Omron Programmable Terminals NT31 NT31C - Manual (Page 115)

5-2 Section Connecting to the Host’s RS-422A/485 Port
104
C1000H/C2000H rack-mounting type: 3G2A5-LK201-EV1
Setting the Front Switches
@ Mode selector (key switch)
Set this to Host link.
Local Host
Mode
selector
Setting the Rear Switches
I/O port
RS-422A
RS-232C
Synchronization
Internal
External
OFF
ON
CTS
0V
External
@ I/O port selection (selector switch)
Set this to RS-422A.
@ Unit # (DIP SW1)
Set SW1-1 to SW1-5 to OFF (0).
@ Synchronization (selector switch)
Set this to Internal.
@ 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.)
@ CTS selection (selector switch)
Set this always to 0V (ON).
Terminator
@ Terminator setting (selector switch)
Set this switch to ON.
ON
ON
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SW1
SW2