| 摘要 |
<p>A multistation communication bus system accommodates master stations and slave stations, and frame based arbitration among masters. The frame is formatted upon winning arbitration transmitting a framewise organised message including locking and unlocking signalizations for locking and unlocking respectively, and addressed slave station for a duration of multiple frames of the message. This blocks a different master station from accessing a locked slave station during this duration. Additionally, the different master station for upon detecting the blocked executes a first sequence of relatively frequent retry undertakings at a combined time length that is substantially less than a standard maximum value of said duration. Next follows, if required, a second sequence of relatively infrequent retry undertakings at a combined time length that is more than a standard maximum value of the duration.</p> |
