Pulse relay

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Short description

The output is set and reset with a short one-shot at the input.

 

Connection

Description

Input Trg

You switch output Q on or off with a signal at input Trg (Trigger) input.

Input S

A one-shot at input S (Set) sets the output to logical 1.

Input R

A one-shot at input R (Reset) resets the output to logical 0

Parameter

Selection:
RS (input R priority), or
SR (input S priority)

Retentivity set (on) = the status is retentive in memory.

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 special function does not have an S input and priority preselection.

The following applies to output Q:
Q is s
witched on with a signal at Trg and is switched off again with the next signal at Trg or R.

 

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Timing diagram

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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:

The status at output Q is toggled with each 0 to 1 transition at input Trg, that is, the output is switched on or off.

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.

 

Overview