When a field device contact connected to the input module closes:
A)a logic 1 is recorded in the memory location of the coil with the same address.
B)a logic 1 is recorded in the memory location of the contact with the same address.
C)a logic 0 is recorded in the memory location of the coil with the same address.
D)None of these are correct.

Question

Quizplus · Accepted Answer

When a field device contact connected to the input module closes, a logic 1 is recorded in the memory location of the contact with the same address. This is because the contact is a representation of the physical state of the field device, which is now closed. The coil memory location is used to represent the state of the output module, which would be affected if the input signal were used in a control program. Therefore, option A and C are incorrect.

When a Field Device Contact Connected to the Input Module