Rockwell Automation 1756-DNB ControlLogix DeviceNet Scanner Module Installation Instructions - Manual (Page 42)

42 ControlLogix DeviceNet Scanner Module
Publication 1756-IN566D-EN-P - June 2008
The status structure consists of these data elements.
Status Structure
Element
Description Data
Type DINTS
ScanCounter Counter incremented each I/O scan 32-bit 10
DeviceFailureRegister Device failed bit table; 1 = failed 64-bit
AutoverifyFailureRegister Device I/O size does not match
scanner’s internal table;
1 = mismatch
64-bit
DeviceIdleRegister Device is idle bit table; 1 = idle 64-bit
ActiveNodeRegister Node online bit table; 1 = online 64-bit
StatusDisplay ASCII representation of scanner
module alphanumeric display 4-byte
ScannerDeviceStatus Scanner device status: 4-byte
binary 11
ScannerAddress DeviceNet address of1756- DNB
scanner module 8-bit
binary
ScannerStatus Status of 1756-DNB scanner module 8-bit
binary
ScrollingDeviceAddress Scrolls through DeviceNet nodes
once per s by address and status
(0 = no faults).
8-bit
binary
ScrollingDeviceStatus 8-bit
binary
ReservedArray Future expansion (20 bytes) 20 x
8-bit 16
DeviceStatus DeviceNet node status array,
byte per device
64 x
8-bit 24/32