JPH0764614A - Program control device and method and program producing device - Google Patents

Abstract

PURPOSE:To automatically correct the operating plan stored in the corresponding program producing device when the load module of a plant controller is directly corrected by an exclusive tool with regard to a program control device which contains a program producing device and a program controller. CONSTITUTION:A program control device contains a plant controller 1 and a program producing device 6 which are connected to each other via a network 13. The controller 1 is provided with a changed information transmitting part 5 to send the contents of an execution program corrected by an exclusive tool 11 to the device 6. The device 6 is provided with an inverse conversion mechanism 10 to correct the operating plan stored in a module stacker 7 beased on the correction information received from the controller 1. In such a constitution, the correction of an orginal module is omitted when a load module is directly corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program management device and method for a plant controller and a program creating device for controlling the plant in the field of plant control.

[0002]

2. Description of the Related Art In a conventional plant control system,
Before the load module was automatically generated from the operation plan document representing the plant control specifications by the program creation device, the plant control program was created and loaded by a dedicated tool corresponding to the plant controller. Even during the trial run and adjustments performed before the plant was constructed and put into operation, the load module was displayed in the form of a ladder diagram, etc. by a dedicated tool directly connected to this plant controller, and the program was modified using this tool. .

Since a load module is automatically created from a program creating apparatus, a dedicated tool is no longer needed when creating a program. But,
Various program modifications frequently occur during the adjustment period, and quick modifications are required. For example, during the commissioning period, all conditions are not established (because construction is in progress), and although the program is correct, it is often the case that you want to move the machine out of the conditions. In this case, it is not impossible to modify the module on the program creation device side, convert it into a load module, download it, and operate the machine. However, in reality, such conditions are often understood only by moving the actual ones, and it is necessary to quickly correct them on the spot. Therefore, in the trial run stage, a dedicated tool is directly connected to directly change the load module.

Therefore, during the trial run, every time the trial run is completed every day, the changes directly made to the load module on that day must be input to the program creating device to recreate the load module and download again. It was Also, because the load module is changed directly, CR
There was a situation where the information on the driving plan monitored by T and the actual logic did not match.

As a technique related to the above-mentioned conventional technique, for example, there is a technique described in Japanese Patent Laid-Open No. 2-277126.

[0006]

The problem that arises when the program created from the operation plan by the program creating device is actually applied to the plant and operated is the problem of adjustment.

That is, by the time the plant is put into actual operation, it is necessary to perform a test operation and actually move the controlled object to perform a test. At this stage, the program is frequently modified. For example, a change to the problem that surfaced for the first time after actually operating, or a necessary condition signal that is not in a normal state during construction, so a change to forcibly establish the condition or a small program error There are various modifications. And in most cases, the program must be quickly modified and dealt with at that point. It is also possible to make this change on the operation plan document of the program creation device, to regenerate the load module by the program creation function, and to correct it by downloading, but this is not practical because of the following problems.

1. Time problem for changing logic Since the program creation device generates a load module from the driving plan document, it takes time to process the document and convert it into machine language, and while actually performing line operation during adjustment. It's not realistic when it comes to making adjustments.

3. Problem of Restart for Program Modification When a download is performed each time the program is modified, the plant controller must be started from the initial in order to download (ie, replace the load module in the plant controller). If you restart, the program will be restarted from the beginning, and the information up to that point will be reset. If you're commissioning equipment that moves sequentially, you'll have to start over again. However, if it is a dedicated tool, it is possible to temporarily stop the program, modify the program, and restart the program from the place where it stopped.

From the above points, the program modification by the dedicated tool is indispensable for the trial operation.

However, when the load module created by the program creating apparatus is directly modified by the dedicated tool, the following problems occur. The operation plan is input to the program creation device in the form of modules organized by function, but at the time of program creation, the relationship between modules and load modules (that is, which module is located at which address on the load module) Information) is recognized on the programming device, but when the load module is changed directly, this information collapses and it is not possible to recognize which module is located at which address and the load module is checked and the original module is corrected. Difficult to do.

An object of the present invention is to provide a program management device and method for facilitating a program modification work by automatically reflecting a modification made to a load module directly by a dedicated tool on a plant controller side in an operation plan. Providing a program creation device.

