JP4474631B2 - Monitoring system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a monitoring system that monitors various operation data of a control target device via a programmable controller (target system) that controls the operation of the control target device.
[0002]
[Prior art]
There is a monitoring system that realizes a plurality of monitoring devices on a multitasking OS, communicates with a target system (programmable controller), and can monitor a lot of operation data related to a control target device controlled by a program controller ( For example, Unexamined-Japanese-Patent No. 11-327612 etc.).
[0003]
[Problems to be solved by the invention]
However, in such a conventional monitor device, each monitor device (monitor program) has been developed or changed for each device to be controlled. Since development or modification of this program was performed from the source of each monitor program, much effort was required for development and modification, such as recompiling the program after modification and modification and verifying the operation. An object of the present invention is to provide a monitoring system that can easily modify and develop a plurality of monitor programs and can display a large amount of monitoring information.
Next, in the conventional monitor program, a plurality of operations are described in a sequence expression, and in order to realize the monitor operation, even if processing from the beginning to the end of the program does not stop there, the processing from the beginning is repeated again. As described above, once the program is started, the program is continuously scanned and monitored. Therefore, when a plurality of monitor programs are operated on the multitask OS as in the prior art, the plurality of monitor programs are described above. In order to process such periodic scans in parallel, there is also a problem that such a monitoring system cannot be adopted due to insufficient processing capability unless the computer system has a high processing capability. The present invention is to construct a monitoring system that can be employed even in a computer system having a high processing capability by operating the plurality of monitoring programs only when necessary.
Furthermore, another subject of this invention is providing the monitoring system which can designate the display system at the time of displaying using the referred data. Still another object of the present invention is to provide the monitoring system that can change the data access target for the monitoring operation more easily.
[0004]
[Means for Solving the Problems]
  The monitoring system of the present application operates on a multitasking OS in a monitoring system in which a plurality of monitoring means are operated on a multitasking OS and data is exchanged with the target system for screen display., DynamicPerforms display and operation according to the display and operation content data given by the operation tableOne that can be activated multiple timesA monitor operation execution means, and a plurality of the operation tables describing the display and operation content data applied to the monitor operation execution means,The operation table includes a logic table in which a plurality of operations of the monitoring unit realized by the monitoring operation execution unit are described in a sequence expression, a function table in which display and operation content data are described with reference to the logic table, and a function It consists of an object table that is referred to by the table and has access target information for data used for the monitor operation. The logic table includes an initialization unit, a main processing unit, and a macro description unit in order from the beginning. The event condition is defined in advance so that the monitoring operation based on the operation table is executed only when a predetermined event occurs, and the main processing unit uses the event notification as a determination condition to receive the event notification. Each process is described in text following the condition identifier. All operations performed by the tool information display means are sequentially described in a sequence expression, and the macro description part describes common processes that are used in common in each process of the main processing part. In the middle, the common process of the macro description part is called, and the monitor operation execution means is composed of a logic processing part and a function table processing part, and the logic processing part receives an event notified from the OS. Event checking means for determining whether the monitoring means is valid, execution starting means for starting execution of the main processing section if it is valid, and a plurality of processes described in the main processing section in a sequence expression An execution means for performing processing from the beginning and an end determination means for finishing the execution of the main processing section are provided, and the main processing section is rotated once from the beginning to the end. Exit After the minute processing,A plurality of monitoring means can be configured by displaying the plurality of operation tables and the operation content data is operated in a multiplexed manner, and a plurality of monitoring means can be configured, and communication means for exchanging data between these monitoring means and the target system It is characterized by being connected with.
[0005]
According to this, since the monitor operation execution means becomes a monitor means for executing the monitor operation according to the series of display described in the operation table and the operation content data by applying the operation table, the operation table display, By changing or editing the operation content data, new monitoring means (monitor program) can be obtained without development or modification from the program source, and the development and modification of multiple monitor programs is extremely difficult. It becomes simple. In addition, a plurality of different monitoring means are realized by applying a plurality of different operation tables to one monitoring operation execution means that operates on the multitasking OS and can be activated in a multiple manner. A large amount of monitor information collected can be displayed. As the multitasking OS, it is desirable to adopt WINDOWS (registered trademark), which is widely spread.
