Rockwell Automation 1771-IS 5V DC INPUT MOD User Manual

Page 13

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background image

Module Preparation, Wiring, and
Installation

Chapter 2

2-6

Figure 2.4
Typical Point-to-point Wiring for Up to Four 4-digit Thumbwheel Switches (Maintained
Switch Contact Mode)

Enable

SW4

8 4 2 1

8 4 2 1

C

D

E

F

G

H

I

B

A

A

A

B

B

LSD

LMD

UMD

MSD

SW1

4–Digit

Digit Junction

8

4

2

1

Field Wiring Arm

Module Inputs

7 6 5 4 3 2 1 0

A

B

C

D

E

F

G

H

I

Enable Lines

10365

2

3

4

6

5

7

8

9

10

11

12

13

14

15

16

17

18

1

Lines

G & H

E & F

C & D

SW3

SW2

8

Thumbwheel

Switch

(User Supplied)

Terminal Strip

(User Supplied)

1771–WF

8

4

2

1

MSD

UMD

LMD

LSD

MSD

MSD

UMD

UMD

LMD

LMD

LMD

LSD

LSD

4 2 1

8 4 2 1

8 4 2 1

8 4 2 1

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