Hi All,
I have attached a schematic for a flip-flop based latching Estop circuit that I found for a CNC project, and have a few questions.
Requirements:-
Voltages involved will only be 0v and +5v, visual indication of being STOPPED and RESET(Machine Running) at moment if I have read the schematic right only indicator for stopped, and to provide 1 output logic High and 1 Output Logic Low (interface to parallel port).
My questions:-
1. Is attached circuit best way?
2. Can 2nd Indicator be added?
3. How reliable would this be over a chip based circuit.
4. If chip based was best are there any examples that meet the needs listed.
5. Must have low components count, as I am restricted on space on the parallel port card PCB.
Thanks in advance, for your input.
Andrew
I have attached a schematic for a flip-flop based latching Estop circuit that I found for a CNC project, and have a few questions.
Requirements:-
Voltages involved will only be 0v and +5v, visual indication of being STOPPED and RESET(Machine Running) at moment if I have read the schematic right only indicator for stopped, and to provide 1 output logic High and 1 Output Logic Low (interface to parallel port).
My questions:-
1. Is attached circuit best way?
2. Can 2nd Indicator be added?
3. How reliable would this be over a chip based circuit.
4. If chip based was best are there any examples that meet the needs listed.
5. Must have low components count, as I am restricted on space on the parallel port card PCB.
Thanks in advance, for your input.
Andrew
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