BECKHOFF EL6900-FB - Manual (Page 66)

Function blocks
64 Function blocks for TwinSAFE logic terminals
3.10 The RS function block
3.10.1 Functional description
The FB RS realizes a reset / set functionality. Logic 1 at input Set and logic 0 at input Reset leads to logic
1 at the output. Logic 0 at input Set and logic 1 at input Reset leads to logic 0 at the output. If both inputs
are set to logic 1, the Reset signal is dominant and leads to logic 0 at the output. If both inputs are logic 0,
the output remains in its current state.
Figure 3-27: RS function block
Note
KL6904
The RS block is not available in the KL6904.