Difference in FB's memory consumption between real PLC and simulated one
Is there difference in memory consumption of function blocks between real AC800M and simulated on? For example, in simualted PM851 I created 10 function block of MotorUni type. By Table 46 of 3BSE041434-510_H_en_System_800xA_5.1_System_Guide_Technical_Data_and_Configurat
such 10 blocks should occupy 1*57,9+9*10,4=151,5 KB. In my simulated PM851 - 144,06 KB by information from SystemDiagnostic function block.
Should such difference mean that simulated PLC is not same as real PLC in case of FBs memory consumption?
In actual controller I think it considers some kb of memory for diagnostic run's like CEX bus hadling,modbulebus. where as in simulated physical controller it only excutes the IEC61131-3 language & in simulated mode controller doesn't show any load on the controller in system diagnostic block also, so that's you find some diffrernce.