https://forge.codesys.com/forge/talk/Motion/thread/69b87b325e/2020-02-27T18:46:11.991000ZRecent posts to Optional and station alias2020-02-27T18:46:11.991000Z2020-02-27T18:46:11.991000ZKimhttps://forge.codesys.com/u/kim/https://forge.codesys.com49b15d89553ea581f2dd7bc1acaefc82c417d90c

<div class="markdown_content"><p>Experimenting some with this in RTE 3.5.7.10.</p> <p>I've gotten it to work but only using the "Write eeprom" feature to store a station alias.<br/> However, to unlock its true potential I would like to be able to use the local id selector on my slave unit instead.</p> <p>Now, what I can't get around my head is how the Codesys EtherCAT_Master decides whether to use the local switches or the information stored in eeprom.<br/> Right now Codesys only seem to use the station alias from the eeprom information.</p> <p>The manufacturer of our servo drive states they follow the "ETG.1020 EtherCAT Protocol Enhancements" to how this has been implemented in the drive.</p> <p>Edited below:<br/> Just checked the ETG.1020 and it states that a complex slave with both microcontroller and local id selector can be asked by the master to reveal its local id using a handshake routine in the AL registers.<br/> Master is supposed to request id by setting 0x0120.5, slave loads id into 0x0134 and sets 0x0130.5 when done.</p> <p>Is the Codesys master supporting this or is it restricted to using the id found at 0x0012 which is loaded from the EEPROM?</p> <p>Long question made short:<br/> Is the Codesys EtherCAT Master supporting local id selectors or not?</p> <p>Can you shed some light on this topic?<br/> Thank you!</p> <p>Kim Hansen<br/> Beijer Electronics Automation AB</p></div>