Rockwell-automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I Manual do Utilizador descarregar pdf (Página 74)

Publication 1769-UM008A-EN-P - November 2001

B-2 Module Addressing and Configuration with MicroLogix 1500

1769-IF4XOF2 Input Image

The input image file represents input channel data words I/O, channel

status bits. Input words 0 through 3 contain the converted analog

input data from the field device. Word 4, bits 0 to 3 are the over-range

flag bits for input channels 0 to 3. Word 5, bit 0 and 1 are the

over-range flag bits for channels 0 and 1. Words 6 and 7, bits 7

through 14 are the data echo. These words provide output

loopback/data echo through the input array. The Input Data File is

explained in more detail on page 4-3. To receive valid status

information, the channel must be enabled.

For example, to obtain the over-range status of input channel 2 of the

1769-IF4XOF2 analog module located in slot 3, use address I:3.4/2.

TIP

You can access information in the input image file

using the programming software configuration

screen.

TIP

The end cap does not use a slot address.

I:3.4/2

Input File Type

Slot

Word

Bit

Bit Delimiter

Word DelimiterElement Delimiter

0123

MicroLogix 1500

Compact I/O

End Cap

Slot Number

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 103 104

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Rockwell-automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I Manual do Utilizador Página 74