Provided is an extension module for independently storing calibration data, including: a first interface, adapted to receive a first external input signal; a second interface, adapted to output the first output signal of the extension module; a signal processing circuit, connected between the first interface and the second interface; and a first memory, the first memory storing first calibration data, and the first calibration data being associated with the extension module. Furthermore, also provided is a component using the above extension module, and a component calibration method. On the one hand, the extension module of an embodiment may share an ADC sampling circuit on a main module, so that the manufacturing cost of the extension module is reduced. On the other hand, an embodiment can facilitate the replacement of different extension modules for the main module without repeated calibration.

An apparatus and system is disclosed connected to at least one input/output (I/O) module and to at least one controller of an industrial distributed control system. The apparatus and system comprises a control network module having a control component that uses a processor to execute operating software that implements operating configurations for the control network module. At least one I/O port is connected to the control component that is configurable by the operating software to enable port configurations to connect the at least one I/O module to the control network module. An expansion component connected to the control component has at least one expansion port connected to the at least one controller. The expansion port connects the at least one controller to the control component for communicating data and control signals to and from the at least one controller to the at least one I/O module. A security component regulates access to the apparatus based upon one or more security attributes.

Provided is an extension module for independently storing calibration data, including: a first interface, adapted to receive a first external input signal; a second interface, adapted to output the first output signal of the extension module; a signal processing circuit, connected between the first interface and the second interface; and a first memory, the first memory storing first calibration data, and the first calibration data being associated with the extension module. Furthermore, also provided is a component using the above extension module, and a component calibration method. On the one hand, the extension module of an embodiment may share an ADC sampling circuit on a main module, so that the manufacturing cost of the extension module is reduced. On the other hand, an embodiment can facilitate the replacement of different extension modules for the main module without repeated calibration.

A customizable pool automation control system includes a system housing defining a protective enclosure. A processor is located within the housing. A plurality of expansion slots are formed with the housing, and operatively communicate with the processor. A plurality of modular external expansion cards are adapted for being custom selected by a user and inserted into respective expansion slots. The expansion cards are selected from a group consisting of a chlorine generator control, a water level control, a camera control, a valve actuator control, and a relay control.

An apparatus and system is disclosed connected to at least one input/output (I/O) module and to at least one controller of an industrial distributed control system. The apparatus and system comprises a control network module having a control component that uses a processor to execute operating software that implements operating configurations for the control network module. At least one I/O port is connected to the control component that is configurable by the operating software to enable port configurations to connect the at least one I/O module to the control network module. An expansion component connected to the control component has at least one expansion port connected to the at least one controller. The expansion port connects the at least one controller to the control component for communicating data and control signals to and from the at least one controller to the at least one I/O module. A security component regulates access to the apparatus based upon one or more security attributes.