A(n) __________ diagram lets you determine how the machine action affects the PLC inputs and how the PLC outputs affect the machine action.

A power diagram is instrumental in understanding the relationship between a machine's actions and the corresponding PLC inputs and outputs. This type of diagram illustrates the electrical flow and connections within a system, highlighting how the machine operates in relation to the power supply and control circuits of the PLC.

The power diagram essentially shows how the activation of certain outputs of the PLC (like relays or contactors) can lead to specific actions in a machine, such as starting a motor or opening a valve. Conversely, it also indicates how the state of the machine (for instance, whether a sensor detects an object) influences the inputs to the PLC, affecting its logic processing and control decisions.

This visual representation is crucial for troubleshooting and understanding system interactions, making it easier for technicians and engineers to follow the electrical circuit paths and interdependencies between outputs and inputs in the system.