| 摘要 |
A communication protocol for the transmission of data, for instance in a master-slave structure comprising at least a master unit and a slave unit. The data to be transmitted are contained in frames and/or packages comprising several fields. The communication protocol allows to unambiguously recognize the beginning and the end of the frames of data by selecting at least two predefined symbols along those belonging to the protocol for identifying the start and the end of a frame. Moreover, said two preselected symbols are given another function than identifying the beginning and the end of a frame when opportunely preceded by a third preselected symbol. Accordingly, the two preselected symbols unambiguously identifying the beginning and the end of a frame when used singularly but can be used for other purposes than identifying the beginning and the end of a frame when used in combination with the third preselected symbol. <IMAGE>
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