The short answer
Yes. The connection to RFEM 6 and RSECTION is included in every CALC plan, including Free. Mia can also work with RSTAB 9 through the same connection. You need a licensed installation of the relevant program and the Dlubal-Connector. Processing in RFEM, RSTAB, or RSECTION costs 3 credits per request in addition to the chat price. All associated script calls are included in that charge. Reading data from a model is free, and runs that fail are not charged.