Rockwell-automation 1775-KA PLC-3 Communication Adapter Module User Ma Uživatelský manuál stáhnout pdf (Strana 57)

Chapter

41

Addressing Rules and Examples

This chapter presents some general rules for specifying data addresses in

message procedures. This chapter assumes that you are already familiar

with the forms and meanings of addresses in the PLC–3 and other

Allen–Bradley programmable controllers. For details on these subjects,

refer to the appropriate documentation listed in Table 4.A.

Table 4.A

Memory

Organization Documentation

Controller Document Publication

Number

(Old/New No.)

PLC-3

PLC-3 Programming Manual

1775-801/1775-6.4.1

PLC

PLC Programming & Operations Manuals

1774-800/1774-6.8.1

PLC-2

PLC-2 Memory Organization and Structure

1772-907/---------

PLC-2/30

PLC-2/30 Memory Organization

1772-914/1772-4.4

PLC-2/20

Memory Organization of PLC-2.20 Controller

1772-909/1772-4.3

PLC-2/15

PLC-2/15 Memory Organization

1772-912/---------

PLC-4

PLC-4 Microtrol Product Guide

1773-800/1773-6.5.1

In this chapter,the addressing formats are presented in shorthand notation.

The notation used is as follows:

<bit>

the number of a particular bit within the

addressed word

the logical address of a PLC–3 file

a symbolic address of a PLC–3 file

the number of words between the

beginning of the file and the desired word

(offset is zero for the first word of a file)

<size>

number of words of data to be transferred

the logical address of a PLC–3 word

a symbolic address of a PLC–3 word

General

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 238 239

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