JPH05241619A - Programmable controller programming device - Google Patents

Abstract

(57) [Summary] [Configuration] A programming device 10 comprising means for creating or editing a sequence program for operating a programmable controller PC, and means for monitoring the operating state of the programmable controller, which are mutually connected via a network. Interface means 17, 21 connected to one of a plurality of programmable controllers connected to each other for inputting / outputting data, and means 18, 51 for accepting designation of a plurality of programming devices as request targets of monitor information. And means for requesting monitor information of the plurality of programmable controllers to the connected one programmable controller according to the designation, and transfer from the designated plurality of programmable controllers. Received monitor information And means 52 for pay, and means 15 for displaying the programmable controller of the monitor information of a plurality which is the received stored in the same display screen. [Effect] Since the information necessary for debugging can be grasped only by looking at one screen, the efficiency of system debugging is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programming device capable of easily performing phenomenon analysis during system debugging in a system in which a plurality of programmable controllers (PC) are connected via a network.

[0002]

2. Description of the Related Art As described in the Hitachi Programmable Controller HIZAC H Series Graphic Programming Console Manual (H-PE03-1), a conventional PC programming device is a system debug system for a system in which a plurality of PCs are connected via a network. A PC to which a programming device is connected when displaying monitor information, time chart trace information (contact information of monitor information of multiple programmable controllers or change history of coils), program information, etc. In addition, a system has been adopted in which only one of the PCs connected to the network is displayed.

[0003]

In a system in which a plurality of PCs are connected via a network, a plurality of Ps are usually used.
Between C, synchronous control is performed such that when a certain contact is turned on, they all start operating simultaneously, and interlock control such that while one PC is operating, other PCs do not operate. , Work in relation to each other. For this reason, it is necessary to see the relationships between them when performing system debugging.

In the above prior art, when looking at the contact between the PCs connected to the network and the coil,
Since only the information of one PC can be displayed at a time, there is a problem in that when viewing information of two or more PCs, it is necessary to switch screens. Moreover, since the screens are switched, there is a problem that the mutual relationships cannot be seen in detail.

An object of the present invention is to make it possible to grasp the relationship between a plurality of PCs connected by a network by only looking at one screen, and in a system in which a plurality of PCs are connected by a network, at the time of system debug. It is to provide a programming device capable of facilitating the phenomenon analysis of.

[0006]

A programming device for a programmable controller according to the present invention monitors the operating state of the programmable controller and means for creating or editing a sequence program for operating the programmable controller that executes the sequence control function. A programming device comprising:
Interface means connected to one of a plurality of programmable controllers interconnected via a network for inputting / outputting data, means for accepting designation of a plurality of programming devices as request targets of monitor information, Means for requesting monitor information of the plurality of programmable controllers to the connected one programmable controller according to designation, and receiving and storing monitor information transferred from the plurality of designated programmable controllers And a means for displaying the received and stored monitor information of the plurality of programmable controllers on the same display screen.

[0007]

According to the present invention, in a system in which a plurality of PCs are connected by a network and operate in association with each other, an arbitrary plurality of Ps connected to the network are connected.
The state of C can be displayed on the same screen.
Since the relationship between Cs can be grasped, the phenomenon analysis at the time of system debug becomes easy.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a block diagram of a programmable controller (PC) 1 according to an embodiment of the present invention and a programming device 10 connected to it. The PC 1 has an input / output port (I / I) provided between a CPU 2 that performs each arithmetic processing, a memory 3 that stores a sequence program, an interface (I / F) 4, and a control target (not shown).
O) 5 and. The programming device 10 has a P
A device for programming a sequence program to be stored in the memory 3 of C1, a CPU 11 for performing an operation,
Main memory 12, hard disk (HD) 13 and floppy disk (FD) 14 as external memory
And a display device (CRT) 15 for displaying a ladder program diagram of a sequence program to be created and edited, a keyboard 18, a printer 16, and an external serial interface (I / F) 17. This interface 1
7 is connected to the interface 4 of the PC 1 and the sequence program to be modified or edited is copied from the memory 3 of the PC 1 to the main memory 12 for modification or editing. The correction and editing results are displayed on the display device 15 as a ladder circuit diagram, printed out by the printer 16, and confirmed to have no bugs, and then written in the memory 3 of the PC 1.

