Specifying logical addresses – Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) User Manual

Page 105

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Chapter 6
Programming Overview

6–8

Specifying Logical Addresses

You assign logical addresses to instructions from the highest level (element)
to the lowest level (bit). Addressing examples are shown in the table below.

To specify the address of a:

Use these parameters:

Word within an integer file

File Type
Word Number

N

2

Word within a structure file

File Type
Structure Number
Delimiter
Word

T

7

ACC

.

Bit within an integer file

File Type
Word Number
Bit Delimiter
Bit Number

N

2

5

/

Bit within a bit file

File Type
Bit Delimiter
Bit Number

B

/ 31

Bit files are bit stream continuous files; there-
fore, you can address them in two ways: by bit
alone (B/31), or by word and bit (B1/5).

Bit within a structure file

File Type
Structure Number
Delimiter
Mnemonic

R

7

/ DN

The addressing parameters required when using the MicroLogix 1000 HHP differ slightly from those required
when using programming software.

You must address at the bit level using mnemonics for timer, counter, or
control data types. The available mnemonics depend on the type of data.
See chapters 8 through 14 for more information.

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