摘要:
The function block memory unit stores a plurality of function blocks by programming each ladder circuit for computing output signals which has to be determined based on input signals from each safety device according to a connection specification of the safety device. The ladder circuit satisfies a predetermined safety standard, and thus, the function blocks satisfying the safety standard are used. The program link unit sequentially links each function block received from the function block memory unit based on the ID number of each I/O module to automatically create the safety program. The corresponding function block can be uniquely determined based on the ID number.
摘要:
To provide a sequence-program-component creation program that causes a computer to perform a searching step of searching an overall circuit of a sequence program for a common logic part and extracting a logic pattern that appears in common in a circuit pattern arranged in the common logic part as a common circuit pattern, a component-candidate displaying step of displaying an extracted common circuit pattern as a candidate for a program component, a component registration setting step of registering a common circuit pattern selected by a user from candidates for the program component, and a replacing step of replacing the common logic part of the sequence program with the program component.
摘要:
Methods and architectures are described that provide function block mobility between PLCs. Each PLC configured with Mobile Function Blocks (MFBs) may forward and execute MFBs from each other. To enable MFB mobility over a communication bus, each PLC having one or more configured MFBs requires a Communication Function Block (CFB) and an MFB directory data block. Each PLC maintains an MFB directory data block to store its MFB directory which is used when other PLCs send requests to check the availability of MFBs they need to run new tasks.
摘要:
The PLC according to this invention includes I/O modules, a CPU module, an input/output bus, and a PC having a display. The CPU module includes a control program storage unit which previously stores an intrinsic control program in which operation processing and an input/output information item are packaged; a library which previously stores the function block representing the operation processing; and a header file which previously stores equivalent input/output information equivalently representing the input/output information by a graphical language. Referring to the library and header file, PC causes the execution program created and stored in the main storage unit to be displayed on the display by the function block and equivalent input/output information item.
摘要:
Methods and architectures are described that provide function block mobility between PLCs. Each PLC configured with Mobile Function Blocks (MFBs) may forward and execute MFBs from each other. To enable MFB mobility over a communication bus, each PLC having one or more configured MFBs requires a Communication Function Block (CFB) and an MFB directory data block. Each PLC maintains an MFB directory data block to store its MFB directory which is used when other PLCs send requests to check the availability of MFBs they need to run new tasks.
摘要:
The function block memory unit stores a plurality of function blocks by programming each ladder circuit for computing output signals which has to be determined based on input signals from each safety device according to a connection specification of the safety device. The ladder circuit satisfies a predetermined safety standard, and thus, the function blocks satisfying the safety standard are used. The program link unit sequentially links each function block received from the function block memory unit based on the ID number of each I/O module to automatically create the safety program. The corresponding function block can be uniquely determined based on the ID number.
摘要:
To provide a sequence-program-component creation program that causes a computer to perform a searching step of searching an overall circuit of a sequence program for a common logic part and extracting a logic pattern that appears in common in a circuit pattern arranged in the common logic part as a common circuit pattern, a component-candidate displaying step of displaying an extracted common circuit pattern as a candidate for a program component, a component registration setting step of registering a common circuit pattern selected by a user from candidates for the program component, and a replacing step of replacing the common logic part of the sequence program with the program component.
摘要:
The PLC according to this invention includes I/O modules, a CPU module, an input/output bus, and a PC having a display. The CPU module includes a control program storage unit which previously stores an intrinsic control program in which operation processing and an input/output information item are packaged; a library which previously stores the function block representing the operation processing; and a header file which previously stores equivalent input/output information equivalently representing the input/output information by a graphical language. Referring to the library and header file, PC causes the execution program created and stored in the main storage unit to be displayed on the display by the function block and equivalent input/output information item.
摘要:
In a method for controlling mechanisms or technical systems, the mechanisms or technical systems to be controlled are stored in a controller with their states, and with associated signal formers of sensors and actuators, whereby starting from a defined reference state at the onset of the activation of the controller, the actual states signaled by the technical system via the sensors are continuously compared with the specified state, the specified state being stored in the controller, and, based on this comparison, every deviation from the specified state is identified in the technical system, and, when initiated, a new instruction that changes the state of the mechanisms or of the technical system updates the specified state for the comparison and monitors the time till the acknowledgment of the new state, and sensor signals and comparable information exclusively serve the state identification of elementary functions and state changes exclusively ensue upon the initiation of elementary instructions.
摘要:
The invention relates to a method for the control of mechanisms and technical systems characterized by that a) the mechanisms or technical systems to be controlled in their elementary functions (8) with their states defined according to the instructions and the appropriate signal representations of the sensors (13) and actuators (12) are stored in a control, whereby starting from a reference state (18) at the start of the control activation a continuous comparison is made of the actual states transmitted by the technical device through the sensors (13) with the desired states (24) stored in the control for all elementary functions and therefore any deviation in the system to be controlled from the desired state (24) according to the instructions is detected, b) a new instruction that changes the state of the mechanisms or the technical system updates when started the desired state (24) for making the comparison and monitors the time period until signalization of the new state defined by that instruction on the base of also stored permissible transition times, c) whereby sensor signals and comparable information exclusively serve for the identification of the state of elementary functions (8), state changes take place exclusively through the start of elementary instructions (16) to which the sensor and actuator signals as desired state are assigned, and that the application instructions (32) freely defined on a logical-functional language level are defined by appropriate assignment of elementary instructions (16). A device for carrying out the method and a method to produce the control software are described.