Beckhoff EL72 1-901 Series Manual page 69

Commissioning
Fig. 61: Choose target system (remote)
In this sample "Runtime system 1 (port 801)" is selected and confirmed. Link the PLC with the real-time
system via menu option "Online" → "Login", the F11 key or by clicking on the symbol . The control
program can then be loaded for execution. This results in the message "No program on the controller!
Should the new program be loaded?", which should be acknowledged with "Yes". The runtime environment
is ready for the program start:
EL72x1-901x Version: 1.9 69