![]() Ladder logic programming is by far the largest percentage of use in PLCs today. Not all of these programmable controller languages are available in every PLC. ![]() We will look at all five programming languages as defined by the IEC 61131-3 Standard. It cannot be changed without changing our thinking” PLC programming languages have evolved to both adapt and change the way we program these units. The program is stored in the PLC either in battery-backed-up RAM or some other non-volatile flash memory.Īlbert Einstein said “The world as we have created it is a process of our thinking. This downloaded program is similar to compiled code to keep the program efficient. PLC programs are normally written in a special application on a personal computer, then downloaded to the PLC.
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