Abstract:
The present invention is directed to a method of reprogramming a field device in a process control network using the standard communications protocol for the network, and a reprogrammable field device in the process control network adapted for being reprogrammed using the standard communications protocol for the network. The method and device of the present invention use the standard communications protocol to transmit the downloaded code to the field device and store the downloaded code in the field device while the device is enabled to perform process control. Once the new code is downloaded and stored in the field device, the field device is set to a steady state condition and/or disabled from performing process control, reprogrammed to execute the downloaded code, and reenabled to perform process control.
Abstract:
A method and system are disclosed for managing Profibus device information in a distributed control system. After receiving input parameter data originating from a Profibus device message, the I/O module assembly performs steps for processing, maintaining and providing the input parameter data to a requesting control processor. The processing step includes extracting input parameter values from a received Profibus device message. The extracted input parameters are then deposited in a repository on the I/O module assembly, such that for a primary input parameter, the I/O module assembly stores at least: (1) a measured value, and (2) a status value. Furthermore, the I/O module assembly maintains a reference linking the first status parameter to the first input parameter. The I/O module assembly provides a data status value with the measured value for the first input parameter in accordance with an I/O read operation. The data status value is based on the status value for the first status parameter.
Abstract:
A tool changer includes a tool attachment mechanism and a changer electronics module. The changer electronics module implements a tool changer node on a device network for the tool changer and a tool plate node on the device network for a tool plate of an automated tool that may be latched to the tool changer.
Abstract:
The invention relates to a microprocessor-controlled standard field device (3null, 4null, 5null, 6null), such as a measuring sensor or an actuator, for connecting to a field bus system (1) that, in turn, is connected to, for example, a freely programmable controller (2null). According to the invention, the field device (3null, 4null, 5null, 6null) is equipped with a security layer (10) for carrying out a security proven communication. A secure and simultaneously cost-effective communication with a control device (2) via a field bus system (1) is made possible by implementing a security layer (10) in a conventional operationally proven or redundant standard field device (3, 4, 5, 6).
Abstract:
A process control system includes a controller that executes a control routine which performs a series of unit procedures within a process. The control routine is written or created to specify the class of unit to be used for each unit procedure, but not the actual unit itself. At the start of each unit procedure of the control routine, a dynamic unit selection routine selects a particular unit as the unit to be used during operation of that unit procedure. When called, the dynamic unit selection routine determines a set of possible units to be used, determines if each of the set of possible units is suitable for use during that unit procedure of the control routine based on a suitability criterion, prioritizes the units that meet the suitability criterion based on a priority criterion and selects the particular unit from the prioritized list of suitable units in order of priority. The dynamic unit selection routine may determine if one or more of the units on the prioritized list of suitable units is capable of being acquired and may select the first unit on the prioritized list of suitable units that is capable of being acquired as the unit to be used by the control routine.
Abstract:
An interface module is operatively connected to a Fieldbus process control network and to at least one non-Fieldbus process control network to facilitate the exchange of process control information between the networks. The interface module stores a database in which the process control parameters of the function blocks in the field devices of the Fieldbus process control network are mapped to corresponding process control parameters of the non-Fieldbus process control network. Once the Fieldbus process control parameters are mapped to the non-Fieldbus process control parameters, the interface module is adapted to transmit request messages on the Fieldbus process control network to the Fieldbus field devices for the current values of the process control parameters, receive response messages from the Fieldbus field devices, and store the current values of the process control parameters in the database. The interface module may also function in the other direction to map non-Fieldbus process control parameters to corresponding Fieldbus process control parameters.
Abstract:
An automation system as well as a method for programming a data communication for an automation system are described. Components are stations participating in the data communication. Sub-components can be associated with the components. A data message of the data communication includes data locations which can be freely associated with a sub-component. Data messages are generated automatically if the configuration of the automation system and the associated structure of the data communication are known.
Abstract:
The present invention is directed to a method of reprogramming a field device in a process control network using the standard communications protocol for the network, and a reprogrammable field device in the process control network adapted for being reprogrammed using the standard communications protocol for the network. The method and device of the present invention use the standard communications protocol to transmit the downloaded code to the field device and store the downloaded code in the field device while the device is enabled to perform process control. Once the new code is downloaded and stored in the field device, the field device is set to a steady state condition and/or disabled from performing process control, reprogrammed to execute the downloaded code, and reenabled to perform process control.
Abstract:
An interface module is operatively connected to a Fieldbus process control network and to at least one non-Fieldbus process control network to facilitate the exchange of process control information between the networks. The interface module stores a database in which the process control parameters of the function blocks in the field devices of the Fieldbus process control network are mapped to corresponding process control parameters of the non-Fieldbus process control network. Once the Fieldbus process control parameters are mapped to the non-Fieldbus process control parameters, the interface module is adapted to transmit request messages on the Fieldbus process control network to the Fieldbus field devices for the current values of the process control parameters, receive response messages from the Fieldbus field devices, and store the current values of the process control parameters in the database. The interface module may also function in the other direction to map non-Fieldbus process control parameters to corresponding Fieldbus process control parameters.
Abstract:
A system having a processor-based process control system for a plastic injection molding machine performing a plastic injection molding process having an I/O bus network containing a plurality of I/O modules operably connected to a corresponding I/O device associated with the plastic injection molding machine and a first computer having and I/O bus controller directly connected to the I/O bus network, a real-time operating system, and a first processor executing a plastic injection molding control program for controlling the plastic injection molding process.