[0006]
  AlsoWhen a monitor operation is described in a sequence expression in the logic table, a specific event (an event from the OS may be used as compared with a case where the scan is always repeated without stopping from the beginning to the end of the sequence, (It may be an event from a specific program.) After only one scan is executed, the event notification is waited for again, so that unnecessary processing is not repeated, so even in a computer system with low processing capacity, A monitoring system can be adopted.
[0007]
  Use the reference drawing function described in the function table to display the screen with reference to the object table, and use or process the data specified in the referenced object table to change the display method on the screen. It can be specified in various ways,The function table processing unitIncludes display control means for interpreting the display method and performing display control according to the interpretation.In the object table, the data access target information is indirectly described, and the indirect description data is separately specified outside the object table, whereby the data access target specified in the object table is variable.ing. According to this, the attribute of the data is converted from a numerical value to a character string and displayed, or the numerical value is converted into a graphic display (for example, a bar graph) or displayed. It is possible to control the output of various status data to the screen, such as controlling the display or non-display of data, or displaying the data as another graphic.
[0008]
  Also, SpecialWhen using a large number of object tables in which the specified access target is fixed, if you want to apply an access target different from the access target to those object tables, it is necessary to modify the many object tables themselves. In contrast, when the access target is described indirectly, only the indirectly described data described indirectly needs to be changed separately, so that there is no need to modify or change the object table itself.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example will be described in which the present invention is applied to a transfer processing line in which various machine tools such as a machining center are lined up and processed while conveying a workpiece. The monitoring system of the present application is installed and used in a personal computer PC, operates on a multitasking OS such as WINDOWS (registered trademark), and has one monitoring operation execution means (table content processing program) 1 that can be activated in a multiple manner. A plurality of operation tables 2a, 3a, and 4a that describe display and operation content data that are applied to the monitor operation execution means 1 and are prepared to perform a desired monitor operation are provided. The display of the plurality of operation tables 2a, 3a, and 4a and the operation content data are applied to the monitor operation execution unit 1 that has been operated in a multiplex manner, and a plurality of monitor units 2, 3, and 4 (here, abnormality display unit, tool) Information display means, production information display means).
[0011]
In addition to the monitoring means 2, 3 and 4, the abnormality information collecting means 5 for collecting the abnormality data of the target system in real time, the machining centers M / C1, M / C2,... And the machining center M / C1 are controlled. , M / C 2... Data recording means 7 that constantly collects various data from the target system composed of programmable controllers (PLC 1, PLC 2,...) That monitor the various operating states of the M / C 2. 4, communication means 8 for connecting the abnormality information collecting means 5, data recording means 7 and a large number of PLC1, PLC2,..., Monitoring means 2-4, abnormality information collecting means 5, data recording means 7, communication means 8 Task management means 9 for managing activation and termination is provided. Reference numeral 10 denotes a CRT for displaying monitor contents, and reference numeral 11 denotes input means such as a mouse or a keyboard.
[0012]
  First, the plurality of operation tables 2a, 3a, and 4a are here for displaying an abnormality 2a in real time and for displaying tool information.3aFor displaying production information by means of a recording file 6 recording production information4aHas been prepared. Each of the operation tables 2a, 3a, and 4a is called by a logic table in which a plurality of operations performed by the monitoring means 2, 3, and 4 are described in a sequence formula, and the logic table is called. It consists of a combination of a function table in which instructions related to data display are described in text, and an object table in which data access information such as a data output destination and a reference destination referenced by a logic table or function table is described.
