BECKHOFF EL1904 - Manual (Page 34)

Operation
32 EL1904
4.3.5 Entering a TwinSAFE address and parameters in the System Manager
The TwinSAFE address set at the DIP switch must also be entered in tab FSoE (under FSoE address)
under the EL1904.
The EL1904 parameters are set under the respective TwinSAFE connection in the Connection and
Parameter tabs.