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2/21/2012 10:37 AM | |
Posts: 1547 Rating: (129) |
Example: 1. DO point 24 2. AI Point 45 3. AO Point 25 4. DI point 35 5. PID controller 15
An overview of specific block's reeeource you can find different descriptions: http://support.automation.siemens.com/WW/view/en/57265833, chapter 5.1 technical data You have to calculate the value for the FB-program once and the value for instance data block for each instance you use, e.g. 15 PID But I think you also will use measurement blocks, motor and valve blocks, interlock blocks... Additionally you will ahve to calculate the system overhead of - system data block SDB0 from HWKonfig - PCS 7 @-plans If you use typical from a library you should check there. But be aware: some typicals are really "over-engineered". So pls check carefully for the correct library before you start calculating. Can you check in a PCS 7 engineering station with an example project? |
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