[0013]
Hereinafter, the case of tool information display will be described. In the operation table 3a for displaying tool information, an initialization unit 20a is provided at the top of the logic table 20. Here, for example, an event condition is described which indicates where the mouse is clicked at which position the event is valid. In the example of FIG. 3, first, an identifier for setting an event effective mouse area is described, and subsequently, setting area data (on the screen) for event A, event B,... Is described. The mouse click valid area is set on the screen, and when the mouse is clicked on that part, the event set in that part is valid. In addition to this, the event condition can be set to occur at a predetermined time (for example, every 1 second) or generated from other applications, and the event occurrence is treated as a flag, and these flags are combined. It is also possible to set event conditions.
[0014]
In the case of the screen of FIG. 2 showing the tool information display screen, several rectangular areas (first page, previous page, rear page, production information, end) are set at the lower part of the screen. Here, events A, B, and C correspond to “first page”, “previous page”, and “back page”, respectively, and a rectangular area “correct” corresponding to event D is displayed at the upper right of the screen. It is assumed that it is set. The same applies to the case where the other screens of the monitor means 2 and 4 are configured (abnormal display screen in FIG. 8, production information display screen in FIG. 9). The screen display of the rectangular area itself is drawn by a simple drawing command of the function table 21 described later. The initialization unit 20a describes function table 21 for displaying the initial screen (first page) and each identifier for calling the object table 22 and table name data to be called.
[0015]
The logic table 20 is provided with a main processing unit 20b following the initialization unit 20a. The main processing unit 20b is a part surrounded by an identifier “MAIN START” indicating the start of the main processing unit 20b and an identifier “MAINEND” indicating the end of the main processing unit 20b. In the main processing unit 20b, the event notification by the mouse described above is used as a determination condition, and the processing performed when the event notification is received is described in text following the condition identifier, and all performed by the tool information display means 3 Are sequentially described in the sequence expression.
[0016]
In the case of tool information display, the screen configuration (line frame or title character) is all the same, and the data displayed there is different. Therefore, the record number processing in the record number reference table 23 (FIG. 7) indirectly specified in the object table 22 to be described later is performed, and the processing corresponding to the screen to be displayed is read from the reference file DAT1. . Here, five pieces of tool information are displayed here. As will be described later, since one record in the reference file DAT1 corresponds to each tool in order as described later (FIG. 6), the top in the main processing unit 20b. In the page display process, the record number in the record number reference table 23 is set to an initial value (1 to 5) corresponding to the tool numbers T1 to T5. In the previous page display process, the record number in the record number reference table 23 is set. Each record number of "5" is subtracted by "5" and a record number smaller by "5" is set for each of the five record numbers currently displayed. In the subsequent page display process, the record number reference table 23 is set. The record number is incremented by “5”, and the record number is incremented by “5” with respect to the five record numbers currently displayed. . These arithmetic processes are described after the condition identifier for determining each event, and are executed when there is a corresponding event.
Similarly, after the event determination identifier of the input process as the process D, when “correct” on the screen is clicked, another window for prompting input on the screen is popped up as shown in the lower diagram of FIG. When the display data to be corrected is selected and input is corrected with respect to the data, the content in the reference file DAT1 in which the selected display data is recorded is rewritten with new corrected data. is described.
[0017]
Subsequent to the main processing unit 20b, a macro description unit 20c is provided. The macro description part 20c describes some common processes that are used in common in each process of the main processing part 20b, and the macro description part 20c is common to the macro description part 20c during the process described in the main processing part 20b. The process is to be called.
[0018]
Next, the function table 21 for displaying the tool information is shown in FIG. 4. The simple drawing function “DRAW” that does not refer to the object table 22 is followed by the title “Tool information” and “Current” in the data display table. Character string drawing command (TEXT) for drawing character strings such as “value”, “tool number”, “station used, machining location”, and “first page” in the mouse click area, and data display A frame drawing command (BOX (rectangular drawing), LINE (line drawing)) for drawing a table frame is described along with display position data, character size, and other information necessary for drawing.