FIG. 1 shows a system configuration and a display screen of a ladder circuit monitor according to an embodiment of the present invention.

In this system, PC1 to PC5
Up to five PCs perform sequence control, and these are connected to each other through the PC-to-PC network 20, communicate with each other, and operate while synchronizing and interlocking. PC1 to PC5 respectively include CPU1 to CPU
5 has been implemented.

One P connected to the network 20
C, for example CPU1 of PC1, connection cable 2
The programming device 10 can be connected via 1. In this state, in ladder circuit monitor mode,
The number of the CPU you want to monitor. And the circuit No. When is input from the keyboard 18 of the programming device 10,
The execution state of the sequence program is constantly read from the memory of the designated CPU via the network 20. Of the information, the specified circuit No. The part is displayed on the screen. In this way, the circuit monitors of a plurality of PCs can be performed on the same screen. In addition, in the example of FIG.
Circuit No. of CPU1. 1, 2 and the circuit number of CPU2.
50 and the circuit number of the CPU 5. The screen when 10 is monitored is shown.

Details of the example shown in FIG. 1 will be described with reference to the flow charts of FIGS.

Keyboard 18 of programming device 10
Then, the ladder circuit monitor mode is started (61), and the No. of the CPU to be monitored on one screen is displayed. And the circuit No. When (62) is input, the CPU No. is displayed on the memory of the programming device 10. And circuit No. A monitor designation table 51 composed of and is created (63). The memory of the CPU designated by this table 51 is accessed, and only the monitor data information is read from the memory (64,
65, 66). In this example, corresponding to the example of FIG.
The case of accessing U1, 2, 5 is shown. At this time, the CPU1 to which the programming device is connected is directly accessed, and the CPU2 and the CPU5 are
Each memory is accessed via the PC-to-PC network 20. Then, the monitor information table 52 is created based on the read monitor information (67). The created monitor information table 52 and the circuit number of the monitor designation table 51. In the display conversion unit 53, the designated circuit No. Is converted into ladder circuit information (68), and the ladder circuits for a plurality of CPUs are simultaneously displayed on one screen of the display device 15 (69).

The above processing is performed in the circuit monitor mode.
By constantly performing at high speed, it becomes possible to monitor the circuits of a plurality of PCs on the same screen.

FIG. 2 shows a display screen when the time chart trace monitor is performed in the above system configuration.

In the time chart trace monitor mode, the programming device 10 is connected to the CPU of one of the PCs connected to the PC-to-PC network 20 or to the CPU of a specific PC. When the signal name is input, the execution state of the sequence program is constantly read from the memory of the designated CPU via the network 20. Based on this information, the signal with the signal name is converted into time chart trace information. Information of each converted signal is simultaneously displayed on the screen. In this way, the time chart trace monitor of multiple PCs in real time can be performed on the same screen.

At this time, it is possible to start the time chart trace under the logical condition of the contact or coil designated by the user.

FIG. 3 is a screen display when a ladder program is edited in the above system configuration.

In the ladder program editing mode, the programming device 10 is connected to the CPU of any one or a specific PC connected to the PC-to-PC network, and the No. of the CPU to be edited is set in the ladder program editing mode. When is input, the sequence program is read from the memory of the designated CPU via the network, displayed on the screen, and is ready for editing. As a result, editing of ladder programs for multiple PCs is possible on the same screen.

FIG. 7 shows a display screen when the time chart trace monitor and the ladder circuit monitor are simultaneously performed in the above system.

