58 Rockwell Automation Publication 1788-UM059B-EN-P - September 2015
Chapter 4 Configure the Linking Device
Status Assembly
The status assembly is a collection of status and diagnostic information for the
linking device’s DeviceNet network interface. The information in the assembly is
updated once a second.
All information in the status assembly is stored in little endian format. The
least significant byte of multibyte values is stored first.
Status Assembly Format
Byte
Offset
Size in
Bytes
Data Type Name (Studio 5000
environment version
21or later)
Description
0 4 UDINT ScanCounter The number of DeviceNet I/O scans that
have taken place since power was applied
to the linking device.
4 8 SINT[8] DeviceFailureRegister Indicates which DeviceNet slaves are
faulted. Each bit represents the status of
the slave at the corresponding MAC ID.
12 8 SINT[8] AutoVerifyFailure
Register
Indicates which DeviceNet slaves are the
incorrect device type. Each bit represents
the status of the slave at the
corresponding MAC ID.
20 8 SINT[8] DeviceIdleRegister Indicates which DeviceNet slaves are in
Idle mode. Each bit represents the status
of the slave at the corresponding MAC ID.
28 8 SINT[8] ActiveNodeRegister Indicates which DeviceNet nodes are
configured in the scan list of the device.
Each bit represents the status of the slave
at the corresponding MAC ID.
36 4 SINT[4] StatusDisplay Mimics a 4-character alpha-numeric
display. If there are no faults, the display
shows the linking device’s MAC ID and its
Run/Idle status.
If there are faults, the display scrolls
through the MAC IDs of the faulted nodes
and display the error code associated with
each.
40 1 USINT ScannerAddress The DeviceNet MAC ID of the linking
device.
41 1 USINT ScannerStatus The current status of the DeviceNet
scanner.
42 1 USINT ScrollingDevice
AddressAndStatus
The scrolling address and status fields
scroll through the address and status of all
DeviceNet slaves that are faulted. This
scrolling includes the linking device
scanner itself.
If there are no faulted nodes, both the
scrolling address and status are set to 0.
The scrolling fields change once a second.
43 1 USINT
64 64 USINT[64] DeviceStatus The current status of each DeviceNet slave
node. Each array element is the status of
the node at the corresponding MAC ID.
If a node is not configured in the linking
device scan list, the status value is set to 0.
The linking device scanner status appears
at the entry associated with the linking
device MAC ID.
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