[0019]
The function table 21 describes a reference drawing function “TEMPLATE”. In this reference drawing function, an object table number to be referred to, a drawing command, information necessary for drawing, and a display method are designated following the function “TEMPLATE”. For example, to display binary data referred to by a certain object table number as a decimal value, a drawing command “TEXT” is combined with “VALUE” specifying a display method as a numerical value, followed by “decimal display”. Describe "Conversion". In addition, when the character string data designated by the object table number is output as a character string on the screen as it is, the drawing command “TEXT” and “STRING” designating the display method as the character string are described in combination.
[0020]
In addition to conversion between character string data and numerical values, the present invention further specifies graphic drawing “circle: CIRCLE” or “line: LINE” as a drawing command, You can also describe conditions. For example, when “Yen” is specified as a drawing command and the display method shows that the data indicated by the referenced object table number is a certain value, it is simply “Yen”. When a condition such as “paint a circle in yellow” is designated, the described display control means 63 interprets the described condition and displays the lamp as if it was lit. In addition, the “line” as a drawing command is designated, and the line drawing start point and end point position data, which is necessary when displaying the “line” on the screen, indicates the end point data with the referenced object table number. When a condition such as proportional to the previous data is specified together with the mathematical expression, the display control means 63 to be described later interprets the described condition, and the length of the line corresponds to the previous data indicated by the object table number. Display as determined. The actual description of this point is shown in the following equation (1). Of course, the display method including such a condition can be described in the display method after the drawing command.
[0021]
A large number of object tables are prepared for one operation table. Object table numbers are sequentially assigned to the object table, and each assigned object table has a PLC number, a device number in the PLC, and a communication data size, which are targets of data reading and writing. (FIG. 5B) or data position information (access information) such as a file name of a state data file to be referred to and a position of data content to be referred to in data specified by the file name are recorded. (FIG. 5 (a)).
[0022]
As shown in FIG. 5A, two object tables 22 in the case of tool information display are provided here for each tool. An object table (number 1001 for the tool T1) for designating the reference number of the PLC number, device number, and communication data size for reading the current value of the number of times each tool is used, and each character string data of the tool number of each tool and usage An object table (number 1002 in the tool T1) for designating the reference destination of the character string data of the station and the machining part is paired with respect to one tool (T1). In these tables, the reference file DAT1 is designated as the reference destination file by the description of “FILEDAT1”, and the record number assigned to each tool in the file DAT1 is designated separately by “@ ***”. By referring from the reference destination of the number reference table 23 and further specifying the data position in the record of the reference destination file DAT1, only the necessary part is cut out from the data in one record.
[0023]
As shown in FIG. 7, the record number reference table 23 has a number of reference destinations corresponding to the number of tools displayed on one page. Here, since five tools are displayed on one page, five reference destinations (101 to 105) are secured. In the reference destination data, “1 to 5” is set in the case of the initial screen and the top screen. When an event occurs in which the page display is switched, the main processing unit 20b performs arithmetic processing. The processing result is reflected, and the tool numbers of five tools corresponding to the screen to be displayed are set.
[0024]
In the reference file DAT1 (FIG. 6) designated by the object table 22, one record is assigned for each tool, and record numbers are assigned in order from the top. That is, as the data of the record number 1, “PLC number, device number, communication data size for reading the current value of the tool T1” is displayed in the n-byte area from the head, and “T1” is displayed in the subsequent m-byte area. Character string data, use station “ST1”, machining location “15 mm hole” are recorded, and record number 2 data includes the PLC number, device number, and communication data for reading the current value of the tool T2. Character string data such as size, character string data of “T2”, use station “ST2”, machining location “20 mm hole” is recorded, and the same applies to tools T3 and below.
[0025]
Therefore, in the object table 22, “PLC number, device number, communication data size” is obtained by referring to n bytes from the head of the data of one record in the reference file DAT1, and the subsequent m bytes are referred to. As a result, the character string data of “tool number, use station, machining location” is acquired. Further, in the object table 22, the record number to be referred to in the reference file DAT1 is not directly described, but is indirectly specified as the record number reference destination in the object table 22, and the indirectly specified data is outside the object table 22. Therefore, when the reference destination (record number) is to be changed, the indirect designation data is set without changing the object table 22 (the record number reference destination table 23). There is an advantage that only changes are required.
