![]() Adding a New Rung – PLC Online Editor and Simulator You will see that the motor remains on through the sealing contact in parallel with the start button. Now turn OFF the start button by clicking the ON. The motor will turn on through the normally closed contacts of the stop button. The start contacts will turn green to indicate that it is on. Using you mouse click the OFF symbol next to the start button. We will now look at the simulation of the PLC logic. (This is why the stop button is shown as a normally closed contact.) This is controlling a motor from the start and stop pushbuttons which are wired up as physically normally open. The default logic is a start stop circuit. This area is where you will build and monitor your logic in action. Trash – Allows you to delete items from your PLC logic. Save – Save your project with a unique URL.Īdd Rung – Add a rung to the bottom of the current program.īranch Circuit – Add an ‘or’ logic branch to your program. On Delay Timer, Off Delay Timer, Retentive Timer, Count Up, Count Down, Reset Other – PLC Fiddle Instructions Greater Than, Less Than, Greater Than or Equal, Less Than or Equal, Equal, Not Equal Time/Count – PLC Fiddle Instructions ![]() Output, Latch, Set, Unlatch, Reset Math – PLC Fiddle InstructionsĪdd, Subtract, Multiply, Divide, Move Compare – PLC Fiddle Instructions Normally Open, Examine On, Normally Closed, Examine Off Coils – PLC Fiddle Instructions These contain all of the different items that you can use in you PLC logic or methods. ![]() The instructions have several different tabs. Learn PLC Programming Free Now - Video Instructions – PLC Online Editor and Simulator ![]()
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