SECTION 2

Board Components and Installation

This section describes the components of the Serial Communications Board, how to connect it in the CPU Unit, and how to connect it to external devices.

2-1 Component Names and Functions

10

 

2-1-1

Indicators

10

 

2-1-2

RS-232C Port

11

 

2-1-3

RS-422A/485 Port

12

 

2-1-4

Switches

13

2-2

Installation

14

 

2-2-1

Mounting the Board

14

 

2-2-2

External Dimensions

15

 

2-2-3

Mounting Height and Connector Cover Dimensions

15

 

2-2-4

Precautions in Handling the Board

16

2-3

Wiring .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

 

2-3-1

Connectors

17

 

2-3-2

Wiring Precautions

18

 

2-3-3

Reducing Electrical Noise for External Wiring

18

 

2-3-4

Port Applicability and Restrictions for 2-Wire/4-Wire Connections

19

 

2-3-5

Recommended RS-232C Wiring Examples

20

 

2-3-6

Recommended RS-422A/485 Wiring Examples

21

 

2-3-7

Wiring Connectors

23

 

2-3-8

Soldering

25

 

2-3-9

Assembling Connector Hood

25

 

2-3-10

Connecting to the Board

26

9

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Omron CQM1H-SCB41 operation manual Board Components and Installation