Omron NT631 Operation Manuals page 127

Connecting to the Host's RS-422A/485 Port
C200H/C1000H/C2000H CPU mounting type: 3G2A6-LK202-EV1
[Setting the rear switches]
SW1
SW2
SW3
@ Unit #, parity, and transfer code
(DIP SW1-1 to SW1-5)
Set SW1-1 to SW1-5 to "OFF" (0).
* Parity is fixed at Even Parity. Transfer code is
fixed at ASCII 7 data bits and 2 stop bits.
@ Communications speed (DIP SW2-1 to SW2-4)
Set these switches to "0010" to select 19200 bps.
Set these switches to "1010" to select 9600 bps.
(0: OFF 1: ON)
@ 1-to-1/1-to-N selection (DIP SW2-6)
Set SW2-6 to "OFF" ("0") (1-to-N).
@ Instruction level (DIP SW2-7, SW2-8)
Set these switches to "ON" (1).
(Levels 1, 2, and 3 are enabled.)
@ Terminator setting (DIP SW3-1 to SW3-6)
Set SW3-1, SW3-3, and SW3-5 to "ON" (1).
Set SW3-2, SW3-4, and SW3-6 to "OFF" (0).
(Set terminator "ON".)
Section 5-2
119