An Ethernet/IP Network consists of an Ethernet/IP Scanner and one or more Ethernet/IP Adapters. In this case, the scanner is the master in the network and the adapters are the slaves.
The CODESYS runtime can act as either a scanner or an adapter.
CODESYS continues to differentiate between a remote adapter and a local adapter.
Ethernet/IP Remote Adapter: In CODESYS, a remote adapter is a device that you insert in the device tree of a project below an Ethernet/IP Scanner.
Ethernet/IP-Local Adapter: In CODESYS, a local adapter is a device which you insert in the device tree of a project directly below an Ethernet adapter (TCP) or Modbus port (COM). As a result, you can use the CODESYS runtime as an Ethernet/IP Adapter.