Connection Examples - Omron CP1E-E14SDR-A User Manual

Appendices

Connection Examples

2-Wire and 4-Wire Transmission Circuits
The transmission circuits for 2-wire and 4-wire connections are different, as shown in the following
diagram.
• CP1W-CIF11/12
Example of 4-Wire Connections
2/4-wire switch
(DPDT)
Option Board
• CP1E-N
Example of 2-Wire Connections
2-wire switch
(DPDT)
Built-in RS-485 Port Not connected
Precautions for Correct Use Precautions for Correct Use
Use the same type of transmission circuit (2-wire or 4-wire) for all nodes.
Do not use 4-wire connections when the 2/4-wire switch on the Board is set to 2-wire.
Wiring Example: 1:1 Connections
• Two-wire Connections
CP1E N/NA -type CPU Unit
RS-422A/485 Option Board
Pin Signal
3 SDA-
4
SDB+
1 RDA-
2 RDB+
5 FG
CP1E N S1-type CPU Unit
Built-in RS-485 Port
Signal
A-
B+
FG
A-44
Other Unit
Other Unit
S1D -
Other Unit Other Unit
Remote device
Ground the shield at one end
Shield
when using CP1W-CIF12.
Remote device
Shield
Example of 2-Wire Connections
2/4-wire switch
(DPDT)
Other Unit
Not connected
Option Board
Signal
A(–)
B(+)
FG
Signal
A(–)
B(+)
FG
CP1E CPU Unit Hardware User's Manual(W479)
Other Unit