Rockwell Automation 1788-DNBO DeviceNet Daughtercard Installation Instructions User Manual

Page 13

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DeviceNet Daughtercard 13

Publication 1788-IN053A-EN-P - December 2001

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 status

4-byte

ScannerDeviceStatus

Scanner device status:

4-byte binary

11

ScannerAddress

DeviceNet address of 1788-DNBO daughtercard

8-bit binary

ScannerStatus

status of 1788-DNBO daughtercard

8-bit binary

ScrollingDeviceAddress

scrolls through DeviceNet nodes once per second
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

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