JP5558151B2 - Programmable controller, programmable controller management device, and module name determination method program - Google Patents

Description

  The present invention relates to a programmable controller and the like. In particular, the present invention relates to a program for a programmable controller, a programmable controller management device, and a module name determination method that perform processing for recognizing a connected module.

  In programmable controllers (hereinafter referred to as "PLCs"), versatility, expandability, etc. are improved by modularizing devices that input / output (transmit / receive) signals from controlled devices and changing the modules that are inserted into and removed from connectors. (For example, refer to Patent Document 1). The control means (the control means may be modularized) that sends and receives various signals to and from each module and controls each module (device to be controlled (machine)) is a system configuration (which connector This is done every time the power is turned on, and this must be done as soon as possible (within the time guarantee). In particular, when hot-swapping (hot swap) is performed in a power input state, a device to be controlled may be operating, so it is necessary to perform detection faster.

  Therefore, each module has, for example, a module ID code defined for each product as data. And a control means recognizes and detects the module connected based on the module ID code in the signal transmitted via a bus | bath.

  On the other hand, it is important for an administrator who manages (monitors) a PLC to recognize and manage which module is connected to which connector of the PLC main body. Here, since the module ID code is basically simply a number assigned to each module, even if the module ID code is shown, the monitor can connect any module. It is difficult to judge whether

  Therefore, a control processing device such as a computer connected to the PLC by wire or wireless performs processing for displaying the module name on the display unit based on the module ID code in the signal transmitted from the PLC.

  In order to realize this processing, the PLC control means has, for example, name data corresponding to the module ID code in a table or the like in a storage unit included in the control means. And a control means searches the data of the name of a corresponding module from a module ID code. Then, the module name data included in the signal transmitted from the PLC is processed, and the control processing device displays the module name on the display means. This control processing device realizes the above processing by executing processing based on a program provided as software (tool), for example.

JP 2001-255910 A (FIG. 1)

  However, there is no regularity in the module ID code attached to each product, so each time a new type is made, the name data must be associated with the module ID code of the product, which is a burden on the development side. It was. In particular, when the module ID code and the name data are stored in the PLC as described above, the name of the module can be obtained even if a new module is connected to the PLC main body (control means) not compatible with the new product. Cannot be displayed.

  Therefore, the present invention has been made to solve the above-described problems, and the PLC that can reduce the burden on the development side and can immediately grasp the module connection status on the administrator side, and its management device The purpose is to obtain a program for determining the name.

  The programmable controller (PLC) according to the present invention is a programmable controller to which one or a plurality of modules are connected, and each module is determined according to one or a plurality of functions (including manufacturer information and the like) provided in each module. Each having a module ID code for identifying the module.

In addition, the programmable controller according to the present invention is determined according to the storage means for storing the character data corresponding to one or more functions provided in each module and the one or more functions provided in the modules, When a signal including module ID code data for identifying a module is transmitted from the module, the function of the module is determined based on the module ID code, and the character stored in the storage means is determined based on the determined function. And control means for generating data of module names by selecting and combining these data.

  The module ID code of the programmable controller according to the present invention is determined based on at least input or output, analog or discrete, the number of points and the number of channels, and the functions distinguished from DC type or AC type. .

  In addition, the programmable controller management device according to the present invention includes a storage unit that stores character data corresponding to one or a plurality of functions respectively provided in a programmable controller module configured by connecting one or a plurality of modules, When a signal including module ID code data for identifying a module, which is determined according to one or a plurality of functions included in each module, is transmitted from the programmable controller, the signal is connected to the programmable controller based on the module ID code. The function of the selected module is determined, the character data stored in the storage means is selected based on the determined function, and the combined name data is generated, and the name of the module connected to the programmable controller is determined. display And control means for transmitting a display signal for causing, in which a display means for performing display based on the display signal.

  Moreover, the program of the module name determination method which concerns on this invention is for identifying the module each determined according to the 1 or several function with which a module is respectively provided with respect to the 1 or several module which comprises a programmable controller. Based on the determined function from the step of determining the function provided by the module based on the data of the module ID code and the storage means storing the character data corresponding to one or more functions provided in each module. The character data is selected and combined, and the computer is caused to generate module name data.

