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embedded_systems:ethercat:choose_linux_master [2019-02-08 14:33]
mgehrig2
embedded_systems:ethercat:choose_linux_master [2019-02-08 14:37]
mgehrig2
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 ====== Choose a Linux Master ====== ====== Choose a Linux Master ======
 +===== Overview =====
 +The linux master is a PC with Linux installed.
 +The kernel is patch with the rt preempt patch to make the system real-time capable.
 +The EtherNet port is used to connect the PC with the EtherCAT network.
 +
 +
 ===== Realtime capability ===== ===== Realtime capability =====
 Depending on the requirements,​ the PC must have very good real-time properties. Depending on the requirements,​ the PC must have very good real-time properties.
  
 Very good real-time behavior (max. jitter < 30 usec) is required if: Very good real-time behavior (max. jitter < 30 usec) is required if:
-  * The Linux master must set the clock. E.g. if no distributed clock is used and the bus cannot be synchronized with a slave. See [[embedded_systems:​ethercat:​understanding_ethercat:​understanding_sync_with_dc|Understanding Synchronisation with Distributed Clock]]s for more informations.+  * The Linux master must set the clock. E.g. if no distributed clock is used and the bus cannot be synchronized with a slave. See [[embedded_systems:​ethercat:​understanding_ethercat:​understanding_sync_with_dc|Understanding Synchronisation with Distributed Clock]]s for more information.
  
 A time buffer, which is larger than the largest expected jitter, has to be used. A time buffer, which is larger than the largest expected jitter, has to be used.