Does this solution make sense and is there another way to approach this? Scenari

Question

Does this solution make sense and is there another way to approach this?

Scenario
You are an electrical engineer for Packaging, Inc. Your boss has assigned you a project to program a pick-and-place system using a robot to remove cases from a conveyor to a pallet.

Instructions

Instructions

Using the diagram, provide a narrative description of how your system will work.

Then, based on the diagram and your narrative description, develop the following four items

a logic gate diagram (show truth tables)

a relay logic diagram

an I/O list and SLC 500 addressing scheme

a ladder program diagram using the SLC 500 addressing scheme

Solution:

Description: In this automated Packaging Line, cases comes from right hand side i.e. case will reach at labeller case and then will move towards the packaging robot as shown in the figure. The purpose of the Packaging robot is to look for the finished cases and then pick it from the conveyor and then place on the stacking pallet. There is one stopper which will not allow the case to fall down unless it is picked from the robot arm. Robot will be actice only when case present photoeye detects a case at stopper. The flow of the cases are controlled by the controller using the three photoeye present at different conveyor location. Apart from this, there is one start-stop Switchbox for controlling the conveyor.

Truth Table:

Probable Inputs: Case Present Photoeye #1: CP1

Conveyor Photoeye #2: CP2

labeller Photoeye #3: CP3

Pallet Present Photoeye #1: CP1

Probable outputs: start signal for Robot: STRB

Start signal for labeller case, conveyor 2 and conveyor 1 STRC3,STRC2 and STRC1 respectively.

Stop signal for labeller case, conveyor 2 and conveyor 1 STPC3,STPC2 and STPC1 respectively.

Stop signal to stop operation at any point of time HLT

Logic Diagram:

Relay Logic Diagram:

I/O List and SLC 500 addressing scheme:

The I/O List is given below:

The functioning of each of the port is already mentioned in the beginning.

The PLC-5 and SLC-500 use a rack/slot/register/bit method for addressing the I/O modules.

For example input point 12 in slot 2 of rack 1 would be addressed - I:1:2/12. The same goes for outputs.

Ladder program diagram using the SLC 500 addressing scheme:

Explanation / Answer

Ans-

After so many conclusion and practise the solution given to the problem is apt and make sense and according to me there is no other approach/

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