https://forge.codesys.com/forge/talk/Runtime/thread/cd00f6c317/2022-07-06T08:57:30.494000ZRecent posts to Question... Multiple Ethercat Master in project, but only one active.2022-07-06T08:57:30.494000Z2022-07-06T08:57:30.494000Zstruccchttps://forge.codesys.com/u/struccc/https://forge.codesys.com2efa24a4e0c43abd0331de4015b82f0430134311

<div class="markdown_content"><p>Yes, it's quite common.<br/> Note that the library is naturally referenced once in the library manager, however you can add multiple EtherCAT masters and underlying topology in the device tree - each of them has to be bounded to one physical or virtual ethernet adapter by MAC address or device ID.</p></div>

2022-07-06T08:57:26.544000Z2022-07-06T08:57:26.544000Zstruccchttps://forge.codesys.com/u/struccc/https://forge.codesys.com8acb779333b43ac171431a758adf8ecce0dc759e

<div class="markdown_content"><p>Yes, it's quite common.<br/> Note that the library is naturally referenced once in the library manager, however you can add multiple EtherCAT masters and underlying topology in the device tree - each of them has to be bounded to one physical or virtual ethernet adapter by MAC address or device ID.</p></div>

2022-07-06T08:10:05.452000Z2022-07-06T08:10:05.452000Zkut69https://forge.codesys.com/u/kut69/https://forge.codesys.comb74347944f319f6136e0978f78a0074985c70415

<div class="markdown_content"><p>Hi, my question is related to that topic. Is it possible to use 2 "instances" of the EtherCAT master library simultanuous to access 2 different ports for 2 different fieldbus rings?</p></div>

2022-04-04T08:54:05.515000Z2022-04-04T08:54:05.515000Zstruccchttps://forge.codesys.com/u/struccc/https://forge.codesys.com199e6d76b62f4a7c5e71c5044f2b665640f4ee64

<div class="markdown_content"><p>Now I tested it briefly, but couldn't get it alive - the problem is that the Master instance tries to get an exclusive lock on the ethernet adapter at program startup (independent from xBusStop)...</p> <p>But I tried something else, and seems to work. Maybe this is an option for you:<br/> - Configure single master, and multiple slaves<br/> - Set all slaves as optional<br/> - This requires to assign a station address for each of the slaves<br/> (Actually the station address(-es) can identify your configuration)<br/> - Define the common input / output data for all the possible configurations in structures (this might be well planned)<br/> - Create a separate instance of these structures for possible configurations<br/> - Map the I/O data of the optional slaves to the individual instances. You must do mapping, cannot use %IW-%QW for this.<br/> - Scan trough the instances for sign of life (actual I/O data)<br/> - Set a reference in the control application to the selected instance</p> <p>...</p> <p>This is standard functionality, should work fine...</p> <p>If... you want to do it more sophisticated, you can use COE messaging to check presence of individual stations (configurations), read their hardware configuration (slots)... and even to configure station address...</p> <p>You can turn off checking of module and vendor ids, module configuration, and also use advanced PDU configuration...</p> <p>Please let me know about your progress...<br/> It's an interesting topic, I will have some similar tasks in the near future, so looking forward a proper solution... </p></div>

2022-04-04T06:21:29.945000Z2022-04-04T06:21:29.945000Zmondinmrhttps://forge.codesys.com/u/mondinmr/https://forge.codesys.com3d9d96f8469b8f148e00feed2f5198221c3c8a33

<div class="markdown_content"><p>I tested but it's not working.<br/> Also hot enable/disable a slave is not possible.<br/> Disable a slave in editor move all adderessing space of next device back so it's not possible hot reenable it.</p></div>

2022-04-01T04:44:14.738000Z2022-04-01T04:44:14.738000Zstruccchttps://forge.codesys.com/u/struccc/https://forge.codesys.com9e6c0d03752672ed081bd7ed67d2d5efa7ab51d2

<div class="markdown_content"><p>Wow... Interesting topic :) </p> <p>I assume we're talking about Ethercat...<br/> As a first guess I'd try to use the xStopBus input of the individual master instances:<br/> <img src="./attachment/Untitled.png" width="90%"/></p> <p>I wonder if this can work...</p></div>

2022-03-31T18:11:35.693000Z2022-03-31T18:11:35.693000Zmondinmrhttps://forge.codesys.com/u/mondinmr/https://forge.codesys.combb3d666f08b6ef1bad8be439886f19e82802b4b2

<div class="markdown_content"><p>Is it possible keep multiple master configured in different mode (multiple slave configurations) and turn on only one at application boot?</p> <p>I'm developing a new application, on POU side OOP and polymorphism let me create a runtime configurable modular software, but on device side is hard to find a solution.</p> <p>Mapping on a structure field objects of a slave and use references in software is very useful, but a good solution should be dispose 20-30 master configuration in different hardware to select right configuration in runtime.</p> <p>In a lathe machine we are using multiple device configuration, but this solution require a full download. </p></div>