  According to the present invention, in a programmable controller to which one or a plurality of modules are connected, based on data of a module ID code for identifying a module, which is respectively determined according to one or a plurality of functions included in each module. Programmable, for example, by executing a program to determine the function of the module, select the character data stored in the storage means based on the determined function and combine them to generate the module name data Since the controller or the programmable controller management device is made to perform the name, the name is automatically determined based on the function of each module, and the module ID code and the name do not have to be associated one by one. Therefore, for example, the name can be displayed without updating the program for associating the module ID code with the name. Since the name data is displayed as a combination of character data corresponding to the function of the module, the function of the module can be determined from the displayed name. Further, the data (information) relating to the function necessary for the module to grasp the module is used as the module ID code, so that the controller can quickly obtain the necessary data relating to the module when the module is connected.

It is a figure showing the structure of the PLC system centering on PLC which concerns on 1st Embodiment. It is a figure showing the example of the module ID code in embodiment of this invention. It is a figure showing the structure of the low-order byte of a module ID code. It is a figure showing the structure of the high-order byte of a module ID code. It is a figure showing the structure of the high-order byte of an analog type module ID code.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of a PLC system centered on a PLC according to a first embodiment of the present invention. In FIG. 1, the PLC main body 1 receives various data between the power supply means 1A for supplying power to the connected modules 3-1 to 3-n, the control means 2 and the modules 3-1 to 3-n. It has at least a bus 1B that serves as a transmission path for the signals it contains.

  The control unit 2 includes a storage unit 2A, transmits and receives signals including various data to and from the modules 3-1 to 3-n via the bus 1B, and is based on a program (command) stored in the storage unit 2A. For example, data processing is performed, and for example, the operation of a device connected to the module is controlled. Further, processing necessary for controlling the operation of the entire PLC, such as communication control with a control device (control processing device 10) outside the PLC, is performed. In particular, in the present embodiment, the module ID code included in the signal transmitted from each module via the bus 1B when power is supplied to the modules 3-1 to 3-n (connected to the bus 1B). Is analyzed (determined), and a process of assigning a name corresponding to the module ID code to each module is performed. In order to perform this processing, the storage unit 2A associates a value represented by a group of one or more bits constituting a module ID code with data of characters (characters, numbers, symbols, etc.) assigned as names. Is remembered. Here, the control means 2 transmits and receives signals to and from the control processing device 10, but an independent communication module (not shown) is provided to communicate with the control processing device 10. There is also.

  The modules 3-1 to 3-n are configured by, for example, an input module, an output module, and the like. Each module transmits a signal transmitted from a connected control target device (machine, not shown) to the control unit 2 and controls the device based on the signal transmitted from the control unit 2. Further, depending on the module, the connected control target device is controlled without using the control means 2. In the present embodiment, each module has a module ID code determined by a method described later. Here, the modules 3-1 to 3-n are distinguished from the control means 2 and the power supply means 1A, but the control means 2 and the power supply means 1A may also be modularized (CPU module, power supply module). .

  A control processing device 10 serving as a programmable controller management device includes data processing means 11, input means 12, display means 13, storage means 14, and communication means 15. The data processing unit 11 performs processing for managing (monitoring) the PLC based on various data included in a signal transmitted from the control unit 2 via the communication unit 15. In some cases, support processing for programming processing instructions to be executed by the control means 2 is performed. In the present embodiment, name data included in the signal transmitted from the control unit 2 is processed, a display signal for displaying the name is transmitted, and displayed on the display unit 13. In addition, the data of the name linked | related with the data of the conventional module ID code is memorize | stored in the memory | storage means 14, for example in the table format, The name is searched by the conventional method, and the process which displays the name on the display means 13 is performed. Can also be done.

  The input unit 12 transmits an operator instruction as a signal to the data processing unit 11. The display unit 13 performs display based on the display signal transmitted from the data processing unit 11. The storage unit 14 stores a program that indicates a processing procedure performed by the data processing unit 11. The processing performed by the data processing means 11 is realized based on this program. The communication unit 15 is a unit that serves as an interface when performing communication using signals between the PLC control unit 2 and the data processing unit 11.

  FIG. 2 is a diagram illustrating an example of a module ID code in the embodiment of the present invention. The module ID code in the present embodiment is composed of 16 bits (each bit number is 0 to 15), and each of the lower byte (bit numbers 0 to 7) and the lower byte (bit numbers 8 to 15). A distinction shall be made. One or a plurality of bits represent the function of the module (including a manufacturer name and the like, which is not strictly a function), and the control means 2 grasps in advance for processing such as control. It should be left.

