Ladder Logic Examples

PLC Program for conditional control logic

Forward reverse control for three phase asynchronous motor

Automatic Parameter initialization when power up

Water filling and discharging process using S7-1200 PLC

Automatic Liquid mixing Application.

Automatic lamp ONOFF in GODOWN.

Two ways switch logic for staircase light in house.

Sequential control logic PLC

Drain same product from two tanks

A program to implement D flip flop in PLC 

A program to implement SR flip flop in PLC

A program for part counting on conveyor 

Read temperature in S7-300 PLC

Analog scaling in S7-300 PLC 

IEC timers used in S7-1200 

Automatic level controlling of Series Tanks 

Automatic level controlling of Parallel Tanks

A program to implement totalizer in S7-1200 

ON/OFF output with PLC 

Burglar Alarm Security System 
Automatic heating and mixing of products
An artificial fishpond monitoring system
Blinking (ON/OFF) on 5sec interval
Alternate output circuit with latched function
Negative edge pulse output for one scan cycle.
Entry/Exit control of the basement and underground car park.
PLC Program to implement Logic Gates (AND, OR, NOT, NOR, NAND, EX-OR and EX-NOR)
Positive edge pulse output for one scan cycle.
Alarm indication in process.