Abstract: The present disclosure relates to a method for managing a parameter of a communication-based master-slave control system, and has an effect of storing and applying parameters of all slave devices in a non-volatile memory in a master device, thereby enabling the slave devices to be set-up in a position where an operator is difficult to access or dangerous by a parameter stored in the master device, thereby simplifying maintenance of the slave devices and ensuring safety of a user.

Abstract: A communication device according to an embodiment of the present disclosure comprises: a communicator; and a processor configured to: if a network composed of a first topology including a star topology or a line topology is included on a communication path connecting the communication device and the other communication device, configure data to be transmitted to the other communication device through a first interface for accessing a RAPIEnet (Real-time Automation Protocol for Industrial Ethernet)-based upper layer and an Internet Protocol (IP)-based lower layer, and transmit the data to the other communication device through the communicator using the communication path.

Abstract: A communication device according to an embodiment of the present disclosure comprises: a communicator; and a processor configured to: if a network composed of a first topology including a star topology or a line topology is included on a communication path connecting the communication device and the other communication device, configure data to be transmitted to the other communication device through a first interface for accessing a RAPIEnet (Real-time Automation Protocol for Industrial Ethernet)-based upper layer and an Internet Protocol (IP)-based lower layer, and transmit the data to the other communication device through the communicator using the communication path.

Abstract: The present disclosure relates to a method for managing a parameter of a communication-based master-slave control system, and has an effect of storing and applying parameters of all slave devices in a non-volatile memory in a master device, thereby enabling the slave devices to be set-up in a position where an operator is difficult to access or dangerous by a parameter stored in the master device, thereby simplifying maintenance of the slave devices and ensuring safety of a user.

Abstract: The present disclosure relates to a method for network recovery when a communication failure has occurred in a RAPIEnet system. According to the present disclosure, through periodic transmission of a message for inspecting whether a network communication failure has occurred between LNM devices or between RNMs in a ring- or line-shaped network in a RAPIEnet system, it is possible to accurately determine whether a network has a communication failure, and recover the network without imposing a burden on the network.

Abstract: The present disclosure relates to a method for network recovery when a communication failure has occurred in a RAPIEnet system. According to the present disclosure, through periodic transmission of a message for inspecting whether a network communication failure has occurred between LNM devices or between RNMs in a ring- or line-shaped network in a RAPIEnet system, it is possible to accurately determine whether a network has a communication failure, and recover the network without imposing a burden on the network.

Abstract: The present disclosure relates to a method for setting a link speed of a dual port switch, and more particularly, to a method for setting a link speed of a dual port switch, which controls link speeds of ports, which are included in the dual port switch using a cut-through packet switching scheme, to be equal to each other.

Abstract: In some embodiments, a PLC system including a first CPU comprising a first media access control (MAC) communications layer and configured to generate data necessary for operation of the CPU, perform control operation based on the generated data, and transmit the generated data to a second CPU via the first MAC communications layer is included. The PLC system may further include the second CPU comprising a second MAC communications layer receiving the generated data via the first MAC communications layer and configured to perform service operation based on the received data. The first CPU may be connected to a memory in which data to be transmitted to the second CPU is stored at a predetermined location, and the second CPU may receive the data stored in the predetermined location of the memory by a direct memory access (DMA) scheme.

Abstract: The present disclosure relates to a frame reception monitoring method, including: when a plurality of sub-frames constituting a frame is each entered into a reception buffer at certain time intervals, allowing the respective sub-frames to be stored on a temporal buffer; allowing the plurality of sub-frames stored on the temporal buffer to be entered into a service buffer within a predetermined inter-sub-frames time-out time; using the plurality of sub-frames entered into the service buffer to generate a combined frame; and using the combined frame to execute a control.

Abstract: The present disclosure relates to a hardware protocol stack, and more particularly, to a hardware protocol stack to which a user-defined protocol is applicable. The present disclosure compares header information stored in a register unit with header information of a received frame, and determines a processing of the received frame on the basis of a comparison result. Also, according to a determined frame process method, data of the received frame is processed based on a logic according to the header information, it is stored at a designated position, or a response frame is transmitted.

