BECKHOFF EL6900-FB - Manual (Page 36)

Function blocks
34 Function blocks for TwinSAFE logic terminals
The FB ESTOP input variables are linked using the 'Restart', 'EStopIn(x)' and 'EDM(x)' buttons.
The corresponding feedback loop is activated using the 'Activated' checkbox on the right near the
'EDM(x)' buttons. The 'EDM(x)' button can only be selected, if the associated feedback loop is activated.
The FB ESTOP output variables are linked using the 'Error', 'EStopOut' and 'EStopDelOut' buttons.
The delay time of the 'EStopDelOut' output is configured via the selection box 'Delay-Time'.
The characteristics for acknowledging a discrepancy error can be set via the checkbox ‘Safe Inputs after
Disc Error’. If the checkbox is set, both inputs of the input group that has caused the discrepancy error
have to return logical zero simultaneously before the error can be reset.
The ‘MapState’ and ‘MapDiag’ checkboxes are used to specify which FB diagnostic functions are mapped
to the cyclic process image.