In the time chart trace monitor mode, the programming device 10 is connected to the CPU of any one of the PCs or a specific PC connected to the network between PCs, and in the time chart trace monitor mode, the N of the CPU to be time chart monitored.
o. And the signal name, and further, in the ladder circuit monitor mode, the CPU No. to be monitored for the ladder circuit.
And the circuit No. Enter. In response to this, the execution state of the sequence program is read from the memory of the designated CPU via the network 20, the designated signal is converted from the information into the time chart trace information, and the designated CPU Designated circuit No. Monitor information is converted into ladder circuit information and displayed on the same screen of the display device 15. In this way, the time chart trace monitor of multiple PCs in real time,
The ladder circuit monitor can be displayed on the same screen.

As described above, not only is information on a plurality of PCs displayed on one screen at the same time, but different functions such as ladder circuit monitor, time chart trace monitor, and ladder circuit edit are combined to form the same screen. It can also be displayed above.

Incidentally, as shown in FIG. 8, conventionally, the contact information of the monitor information and the state of the coil are displayed in hexadecimal numbers (hexadecimal 4 digits) in 16-bit units. By applying it, it is also possible to simultaneously display the monitor information in hexadecimal display for a plurality of PCs on the same screen.

[0025]

According to the present invention, in a system in which a plurality of PCs are connected to each other via a network, monitor information, time chart trace information, and program information of a plurality of PCs are displayed on the same screen during system debugging. can do. Therefore, the relationship between the PCs connected by the network can be seen on one screen and can be grasped at a glance, so that the debugging efficiency is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a system configuration diagram and a display screen of a ladder circuit monitor according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a display screen when a time chart trace monitor is performed in the system configuration of FIG.

3 is a screen display when a ladder program is edited in the system configuration of FIG.

FIG. 4 is a configuration diagram of a PC and a programming device.

5 is a detailed explanatory diagram of the system of FIG. 1. FIG.

6 is a flowchart of processing in a ladder circuit monitor mode in FIG.

7 is an explanatory diagram of a display screen when a time chart trace monitor and a ladder circuit monitor are simultaneously performed in the system configuration of FIG.

FIG. 8 is an explanatory diagram showing a display screen for displaying the state of contacts and coils of monitor information in hexadecimal data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Programmable controller, 10 ... Programming device, 11 ... CPU, 12 ... Main memory, 13 ... Hard disk, 14 ... Floppy disk, 15 ... Display device, 16 ... Printer, 17 ... Interface part,
18 ... Keyboard, 51 ... Monitor designation table, 52 ...
Monitor information table.

Claims (7)

[Claims] 1. A programming device comprising: means for creating or editing a sequence program for operating a programmable controller that executes a sequence control function; and means for monitoring an operating state of the programmable controller, the programming apparatus comprising: Interface means connected to one of the plurality of programmable controllers connected to the I / O unit for inputting / outputting data, means for accepting designation of a plurality of programming devices as request targets of monitor information, and means for accepting the designation. And a unit for requesting monitor information of the plurality of programmable controllers to the connected one programmable controller, and a unit for receiving and storing monitor information transferred from the plurality of designated programmable controllers. , A programming device for a programmable controller, comprising: a unit for displaying the received and stored monitor information of a plurality of programmable controllers on the same display screen. 2. The programming device for a programmable controller according to claim 1, wherein the monitor information includes states of contacts and coils, and the states are displayed by a ladder circuit. 3. The programming device for a programmable controller according to claim 1, wherein the monitor information includes states of contacts and coils, and the states are displayed as hexadecimal data. 4. The programmable controller according to claim 1, wherein the monitor information includes states of contacts and coils, and the history of changes in the states of the contacts and coils is displayed on the same screen in real time. Programming equipment. 5. The programmable controller programming apparatus according to claim 4, wherein acquisition and display of the history of the time change are started according to a user-specified contact or coil logical condition. 6. The programmable controller programming apparatus according to claim 1, further comprising means for displaying program information of the plurality of programmable controllers on the same screen. 7. The programmable controller programming device according to claim 6, wherein arbitrary program information of a plurality of programmable controllers displayed on the same screen can be edited.