Allen-Bradley MicroLogix 1000 User Manual

Name: Allen-Bradley MicroLogix 1000
Brand: Allen-Bradley
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422 pages

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Using Basic Instructions

6–3

Bit Instructions Overview

These instructions operate on a single bit of data. During operation, the controller

may set or reset the bit, based on the logical continuity of ladder rungs. Y

ou can

address a bit as many times as your program requires.

Note Using

the same addr

ess with multiple output instructions is not r

ecommended.

Bit instructions are used with the following data files:

• Output and input data files. These represent external outputs and inputs.

• The status data file (file 2).

• The bit data file (B3:). These are the internal coils used in your program.

• Timer, counter, and control data files (T4:, C5:, and R6:). These instructions

use various control bits.

• The integer data file (N7:). Use these addresses (at the bit level) as your

program requires.

Programming

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