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embedded_systems:ethercat:understanding_ethercat [2019-01-10 16:16] – mgehrig2 | embedded_systems:ethercat:understanding_ethercat [2021-09-30 07:33] (aktuell) – Urs Graf | ||
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====== Understanding EtherCAT ====== | ====== Understanding EtherCAT ====== | ||
- | ===== List of Abbreviations ===== | ||
- | **[[embedded_systems: | ||
- | \\ | ||
- | |||
===== Synchronisation and Timing ===== | ===== Synchronisation and Timing ===== | ||
- | ==== Overview ==== | ||
=== Official Documentation === | === Official Documentation === | ||
[[https:// | [[https:// | ||
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=== Distributed Clock (DC) === | === Distributed Clock (DC) === | ||
The DC is an option on some slaves. | The DC is an option on some slaves. | ||
- | The Class B EtherCAT stack of Acontis does not suport DCs, but the Class A add on does ("// | + | The Class B EtherCAT stack of Acontis does not suport DCs, but the Class A addon does ("// |
DCs allow synchronized reading of inputs and synchronized setting of outputs in the nanosecond range. | DCs allow synchronized reading of inputs and synchronized setting of outputs in the nanosecond range. | ||
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* Elmo: | * Elmo: | ||
* Are installed with the 'EAS II' software from Elmo in '' | * Are installed with the 'EAS II' software from Elmo in '' | ||
- | * Can be dwonloaded | + | * Can be downloaded {{: |
==== ENI ==== | ==== ENI ==== | ||
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* Cycle time | * Cycle time | ||
* Which PDOs are transmitted in which order | * Which PDOs are transmitted in which order | ||
- | * Created with software EC-Engineer (one license is availabel | + | * Created with software EC-Engineer (one license is available at OST/Buchs-> Einar Nielsen) |
* {{: | * {{: | ||
- | * After every change in the network (new slave or different connection sequence, different PDOs, different cycle time) the file has to generated again. | + | * After every change in the network (new slave or different connection sequence, different PDOs, different cycle time) the file has to be generated again. |
* An application which uses EtherCAT requres an eni-file for the current network | * An application which uses EtherCAT requres an eni-file for the current network | ||