Do the AC500 eCo PLC need memory module or backup battery to keep program at power down?
I do use an AC500 eCO PLC , each time i desconnect the power from the CPU i find out the the application program had been lost .
do i have to use memory card for saving the program?
what is the type of it? is it something that i need to buy from ABB?
do i need to install additional hardware?
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