Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario descargar pdf (Pagina 89)

100

101

Programming Overview

4–13

this example, the processor uses the following addresses:

Value: Base Address: Offset Value in S:24 Offset Address:

Source N7:10 10 N7:20

Destination N7:50 10 N7:60

Addressing File Instructions – Using the File Indicator (#)

The

file instructions below manipulate data table files. These files are addressed

with the # sign. They store an offset value in word S:24 (index register), just as with

indexed addressing discussed in the last section.

COP

FLL

BSL

BSR

FFL

FFU

Copy File

Fill File

Bit Shift Left

Bit Shift Right

(FIFO Load)

(FIFO Unload)

LFL

LFU

SQO

SQC

SQL

(LIFO Load)

(LIFO Unload)

Sequencer Output

Sequencer Compare

Sequencer Load

If you are using file instructions and also indexed addr

essing, make sur

e that

you monitor and/or load the correct offset value prior to using an indexed

addr

ess. Otherwise, unpr

edictable operation could occur

, r

esulting in possible

personal injury and/or damage to equipment.

Numeric Constants

You can enter numeric constants directly into many of the instructions you program.

The range of values for most instructions is –32,768 through +32,767. These values

can be displayed or entered in several radixes. The radixes that can be displayed

are:

• Integer

• Binary

• ASCII

• Hexadecimal

Programming

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 421 422

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Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario Pagina 89

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