Connecting to the Host’s RS-422A/485 Port

Section 5-2

C1000H/C2000H rack-mounting type: 3G2A5-LK201-EV1

Setting the Front Switches

Mode

selector

Host Local

@ Mode selector (key switch) Set this to Host link.

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.

8

 

7

 

6

SW1

5

@ Unit # (DIP SW1)

4

3

Set SW1-1 to SW1-5 to OFF (0).

2

 

1

 

ON

@ Synchronization (selector switch)

 

8

Set this to Internal.

7

 

6

SW2

5

@ Communications speed

4

(DIP SW2-1 to SW2-4)

3

2

Set these switches to 0010 to select

1

ON

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 setting (selector switch)

 

Set this switch to ON.

104

Page 115
Image 115
Omron NT31 NT31C manual 104