06026352 is referenced by 175 patents and cites 41 patents.

A field device for use in a process control network having a plurality of devices communicatively coupled by a two-wire, all-digital communication bus includes a connector that connects the field device to the two-wire, all-digital bus to enable all-digital communication over the bus, a memory that stores a diagnostic test routine having a series of device or process diagnostic test instructions, and a controller that performs the device or process diagnostic test instructions stored in the memory to implement a device or process diagnostic test using the field device. A data collection unit within the field device collects diagnostic data generated during the diagnostic test and a communication unit communicates the collected diagnostic data over the bus to a host device for processing. The controller may include a program language interpreter adapted to interpret the diagnostic test instructions which may be provided to the field device from another one of the devices via the bus.

Title
Local device and process diagnostics in a process control network having distributed control functions
Application Number
726262
Publication Number
6026352
Application Date
October 7, 1998
Publication Date
February 15, 2000
Inventor
Larry K Brown
Marshalltown
IA, US
Brent H Larson
Marshalltown
IA, US
Harry A Burns
Marshalltown
IA, US
Agent
Marshall O Toole Gerstein Murray & Borun
Assignee
Fisher Controls International
MO, US
IPC
G05B 19/418
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