Rockwell-automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Modu Uživatelský manuál stáhnout pdf (Strana 10)

Chapter

1-1

Overview of the Analog Input Module

This chapter gives you information on:

features of the module

how the input module communicates with programmable

controllers

The Analog input module is an intelligent block transfer module that

interfaces analog input signals with any Allen-Bradley programmable

controllers that have block transfer capability. Block transfer programming

moves input data words from the module’s memory to a designated area in

the processor data table in a single scan. It also moves configuration words

from the processor data table to module memory.

The input module is a single-slot module and requires no external power

supply. (If using passive transducers for input, the user must supply loop

power.) After scanning the analog inputs, the input data is converted to a

specified data type in a digital format to be transferred to the processor’s

data table on request. The block transfer mode is disabled until this input

scan is complete. Consequently, the minimum interval between block

transfer reads is the same as the total input update time for each analog

input module.

The Analog input module senses up to 16 single-ended or 8 differential

analog inputs and converts them to a proportional four-digit BCD or

twelve-bit binary value. You can select from five voltage or three current

input ranges. Each input can be configured as a current or voltage input

with internal jumpers.

This module’s features include:

16 single-ended or 8 differential inputs on one card

User program selectable input ranges on a per channel basis (Table 1.A)

Selectable real-time sampling

Selectable scaling to engineering units

Selectable digital filtering

Selectable data format

Chapter

Objectives

Module Description

Features

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 62 63

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Rockwell-automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Modu Uživatelský manuál Strana 10