Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Manual de usuario descargar pdf (Pagina 66)

Chapter 8

Publication

17466.8 - April 1997

Application Examples

This chapter provides two application examples to help you use the

analog input module. They are defined as a:

• basic example

• supplementary example

The basic example builds on the configuration word programming

provided in chapter 6 to set up one channel for operation. This setup

is then used in a typical application to display a current (amperage)

value.

The supplementary example demonstrates how to perform a

dynamic configuration of five of the eight available channels. The

example sets up an application that allows you to manually select

whether the current transducer data is displayed for L1, L2, or L3.

The example also includes configuration and programming to

display pressure and liquid level.

Application Setup - Display a Current (amperage) Value

In this example, the current draw of a single-phase motor is shown

on an LED display. The display requires BCD data, so the program

must convert the current reading from the analog input module to

BCD before sending it to the display.

Device Configuration

1746NI8

1746OB16

Single

Phase

Motor

LED Display

(DC sinking inputs,

BCD format)

Current

Transducer

SLC 5/04 processor

L1 L2

Basic Example

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Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Manual de usuario Pagina 66