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