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7 ways to write PLC programs
Seven methods are used to write plc programs: 1. Ladder diagram. 2. Instruction list. 3. Structured text. 4. Function block diagram. 5. Sequence function graph. 6. Wiring diagram. 7. Assembly language. If you want to know more about PLC, you can read the articles below this topic.
What is the plc instruction list and explanation?LD (fetch command): A command that connects a normally open contact to the left bus. This command is used for every logic line starting with a normally open contact. LDI (Negative Instruction) An instruction to connect a normally closed contact to the left bus. This instruction is used for every logic line starting with a normally closed contact. OUT (output command) The command to drive the coil, also called the output command.
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