Output Data Image; Compactlogix Status Structure - Allen-Bradley DeviceNet 1756-DNB Installation Instructions Manual

Appendix B 1769 DeviceNet Modules Status Indicators and Data Structures
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Output Data Image

The output data image is transferred from the controller to the scanner module.
Word
0 and 1
2...181
The following table shows the bit descriptions for the module's command array.
Word
0
1
(1) Do not manipulate reserved bits. Doing so may interfere with future compatibility.

CompactLogix Status Structure

The second area of the CompactLogix controller input image is the Status
Structure. The status structure consists of these data elements.
Description
I.Status.Scan Counter
I.Status.Device Failure Register
I.Status.Autoverify Failure Register
I.Status.Device Idle Register
I.Status.Active Node Register
I.Status.Status Display
I.Status.Scanner Address
I.Status.Scanner Status
I.Status.Scrolling Device Address
I.Status.Scrolling Device Status
I.Status.Device Status
Rockwell Automation Publication DNET-IN001B-EN-P - January 2012
Description
Module Command Array
Output Data Image
Bit Operating Mode
0 1 = Run, 0 = Idle
1 1 = Fault
2 1 = Disable Network
3 Reserved
4 1 = Reset
5...15 Reserved
0...15 Reserved
Data Type
2 words
64-bit array
64-bit array
64-bit array
64-bit array
8 bytes
1 byte
1 byte
1 byte
1 byte
64 bytes
Data Type
2-word array
180-word array
(1)
(1)
(1)