Transfering data between HI CPU with PA controller.
Hello Dears, If i wan to transfer some data (bool or word) between HI controller and PA controler ؛ in other words between sil application and non sil.whether or not is another way in exception of communication variables? anyway have limited values or not? Regards.
Other safe option (old fashion way) is to use MMS Comm lib with FB like MMSDef , MMSRead. Suitable up to SIL3.
Another one is to use CI854 Profibus cards with DP/DP Coupler. But in case of 2nd option You have to consider that, CI module cannot be directly connected to safety application. (transfer variables from sil to non-sil to send and non-sil to sil when receiving)