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Tag Calculations & PID Loops Handling capacity.

8/31/2009 10:13 AM	Rate (0)
Aj_SL Posts: 1 Rating: (0)	Dear Experts, Please help me with basics of Tag Calculations for DI/O & AI/Ofor SCADA applications & What is the power Tag concept?? Is there any Thumb rule I should consider for selection of WINCC Based on no of I/Os ?? I Am not able to Get the Data For PID Handling capacity of S7-PLC Same is Available with PCS7 but not sure whether the same has to be considered ?? Thank you Aj
Aj_SL Posts: 1 Rating: (0)	Last edited by: CS Moderator at: 8/31/2009 10:59 AM transferred to internet view Last edited by: Aj_SL at: 8/31/2009 10:14 AM
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9/4/2009 6:40 PM	Rate (0)
Phantom75 Posts: 2661 Rating: (279)	Hi Aj_SL, Aj_SL . . . help me with basics of Tag Calculations for DI/O & AI/Ofor SCADA applications & What is the power Tag concept?? Is there any Thumb rule I should consider for selection of WINCC Based on no of I/Os ??. . . Power tags arenative WinCC equivalent of PO's of PCS7 signifying a license with huge amount of tags. Alsosee the following thread: Process Object vs. Power Tags When using native WinCC it very difficult to have a thumb rulethat can be applieduniformly to all industries and needs. For example if you want to depict an analog input value how many tags are you going to use? Just one or moreif you create some limit value tags, hysteresis tags etc. On the other hand if you use PCS7 it is easier tocount since one physical object can count as one PO. Aj_SL . . . I Am not able to Get the Data For PID Handling capacity of S7-PLC Same is Available with PCS7 but not sure whether the same has to be considered ?? . . . IMO, PCS7 data can be appliedto many S7-400 PLC's. Regards
Phantom75 Posts: 2661 Rating: (279)
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