In a PLC which is having a 128Kb memory how many rungs I can create in it
Or in other words how many words (not %MW, just making random word) can I create in a 128Kb memory PLC
If it is limited can I use SD card to make more of it
Please help me coz I'm new in this automation field with a lot of doubts
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You can look in the following document for example:
It is mentioned VAR data = 10 kB and 1 kB for VAR retain. May be there are some slight differences, depending of your CPU type
The SD memory card can be used to load and save retentive variables (RETAIN, %R area) - type sd card in codesys help.
But I don't think for extend the memory of the CPU.