For example, some software forces the programmer to assign an address for the +ve and–ve edge triggers, in some other software you don’t have to.Īlso, some PLC software will make basic instructions like MOVE or COUNTERs be edge-triggered, so even if the enable signal is still ON, the instruction will be executed only once at the rising edge of the enable signal. Yes, all PLC software follows the IEC 61131-3, but the interpretation can be different. PLC programmers work with so many different brands of PLCs, so they need to be aware of a lot of different PLC software, this is not always a simple task to do, especially since sometimes each software takes a different approach to how it will interpret the IEC 61131-3 standards. Each PLC manufacturer develops their own programming software and their own run time software. With the continuous need for new solutions and abilities to be provided by the PLCs, you can find now an enormous number of PLC manufacturers and PLC brands competing for a share in the industry. PLC is a critical element of any industrial process in fact, most if not all of the industrial revolution is due to the existence and continuous development of the PLCs. Conclusion Different PLC Programming Software.Examples of different brands compatible with CODESYS.
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