1. Design, build and test a ladder-logic program to meet the functional specifications of the following heater control system: Functional Specifications: Five high-power heaters, each having its own individual thermostat (Open/Closed) are to be operated as described below. Each heater is turned ON by energizing its respective relay coil, using a dedicated PLC output, when its thermostat is closed and the conditions are right. Heaters A & B have top priority and their respective coils may be energized at any time. Coils A & B and Thermostats A & B are simulated using panel lights 2 & 3 and switches 2 & 3. Heater C has the next priority and its coil may be energized only if: "Heater A coil is energized while HEATER B coil is de-energized OR Heater B coil is energized while HEATER A coil is de-energized OR both Heaters A & B coils are de-energized. Coil C and Thermostat C are simulated using panel light 4 and switch 4. Heater D has the lowest priority and its coil may be energized only if: Not more than one of the Heaters A, B or C coil is energized. (Note that Heater D coil is allowed to be energized when coils A, B and C are all de- energized) Coil D and Thermostat D are simulated using panel light 5 and switch 5. Heater E may only be turned on if: The Heaters A and D coils are energized. Coil E and Thermostat E are simulated using panel light 6 and switch 6. IMPORTANT: When implementing the system, you MUST simulate the operation of the system coils and thermostats using the specific Allen-Bradley panel lights and switches that are defined in the above functional description. 1. Design, build and test a ladder-logic program to meet the functional specifications of the following heater control system: Functional Specifications: Five high-power heaters, each having its own individual thermostat (Open/Closed) are to be operated as described below. Each heater is turned ON by energizing its respective relay coil, using a dedicated PLC output, when its thermostat is closed and the conditions are right. Heaters A & B have top priority and their respective coils may be energized at any time. Coils A & B and Thermostats A & B are simulated using panel lights 2 & 3 and switches 2 & 3. Heater C has the next priority and its coil may be energized only if: "Heater A coil is energized while HEATER B coil is de-energized OR Heater B coil is energized while HEATER A coil is de-energized OR both Heaters A & B coils are de-energized. Coil C and Thermostat C are simulated using panel light 4 and switch 4. Heater D has the lowest priority and its coil may be energized only if: Not more than one of the Heaters A, B or C coil is energized. (Note that Heater D coil is allowed to be energized when coils A, B and C are all de- energized) Coil D and Thermostat D are simulated using panel light 5 and switch 5. Heater E may only be turned on if: The Heaters A and D coils are energized. Coil E and Thermostat E are simulated using panel light 6 and switch 6. IMPORTANT: When implementing the system, you MUST simulate the operation of the system coils and thermostats using the specific Allen-Bradley panel lights and switches that are defined in the above functional description