An internal control relay:

A) does not directly control an output field device.
B) is not controlled by the programmed logic.
C) is used primarily to control the internal power to the processor module.
D) is used primarily when controlling multiple output circuits.

Internal Control Relay

A virtual relay used within a PLC program to perform logic operations without physical hardware.

Output Field Device

Output field devices are components in a control system that receive signals from a controller to perform actions, such as actuators, valves, or lights, translating control signals into physical operations.

Programmed Logic

The application of logical operations to inputs to achieve a desired output, often implemented in programmable logic controllers (PLCs) or software.