发明名称 |
Data transmission method for a multi-protocol handheld field maintenance tool |
摘要 |
A method for preventing unsafe transmission on an incompatible network with a multi-protocol intrinsically safe handheld field maintenance tool as provided. The method preferably includes checking voltage levels on two sets of network connections when a network connection is detected or indicated on one set. If incompatible voltage levels are detected, the field technician is warned. If voltage levels are appropriate on a selected set of network terminals, the method continues by listening for network traffic of the selected network type. In this manner, a multi-protocol intrinsically safe handheld field maintenance tool is operable with multiple process control communication protocols while minimizing the risk of incompatible data/signal transmission upon process communication loops.
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申请公布号 |
US7027952(B2) |
申请公布日期 |
2006.04.11 |
申请号 |
US20030440434 |
申请日期 |
2003.05.16 |
申请人 |
FISHER-ROSEMOUNT SYSTEMS, INC. |
发明人 |
DELACRUZ MOISES A.;VANDE VUSSE DANIEL E.;YANG KUN;DEWEY ALAN R.;OPHEIM GREGORY J. |
分类号 |
G06F11/30;H04B17/00;G05B1/00;G05B23/02;G08C19/02;H04L12/24;H04L12/26 |
主分类号 |
G06F11/30 |
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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