BECKHOFF EL6900-FB - Manual (Page 42)

Function blocks
40 Function blocks for TwinSAFE logic terminals
MonIn or Secure inputs of an input pair. The 'MonIn(x)' or 'Secure(x)' buttons can only be selected when
the associated input has been activated. All inputs are deactivated by default.
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 MON input variables are linked using the 'Restart', 'MonIn(x)', 'Secure(x)' and 'EDM(x)' buttons.
The manual function test is activated using the 'Manual Function Test' checkbox.
The FB MON output variables are linked using the 'Error', 'MonOut' and 'MonDelOut' buttons.
The FB MON output variables are linked using the 'Error', 'MonOut' and 'MonDelOut' buttons.
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.