  FIG. 3 is a diagram showing the structure of the lower byte of the module ID code. In the present embodiment, in the lower byte, 4 bits of bit numbers 7 to 4 are grouped to represent a manufacturer code (for example, “0001” represents that it is made by KOYO). Further, as shown in FIG. 3, bit numbers 3 to 0 are grouped (representing functions that cannot be represented by binary (1 bit) by grouping), and the types of modules are represented. If the bit number 3 is “0”, it indicates that it is a discrete or analog module. In this case, in bit number 2, if it is “0”, it is a discrete module, and if it is “1”, it is an analog module. Further, bit number 1 represents the presence / absence of an output function (output function), and bit number 1 represents the presence / absence of an input function (input function).

  On the other hand, if the bit number 3 is “1”, it represents a special module (special module, for example, etc.). In this embodiment, “000” to “110” represented by bit numbers 2 to 0 are not defined (does not represent a function). “111” represents a module of a type other than a predetermined type.

  FIG. 4 shows the structure of the upper byte of a discrete type module ID code. When the module type is a discrete or analog module (bit number 3 is 0), the contents of the upper byte are different. As shown in FIG. 4A, in the case of a discrete input module (bit numbers 3 to 0 of the lower byte are “0001”), the score is expressed by grouping 3 bits of bit numbers 10 to 8. For example, “000” = 2 points (point), “001” = 4 points, “010” = 8 points, “011” = 16 points, “100” = 32 points, “101” = 64 points, “110” = 128 points and “111” = 256 points. Bit numbers 14 to 11 are not used. If bit number 15 is “0” as a group, DC (direct current) type is indicated, and “1” indicates AC (alternating current) type.

  On the other hand, in the case of a discrete output module as shown in FIG. 4B (bit numbers 3 to 0 of the lower byte are “0010”), the score is calculated by grouping 3 bits of bit numbers 8 to 10 as in the case of the discrete input module. Represent. Bit numbers 11 and 12 are not used, and if bit numbers 13 and 14 are grouped as “00”, they represent a DC type, “01” represents an AC type, and “10” represents a relay type. Further, when the bit number 15 is “0”, there is no fuse or a common type, and when the bit number is “1”, it indicates a type in which a fuse is provided for each point.

  FIG. 5 is a diagram showing the structure of the upper byte of an analog type module ID code. Next, in the case of an analog module (bit numbers 3 to 0 of the lower byte are “011 ×”), the number of input channels is expressed by grouping 2 bits of bit numbers 9 and 8. For example, “00” = 2 channels, “01” = 4 channels, “10” = 8 channels, and “11” = 16 channels. Similarly, the number of output channels is expressed by taking 2 bits of bit numbers 11 and 10 as a group. Further, the bit number 12 represents the type of input data. If it is “0”, it represents 24-bit data, and if it is “1”, it represents 24-bit data by 2's complement. Bit number 13 represents a method of storing the value of each channel. If “0”, storage by multiplex (a storage area is not defined for each channel in the storage means), and if “1”, memory is stored. This represents storage by a map (a storage area is determined for each channel in the storage means). A 2-bit group of bit numbers 15 and 14 represents the type of analog I / O. “00” represents an analog input type, “01” represents a temperature input type, and “10” and “11” represent other types.

  The control means 2 of the PLC is “0” in binary or “1” based on the module ID code included in the signal transmitted from the modules 3-1 to 3-n via the bus 1B. Is determined for each bit, and the module ID code is recognized. Then, as described above, a plurality of bits are conceptually treated as a group, and the corresponding character data is searched from the character data stored in the storage unit 2A based on the value of each group, and name data is generated. . At this time, since the determination of the upper byte differs between analog / discrete and input / output, the determination is made from the group of lower bytes.

  In the case of generating name data, for example, consider a case where T1 [1]-[2] [3] is assigned as a name. Here, the first “T1” is added as a prefix of the name, for example. The manufacturer code described above is attached to the part [1] (for example, “K” is attached to KOYO).

In [2], the number of discrete modules or the number of channels in an analog module is added. The characters according to the module type are attached to the part [3] as follows.
Discrete input type: “ND” (DC input), “NA” (AC input)
Discrete output type: “TD” (DC output), “TA” (AC output),
"TR" (relay output)
Analog input type: "AD", "THM" (temperature input)
Analog output type “DA”

  For example, a signal including a module ID code of “0000 0010 0001 0010” in binary (“0212” in hexadecimal) is transmitted to the control unit 2 via the bus 1B. The control means 2 determines the value of each bit number and analyzes the module ID code as described above. In the case of the above module ID code, for example, the name T1K-08TD is given. This represents a “Kyoyo”, 8-point DC type discrete output module.

