Rockwell-automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Modu Manual do Utilizador descarregar pdf (Página 39)

Chapter

5-1

Module Status and Input Data

In this chapter you will read about:

reading data from your module

block transfer read block format

Block transfer read programming moves status and data from the input

module to the processor’s data table in one I/O scan (Figure 5.1). The

processor’s user program initiates the request to transfer data from the

input module to the processor.

Figure 5.1

Word

Assignments for Analog Input Module (1771IFE)

Block T

ransfer Read

Decimal Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Description

Octal Bits 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Description

Word 1 Not Used Diagnostic Bits Diagnostics

2 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data underrange for channels 1-16

3 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data overrange for channels 1-16

4 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data polarity for channels 1-16

5 Channel 1 Input Channel 1 Input

6 Channel 2 Input Channel 2 Input

7 Channel 3 Input Channel 3 Input

8 Channel 4 Input Channel 4 Input

⇓⇓⇓⇓

20 Channel 16 Input Channel 16 Input

These

bits are set (1) at approximately the input range limits selected (

Table 5.B).

Chapter

Objectives

Reading Data From Your

Module

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 62 63

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Rockwell-automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Modu Manual do Utilizador Página 39