[0013]

[Means for Solving the Problems] The above-described object is to have a function of transmitting contents corrected by a plant controller using a dedicated tool to a program creating device one by one, and an operation plan based on load module modification information in the program creating device. This can be achieved by allowing the load module to have the function of making corrections and enabling the reverse conversion from the load module to the driving plan.

[0014]

The dedicated tool uses the function of the control program of the plant controller to rewrite the load module such as changing, inserting and deleting commands. The change information transmission unit of the plant controller transmits a program correction command (information about which command word at which address was changed, added, or deleted) input by the dedicated tool to the program creation device through the network. The program creation device receives the load module change information from the plant controller, and determines the changed module name from the information when editing the program (information indicating which module is located at which address). Then, the drawing information of the module is converted into the load module, and it is determined which part of which page is changed by using the information. In the case of change or addition, the signal name of the work memory included in the change information is searched for by using the information indicating which device is assigned to which address. Similarly, the drawing symbol corresponding to the command word is determined from the change information.

On the basis of the above information (information on which position (page, coordinate) of which module, what command, what signal name the target work memory is), the normal module is set on the program creating device. Make the same changes as you would in the editor.

Finally, the edit operation of the corresponding module is automatically performed to update the mode module.

As described above, the result corrected by the dedicated tool can be automatically reflected in the driving plan.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a program management apparatus which is an embodiment of the present invention.

Reference numeral 1 is a plant controller, which actually controls the plant by inputting and outputting it. The plant controller is connected to a network, and via this network, a load module created by a program creating device described later is sent to the plant controller and executed (this is called download). Reference numeral 2 denotes a program memory inside the plant controller, and a load module, which is a program main body for controlling the plant, is written here and executed. Three
The data memory stores the calculation results. Reference numeral 4 is a management program for managing the entire plant controller. (1) Upon download, the load module from the program creation device is received and written in the program memory, and (2) according to the load module change, addition, or deletion instruction from the dedicated tool. Performs the process of rewriting the load module. Reference numeral 5 denotes a change information transmission unit, from which program correction information by a dedicated tool is transmitted to the program creation device 6.

The program creation device 6 has a function of analyzing the input operation plan document and automatically generating a load module of the plant controller. The driving plan is stored in the module stacker 7 in the form of a module and converted into the load module 9 by the conversion function 8. The contents will be described later. An inverse conversion unit 10 corrects the module in the module stacker from the correction information of the load module sent from the plant controller. The program creation device is connected to the network and can send and receive data to and from the outside.

Reference numeral 11 is a dedicated tool, which is directly connected to the plant controller through its own interface, so that the load module can be changed, displayed, and monitored in the form of a ladder diagram or the like. You can operate the load module directly,
Suitable for making small modifications on the fly. In addition, you can control the execution of the load module, stop the execution once,
After modifying the program, you can also re-execute it from the point where it stopped (downloading rewrites the entire program, so you cannot do this).

Reference numeral 12 is a CRT display which actually displays a screen. It is possible to display and monitor the driving plan created by the program creating device on the CRT.

Reference numeral 13 is a transmission line for linking the CRT, the plant controller, and the program creating device in the network. Actually, it is used for (1) downloading (sending the load module from the program creating device to the plant controller) and (2) transmitting the load module change information in the dedicated tool to the program creating device.

FIG. 2 shows details of the program creating device 6. The operating plan is composed of units called modules 14, and the program creation device has a module stacker 7 for each plant controller, and a module group for realizing the control program is stored therein. The module group is converted by the compiler 15 from the picture information of the driving plan into the instruction words of the assembler. Information on conversion information (which page, which part of the module, which symbol is assigned to which address of the load module) at this time is stored in the apparatus as edit information called compilation information 16. Further, memory allocation information 17 indicating which address on the data memory the signal name used in the driving plan is allocated is also created. Next, it is converted into the load module 9 to which the real address is assigned by the edit 18. At this time, information (address on the program memory) indicating which module is arranged in which part of the load module is prepared for each module, and MAP information 19 is created. This load module is downloaded from the program creating device to the plant controller.

Reference numeral 20 denotes a CRT monitor information creation process, which creates CRT monitor information 21 from the module in order to display and monitor the driving plan on the CRT during editing.

The editing process in the program creating apparatus and each information created as a result will be described with reference to FIGS.

