Omron NT31 Series, Operation Manuals

Page: 129 / 707

118
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 (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