The main function of the ladder logic program is to control outputs based on ______ conditions11/24/2023 ![]() IE 61131-1 Programmable controllers – Part 1: General information.IEC 61131, this standard is broken down into: ![]() This is the most recognized standard which covers the following: Today, the primary standard for programmable logic controller (PLC) programming is defined by the International Electrotechnical Committee (IEC) standard 61131. This deficit was a problem for the industry. ![]() This makes it harder to connect to devices from different manufacturers. Closed architecture is proprietary software that must be purchased from the PLC manufacturer and cannot be copied or modified. Open architecture software is usually free and can be modified, copied and used without being licensed by the manufacturer. Two terms describe PLC software open architecture and closed architecture.
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