Method for Checking at least one Telegram
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United States of America Patent
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Nov 18, 2015
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Dec 19, 2014
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Abstract
Method for checking at least one telegram (T1) transmitted via a fieldbus according to a fieldbus protocol, wherein the telegram (T1), which has at least one data block (D1, D2), is received by a field device (FD), which field device (FD) has a first function block (RE) for preprocessing the received telegram (T1), wherein based on the preprocessing it is checked whether the data contained in the at least one data block (D1, D2) correspond to predetermined criteria furnished in the field device, for example, a predetermined value or a predetermined value range (Cmd#, Length, byte start, etc), wherein based on the checking it is determined, whether the received data are forwarded to a second function block (MP, IO) for further processing of the received data in the field device (FD).
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