Beckhoff TwinSAFE EL6910 Operation Manual page 84

Operation
Fig. 103: Execution order FBs
4.4.9.15 Direct mapping of local I/Os
If a TwinSAFE Logic has local inputs and outputs, e.g. an EK1960, an assignment to safe and non-safe
signals can be made by the user via the Internal Direct Mapping tab of the alias device. These direct
assignments have the advantage that no logic program has to be created by the user for this purpose.
To be able to use the internal direct mapping, the Linking mode of the Alias Device must be set to local.
Fig. 104: Dialog - Internal Direct Mapping
Typical applications are linking the ErrAck signals of the modules with a Standard Alias Device or switching
an output due to a safe input signal.
In the figure the relay output FSOUT Relay Module Channel 1.Output is switched by the safe input Term(15)
(EL1904) - Module 1 (FSOES) InputChannel 1.
84 Version: 1.8.0 EL6910