The driving plan is managed in units of modules 14 for each function, and each has a name and an abbreviation. Each module consists of multiple pages. Figure 3
In the example of a certain module, the module names are “speed command pattern creation” and “abbreviated name SPREF”, and represent a part of the module. One page of the driving plan is further managed by a matrix of vertical and horizontal, x-coordinate and y-coordinate.
In the example, there is a signal at coordinates x = 4, y = 3, and coordinates x =
5, when y = 3, it means that the signal name "SPREF" is added to the content of the memory "speed pattern". Each individual module is represented in this way.

Returning to FIG. 2, such a module 14 for each plant controller is stored in the stacker 7, and a load module for each module is created by analyzing and compiling this module for each coordinate. In this process, the picture information of the driving plan is converted into assembler command words, and the conversion information is stored in the device as compilation information.

FIG. 4 shows an example of compile information. The part explained in FIG. 3 is a relative address 50 from the head of the module, ADD is an instruction word converted to assembler, work memory is SPREF, and the page of the module. Is 1, and the values in parentheses are the coordinates within the page.

Memory allocation information indicating to which address on the data work memory the signal name used in the driving scheme is allocated is also created.

FIG. 5 shows a part of the memory allocation information. The beginning shows that the signal name "SPREF" is assigned to address 1560 on the data memory and the name is "speed pattern". .

Next, an edit operation is performed to convert the load module into a load module to which a real address is assigned. At this time, which module is allocated to which part of the load module in the module unit (address in program memory)
MAP information, which is information indicating whether or not it has been performed, is created.

FIG. 6 shows an example of MAP information, which is a module SPR.
Indicates that EF was assigned to program memory address 6200.

This load module is downloaded from the program creating device to the plant controller.
Further, since the monitor file is created from the module at the time of conversion, the corrected driving plan can be displayed on the CRT and monitored.

The flow of processing and data is as follows.

(1) Program modification by a dedicated tool A command for changing the load module is sent from the dedicated tool to the plant controller.

The control program of the plant controller checks the state of the plant controller and, if the rewriting condition is satisfied, rewrites the load module and returns the result to the dedicated tool.

The change in the dedicated controller is carried out in the minimum unit. For example, "the processing contents are changed, the instruction for adding the contents of the data memory 1560 at the program memory 6250 is changed to the process of subtracting the contents of the data memory 1578. It is performed in the form of "do".

(2) The conversion information transmitting unit of the plant controller transmits the load module change result to the program creating device.

(3) The program creation device receives this information and first determines which module is to be modified from its address. In this case, since the address is address 6250, the MAP information of FIG. 6 is searched and the change is executed for the module SPREF, which is the change for the command word at the position of 50 bytes from the head of the module. Recognize things.

(4) Next, in the inverse conversion process, the compile information of FIG. 4 is used to search for a changed portion in the module, and the number of pages in the module, the x coordinate, and the y coordinate are determined.
If this is the case, look at the first 50 bytes from the compilation information of the module SPREF and find page 1, x coordinate
Find that the 5, y coordinate is 3.

(5) Next, the data memory address of the change information is checked, and the memory allocation file is checked to determine the signal name. In the example, 1580 is "INVSPFB".
And find that it is "inverter speed feedback". If this address is a memory that is not used at all, the address is newly registered in the memory allocation file and a temporary name such as SPRE
Register under the name FWK1.

(6) Next, the module is called to rewrite the symbol of the relevant page and the relevant coordinates. This completes the module modification.

In the example, as shown in FIG. 7, SPEEDREF
The part where was added is changed to a picture in which INVSPFB is subtracted.

(7) Next, the driving plan was revised, so C
The RT monitor information file is changed so that when this module is monitored by a CRT, the contents rewritten by the load module directly with a dedicated tool are reflected.

(8) Finally, the inverse conversion process performs the editing operation on the changed module to keep the load module in the latest state.

A simple case has been shown above for the sake of simplicity. However, if this is an instruction such as integration or first-order lag (indicated by a single symbol on the module, it is converted to a load module). If you do this, it will take dozens of steps
Determines that it is one process consisting of a plurality of instructions. In this case, the module is changed with the range as a symbol of user-defined processing. For example, the first-order delay is used, but if it is not accurate enough and 2w calculation is required internally and the processing content is changed by a dedicated tool, the plant controller transmits a plurality of pieces of change information. The inverse conversion process cannot determine what the changed process is. Therefore, the symbol is changed by using the processing as a user-defined function (FIG. 8). In such a case, the person who changed the "user-defined function 1" to "high-precision first-order delay"
It is necessary to change the name to something like this later. Alternatively, in another example, the processing content is expressed in the form of expanded logic. That is, since processing such as integration and first-order lag can be expressed by four arithmetic operations, they can also be expressed by using four arithmetic operations.