[0026]
  In the tool information display screen described above, the function table21, Object table22Has only one each, and even if the screen is switched, these tables are not changed. However, if the screen display configuration is different for each screen (each process), basically each process Function table for each process and the function table21Object table for each process referenced by22In the main processing unit 20b, the table name is described together with the table call identifier.
[0027]
Next, the abnormality information collecting means 5 for detecting an abnormality in real time constantly monitors the state of a specific abnormality detecting device of each PLC. When an abnormality is detected, the abnormality display means 2 is activated to perform a display operation. It comes to let you. The abnormality display means 2 (abnormality display program) is also generated by applying the abnormality display operation table 2 a to the monitor operation execution means 1. In the operation table 2a in this case, an initial screen as shown in the upper diagram of FIG. 8 is set, and by clicking “Details”, a detailed diagram of the location where the abnormality has occurred is displayed. That is, on the initial screen, a function table for displaying line frame drawing and character (numeric) data for notifying the occurrence of an abnormality and an object table corresponding to the function table are used. And the function and object table for drawing the location where the error occurred are used. Further, the abnormality information collecting unit 2 can also start an application different from the abnormality display unit depending on the state of the device.
[0028]
The production information display means 4 displays the number of processing for each processed workpiece type on the screen. In the initial screen, the processed workpiece is indicated by “numerical values” (upper diagram in FIG. 9), but a function using a reference drawing function as a function table for the second page is prepared for graphic display. In this example, when you click “Graphics” at the bottom of the screen, the end point of “Line” is set to the position corresponding to the machining number corresponding to the work type indicated in the referenced object table so that the number becomes a bar graph. As you can see, a function table is created.
In this case, the functions described in the function table will be described with respect to the work WR1.
Object table number, LINE, start point (X1, Y1), end point (X2, Y1), WILD, arithmetic expression: X2 = X1 + reference data of object table (number of processes) X coordinate direction length), line thickness (1)
Is described. Here, “WILD” and below indicate the display method designation, and “WILD” indicates the proportional calculation method, and indicates that the result based on the formula designated by the computation formula is reflected in the X coordinate of the end point. . In the screen display, the horizontal direction is the X coordinate and the vertical direction is the Y coordinate. When the workpiece machining number data S1, S2,... Are recorded as specific device data of the PLC, the object table has a reference PLC number, a reference device number, and a communication in the object table as shown in FIG. A direct description of the data size is used.
[0029]
  The monitor operation execution means (monitor operation execution program) 1 for reading these operation tables 2a, 3a, 4a is composed of a logic processing unit 50 and a function table processing unit 60. As shown in FIG. 10, whether the event notified from the OS is “valid” with respect to the monitor unit 3 (2, 4) generated by the monitor operation execution unit 1 by reading the operation table 3a (2a, 4a). Event check means 51 for determining "if valid, execution start means 52 for starting execution of the main processing section of the logic table of the monitoring means 3 (2, 4), and a plurality of processes described in the main processing section. Execution means 53 that performs processing corresponding to the event condition by processing the sequence expression from the beginning, interpreting the identifier and the processing content, and end determination means that finishes execution with “MAIN END”54When “MAIN END” is determined, the process ends and waits for the next event, and returns to the top of the main processing unit 20b so as not to repeat the process. This is very important when a large number of sequential monitor programs are executed simultaneously. In other words, in a normal sequence type monitor program, the cycle from the beginning to the end of the program is always repeated. Therefore, if a plurality of monitor programs perform such an operation, there is a possibility that the monitor processing cannot be performed unless the computer has a high processing speed. However, in the event-driven method, the main processing unit 20b is processed once for one cycle from the beginning to the end, so that the processing is not repeated at all times. Therefore, the load on the computer can be reduced, and a computer system with low ability is sufficient. It can be processed.
