Saturday, September 10, 2011

Monitoring memory space in the PLC.

Often used in the PLC to consider that choosing which version to use the CPU will have enough space to run the program. The count is difficult enough to evaluate. Because the function of machines, each machine has a different way of thinking is difficult and complex simplicity. And do not depend on the number of I / O.
So if you find ways to estimate a cursory I can do it without writing a program in advance because the CX-Programmer. Can be simulated. (Must be a joint program with the CX-Simulator).

Steps to use.

1. When writing a program so close to actually work. Is enough to see the capacity of content from programs like the CX-Programmer Tools by going to the Cross-Reference Report or press Alt + x.



2. Press the button Generate.

Total UM status means that all memory of this PLC model.
Free UM status means that the available memory remaining space to tell the normal PLC programming in units of step.

3. Commands each command of the PLC. To use the same memory. Depending on the complexity of the computation of new CPU can see that each step of the orders at the end of Part Programming Manual.


4. Students. Cross-Reference Report in addition to more memory space, the rest of the PLC can also be sure that nothing of the PLC variable that is already taken some Used many times. This would be ideal to modify or add applications. Which can be selected Report type: Usage overview (which is pretty. It shows only the active variables) Memory area: Choose the type of variables to display.

5. And then press the Generate button, the program displays a report describing the use of memory out.

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