Omron CP1E Series User Manual page 245

Wiring Example
RS-422A/485 Option Board
DIP switch for operation settings
SW1 Terminating resistance ON/OFF
SW2 2/4-wire selection
SW3 2/4-wire selection
SW4 Not used
SW5 RD control
SW6 SD control
No-protocol Communications
Connecting RS-232C Ports 1:1
• Communications Mode: No-protocol
Example: Connections to E5CK Controller
CP1E N-type CPU Unit
Built-in RS-232C Port or RS-
232C Option Board
Signal Pin
FG 1
SD 2
RD 3
RS 4
CS 5
DR 7
ER 8
SG 9
D-sub, 9-pin connector (male)
Connecting RS-422A/485 Ports 1:N with 2-wire Connections
• Communications Mode: No-protocol
CP1E N-type CPU Unit
Signal
SDA-
RS-422A/485
SDB+
Option Board
RDA-
RDB+
FG
Terminal block
CP1E CPU Unit Hardware User's Manual(W479)
CP1E
ON (terminating resistance)
OFF (4-wire connection)
OFF (4-wire connection)
OFF
OFF (no control)
OFF (no control)
Example: OMRON E5CK Controller
RS-232C
RS-232C: Terminal block
shielded cable
Terminal
13
14
1
Device supporting
RS-422A/485
communications (2-wire)
Signal
Pin
RS-422A/485
A(-) interface
3
B(+)
4
1
2
5
Device supporting RS-422A/485
communications (2-wire)
Signal
RS-422A/485
A(-) interface
B(+)
NS-series PT
(Unit No. 0)
NS-AL002
DIP switch settings
SW1
ON (RS/CS control) RS/CS control or always ON
OFF (4-wire connection) SW2
2/4-wire selection
SW3
OFF (4-wire connection) 2/4-wire selection
ON (terminating resistance) SW4 Terminating resistance ON/OFF
Signal
SD
RD
SG
Appendices
A-29