Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario descargar pdf (Pagina 166)

100

101

Preface

MicroLogix 1000 Programmable Controllers User Manual

9–18

And (AND)

The

value at source A is ANDed bit by bit with the value at source B and then

stored in the destination.

Truth Table

Dest = A AND B

A B Dest

0 0 0

1 0 0

0 1 0

1 1 1

Source

A and B can either be a word address or a constant; however

, both sources

cannot be a constant. The destination must be a word address.

Updates to Arithmetic Status Bits

With this Bit: The Controller:

S:0/0 Carry (C) always resets.

S:0/1 Overflow (V) always resets.

S:0/2 Zero (Z) sets if result is zero; otherwise resets.

S:0/3 Sign (S) sets if most significant bit is set; otherwise resets.

Execution Times

(µsec) when:

True False

34.00 6.78

AND

BITWISE AND

Source A

Source B

Dest

1 2 ... 161 162 163 164 165 166 167 168 169 170 171 ... 421 422

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Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario Pagina 166

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