Abstract: In some embodiments, a method of automatically setting a protocol is performed in a protocol automatic setting server communicating with a client in a Programmable Logic Controller (PLC) system. The method can include receiving a request frame from a client; analyzing a protocol of the request frame based on a protocol stack and determining a response frame corresponding to the request frame according to an analysis result; and transmitting the response frame to the client. The server can automatically analyze a request frame from the client based on the protocol stack, and thus conventional protocol presetting can be eliminated.

Abstract: The present disclosure relates to a method for setting a link speed of a dual port switch, and more particularly, to a method for setting a link speed of a dual port switch, which controls link speeds of ports, which are included in the dual port switch using a cut-through packet switching scheme, to be equal to each other.

Abstract: The present disclosure relates to a frame reception monitoring method, including: when a plurality of sub-frames constituting a frame is each entered into a reception buffer at certain time intervals, allowing the respective sub-frames to be stored on a temporal buffer; allowing the plurality of sub-frames stored on the temporal buffer to be entered into a service buffer within a predetermined inter-sub-frames time-out time; using the plurality of sub-frames entered into the service buffer to generate a combined frame; and using the combined frame to execute a control.

Abstract: The present disclosure relates to a hardware protocol stack, and more particularly, to a hardware protocol stack to which a user-defined protocol is applicable. The present disclosure compares header information stored in a register unit with header information of a received frame, and determines a processing of the received frame on the basis of a comparison result. Also, according to a determined frame process method, data of the received frame is processed based on a logic according to the header information, it is stored at a designated position, or a response frame is transmitted.

Abstract: In some embodiments, a PLC system including a first CPU comprising a first media access control (MAC) communications layer and configured to generate data necessary for operation of the CPU, perform control operation based on the generated data, and transmit the generated data to a second CPU via the first MAC communications layer is included. The PLC system may further include the second CPU comprising a second MAC communications layer receiving the generated data via the first MAC communications layer and configured to perform service operation based on the received data. The first CPU may be connected to a memory in which data to be transmitted to the second CPU is stored at a predetermined location, and the second CPU may receive the data stored in the predetermined location of the memory by a direct memory access (DMA) scheme.

Abstract: In some embodiments, a method of automatically setting a protocol is performed in a protocol automatic setting server communicating with a client in a Programmable Logic Controller (PLC) system. The method can include receiving a request frame from a client; analyzing a protocol of the request frame based on a protocol stack and determining a response frame corresponding to the request frame according to an analysis result; and transmitting the response frame to the client. The server can automatically analyze a request frame from the client based on the protocol stack, and thus conventional protocol presetting can be eliminated.

Abstract: Provided is a PLC network extension system, the system including a basic base generating a control data for controlling a plurality of extension bases, generating a network frame using the control data, and transmitting the network frame to one extension base in the plurality of extension bases via a network cable, and the plurality of extension bases extracting a control data from the received network frame to control a pre-installed module based on the control data.

Abstract: The present invention connects a ring topology Ethernet network to other networks of various shapes. To that end, a first ring topology network configured in a ring shape has three or more expandable nodes (each have three or more Ethernet ports), and is connected to other networks through Ethernet ports that are not used for the formation of the first ring topology network among Ethernet ports of the expandable node. Thus, it is possible to add equipment without changing a ring topology network previously built and it is possible to integrate and manage networks of various shapes into a single network.

Abstract: The present invention connects a ring topology Ethernet network to other networks of various shapes. To that end, a first ring topology network configured in a ring shape has three or more expandable nodes (each have three or more Ethernet ports), and is connected to other networks through Ethernet ports that are not used for the formation of the first ring topology network among Ethernet ports of the expandable node. Thus, it is possible to add equipment without changing a ring topology network previously built and it is possible to integrate and manage networks of various shapes into a single network.

Abstract: Provided is a PLC network extension system, the system including a basic base generating a control data for controlling a plurality of extension bases, generating a network frame using the control data, and transmitting the network frame to one extension base in the plurality of extension bases via a network cable, and the plurality of extension bases extracting a control data from the received network frame to control a pre-installed module based on the control data.