Unit Components

Section 2-2

 

 

 

2-2-6 Communications Adapter Components

RS-232C Adapter

1. Mode Setting Switch

3. RS-232C port

2. Connector

RS-232C Port Pin Allocation

FG 1

6 DCD

SD 2

7 DSR

RD 3

8 DTR

RTS 4

9 SG

CTS 5

1, 2, 3... 1. Mode Setting Switch

Set this switch to “HOST” when using a Host Link system to connect to a personal computer. Set this switch to “NT” when connecting to a Program- mable Terminal or PC for 1:1 PC Link.

2.Connector

Connects to the CPU Unit’s Peripheral Port.

3.RS-232C Port

Connects to the RS-232C cable from the other device such as a personal computer, Peripheral Device, or Programmable Terminal.

RS-422 Adapter

1.Termination Resistance Switch

3.RS-422 port

2. Connector

RS-422 Port Pin Allocation

FG

SG

SDB

SDA

RDB

RDA

1, 2, 3... 1. Termination Resistance Switch

Set the termination resistance switch to “ON” (upper side) for the Link Adapters on both ends of the Host Link system and for the RS-422 Adapter.

2.Connector

Connects to the CPU Unit’s Peripheral Port.

3.RS-422 Port

Connects to the Host Link network.

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Omron CPM1A operation manual Communications Adapter Components, RS-232C Adapter, RS-422 Adapter