**PLC Type KV, Name Input / Output PLC :**

**INPUT PLC :**

0000 ; Numeric 0 from KeyPad

0001 ; Numeric 1 from KeyPad

0002 ; Numeric 2 from KeyPad

0003 ; Numeric 3 from KeyPad

0004 ; Numeric 4 from KeyPad

0005 ; Numeric 5 from KeyPad

0006 ; Numeric 6 from KeyPad

0007 ; Numeric 7 from KeyPad

0008 ; Numeric 8 from KeyPad

0009 ; Numeric 9 from KeyPad

0010 ; ENTER Key from KeyPad

**OUTPUT PLC :**

0500 ; Output to Green Light for Correct Password

0501 ; Output to RRed Light for Wrong Password

Download PDF File:

password using plc keyence(.pdf)

Reading Ladder

**PLC Programming**for

**Password**using PLC Keyence :

**Step 1 :**

Password Data using DM0020

Password Data using DM0020

**a.**If 2002 = ON (Always ON) Then DM0020 = 5500 (can be modified and 4 Digits Decimal)

**Step 2 :**

Numeric 0 to 9 is pressed

Using DM0000 for temporary data storage

Numeric 0 to 9 is pressed

Using DM0000 for temporary data storage

**a.**If 0000 = ON (Numeric 0) Then DIFU 1000 = ON AND DM0000 = 0

**b.**If 0001 = ON (Numeric 1) Then DIFU 1000 = ON AND DM0000 = 1

**c.**If 0002 = ON (Numeric 2) Then DIFU 1000 = ON AND DM0000 = 2

**d.**If 0003 = ON (Numeric 3) Then DIFU 1000 = ON AND DM0000 = 3

**e.**If 0004 = ON (Numeric 4) Then DIFU 1000 = ON AND DM0000 = 4

**f.**If 0005 = ON (Numeric 5) Then DIFU 1000 = ON AND DM0000 = 5

**g.**If 0006 = ON (Numeric 6) Then DIFU 1000 = ON AND DM0000 = 6

**h.**If 0007 = ON (Numeric 7) Then DIFU 1000 = ON AND DM0000 = 7

**i.**If 0008 = ON (Numeric 8) Then DIFU 1000 = ON AND DM0000 = 8

**j.**If 0009 = ON (Numeric 9) Then DIFU 1000 = ON AND DM0000 = 9

Note : DIFU = Single-scan of target relay ON at rising edge of previous state

**Step 3 :**

Count the number keypad is pressed

Using DM0030 for Count data storage

Count the number keypad is pressed

Using DM0030 for Count data storage

**a.**If 1000 = ON Then INC DM0030 (Increment target device value)

**Step 4 :**

Enter Released for Value DM0030 = 0 (Count data RESET)

Enter Released for Value DM0030 = 0 (Count data RESET)

**a.**If 0010 = ON (ENTER key is pressed) Then DIFD 1001 = ON (Single-scan of target relay ON at falling edge of previous state)

**b.**If 1001 = ON Then Value DM0030 = 0

**Step 5 :**

Password from the KeyPad

Using DM0012 for Password from the KeyPad

Password from the KeyPad

Using DM0012 for Password from the KeyPad

**a.Keypad is pressed first, multiplied by 1000**

(1000 = ON) AND (LDA DM0030) AND (CMP#0001) AND (2010) AND (LDA DM0000) AND (

**MUL #01000**) AND (STA DM0001)

**b.Keypad is pressed second, multiplied by 100**

(1000 = ON) AND (LDA DM0030) AND (CMP#0002) AND (2010) AND (LDA DM0000) AND (

**MUL #00100**) AND (STA DM0002)

**c.Keypad is pressed three, multiplied by 10**

(1000 = ON) AND (LDA DM0030) AND (CMP#0003) AND (2010) AND (LDA DM0000) AND (

**MUL #00010**) AND (STA DM0003)

**d.Keypad is pressed four, multiplied by 1**

(1000 = ON) AND (LDA DM0030) AND (CMP#0004) AND (2010) AND (LDA DM0000) AND (

**MUL #00001**) AND (STA DM0004)

**e.Sum all the data**

(1000 = ON) AND (LDA DM0001) AND (ADD DM0002) AND (STA DM0010)

(1000 = ON) AND (LDA DM0010) AND (ADD DM0003) AND (STA DM0011)

(1000 = ON) AND (LDA DM0011) AND (ADD DM0004) AND (STA

**DM0012**)

**Example :**

Keypad is pressed :

first : Numeric 9 => 9 multiplied by 1000 = 9000

second : Numeric 6 => 6 multiplied by 100 = 600

three : Numeric 5 => 5 multiplied by 10 = 50

four : Numeric 7 => 7 multiplied by 1 = 7

Sum all the data = 9000 + 600 + 50 + 7 = 9657

**So,Password from the keypad is 9657**

**Step 6 :**

Check the number of digits

Check the number of digits

**a.**If DM0030 = 4 (4 times the keypad is pressed) Then 1002 = ON

**Step 7 :**

Correct Password

Correct Password

**a.**If 0010 = ON (ENTER key is pressed) AND 1002 = ON AND Value(DM0012 = DM0020) Then SET 1003 = ON

**b.**If 1003 = ON Then 0500 = ON (Correct Lamp)

**Step 8 :**

Wrong Password and Not 4 digits

Wrong Password and Not 4 digits

**a.**If 0010 = ON (ENTER key is pressed) AND 1002 = ON AND Value(DM0012 not same DM0020) Then SET 1004 = ON

**b.**If 0010 = ON (ENTER key is pressed) AND 1002 = OFF AND 1003 = OFF AND 1004 = OFF Then SET 1005 = ON (Not 4 digits)

**c.**If 1004 = ON OR 1005 = ON Then 0501 = ON (Wrong Lamp)

**Step 9 :**

Green Light = OFF OR Red Light = OFF

Green Light = OFF OR Red Light = OFF

**a.**If 1000 = ON AND 1003 = ON OR 1004 = ON OR 1005 = ON Then RES 1003 (1003 = OFF) AND RES 1004 (1004 = OFF) AND RES 1005 (1005 = OFF)

Please Download Programming for KV Builder :

**Password Using PLC Keyence**

See :

**Password PLC**