  On the other hand, when a request is made from the control processing device 10 (data processing means 11), a signal including data of this name is transmitted to the control processing device 10. For example, the data processing unit 11 processes the name data together with other management data, and the data processing unit 11 transmits a display signal based on the name data to cause the display unit 13 to display the name. The administrator can determine not only the name but also the type of module divided by one or more functions from the name.

  Here, when two or more modules having exactly the same function are connected to the PLC main body 1, the same name is given. However, in the control processing device 10 of the present embodiment, the module (module ID code) is managed on a base and slot basis. For this reason, they are different (basically they will not be the same on one system), and even if a name is generated based on a module ID code set based on a function, it is distinguished from the base and slot. Therefore, it is considered that no problem occurs in the display.

  As described above, according to the first embodiment, the module ID code of the modules 3-1 to 3-n is determined based on one or more functions provided in the module, and the control unit 2 However, each bit constituting the module ID code is determined, and the character data corresponding to the value represented by the bit (including those treated as a group) is selected (searched) from the storage unit 2A and combined to generate name data In the control processing device 10, the display unit 13 can display the name based on the name data. Since the name is automatically determined in advance based on the function of each module, the module ID code and the name do not have to be associated one-to-one. Therefore, for example, each time a new product is sold, the module ID code and the name data need not be associated, and the name can be displayed without updating the program associated therewith. Since the name data is displayed as a combination of character data corresponding to the function of the module, the function of the module can be determined from the displayed name. Further, since the data (information) related to the function necessary for the control means to grasp the module is used as the module ID code, the control means 2 can quickly obtain the data necessary for grasping the module when the module is connected.

Embodiment 2. FIG.
In the above-described embodiment, the module ID code is set with 16 bits. However, the present invention is not limited to this, and the items to be expressed as the module configuration (the items to be grasped by the control unit 2). ), The number of bits of the module ID code may be changed.

Embodiment 3 FIG.
In the above-described embodiment, the control unit 2 of the PLC generates name data based on the module ID code, and transmits a signal including the name data to the control processing device 10 to display it on the display unit 13. However, the present invention is not limited to this. For example, a signal including module ID code data is transmitted from the control means 2 to the control processing apparatus 10, and the data processing means 11 performs a name data generation process as performed by the control means 2 in the first embodiment. This may be displayed on the display means 13.

DESCRIPTION OF SYMBOLS 1 PLC main body 1A Power supply means 1B Bus 2 Control means 2A Storage part 3-1 to 3-n Module 10 Control processing device 11 Data processing means 12 Input means 13 Display means 14 Storage means 15 Communication means

Claims (4)

In a programmable controller to which one or more modules are connected,
Storage means for storing character data corresponding to one or more functions provided in each of the modules;
When a signal including data of a module ID code for identifying a module, which is determined according to one or a plurality of functions respectively provided in the module, is transmitted from the module, the module is based on the module ID code. And a control means for generating data of the name of the module by selecting and combining character data stored in the storage means based on the determined function. Programmable controller. Module ID code, at least an input or output, analog or discrete, count and the programmable controller of claim 1 Symbol mounting, characterized in that it is determined on the basis of differentiated function in the channel number as well as a DC type or an AC type. Storage means for storing character data corresponding to one or more functions of each of the modules of the programmable controller configured by connecting one or more modules;
When a signal including data of a module ID code for identifying a module, which is respectively determined according to one or a plurality of functions included in each of the modules, is transmitted from the programmable controller, based on the module ID code The function of the module connected to the programmable controller is determined, and based on the determined function, the character data stored in the storage means is selected and combined to generate name data, and the programmable controller Data processing means for transmitting a display signal for displaying the name of the module connected to
A programmable controller management device comprising display means for performing display based on the display signal. For one or more modules constituting a programmable controller,
Determining a function provided by the module based on data of a module ID code for identifying the module, each determined according to one or more functions provided by the module;
Based on the determined function, the character data is selected and combined based on the determined function from the storage means storing the character data corresponding to one or a plurality of functions included in each module, and the module name data is generated. A program for determining a module name that causes a computer to perform a process.

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