bpic2881
Member
I am currently studying for my bachelours degree and I am compelting a unit of PLC's. I have an assigment around Siemens PLC's with also some knwoledge questions, one which I am stuck with. could anyone help as I can find any straight answers on the internet. the question is,
[FONT="]Research and explain why an Emergency Stop function cannot be connected to an ordinary PLC system. Discuss options for implementing an emergency[/FONT][FONT="] system.[/FONT]
I understand the whole differnce between the contacts being normally and open and closed being reversed when it goes thrgouh the PLC but assuming that is not the answer.
THanks!!
Beth x
[FONT="]Research and explain why an Emergency Stop function cannot be connected to an ordinary PLC system. Discuss options for implementing an emergency[/FONT][FONT="] system.[/FONT]
I understand the whole differnce between the contacts being normally and open and closed being reversed when it goes thrgouh the PLC but assuming that is not the answer.
THanks!!
Beth x