Omron NT31 - Page 130

119
Connecting to the Host’s RS-422A/485 Port
Section 5-2
C1000H/C2000H rack-mounting type: C500-LK203
[Setting the rear switches]
I/O port
RS-422A
RS-232C
Synchronization
Internal
External
Terminator
OFF
ON
CTS
0V
External
@ I/O port selection (selector switch)
Set this to “RS-422A”.
@ 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.)
5V supply
ON
OFF
@ Unit #, parity, and transfer code
(DIP SW1-1 to SW1-7)
Set SW1-1 to SW1-7 to “OFF” (“0”).
@ CTS selection (selector switch)
Set this always to “0V” (ON).
@ Terminator setting (selector switch)
Set this switch to “ON”.
SW1
SW2
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ON
ON