Hello, I´m starting with a PLCnext Engineer. I folow the Quick starting guide but when I try to connect to the device I receive the message “could not connect to the controller” The logging area show “Connection failed, no response from the controller” The device is a kit of EduNet and is connected to a FL Switch. The scan button on the online devices discover the kit and I have the blue check Do I need to put username and password in some place ? where ? The quick start not indicate this. Thanks and excuse my english.
Hello Diego, please make sure that the Firmware installed on your controller has the Same version as the PLC Template you are using in the plcnext Engineer. Maybe EduNet kits are not delivered with the latest FW so you might have to update your device.
I have the same problem with the starterkit, I can ping the ip address and connect from web server to plc next but when I try to download or write the program, the pop up said “faild to connect, the controller not response” I have tried with different version of the soft but how check the fw version?
Hello, The firmware version is shown in the top-right corner of the Web-based management page: 
You can always use the latest version of PLCnext Engineer with any firmware version - on the “Start” page, if you are starting a new project from scratch, just select the version of the controller with the same firmware version: 
If you don’t see exactly the firmware version you are running, just select the next lowest version, e.g. I am running FW 2020.6.1, so I would select 2020.6.0 in PLCnext Engineer. From there, you should continue following the “Getting Started” guide in the Info Center, from “Configuring the IP settings”. =========================== If you have the new Starter Kit, then you can also follow this Getting Started guide, which includes a ready-made project: https://www.plcnext-community.net/en/getting-started-with-plcnext-technology Hope this helps. ~ Martin.