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Please let me know, whether modern PLC like modicon quatum etc do have the PID tuning function block at PLC processor level or at SCADA level? In SCADA system, the PID auto tuning option is a soft option or hard option?
In case, the SCADA system fails, then how the PID loops behave, does the system run independently like any other DCS?
In case, the SCADA system fails, then how the PID loops behave, does the system run independently like any other DCS?