This data source type is available below all device types.
The data link with CODESYS Application V3 data source type in done by means of address monitoring. This requires that the address information between the remote PLC and the local device match. The runtime system of the local application needs valid communication parameters in order to establish the connection.
The network scan function can support you when configuring the data source.
Disadvantage: If you modify the remote application, then you also have to update the local application afterwards (for example, the HMI application.
The advantage is that a symbol configuration is not required in the remote application.
As of CODESYS Communication 4.5.0.0, it is possible to transfer variables of enumeration types with their original type, while earlier versions supported only the numeric base type of enumeration.