Password using PLC

Simulation Password 



Detail for Password Using PLC


Information on Numbers for Detail the Password Using PLC : 
1. KeyPad with 10 Numeric and 1 Enter (Numeric KeyPad)
2. PLC (Programmable Logic Controller)
3. Red Light for Wrong Password
4. Green Light for Correct Password 


Wiring from the Numeric KeyPad to PLC


Information on Wiring from the Numeric KeyPad to PLC : 
1. Input 0 PLC for Numeric 0 from KeyPad
2. Input 1 PLC for Numeric 1 from KeyPad
3. Input 2 PLC for Numeric 2 from KeyPad
4. Input 3 PLC for Numeric 3 from KeyPad
5. Input 4 PLC for Numeric 4 from KeyPad
6. Input 5 PLC for Numeric 5 from KeyPad
7. Input 6 PLC for Numeric 6 from KeyPad
8. Input 7 PLC for Numeric 7 from KeyPad
9. Input 8 PLC for Numeric 8 from KeyPad
10. Input 9 PLC for Numeric 9 from KeyPad
11. Input 10 PLC for ENTER from KeyPad 

Number Of Inputs and Output PLC applied :
1. Number Of Inputs PLC is 11 Input :
--- 11 Unit Input from Numeric KeyPad 
--- Total Number Of Inputs PLC is Minimum 11 Input Unit. 

2. Number Of Output PLC is 2 Output :
--- 1 Unit Output to Red Light for Wrong Password 
--- 1 Unit Output to Green Light for Correct Password 
--- Total Number Of Outputs PLC is Minimum 2 Output Unit. 


Sequence PLC Programming for Password PLC : 

1. Correct Password
a. If typing "5500" from KeyPad AND "ENTER" from KeyPad then Green Light = ON (Correct Password) 

2. Wrong Password
a. If NOT typing "5500" from KeyPad AND "ENTER" from KeyPad then Red Light = ON (Wrong Password) 

3. Password Data
a. Password data using PLC memory (With Value 5500) and can be modified 

4. Green Light = OFF OR Red Light = OFF
a. If Enter Released AND Typing again then Green Light = OFF OR Red Light = OFF
(source : http://program-plc.blogspot.com)