发明名称 |
Local device and process diagnostics in a process control network having distributed control functions |
摘要 |
<p>A field device for use in a process control network having a plurality of devices (12-32) 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 (34) 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 (14, 102) 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 (12) device for processing. The controller (14, 102) 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 (34). <IMAGE></p> |
申请公布号 |
EP1022626(A3) |
申请公布日期 |
2005.08.10 |
申请号 |
EP20000105765 |
申请日期 |
1997.10.01 |
申请人 |
FISHER CONTROLS INTERNATIONAL LLC |
发明人 |
LARSON, BRENT H.;BURNS, HARRY A.;BROWN, LARRY K. |
分类号 |
G05B19/02;G05B19/042;G05B19/418;(IPC1-7):G05B19/042 |
主分类号 |
G05B19/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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