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简体中文
Haitian Creole
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?????? ??? ??? ??????? ??? ??? ?? circuits of devices inside and outside the screen? ?? ?? ????? ??? ?? ?? ?????? ?????? ???? ???. ??? ??? ??????? ???? ?? ????? ???? ????? ???. ?? ??????????? ??? ????? ??? ???? ?? ???????? ?????? ?????? ? ??????? ?? ????? ????? ??????. ??? ?????? ??? ?????? ??????? ?????? ??? ?????? ???? ?? ????? ?? ???? ??????? ???? ??????? ?? ??????? ????? ? ??????? ???? ???
?? addition, these connection terminals also serve a isolation function. For example, when a PLC controls other equipment in the form of weak current controlling strong current, the strong current equipment can be isolated from the PLC through an intermediate relay, which can also play a role in prevention and control.
????? ?? ???? ??? ??????? ?????? ?????????? ?? ????? ?? ?????? ???? ? ??????? ???? ??????? ???? ???????? ?????? ?? ????. ???? ????? ???? ????? ???????? ???? ?????? ?????? ????? ??????????????? ?????? ?? harmoni????? ??????? ????? ?? ????????? ?? ????? PLC ??? ????? ???? ????. ??? ???????? ????? ??? ?? terminals ?????????
