Omron CP1E Series - Page 81

3-17
3 Part Names and Functions
CP1E CPU Unit Hardware User’s Manual(W479)
3-1 CPU Units
3
3-1-4 Optional Serial Communications Board for N-type CPU Units with 30 or 40 I/O Points
z RS-232C Connector
z RS-422A/485 Terminal Block
CP1W-CIF01 RS-232C Option Board
Pin Abbr. Signal Signal direction
1 FG Frame ground −
2 SD(TXD) Send data Outputs
3 RD(RXD) Receive data Inputs
4 RS(RTS) Request to send Outputs
5 CS(CTS) Clear to send Inputs
65V Power −
7 DR(DSR) Data set ready Inputs
8 ER(DTR) Data terminal ready Outputs
9 SG(0V) Signal ground −
Connector hood FG Frame ground −
CP1W-CIF11 or CP1W-CIF12 RS-422A/485 Option Board
COMM
Front Rear

Communications
status indicator

RS-232C connector

CPU Unit connector
5
6
1
9
Front Rear

Communications
status indicator
COMM
RDA- RDB+ SDA- SDB+ FG

RS-232C connector

CPU Unit connector

DIP switch for operation
settings
RDB+
RDA-
SDA-
SDB+
FG
Tighten screws on the terminal
block to 0.28 N
.
m.