631/NT631C
will return to the "MAINTENANCE MODE MENU" screen.
S To quit the memory switch setting screen without confirming the settings, press
the "Abort" touch switch. The NT631/NT631C will return to the "MAINTE-
NANCE MODE MENU" screen with the previous settings still in effect.
Section 6-7
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