A method includes receiving a first event request message from a client device. The method also includes retrieving one or more first events that have most recently occurred since a previous event request and that have not already been provided to the client device, up to a first event paging size and a first event history age limit. The method further includes determining that one or more second events are within the first event history age limit and have not already been provided to the client device but are in excess of the first event paging size. The method also includes populating a page-state string to indicate the one or more second events. The method further includes generating a first response message including the one or more first events and the page-state string. In addition, the method includes sending the first response message to the client device.

A system and a method of operating an automated guided vehicle includes: an Automated Guided Vehicle (AGV) which is loaded with a component and transfers the component along a set travelling path in a vehicle production factory; a Programmable Logic Controller (PLC) which is provided in a process line and each of a plurality of nodes existing on the travelling path and controls a peripheal automation facility; and an operation server which is configured to control an operation of the AGV and each automation facility through the PLC, and sets a PLC control condition for controlling each automation facility for each section by collecting PLC memory data from the PLC and inquiring the PLC memory data based on a movement position of the AGV when the travelling path is set.

Provided is a technology with which it is possible to access a function unit to be accessed without ascertaining an IP address of the function unit. Provided is a unit comprising: a communication unit for relaying a communication between an external device connected to a first network and another unit connected to a second network; a setting unit for acquiring address information of the other unit in the second network from the other unit and generating setting information in which the address information is associated with an identifier which substitutes for the address information; and a link information generation unit for generating, on the basis of the identifier, link information used to access information on the other unit from the external device.

An adaptive process control system and corresponding method for independent steering of plant control systems is provided, wherein a plant associated with the plant control system includes a plurality of interlocked elements of one or more operational unit of the plant. The operation of an operational unit is controlled by the plant control system by means of the elements interlocked to the plant control system, wherein the adaptive, independent process control system is accessible by a plant process engine including a plant controller unit connected via the supervisory control and data acquisition unit with at least one programmable logic controller of the plant control system. The operation of the plant and the operational units is controlled by means of the programmable logic controller and the plurality of interlocked elements.

A method for process controlling of plants and plant control systems in an OPC UA based Machine-to-Machine (M2M) network is provided. A plant associated with the plant control system a plurality of interlocked elements of one or more operational units of the plant. The operation of an operational unit is controlled by the plant control system using the elements interlocked to the plant control system. The plant control system is accessible by an independent process control system in the Machine-to-Machine (M2M) network via one or more network interfaces, and wherein messages containing signaling data and steering commands are transmitted between the process control system and the plant control system.

A method includes receiving a first event request message from a client device. The method also includes retrieving one or more first events that have most recently occurred since a previous event request and that have not already been provided to the client device, up to a first event paging size and a first event history age limit. The method further includes determining that one or more second events are within the first event history age limit and have not already been provided to the client device but are in excess of the first event paging size. The method also includes populating a page-state string to indicate the one or more second events. The method further includes generating a first response message including the one or more first events and the page-state string. In addition, the method includes sending the first response message to the client device.

A method may include connecting a network device to a control zone of a drilling management network. The control zone may include a control system that includes a programmable logic controller that performs drilling operations. The method may further include validating that the network device is authorized to communicate with a destination device in the control zone. The method may further include reconfiguring, in response to validating the network device, the control zone to enable the network device to communicate with the destination device. The method may further include obtaining a packet from the network device. The method may further include transmitting, in response to reconfiguring the control zone, the packet to the network device.

An adaptive process control system and corresponding method for independent steering of plant control systems is provided, wherein a plant associated with the plant control system includes a plurality of interlocked elements of one or more operational unit of the plant. The operation of an operational unit is controlled by the plant control system by means of the elements interlocked to the plant control system, wherein the adaptive, independent process control system is accessible by a plant process engine including a plant controller unit connected via the supervisory control and data acquisition unit with at least one programmable logic controller of the plant control system. The operation of the plant and the operational units is controlled by means of the programmable logic controller and the plurality of interlocked elements.

A system and a method of operating an automated guided vehicle includes: an Automated Guided Vehicle (AGV) which is loaded with a component and transfers the component along a set travelling path in a vehicle production factory; a Programmable Logic Controller (PLC) which is provided in a process line and each of a plurality of nodes existing on the travelling path and controls a peripheral automation facility; and an operation server which is configured to control an operation of the AGV and each automation facility through the PLC, and sets a PLC control condition for controlling each automation facility for each section by collecting PLC memory data from the PLC and inquiring the PLC memory data based on a movement position of the AGV when the travelling path is set.

An adaptive process control system and corresponding method for independent steering of plant control systems is provided, wherein a plant associated with the plant control system includes a plurality of interlocked elements of one or more operational unit of the plant. The operation of an operational unit is controlled by the plant control system by means of the elements interlocked to the plant control system, wherein the adaptive, independent process control system is accessible by a plant process engine including a plant controller unit connected via the supervisory control and data acquisition unit with at least one programmable logic controller of the plant control system. The operation of the plant and the operational units is controlled by means of the programmable logic controller and the plurality of interlocked elements.