Abstract: An automation system made through a communication network and including: a first and second programmable logic controller respectively executing first and second automation applications to respectively control first and second sets of associated input/output modules; a third programmable logic controller, including a storage storing the first and second automation applications and configured to execute the first automation application to stand in for the first programmable logic controller, or to execute the second automation application to stand in for the second programmable logic controller.

Abstract: A method of managing an electronic microcontroller system, the microcontroller system including: two processors with a first processor configured for execution of a nonsecure application exhibiting a nonguaranteed level of functional security and integrity, and a second processor dedicated to execution of a secure application implementing code and data, and involving a guaranteed level of functional security and integrity, the secure application to implement a security function; and a mechanism to access to a shared memory space. The first processor includes a unit for managing the memory configured to implement a write access control, to manage write access to the shared memory space, that is not modifiable when the secure application implements its security function.

Abstract: The invention relates to an input module (32) for a programmable logic controller able to be connected to a plurality of elements of an automated chain, the module (32) comprising: inputs (32A, 32B), each input (32A, 32B) being able to receive the signal from at least one element of the plurality of elements, interfaces (40A, 40B), each interface (40A, 40B) being associated with a single input and comprising at least one output (40A6, 40B6) able to operate in three different states, a test block (42), and a processing sub-module (24) able to compare the state of the output (40A6, 40B6) of each interface (40A, 40B) with the state imposed by the test block (42) and to deduce an operating anomaly of the module (32, 34) therefrom.

Abstract: An overvoltage protection device that can be adapted to a programmable automaton power supply, including: a first detection and protection device configured to detect a possible overvoltage at a first point of a primary or secondary circuit, and including a mechanism triggering a short-circuit if an overvoltage is detected at the first point such as to stop all energy transfer toward the output of said power supply; and a second detection and protection device configured to detect a possible overvoltage at a second point of the primary or secondary circuit, and including a mechanism triggering a short-circuit if an overvoltage is detected at the second point such as to stop all energy transfer toward the output of said power supply; and a thyristor having an independent power supply and configured to maintain, by memory effect, the short-circuit that may have occurred.

Abstract: An automation system made through a communication network and including: a first and second programmable logic controller respectively executing first and second automation applications to respectively control first and second sets of associated input/output modules; a third programmable logic controller, including a storage storing the first and second automation applications and configured to execute the first automation application to stand in for the first programmable logic controller, or to execute the second automation application to stand in for the second programmable logic controller.

Abstract: The invention relates to an input module (32) for a programmable logic controller able to be connected to a plurality of elements of an automated chain, the module (32) comprising: inputs (32A, 32B), each input (32A, 32B) being able to receive the signal from at least one element of the plurality of elements, interfaces (40A, 40B), each interface (40A, 40B) being associated with a single input and comprising at least one output (40A6, 40B6) able to operate in three different states, a test block (42), and a processing sub-module (24) able to compare the state of the output (40A6, 40B6) of each interface (40A, 40B) with the state imposed by the test block (42) and to deduce an operating anomaly of the module (32, 34) therefrom.

Abstract: An overvoltage protection device that can be adapted to a programmable automaton power supply, including: a first detection and protection device configured to detect a possible overvoltage at a first point of a primary or secondary circuit, and including a mechanism triggering a short-circuit if an overvoltage is detected at the first point such as to stop all energy transfer toward the output of said power supply; and a second detection and protection device configured to detect a possible overvoltage at a second point of the primary or secondary circuit, and including a mechanism triggering a short-circuit if an overvoltage is detected at the second point such as to stop all energy transfer toward the output of said power supply; and a thyristor having an independent power supply and configured to maintain, by memory effect, the short-circuit that may have occurred.

Abstract: A method of managing an electronic microcontroller system, the microcontroller system including: two processors with a first processor configured for execution of a nonsecure application exhibiting a nonguaranteed level of functional security and integrity, and a second processor dedicated to execution of a secure application implementing code and data, and involving a guaranteed level of functional security and integrity, the secure application to implement a security function; and a mechanism to access to a shared memory space. The first processor includes a unit for managing the memory configured to implement a write access control, to manage write access to the shared memory space, that is not modifiable when the secure application implements its security function.

Abstract: A device for controlling point-to-point communication between a module and a transmission bus, the device including a printed circuit that carries the transmission bus and that includes a connection element to connect the module to the transmission bus. The printed circuit includes a communication control unit disposed between the transmission bus and the connection element, the communication control unit includes unidirectional communication logic gates, and a logic control circuit for the logic gates. Such a device may, as an example, find application to programmable controllers.

Abstract: The invention relates to a device for controlling point-to-point communication between a module (10) and a transmission bus (22), the device comprising a printed circuit (20) which carries the transmission bus (22) and which comprises a connection element (21) intended to connect the module (10) to the transmission bus (22). The printed circuit (20) comprises a communication control unit (23) disposed between the transmission bus (22) and the connection element (21), the said unit (23) comprising unidirectional communication logic gates (24E, 24R), and comprises a logic control circuit (30) for the said logic gates (24E, 24R). Application to programmable controllers.

Abstract: This invention is a system for remotely loading and remotely maintaining an electronic card (5) belonging to automation equipment and comprising a minimum of a processing unit (31), an internal bus (30) and a resources controller (10) which has one or more JTAG interface registers (42, 43) accessible for reading/writing by a JTAG server (50) that is external to the automation equipment. The resources controller (10) contains a status engine (11) capable of interpreting and carrying out instructions stored in one or more of the JTAG interface registers (43) and able to use the resources (21a, 21b, 21i) managed by the resources controller (10) and shared with the processing unit (31), without the intervention of the processing unit (31).

Abstract: This invention is a system for remotely loading and remotely maintaining an electronic card (5) belonging to automation equipment and comprising a minimum of a processing unit (31), an internal bus (30) and a resources controller (10) which has one or more JTAG interface registers (42, 43) accessible for reading/writing by a JTAG server (50) that is external to the automation equipment. The resources controller (10) contains a status engine (11) capable of interpreting and carrying out instructions stored in one or more of the JTAG interface registers (43) and able to use the resources (21a, 21b, 21i) managed by the resources controller (10) and shared with the processing unit (31), without the intervention of the processing unit (31).