Programming and operation chapter 3 – Rockwell Automation 1771-IS 5V DC INPUT MOD User Manual

Page 30

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Programming and Operation

Chapter 3

3-11

Figure 3.6
3-digit Thumbwheel Switch Data Storage, Maintained Contact Mode ( SWITCH #4 OFF)

MSD

MD

LSD

MSD

MD

LSD

MSD

MD

LSD

MSD

MD

LSD

MSD

MD

LSD

6

4

2

6

4

2

2

3

4

5

8

4

2

1

8

4

2

1

6

7

8

9

Switch
Terminals

Field Wiring Arm
Terminals

Switch
Terminals

Field Wiring Arm
Terminals

A

B

C

D

E

F

G

H

I

A

B

C

D

E

F

G

H

I

Switch 1

Switch 2

User Thumbwheel

Switch 3

Switch 4

Switch 5

Switch 6

a) Block Diagram

10372

Data
Table
Word

17

Switch Status Data

10 07

00

Switch
Number

XX0

1

2

3

4

5

6

Diagnostics

-

-

-

-

-

-

MSD

MSD

6

MSD

MSD

MSD

-

MD

MD

MD

MD

MD

4

-

LSD

LSD

2

LSD

LSD

LSD

-

1

2

3

4

5

6

b) Data Table Map

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