[0030]
In the function table processing unit 60, an identification unit 61 that identifies a function described in the function table referenced from the logic table, and a simple drawing process that does not refer to the object table corresponding to the function identified by the identification unit 61 And executing means 63 for executing reference drawing processing for referring to the object table. The execution means 62 for executing the simple drawing process interprets the drawing command that follows the simple drawing function and converts the “character string” and “figure (box, line, circle, etc.)” into the specified drawing information. Draw on the screen. Further, the execution means (display control means) 63 for executing the reference drawing process interprets the object table and the drawing command following the reference drawing function, and performs processing for displaying on the screen in a method designated as the display method.
[0031]
The task management means 9 is activated at the same time as the monitoring system is activated, and the tool information display means 3, the abnormality information collection means 5, the data recording means 7, the activation means 70 for controlling the activation of the communication means 8, and the monitor device end At times, there is a stop means 71 for closing all programs.
The data recording means 7 collects designated data from the PLC at a preset designated time. For example, the data recording means 7 records the operating state (abnormality history) of the machine tool in the recording file 6. The data recording means 7 can also start another application based on a time table (not shown). The communication means 8 exchanges data between various monitor means 2 to 4, abnormal information collection means 5, data recording means 7, and internal files (reference file DAT1, recording file 6 etc.) of the PLC or personal computer PC. It has a plurality of data exchange areas to perform (FIG. 12), processes communication requests from the monitoring means set in the plurality of data exchange areas in order from the top, and returns necessary data to the data request source Then, the communication request set in the next communication area is processed.
[0032]
When the task management unit 9 is activated, the tool information display unit 3, the communication unit 8, the recording unit 7, and the abnormality information collection unit 5 are activated. The tool information display unit 3 is generated by applying the operation table 3a for displaying tool information to the monitor operation executing unit 1 activated on the multitask OS. The logic table 20 is read, the initialization unit 20a is executed, the event valid mouse area is set, the function table 21 and the object table 22 for the initial screen (first page: upper diagram in FIG. 2) are read, and the record Initial values “1 to 5” are set in the number reference table 23. As a result, the record number 1 of the data file DAT1 is stored in the object table numbers 1001 and 1002 (for the tool T1), and the record number 2 of the data file DAT1 is stored in the object 1003 and 1004 (for the tool T2). 1005 and 1006, record number 3 is set in 1007 and 1008 for tool T4, and record number 5 is set in 1009 and 1010 for tool T5. For example, in object table number 1001, tool number T1 is set. The position of “PLC number, device number, communication data size” from which the current value is read is specified, and the PLC number, device number, and communication data size are read from the data of record number 1 of the reference file DAT1, and communicated with the PLC. Communication is carried out via means 8, and the data of the designated device is In the object table number 1002, the position of the character string data of “T1”, “ST1”, and “15 mm hole” is designated, and these data are read out from the data of record number 1 of the reference file DAT1. The screen shown in the above figure is displayed. After the processing of the initialization unit 20a, the main processing unit 20b is not executed and waits for an event.
[0033]
On the other hand, the recording means 7 and the abnormality information collecting means 5 are also simultaneously operated on the multitask OS, and the recording means 7 collects designated data from the PLC via the communication means 8 at a preset designated time. The recording is continued in the recording file 6. Also, the abnormality information collecting means 5 is simultaneously activated on the multitasking OS and detects PLC abnormality information in real time. At this time, the abnormality display unit 2 and the production information display unit 4 are not activated.
