Description of the function
The function reads the value of input In with a positive edge (0 to 1 transition) at input Trg (Trigger).
This value is written to shift register bits S1 or S8, depending on the set shift direction:
Shift up: S1 accepts the value of input In; the previous value of S1 is shifted to S2,
S2 is shifted to S3, etc.
Shift down: S8 accepts the value of input In; the previous value of S8 is shifted to S7,
S7 is shifted to S6, etc.
Q outputs the value of the configured shift register bits.
If retentivity is not enabled, the shift function restarts at S1 or S8 after a power failure.
Note
The special function shift register can be used only once in the circuit program.
6.5.21 Analog comparator
Short description
The output is set and reset depending on the difference Ax - Ay and on two configurable thresholds.
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