What term describes the controller that holds the I/O configuration for each module it owns?

The term that describes the controller that holds the I/O configuration for each module it owns is "Owner." In the context of a PLC system, the Owner is responsible for managing the resources and configuration of the individual input and output modules connected to it. Each module's configuration, including its address, type, and operational parameters, is stored in the Owner's memory, allowing it to effectively communicate with and control these modules.

The correct terminology reflects the functional role of the controller in the system. It emphasizes the hierarchical relationship between the controller and the associated I/O modules, allowing for organized management of the system architecture. The Owner must be aware of all connected devices to facilitate proper data flow and operational commands.

In industrial applications, this clear definition is crucial for ensuring that each component operates in harmony within the automation system. Given this context, other terms may not accurately convey the specific role related to holding the configuration details for I/O modules.