Compactlogix status structure, Scan counter – Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual User Manual

Page 94

Advertising
background image

94

Publication 1769-UM009E-EN-P - August 2009

Chapter 6 DeviceNet I/O Image

CompactLogix Status
Structure

The second area of the CompactLogix controller input image is the Status
Structure. The status words are described in more detail in the following
sections.

Scan Counter

This 32-bit unsigned value is incremented each time the DeviceNet network is
scanned. The value will automatically roll over to zero and continue counting.

Description

Data Type

I.Status.Scan Counter

2 words

I.Status.Device Failure Register

64-bit array

I.Status.Autoverify Failure Register

64-bit array

I.Status.Device Idle Register

64-bit array

I.Status.Active Node Register

64-bit array

I.Status.Status Display

8 bytes

I.Status.Scanner Address

1 byte

I.Status.Scanner Status

1 byte

I.Status.Scrolling Device Address

1 byte

I.Status.Scrolling Device Status

1 byte

I.Status.Device Status

64 bytes

Advertising