HOME I/O- Automatic Open/Close of Entrance Gate

OBJECTIVE:

LATCHING THE OPEN & CLOSE OPERATION OF THE GATE

The Gate should open completely on rising edge of Sensor 1 & Gate should close completely by falling edge of Sensor 2

Control:
Connect I/O. Download Software here
Programming Platform: FBD (Inbuilt Connect I/O)
Environment: Home I/ODownload Software here

Starting Conditions: The Gate is Closed

I/O Signals

Inputs:

Entrance Gate Infrared 1
Entrance Gate Infrared 2
Entrance Gate Opened
Entrance Gate Closed

Output:

Entrance Gate Open
Entrance gate Close

Connect I/O Functions to be used

RTRIG
FTRIG
SR
RS

Step 1: Latching the Opening of Door Using Rising Edge of Sensor 1

We have used the rising edge of Infrared Sensor 1 to latch the output via SR Block. When Sensor sensed the object/person, it will give signal to FTRIG. FTRIG will give 1 Pulse to SR which will latch the Bit 193 & starts opening the gate even if the object in front of the Infrared Sensor 1 is removed

Step 2: Unlatching the Output Bit When Door Is Fully Opened.

Bit 260 Entrance gate Opened is used to unlatch
the Gate Open bit, when the gate is 100% opened. The signal from BIT 260 goes to Reset1 terminal of RS Block which has reset the BIT 193 i.e. opening bit of Gate

Step 3: Latching the Close Operation Using Infrared 2

Similar to Step 1, Infrared Sensor 2 (Bit 263)
is used to close the Entrance gate. Unlike the opening operation, here we have used Falling Edge of Infrared Sensor 2 because, the gate should get command to close when the object/person passed across the Infrared Sensor 2 to avoid collision if the object is in front of Infrared Sensor 2