JPS6361686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a program input/output device (hereinafter referred to as a programmer) that is versatile for many types of programmable controllers (hereinafter referred to as a PC) used for electrical control of equipment.

The program, which is the control information for the PC, is input into the PC main body using the programmer as an input device. Since the input methods and operating procedures of such programmers differ for each model of PC, it is not possible to input programs unless a dedicated programmer is provided for each model of PC. For this reason, in factories that have introduced many types of PCs, a dedicated programmer is required for each type of PC, and the number of such programmers is large, which is very uneconomical. It is very inconvenient to use this method because it is necessary to know the functions and operating procedures for each item.

The present invention has been made in view of the above points, and its purpose is to provide a general-purpose programmer that can be easily shared by many types of PCs.

The outline of the invention is to enable a single programmer to
In order to share it with a PC, the fixed storage device that constitutes a part of the programmer's electrical circuit is formed into a cassette that can be attached to and detached from the programmer via a connector.
The fixed storage device of each cassette is provided for each model of PC, and contains information for converting the reference circuit information uniformly set in the program input/output device into a program corresponding to each model of PC, as well as programs for each programmable controller. It stores information for converting the information into the reference circuit information, so that even when programming for a different PC model, the operator can program it using the same operating procedure by simply replacing the cassette dedicated to that PC. It was made possible to do so.

Hereinafter, the present invention will be explained based on the drawings.

In Fig. 1, 1 is a cassette for information exchange;
Reference numeral 2 denotes a programmer main body, and a group of keys 3 are provided on the top surface of the programmer main body 2, and a cassette insertion slot 4 is provided on the side surface of the programmer main body 2. A connector 5b that is connected to the connector 5a of the cassette 1 is provided in the cassette insertion slot 4.
is installed. Further, a connection line 6 for electrically connecting to a partner PC comes out from the programmer main body 2.

The cassette 1 is provided for each model of PC, and as shown in FIG.
Only Memory (hereinafter referred to as ROM) 7.

Figure 3 is an internal configuration diagram of this programmer.
The portion within the broken line 1' corresponds to the cassette 1, and the portion within the solid line 2' corresponds to the programmer body 2. In the figure, 8 is a microprocessor, 9 is a ROM containing the system program, and 10 is a RAM (Random Access Memory) used as an auxiliary register.
Menory: Constant speed retrieval storage device (the same applies hereafter), 11
7 is a RAM used as a sequence program file register, and 7 is a ROM memory containing an information exchange program. Regarding the keyboard, 12 is the keyboard section, 13 is the keyboard input section, 14 is the character display section, 15 is the output section, 16 is the circuit pattern display section, 17 is the output section, and 18 is the keyboard section.
An information transmission section 19 for exchanging information with the PC is also a buffer for exchanging information.

FIG. 4 shows how the address space area is divided and used. The system control program area D1 is stored in the ROM 9, the system auxiliary register area D2 and the information exchange program auxiliary register area D3 are stored in the RAM 10, and the sequence program file is stored in the RAM 10. The register area D4 is stored in the RAM 11, and the information exchange program area D5 is stored in the ROM7.

Next, to explain the function of each of these areas, the system control program area D1 is the keyboard section 1.
2. It controls the character display section 14, the circuit pattern display section 16, and the linkage control with the information exchange program area D5. System auxiliary register area D2
has holding register functions such as system stack, keyboard input, character display, circuit pattern display, etc., and program auxiliary register area D3 for information exchange has functions such as stack for information exchange, auxiliary register, flag, etc. be. The sequence program file register area D4 is a register containing a copy of the program in each PC, and is used for creating, modifying, etc. the program.

The information exchange program area D5 is used to mutually exchange information between the PC and the programmer, converting information entered through the keyboard section into reference circuit information for converting information that is compatible with various PCs, as shown in FIG. 5 as an example. This is a program area that implements various functions for connection. The program in this area can be changed to accommodate different PC models by changing the cassette.

To explain Figure 5 in detail, this is an example of a combination for expressing sequence conditions, and serves as reference circuit information that allows operators to program various PCs in a unified format. be. In the same figure, it _n is the input condition,
C _t-1 , m indicates the connection condition between input conditions, and θ _t indicates the output condition. Specifically,
i _t m, C _t-1 , m indicate the contact state of the relay, such as normally open or normally closed, and θ _t indicates the coil of the relay. The contents of these conditions are determined by inputting information from the keyboard section.

In this way, the present invention provides the programmer body 2 with
Insert and connect the dedicated information exchange cassette 1 to each model of PC and insert the ROM into the electrical circuit of the programmer.
By electrically connecting 7, control is transferred from the system control program area D1 to the information exchange program area D5, and the unified reference circuit information (Fig. 5 is converted into a program corresponding to each PC) Programs sent to a PC or read from a PC are converted to reference circuit information and displayed on the display.
This allows you to program your PC.

Note that the programmer of the present invention is not limited to the one shown in FIG.
Of course, embodiments using a cathode ray tube (cathode ray tube) as a display, or a handy graphical display (liquid crystal, etc.) as shown in FIG. 7 may also be used.

With the above-described functions and effects, the present invention allows a single programmer to be used as a shared device for different types of PCs by unifying its operating procedures by simply exchanging the information exchange cassette of the programmer. It is possible to reduce the cost burden of having various programmers in a factory with different types of PCs, as well as to reduce the erroneous operations that tend to occur because the operating procedures of various programmers are different, and the time required to repair such errors.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the programmer of the present invention, Fig. 2 is a perspective view of the inside of a cassette for information exchange, Fig. 3 is a block diagram of the internal configuration of the electric circuit of the programmer, and Fig. 4 is a diagram showing the address space area. , FIG. 5 is a diagram showing reference circuit information, and FIGS. 6 and 7 are diagrams showing other embodiments. 1...cassette, 2...programmer body, 3...
...Keyboard, 5a, 5b...Connector, 7...
ROM.

Claims (1)

[Claims] 1. A single program input/output device main body shared by multiple types of programmable controllers, and a fixed storage device provided for each model of the programmable controller and removably connected to the program input/output device main body in the form of a cassette. Each of the fixed storage devices includes information for converting reference circuit information uniformly set in the program input/output device into a program corresponding to each programmable controller, and converts a program of each programmable controller into the reference circuit information. A general-purpose program input/output device comprising an information exchange unit that stores information and assists information exchange between a programmable controller and the program input/output device main body.