[ WEB PLC ] 4 Doors Interlock

2023-11-15

Conditions:

4 Doors Interlock: When one of the doors is unlocked, other 3 doors could not be unlocked until that door is closed

Feature：

Door Relay time 6 Secs
Auto Relock
Open Too Long Alarm 8 Secs
Force Open Alarm
Stop Alarm by Close Door
Fire Alarm Trigger All Doors

Contact Description:

Door	DI Address PB	DI Address Door Sensor	DO Address Door Relay	DO Address Alarm
Door A	DIX₀	DIX₁	DOY₀	DOY₁
Door B	DIX₂	DIX₃	DOY₂	DOY₃
Door C	DIX₄	DIX₅	DOY₄	DOY₅
Door D	DIX₆	DIX₇	DOY₆	DOY₇
Fire DI	DIX₁₆

Case Explanation :

We will use Door A as example to explain the program logic:

1. When the door sensor DIX3/DX5/DIX7 and the door lock relay DOY2/DOY4/DOY6 of door B/door C/door D are closed, press Door A push button DIX0 , the door lock relay DOY0 can be trigger on 6 seconds.

2. When the fire alarm input DIX16 is closed, the door lock relay of door A/door B/door C/door D can be released on;

3. When the door sensor DIX1 of door A is closed, the door lock relay of door A can be automatically relocked;

4. When the door sensor DIX1 of door A is forced to open and the door relay DOY0 of door A is off, the alarm relay DOY1 of door A will be turned on;

5. When the door sensor DIX1 of door A is open, the timer TMR0 is triggered. When TMR0 is more than 8 seconds, the door open too long alarm relay DOY1 is triggered.

6. When the door sensor DIX1 of door A is closed, the alarm relay DOY1 can be stopped.

WEB Setting:

Ladder Programming:

X0/X1/…/Xn represent actual input DIX0/DIX1/…/DIXn
Y0/Y1/…/Yn represent actual output DOY0/DOY1/…/DOYn
M0/M1/…/Mn represent virtual output DOM0/DOM1/…/DOMn

701ClientSQL Graphic Control Configuration Steps:

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