Reset Block with Acknowledgement

Reset Block with Acknowledgement

Full Name

Lib.Mervis.v1_0.ResetBlockWithAck

Required Project References

Lib.Mervis

Description

A block used to generate reset and acknowledgement pulses based on input from I/O or HMI. Version 1.1 of the block is identical but includes error state handling!

Usage in ST

program test
    var
        reset: lib.mervis.v1_0.ResetBlockWithAck;
    end_var

    reset();
end_program

Inputs

Name	Data Type	Retain	Mandatory Connection	Meaning
HwResetInput	bool	No	Yes	Input for reset button from I/O
HwAckInput	bool	No	No	Input for acknowledgment button from I/O
Delay	time	No	No	Duration of the generated pulse
PulseCount	int	No	No	Number of pulses generated during Delay. Valid range is 1..20
CombinedAckAndReset	bool	No	No	If true, the acknowledgment pulse is generated simultaneously with reset pulses

Outputs

Name	Data Type	Meaning
Out	bool	Reset output
Ack	bool	Acknowledgment output

Local Variables

Name	Data Type	Meaning
SwReset.In	bool	Variable for reset from HMI
SwAck.In	bool	Variable for acknowledgment from HMI

Detailed Function Description

The block is used to generate reset and acknowledgment pulses from buttons connected to I/O or from HMI. A rising edge on the HwResetInput or SwReset.In input generates PulseCount pulses on the Out output for the duration of Delay. Similarly, a rising edge on the HwAckInput or SwAck.In input generates PulseCount pulses on the Ack output if CombinedAckAndReset is set to false. Otherwise, acknowledgment pulses are generated simultaneously with reset pulses. The triggering inputs do not need to be returned to the inactive level; the block manages this automatically.

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