In a process a thermocouple used is connected to a PLC's 12-bit analog channel. The thermocouple is set to read temperatures between -20 and 200 degrees F. The corresponding voltage range is 0 to 10 V DC. A master solenoid Y controls the whole process and is turned on by a start push button (X1). Implement a program that would perform the following:

i) turn on the first cooling fan if the temperature reaches or exceeds 120 degrees F.

li) turn on the second fan if the temperature is above 140 degrees F.

ili) automatically shut down the whole system if the temperature gets up to 180 degrees.

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