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