Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 51)

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Section 2-4
C500/C1000H rack-mounting type: C500-LK203
[Setting the rear switches]
CTS
0V
External
I/O port selection (selector switch)
Set this to “RS-232C”.
Unit #, parity, and transfer code (DIP SW1-1 to SW1-7)
Set SW1-1 to SW1-7 to “OFF” (“0”).
Synchronization (selector switch)
Set this to “Internal”.
Baud rate (DIP SW2-1 to SW2-4)
Set these switches to “1010” to select 9600 bps.
Set these switches to “0010” to select 19200 bps.
1-to-1/1-to-N selection (DIP SW2-6)
Set SW2-6 to “0” (1-to-N).
Instruction level (DIP SW2-7, SW2-8)
Set these switches to “1”.
(Levels 1, 2, and 3 are enabled.)
CTS selection (selector switch)
Set this always to “0V” (ON).
5V supply
ON
OFF
Synchronization
Internal
External
Termination
resistance
OFF
ON
I/O port
RS-422A
RS-232C