Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual - Manual (Page 15)

Publication 1769-UM009E-EN-P - August 2009 15
Overview Chapter 1
1769-SDN Scanner Module
Data Tables The scanner module uses input and output data images to transfer data, status,
and command information between the scanner module and the MicroLogix
controller to manage the flow of data between your controller and network
devices.
Input Data Image - MicroLogix 1500
The input data image is transferred from the scanner module to the controller
across the Compact I/O bus.
See Chapter 6 for definitions of the Status structure.
Output Data Image - MicroLogix 1500
The output data image is transferred from the controller to the scanner
module across the Compact I/O bus.
Word Description Data Type
0…65 Status structure 66-word array
66…245 DeviceNet slave inputs 180-word array
Word Description Data Type
0 and 1 Module command array 2-word array
2…181 DeviceNet slave outputs 180-word array