We present work on dynamic adapter connections for IEC 61499. Adapters in IEC 61499 simplify programs by encapsulating different event and data connections. Traditionally the plug and sockets are determined at design time of a system. In contrast, dynamic adapter connections do not statically link subsystems at design time, but allow to exchange interacting subsystems at runtime by retargeting plugs and sockets. This paper presents the dynamic adapter connection concept. In addition, we present an implementation concept based on OPC UA and an example.