[0034]
In this state, when the “back page” of the tool information display means 2 is clicked, a valid event for the tool information display means 3 occurs. At this time, the function table 21 and the object table 22 are not changed from those read at the beginning, but the main processing unit 20b of the logic table 20 is executed by a valid event for the tool information display means 3 to identify the condition for each event. Processing C (rear page display processing) in which the event conditions match is performed in order from the top, and “1-5” in the record number reference table 23 is “5” respectively in the main processing unit 20b. It is added and changed to “6-10”. As a result, the data indicated by the record number reference destination of the object table numbers 1001 and 1002 is designated with the record number 6 of the data file DAT1, and the data for the tool T6 is read out. Similarly, the data of the object table numbers 1003 and 1004 are read. In the data indicated by the record number reference destination, the record number 7 of the data file DAT1 is designated, the data for the tool T7 is read, and so on, so that the reference record number (data reference destination) of the reference file DAT1 is changed. . Accordingly, the tool information screen displays the contents of the tools T6 to T10 as shown in the lower diagram of FIG.
[0035]
When an abnormality is detected for the first time by the abnormality information collection means 5 from the start of monitoring, the abnormality information collection means 5 activates the abnormality display means 2. The abnormality display means 2 is generated by multiplex activation of the monitor operation executing means 1 on the multitask OS and applying the abnormality display operation table 2a thereto, and a screen as shown in the upper diagram of FIG. 8 is displayed as the tool information display means. 3 is displayed on the same screen as the screen by 3. At this time, the production information display means 4 is not activated.
When “details” is clicked after the abnormality display means 2 is activated, a valid event for the abnormality display means 2 is generated, and the monitor operation execution means 1 generating the abnormality display means 2 determines that the event is valid, A process (detail display screen display) is performed on the condition of the event, and the details of the station are displayed on the screen (lower figure in FIG. 8).
In addition, after the abnormality display unit 2 is activated, an event occurs when the abnormality information collection unit 5 detects a change in the abnormality content or the number of abnormalities, and the event is notified to the abnormality display unit 2. The abnormality display means 2 validates the event and displays the newly generated abnormality content on the initial screen in the upper diagram of FIG.
[0036]
When “production information” is clicked on the tool information display screen while these are activated, the monitor operation execution means 1 operating on the tool information display operation table 3a is triggered by the event, and the production information is displayed. The operation table 4a for display is read. As a result, a production information display screen is displayed instead of the tool information display screen, and communication with the PLC is performed to display the number of productions by work type recorded in a device of a predetermined PLC (FIG. 15). . In the initial screen (upper figure in FIG. 9), the numerical data of the production number is simply displayed as numerical values. However, when "Graphic" is clicked, a valid event for the production information display means 4 is generated, the main processing part of the logic table of the production information display means 4 is executed, and the process that matches the event condition of clicking "Graphic" That is, the “bar graph display process” is performed based on the description of the reference drawing function of the above-described equation (1).
Here, the production information display means 4 is activated in place of the tool information display means 3, but the monitor operation execution means 1 is further activated in multiple times to activate the tool information display means 3 and the production information display means 4 simultaneously. It may be like that. In addition to the above, the monitor means can be provided with an abnormality history display means and a machine stand operating state display. In this case, since the display form of the screen may be changed in the data described in the operation table, the generation of another monitoring means is extremely easy.
[0037]
【The invention's effect】
As described above, in the present invention, the display and operation data for performing the monitor operation are described in the operation table, and the display and operation data are applied to one monitor operation execution unit that can be activated in multiple ways. Has implemented a plurality of monitor programs by interpreting, processing and displaying the description of the operation data, and executing the contents described as the operation data. Since it needs only to be modified and not described from the source program, development and modification can be performed very easily. In addition, since a plurality of monitor programs can be started in multiple (parallel) on the multitask OS, a large amount of monitor information can be viewed on one screen.
In addition, after the first activation, the monitoring means performs a monitoring operation for one cycle by an event driven method based on a predetermined event, and thereafter enters a waiting state for the next event. Even when a plurality of monitor units to be executed are processed in parallel on the multitasking OS, the burden on the computer executing the monitor program can be reduced as compared with the case where the sequence processing is always repeated.
In addition, since the reference data position specified in the function table is specified outside the function table, it is easy to change the reference destination without changing the function table.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a monitoring system.
FIG. 2 is a tool information display screen.
