A little bit other Problem

S7 400 Flash Card with Programm inside. Battery ok.

What happen after power off/on?.  Will it load the program from load memory on flesh card or from load memory of the PLC?. (the whole Program with HW is also on Flash)

Loading Process will start automaticly or need to change a switch run/stop/run?

Can memory card be inserted during PLS is Power on or must be always when PLC is off?

thanks in forward

urban

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Split from Reloading program from RAM memory card in CPU 414-2.

Hmm

Yes a little bit it help but still have some doubts....

What in case when we make some changes to the program on memory card.

So the program in Momory Card is different then this one in Load Memory of PLC and different then this one on Work Memory of PLC. What will happen after restart.Will the program be copied from Load memory of PLC (the old Program) or will it be copied from Memory Card (the new program with changes)?

What kind of restart will cause what.?

I believe when we take off battery and switch off power then during new restart the program with changes will be loaded from Memory Card to the Load memory area and then to the work memory of the plc.

But what will happen when we insert a card when the battery is remaining the program. Will the PLC check for some changes between the program on MC and  Load Memory of PLC and then check which one is newer and then copy the newer program to the work memory, or it will always load only the program from it Load Memory area and doesn't care about the Program on MC as long as we will make a complete erase...?

sound little bit complicated but hope somebody will understand what am i asking about :)