PLC Simulator

Explore **Ladder Logic (LD)**, **Structured Text (ST)**, and **Function Block Diagram (FBD)** PLC programming.

Select PLC Programming Language:


    // Simple Start/Stop Circuit (Ladder Logic)
    ( )  --[ ]--( )  Start Button
    ( )  --[\]--( )  Stop Button
    ( )  --[ ]--( )  Motor Output


    // Equivalent Structured Text (ST)
    IF Start_Button THEN
        Motor := TRUE;
    END_IF;

    IF Stop_Button THEN
        Motor := FALSE;
    END_IF;


    // Function Block Diagram (FBD)
    (Start_Button) ---> [ OR ] ---> (Motor)
    (Motor)        ---> [ AND ] ---> (Motor)
    (Stop_Button)  ---> [ NOT ] ---> (AND)

Learn more about PLC programming and automation.

Logic Gate Simulator

Test basic **AND, OR, and NOT** logic gates with up to **4 inputs**.

Number of Inputs:

A: B:

Results:

AND Output: -

OR Output: -

NOT (A): -

Learn more about digital logic gates and circuits.