FIG. 3 is an explanatory diagram of a logic table.
FIG. 4 is an explanatory diagram of a function table.
5A and 5B are explanatory diagrams of an object table, where FIG. 5A is an indirect description method, and FIG. 5B is a direct description method.
FIG. 6 is a diagram illustrating a reference file referred to by an indirect description type object table;
FIG. 7 is a diagram showing a record number reference table referenced by an indirect description method object table;
FIG. 8 is an abnormality display screen.
FIG. 9 is a production information display screen.
FIG. 10 is a diagram showing monitoring operation execution means.
FIG. 11 is a diagram showing task management means.
FIG. 12 is a diagram showing a shared memory of communication means.
FIG. 13 is a diagram showing a monitor screen in a state where the monitor means is activated in a multiple manner.
[Explanation of symbols]
  1 Monitor operation execution means
  2a, 3a, 4a action table
  2 Abnormal display means (monitor means)
  3 Tool information display means (monitor means)
  4 Production information display means (monitor means)
  6 Record file
  7 Data recording means
  8 Communication means
  9 Task management means
  20 logic tables
  20a initialization section
  20b Main processing unit
  20c Macro description part
  21 function table
  22 Object table
  23 Record number reference table
  50 Logic processing section
  51 Event check means
  52 Execution start means
  53 Execution means
  54 End determination means
  60 Function table processing section
  63 Display control means
  PLC1, PLC2 ... Programmable controller (target system)

Claims (2)

In a monitoring system in which a plurality of monitoring means are operated on a multitasking OS and data is exchanged with a target system to display a screen.
Operating on a multitask OS, indication given by the operation table, a display in accordance with the operation content data, multiplexing bootable one monitor operation execution means for performing the operation (1), the monitoring operation execution means (1) A plurality of the action tables describing the display and action content data applied to
The operation table is referred to by the logic table (20) in which a plurality of operations of the monitoring means realized by the monitoring operation executing means (1) are described in a sequence expression, and the logic table (20) to display and display operation content data. Is composed of a function table (21) in which is described, and an object table (22) which is referred to by the function table (21) and has data access target information used for the monitoring operation.
The logic table (20) is provided with an initialization unit (20a), a main processing unit (20b), and a macro description unit (20c) in order from the top. The initialization unit (20a) generates a predetermined event. The event condition is defined in advance so that the monitor operation based on the operation table is executed only when the event is notified, and the main processing unit (20b) is performed when the event notification is received with the event notification as a determination condition. Each process is described in text following the condition identifier, all operations performed by the tool information display means are sequentially described in a sequence expression, and the macro description part (20c) is commonly used in each process of the main processing part. The common process of the macro description part (20c) is called in the middle of the process described by the main process part (20b).
The monitoring operation execution means (1) is composed of a logic processing section (50) and a function table processing section (60), and the logic processing section (50) sends an event notified from the OS to the monitoring means. An event check means (51) for determining whether it is valid, an execution start means (52) for starting execution of the main processing section (20b) if valid, and a plurality of descriptions described in the main processing section (20b) The processing unit is provided with an execution means (53) for processing from the top in a sequence expression and an end determination means (54) for finishing the execution of the main processing part (20b), and the main processing part (20b) is set to 1 from the top to the end. Finish after processing for a period,
A plurality of monitoring means can be configured by displaying the plurality of operation tables and the operation content data is operated in a multiplexed manner, and a plurality of monitoring means can be configured, and communication means for exchanging data between these monitoring means and the target system A monitoring system characterized by being connected in (8) . The reference drawing function described in the function table (21) for displaying the screen with reference to the object table (22) is used or processed using the data specified in the referenced object table (22). The function table processing unit (60) includes display control means (63) that interprets the display method and performs display control according to the display method. ,
In the object table (22), data access target information is indirectly described, and by specifying the indirect description data separately outside the object table (22), the data access target specified in the object table (22) is specified. The monitoring system according to claim 1, wherein the monitoring system is variable .

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