ET420 PLC, relay logic controller.
I’m studying for my Engineering class and don’t understand how to answer this. Can you help me study?
1.Explain the following in detail:
a.What is relay logic?
b.What is a ladder logic diagram?
c.What is the meaning of a rung in PLC?
2.Explain in detail how PLCs work.
4.Assume a thermocouple, which supplies the input to an analog input module, generates a linear voltage from 20 to 50 mV when the temperature changes from 750 to 1250°F. How much voltage will be generated when the temperature of the thermocouple is at 1000°F?
5.Create a 5 digit code using the SLC 500 rack/slot-based addressing format for each of the following:
a.A lamp connected to terminal 3 of module group 0 located on rack 2. (5 points)
b.A pushbutton connected to terminal 5 of module group 2 located on rack 1. (5 points)