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You have to wait until Beckhoff releases TwinCAT 3.1.4026 to choose the dark theme. The PLC editors are not simple text editors. Therefore Visual Studio plugins/extensions usually don‘t work with TwinCAT. By the way: Visual Studio 2013 is not recommended anymore (only necessary for TwinCAT 4020.28). You should use TwinCAT XAE Shell (TcXaeShell) or Visual Studio 2017. ... View more

There are actually three options: TimeClientAddon Requires PLC engineer and Nexeed Time Server (MES). No additional configuration in Windows. Windows Time Synchronization Independent of Nexeed No feedback on PLC that time synchronization is working Target system Windows must be configured (e.g. after exchange of defect PLC hardware) Cyclic Update (part of MES module LineControl; often also used to make backups of OpconData / DAT files) No configuration on PLC side necessary. Registry and service is configured and started remotely by MES. Edit: Daylight saving time must be activated, that means after PLC hardware exchange without backup image this checkbox must be set in Windows again. IP address may not change. In case of PLC hardware exchange, Cyclic Update service must probably be triggered again. No feedback on PLC that Cyclic Update is working (you can check if the service "OpCon: Cyclic Update" is running in the Windows Services) Old software, support in future not clear (technical/security limitations) ... View more

You must increase the OpconBase constant OPCON_EXTENSION_ADAPTERS_PER_EXT for maximum number of extension adapters in the library manager: Some hints: After changing library parameters, I recommend clean project and activate configuration. Never delete libraries in TwinCAT, otherwise you will lose such library parameters. Only delete unused libraries that are not managed by Control plus Studio / OES (check this button: ). With TwinCAT 4020.28 make sure that you are using all Bosch patches, otherwise library parameters can get lost. If you do not have access to the Bosch-internal release server, contact our Helpdesk by email. ... View more

When you get the error System.IO.IOException: The process cannot access the file 'C:\TwinCAT\3.1\Components\Plc\Managed Libraries\cache' because it is being used by another process. just click OK and export again until export finishes without this error. It is a kind of timing error when the export installs libraries and TwinCAT is updating the library cache.   If you are using NexeedEcStaubliCS9uniValPlc, updating your project to TwinCAT 3.1.4022.32 will solve the problem (because with TC <4022.32 the library is installed during every export although it exists already). ... View more