Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual - Manual (Page 16)

16 Publication 1769-UM009E-EN-P - August 2009
Chapter 1 Overview
Input Data Image - CompactLogix
The input data image is transferred from the scanner module to the controller
across the Compact I/O bus.
Output Data Image - CompactLogix
The output data image is transferred from the controller to the scanner
module across the Compact I/O bus.
For additional information about the CompactLogix image structure, refer to
the DeviceNet Modules in Logix5000 Control Systems User Manual,
publication
DNET-UM004 .
Module Command Array Bit Assignments
Output
Word Bit Description Behavior
0 0 Run This bit controls when the module scans its
mapped slave devices. When set (1), the
scanner module will process I/O data as
defined by its scanlist. The Fault and Disable
Network command bits must be clear (0) to
scan the network.
1 Fault When set, the scanner’s I/O mode will be
Halt; messaging will still operate. The fault
bit is primarily used to artificially set the
slave devices into a fault state due to some
event or condition within the control
program.
2 Disable network When set, the scanner module is
functionally removed from the network.
3
Reserved
(1) N/A
4 Reset Restarts access to the DeviceNet network.
5…15
Reserved
(1) N/A
1 16…31
Reserved
(1) N/A
(1)
Do not manipulate reserved bits. Doing so may interfere with future compatibility.
Word Description Data Type
0…89 DeviceNet slave inputs 90-DINT array
Word Description Data Type
0…89 DeviceNet slave outputs 90-DINT array