15. Programming Languages of PLCs (Text-Based Languages)

4. Structured Text (ST) Description: A high-level programming language with syntax similar to Pascal or C. Very powerful and flexible. Applicable Scenarios: Complex mathematical calculations, algorithms, data processing. Example: Analog Temperature PID Control (Simplified) Control Requirements: Read the temperature value, compare it with the set point, and output a control signal through PID computation. Character … Read more

The Five Core Programming Languages Commonly Used in PLCs

The Five Core Programming Languages Commonly Used in PLCs

01Ladder Diagram (LD) · Features: A graphical language similar to electrical relay circuit diagrams, suitable for logical control. · Application Scenarios: Switch logic familiar to traditional electrical engineers (e.g., motor start/stop, interlocking control). 02Instruction List (IL) · Features: A low-level text language similar to assembly, consisting of operation codes and operands. · Application Scenarios: Small … Read more

Motion Control Algorithm Method Based on Instruction List for PLC

Motion Control Algorithm Method Based on Instruction List for PLC

Click the blue text to follow! Motion Control Algorithm Method Based on Instruction List for PLC A few days ago, Xiao Zhang rushed to find me: “Master Li, the automatic feeder on production line three is stuck again, the servo motor is sometimes fast and sometimes slow, and the materials are misaligned!” I sighed, this … Read more

Differences Between PLC Instruction List IL and Assembly Language Programming

Differences Between PLC Instruction List IL and Assembly Language Programming

The PLC Instruction List (IL) and assembly language have significant differences in programming. Here is a detailed comparison of the two: 1. Definition and Use• PLC Instruction List (IL): • It is a commonly used text-based programming language in PLC (Programmable Logic Controller) programming. • It represents control programs in a list of instructions similar … Read more