发明名称 |
REDUNDANCY DEVICE UNIT AND METHOD FOR DETERMINING FAULT IN INDUSTRIAL CONTROL SYSTEM, INDUSTRIAL CONTROL SYSTEM AND INDUSTRIAL SYSTEM COMPRISING REDUNDANCY DEVICE UNIT |
摘要 |
A redundant device unit includes a first device connected with a field device via a first link and a second link in series. The first device, initially active in use, when active sends diagnostic information indicating whether there is a fault in the first link and/or the second link. A second device connected with the field device via the second link and a third link in series, initially passive in use, receives the first diagnostic information from the first device. When the first diagnostic information indicates that there is a fault in the first link and/or the second link, the first device switches to passive and the second device switches to active and generates second diagnostic information indicating whether there is a fault in the second link and/or the third link. A determination regarding the fault is made based on the first and second diagnostic information. |
申请公布号 |
EP2917836(A4) |
申请公布日期 |
2016.07.06 |
申请号 |
EP20120887990 |
申请日期 |
2012.11.07 |
申请人 |
ABB TECHNOLOGY LTD. |
发明人 |
XU, YE;LOHBECK, AXEL;HENKEL, DIETER |
分类号 |
G06F11/22;G05B19/04;G05B23/02;G06F11/20;H04L12/40 |
主分类号 |
G06F11/22 |
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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