Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual User Manual

Page 162

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Data Manipulation and

Comparison Instructions

Chapter 12

12-7

Case 2. Lower Limit

 YYY  Upper Limit

120

06

0451

010

05

B

050

L

170

YYY

8

200

False

True

YYY

8

377

8

200

8

170

8

000

YYY

8

True

True

If YYY is equal to or less than 200 and equal to or greater than 170, the
comparison is false and logic continuity is not established. If YYY

8

is

greater than 200 or less than 170, the comparison is true and logic
continuity is established.

Keystrokes

Enter a Limit Test instruction by performing the following steps.

1.

Press -[L]-.

2.

Enter <address>.

3.

Enter <upper limit>.

4.

Enter <lower limit>.

Editing a Completed Rung

Edit the Limit Test comparison by performing the following steps.

1.

Positions the cursor over the limit instruction you are going to edit.

2.

Press -[L]-.

3.

Enter <address>.

4.

Enter <upper limit>.

5.

Enter <lower limit>.

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