the program using Siemens LOGO ( programmable relays)

image above is the example of the LOGO programming.

LOGO programming is the easy programming to be program because it just use logic gate to program.

LOGO programming is the alternative to replace the relay circuit that more complicated and need to build much circuit to function it. this system can be insert 4 input and maximum output are 8 output.

image above show the first simulation for the first counter. the counter count for 20 minutes before the circuit follow up for the next function. red wire in the circuit shows the simulation running but in blue wire means that the system hold until the counter finish to count.