BECKHOFF EL6900-FB - Manual (Page 22)

Function blocks
20 Function blocks for TwinSAFE logic terminals
3.1.3 FB AND configuration in the TwinCAT System Manager
Figure 3-2: FB AND configuration
Their characteristics are configured with the setting buttons on the right near the two AndIn inputs,
whereby the inputs are always single-channel ones. A discrepancy monitoring cannot be used for the
AND.
The 'AndIn(x)' buttons can only be selected when the corresponding input has been activated. All inputs
are deactivated in the default setting.
The FB AND input variables are linked using the 'AndIn(x)' buttons.
The output variable of the FB AND are linked using the 'AndOut' button.
The ‘MapState’ and ‘MapDiag’ checkboxes are used to specify which FB diagnostic functions are mapped
to the cyclic process image.
The FB AND does not supply any error information and therefore the error button is basically deactivated.