https://forge.codesys.com/forge/talk/Runtime/thread/0ac0ef301e/2021-03-11T21:16:18.463000ZRecent posts to EtherCAT master initialization issues2021-03-11T21:16:18.463000Z2021-03-11T21:16:18.463000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.comf9d34df01f26d9b1c15520e90c4fdf0e9d42a56a

<div class="markdown_content"><p>Have you made the optional devices optional?<br/> More details on how to set this up in the help:<br/> <a href="https://help.codesys.com/webapp/_ecat_edt_slave_slave;product=core_EtherCAT_Configuration_Editor;version=3.5.16.0" rel="nofollow">https://help.codesys.com/webapp/_ecat_edt_slave_slave;product=core_EtherCAT_Configuration_Editor;version=3.5.16.0</a></p></div>

2021-03-11T20:54:40.935000Z2021-03-11T20:54:40.935000Zcodesysnoobhttps://forge.codesys.com/u/codesysnoob/https://forge.codesys.comc056495dd0bf37b3e156e08a7785e1e45cbddb13

<div class="markdown_content"><p>I am using Codesys 3.5 SP16 Patch 4. My EtherCAT master is configured to connect to three slaves. But physically I have connected only one, but on download the EtherCAT master does not even run unless I disable the unconnected devices offline and then download again so that it can only see the device that is connected. Is there a way to ignore the unconnected devices and atleast connect to the devices that are present on the network? </p></div>