Basic PLC Ladder Programming Training Examples for Beginners.
Hi friends here we are starting here a series of Free Training on PLC Ladder Programming training & tutorials. These PLC Ladder Programs are important to get basics of Ladder programs.
PLC Ladder Practice Problem:
Enabling the indicator to be ON after a 5 sec delay and OFF after a 3 sec delay by the switch.
Basic PLC Ladder Programming Training Examples
Topics Covered in this example is PLC Timer (ON Delay & OFF Delay).
Number of PLC Inputs Required
X1 – Start Switch.
Number of PLC Outputs Required
Y1 – Output Indicator
Number of PLC Timer Required
T0 – 5 second Timer, 100 ms Time Base. (See K50 Preset Value for Timer)
T1 – 3 second Timer, 100 ms Time Base. (See K30 Preset Value for Timer)
PLC Ladder Programming:
PLC Ladder Programming Training Examples
PLC Ladder Program Description:
·When X1 = ON, T0 will start counting for 5 sec. When T0 reaches its set value, the NO contact T0 will be ON while NC contact T1 will remain OFF, which
makes the indicator Y1 to be ON and latched.
·When X1 = OFF, T1 will start counting for 3 sec. When T1 reaches its set value, the NC contact T1 will be activated while the NO contact T0 will remain
OFF, which makes the indicator Y1 to be OFF.
Note: Example is only for training purposes. No practical implementation is done. See More PLC Ladder Programming Examples
