Omron NT-series Operation Manual page 49

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Connecting to a Host Link Unit
Two types of host link units are available: a rack-mounting type and a CPU-
mounted type. The switch settings differ according to the type of host link unit. Set
the switches according to the unit type.

C200H rack-mounting type: C200H-LK201(-V1)
[Setting the front switches]
Set each switch with a flat blade screwdriver so that the values or symbols in the
setting value window agree with the following.
5 2
[Setting the rear switches]
CTS
selector
switch
External
0V (ON)

C500/C1000H rack-mounting type: C500-LK201-V1
[Setting the front switches]
Host
Local

Mode control (key switch)
Set this to "host link".

Unit # (SW1, SW2)
Set these switches to "0".

Instruction level, parity, and transfer code (SW4)
Set this switch to "2".

Baud rate (SW3)
Set this switch to "5" to select 9600 bps.
Set this switch to "6" to select 19200 bps.

1-to-1/1-to-N selection (DIP switch)
Set #3 to "ON".

CTS selection (selector switch)
Set this always to "0V" (ON).
Section 2-4