When a load module is created by the program creation device An operation plan document is created by the program creation device (input using a dedicated editor). Since the conversion is performed through the multiple processes as described above, it requires a lot of processing. Further, in the program creating apparatus, modules are managed as a unit, so that even if the logic is changed at one place, such a path must be taken for the whole module.

At the actual site of adjustment, the problem is how quickly and surely the adjustment is performed and the plant is started in a short period of time. Especially in the case of replacement remodeling of the old plant, how to shorten the line stop period and start up the production line is an important factor, and the program creation can be executed with sufficient time before the stop period. On the other hand, the trial run must be executed within a limited time and by moving the actual hardware. Therefore, how efficiently this test run is more important than program creation. By the means described above, even when the load module is changed using the dedicated tool, the original module is always corrected and the consistency as a whole is maintained, and it is not necessary to re-correct the module later.

[0051]

According to the present invention, when the load module is directly corrected, the original module and the monitor information are automatically corrected, so that the module need not be corrected, and the load module and the operation plan document are not required. The integrity of is always maintained.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of processing contents of the program creation device.

FIG. 3 is an explanatory diagram of a module.

FIG. 4 is an explanatory diagram of compilation information.

FIG. 5 is an explanatory diagram of memory allocation information.

FIG. 6 is an explanatory diagram of MAP information.

FIG. 7 shows an example of inverse transformation.

FIG. 8 shows another example of inverse transformation.

[Explanation of symbols]

 1 Plant Controller 2 Program Memory 3 Data Memory 4 Management Program 5 Conversion Information Transmission Unit 6 Program Creation Device 7 Module Stacker 8 Conversion Mechanism 9 Load Module 10 Inverse Conversion Mechanism 11 Dedicated Tool 12 Operating Plan Monitor CRT 13 Network 14 Module 15 Compiler 16 Compile information 17 Memory allocation information 18 Editing process 19 MAP information 20 Monitor information creating process 21 Monitor information

Claims (4)

[Claims] 1. A module stacker for storing a driving plan, a mechanism for converting the module into a load module, a program creating device for storing the output load module, a program memory for storing the load module, and a data memory as a whole. In a program management device that has a plant controller that has a management program that manages, a dedicated tool that directly operates the execution program (load module) of the plant controller, and a network that transfers data between each device, the plant controller is a dedicated A program management device comprising means for transmitting correction information by a tool to a program creation device, and the program creation device comprising an inverse conversion mechanism for modifying a driving plan based on the correction information. 2. A module stacker for storing a driving plan, a mechanism for converting the same into a load module, a program creating device for storing a load module as its output, a program memory for storing the load module and a data memory as a whole. A program having a plant controller having a management program for managing the above, a dedicated tool for directly operating the execution program (load module) of the plant controller, a CRT for operating plan monitoring, and a network for exchanging data between devices In the management device, the plant controller includes means for transmitting modification information by a dedicated tool to the program creation device, and the program creation device modifies the operation plan stored in the module stacker based on the modification information. A conversion mechanism, the program management apparatus, characterized in that the operating scheme stored in the module stacker comprising means for displaying on the CRT. 3. A program creating apparatus, which stores a module stacker for storing a driving plan, a mechanism for converting the module into a load module, and a load module as an output thereof, which is connected to the program creating apparatus via a network. A program creation device comprising an inverse conversion mechanism for modifying an operation plan based on modification information of an execution program of the plant controller transmitted from the plant controller. 4. A program managing method in a plant controller connected to the program creating apparatus and the program creating apparatus via a network, wherein the plant hardware is operated, and the plant controller is executed based on an operating state at that time. The program corresponding to the modification contents is corrected by the inverse conversion mechanism that directly modifies the program, sends the modification information to the program creation device, and modifies the operation plan stored in the program creation device based on the sent modification information. A program management method characterized by modifying a plan.