8

CJ1G-CPU4

@P

External Interface

A CJ1-series CPU Unit provides two communications ports for external interfaces: a peripheral port and an RS-232C port.

Peripheral port

The peripheral port is used to connect a Programming Device (including a Programming Console) or a host computer. It can also be used as an

RS-232C port by connecting a suitable cable, such as the CS1W-CN118 or CS1W-CN

@26. The connector pin arrangement when using a

connecting cable for an RS-232C port is shown below.

Pin No.

Signal

Name

Direction

1

−−

−

2

SD (TXD)

Send data

Output

3

RD (RXD)

Receive data

Input

4

RS (RTS)

Request to send

Output

5

CS (CTS)

Clear to send

Input

6

Reserved

None

−

7

−−

−

8

−−

−

9

SG (0V)

Signal ground

−

Connector hood

FG

Protection earth

−

CONTROLLER

CJ1G-CPU44P

SYSMAC

PROGRAMMABLE

ERR/ALM

RUN

COMM

INH

PRPHL

OPEN

PERIPHERAL

BUSY

MCPWR

PORT

LED Indicators

DIP Switch

(Inside the battery compartment)

Used for initial settings.

Peripheral Port

Connected to Programming Devices,

such as a Programming Console or host computers.

Memory Card Connector

Connects the Memory Card to the CPU Unit.

RS-232C Port

Connected to Programming Devices

(excluding Programming Consoles),

Host Computers, general-purpose external

devices, Programmable Terminals, and other

devices.

Memory Card Eject Button

Press the eject button to remove te

Memory Card from the CPU Unit.

Memory Card Indicators

MCPWR (green): Lit when power is

supplied to Memory Card.

BUSY (orange): Lit when Memory

Card is being accessed.

Battery Compartment

Memory Card Power

Supply Switch

Press the power supply

switch to disconnect

power before removing

the Memory Card. Also,

press the Memory Card

Power Supply Switch to

perform an easy backup

operation.

5

1

9

6

CS1W-CN118