A first component of an industrial automation system includes an electrically erasable programmable read-only memory (EEPROM) storing data identifying the first component. The data identifying the first component is read from the EEPROM by a second component to which the first component is communicatively coupled to authenticate the first component. The first component lacks a processor and a microcontroller, and does not run firmware.

Electronic equipment can include an equipment body and a magnetic sensor apparatus assembled to the equipment body. The magnetic sensor apparatus can be provided with at least two magnetic field detectors. Any two magnetic field detectors sense a magnetic field respectively in two different sensing directions. A control circuit sends a sensor signal to a motherboard only when each magnetic field detector senses, in a respective sensing direction, external magnetic induction of no less than a respective preset threshold corresponding to the each magnetic field detector. The motherboard sends a control signal to control the equipment body according to the sensor signal.

Disclosed is an industrial control device including a point-to-point backplane/point module architecture providing RIUP (Removal and Insertion Under Power) functionality where data communications between modules is maintained after the removal of a point module from the backplane. According to an exemplary embodiment, a backplane includes a plurality of bypass switches controlled by respective point modules, whereby data communicated bypass a removed point module interface and point-to-point data communications are provided to an inserted point module after an initial routine is executed by a microcontroller associated with the inserted point module.

Electronic equipment can include an equipment body and a magnetic sensor apparatus assembled to the equipment body. The magnetic sensor apparatus can be provided with at least two magnetic field detectors. Any two magnetic field detectors sense a magnetic field respectively in two different sensing directions. A control circuit sends a sensor signal to a motherboard only when each magnetic field detector senses, in a respective sensing direction, external magnetic induction of no less than a respective preset threshold corresponding to the each magnetic field detector. The motherboard sends a control signal to control the equipment body according to the sensor signal.

The present disclosure provides a serial backplane based PLC system with a hot swap function in which when an extended module fails during communication between the backplane master unit and the backplane slave unit, communication between the backplane master unit and the backplane slave unit via the backplane bus is maintained using a backplane design technique. The system includes a central processor unit (CPU) module for transmitting an operation command; at least one extended module for receiving and processing the operation command; a backplane bus connected to a bus line for communication between the CPU module and the extended modules; and at least one backplane module connected to the backplane bus, wherein the at least one backplane module is physically detachably coupled to the at least one extended module, respectively.

A first component of an industrial automation system includes an electrically erasable programmable read-only memory (EEPROM) storing data identifying the first component. The data identifying the first component is read from the EEPROM by a second component to which the first component is communicatively coupled to authenticate the first component. The first component lacks a processor and a microcontroller, and does not run firmware.