hello sir, am not able to retain values in PM564.kindly hel p me sir... am a beginner in ABB PLC
First of all you don't need to use TA562 Battery, eCo Series CPU's suports retain values, without battery.
Also you have to declare variables as retain, for example declare variables under PLC_PRG. If you declare these variables under Global Variables, you can not store latest values.
Hope it helps you.