发明名称 |
LOCAL DEVICE AND PROCESS DIAGNOSTICS IN A PROCESS CONTROL NETWORK HAVING DISTRIBUTED CONTROL FUNCTIONS |
摘要 |
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 filed device. A data collection unit within the filed 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 filed device from another one of the devices via the bus. |
申请公布号 |
CA2492656(A1) |
申请公布日期 |
1998.04.09 |
申请号 |
CA19972492656 |
申请日期 |
1997.10.01 |
申请人 |
FISHER CONTROLS INTERNATIONAL LLC |
发明人 |
LARSON, BRENT H.;BROWN, LARRY K.;BURNS, HARRY A. |
分类号 |
G05B19/042;G05B23/02 |
主分类号 |
G05B19/042 |
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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