Short description
The output is set and reset with a short one-shot at the input.
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Connection |
Description |
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Input Trg |
You switch output Q on or off with a signal at input Trg (Trigger) input. |
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Input S |
A one-shot at input S (Set) sets the output to logical 1. |
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Input R |
A one-shot at input R (Reset) resets the output to logical 0 |
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Parameter |
Selection: RS (input R priority), or Retentivity set (on) = the status is retentive in memory. |
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Output Q |
Q is switched on with a signal at Trg and is reset again at the next Trg pulse, if both S and R = 0. |
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0BA0-0BA3:
The following applies to output Q: |
Timing diagram
Description of the function
The status of output Q changes with each 0 to 1 transition at input Trg and if both S and R = 0, that is, the output is switched on or off.
Input Trg does not influence the SFB when S = 1 or R = 1.
A one-shot at input S sets the pulse relay, that is, the output is set to logical 1.
A one-shot at input R resets the pulse relay to its initial state, that is, the output is set to logical 0.
Either the input R takes priority over input S (the signal at input S has no effect as long as R = 1), or the input S takes priority over input R (the signal at input R has no effect as long as S = 1), depending on your configuration.
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0BA0-0BA3: The valid function is: You reset the pulse relay to its initial state with a one-shot at input, that is, the output is reset to 0. The pulse relay is reset and output Q = 0 after power on or by a reset signal. |
Caution
If Trg = 0 and Par = RS, the "Pulse relay" SFB corresponds with the "Latching relay" SFB function.