JP2880330B2 - Programming device for programmable controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable controller programming apparatus for creating or editing a sequence program stored in a user program memory of a programmable controller in correspondence with a display screen.

[0002]

2. Description of the Related Art Generally, a programmable controller is provided with a user program memory for storing a user program which is a sequence program. And
Generally, a sequence program stored in a user program memory is created, edited, and stored by a programming device. For this reason, the programming device
A program memory having the same configuration as the user program memory provided in the sequence controller is provided.

When creating or editing a user program of a programmable controller with this programming device, first, the contents of the user program memory of the programmable controller are transferred to the program memory in the programming device. Then, after the work of editing the contents of the program memory is completed by the programming device, the edited contents are collectively transferred to the user program memory of the program controller again.

On the other hand, the programming device is designed to be able to execute the editing by designating the contents of the built-in program memory as described above, as well as to execute the editing by designating the user memory of the programmable controller. ing. Generally, the former is called offline mode or offline programming, and the latter is called online mode or online programming.

Japanese Patent Application Laid-Open No. 56-11502 can be mentioned as a reference for this kind of technology.

[0006]

The above-mentioned prior art does not take into consideration the simultaneous editing of the contents of the user program memory of the programmable controller and the contents of the program memory of the programming device. In order to make the same memory, it is necessary to transfer the contents of the user program memory of the programmable controller to the program memory of the programming device, edit the contents, and then transfer the contents again to the original user program memory. Was.

For this reason, especially when the operator executes the debugging of the sequence program, the above-mentioned transfer operation must be performed every time the program is changed, so that extra operations and the waiting time for the transfer processing are forced. I was

Further, in the programming in the online mode, since the contents of the user program memory of the programmable controller are edited, if the contents of the user program memory of the programmable controller are forgotten to be transferred to the programming device after the editing,
There has been a problem that the memory contents of the two do not match.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a programming device for a programmable controller which can always make the two memories the same without having to collectively transfer the memories after the editing operation. Another object of the present invention is to eliminate memory inconsistency that occurs after the completion of online programming.

Another object of the present invention is to provide a programming device for a program controller capable of reducing a time required for a memory content transfer process when an operator performs a debugging operation of a sequence program of a programmable controller. It is in.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object , the present invention provides a method for controlling a user in a programmable controller.
Create a sequence program in the program memory or
Online mode for editing and programming device
Sequence memory in program memory
Has offline mode to create or edit programs
Programmable controller programming device
In offline mode, online mode, and both
Online parallel editing mode for editing memory in parallel
Each mode is configured to be selectable, and the mode selected at startup is selected.
Mode will continue to function in that mode until the mode ends.
It is characterized by continuing .

In a preferred embodiment, the program
Select the online parallel mode when starting the
Responds to the selection of the memory in the programmable controller.
The sequence program and the programming device
Executes comparison and comparison of the sequence program of Mori
If matches, execute online parallel editing mode,
If they do not match, a warning is displayed to the operator, or
A storage content comparing means for performing a display prompting a matching operation is provided.
It is characterized by becoming .

[0013]

[0014]

According to the above, the edited contents are immediately reflected in the user program memory in the programmable controller and the program memory in the programming device, thereby preventing the occurrence of trouble due to a mismatch between the memories. Can be.

Also, a programmable control before editing
Since the operation of matching the sequence program of the memory in the memory with the sequence program of the memory of the main body of the programming device has been completed in the initial processing, during editing, only the changed contents of the memory are transferred. The time required for the transfer process can be shortened.

[0016]

FIG. 1 is a diagram showing a state of an initial screen of a programming device in this embodiment. When the programming software is started by the programming device, an initial screen of FIG. 1A for selecting a mode function is displayed. Here, the selection number "1" is an off-line mode, that is, a mode in which the contents of a program memory incorporated in the programming device are designated and editing is performed. The selection number “2” is an online mode, that is, a mode in which a user program memory of the programmable controller is designated and editing is performed. The selection number "3" is a mode newly added according to the present embodiment. The user program memory in the programmable controller and the program memory of the programming device are designated, and the two memories are edited in parallel. This mode is called a new online mode on the display screen. When the new online mode "3" is selected on the initial screen shown in FIG. 1, the programming device stores the program stored in the user program memory in the programmable controller.
It is checked whether the sequence program matches the sequence program in the program memory of the programming device main body, and if they match, the screen shown in FIG. 1C is displayed, and the programming processing in the new online mode is performed. To start. If they do not match, the screen shown in FIG. 1B is displayed and the operator is inquired of the memory transfer direction for the above-mentioned match.

In FIG. 1B, when the selection number "1" is selected, the user program in the programmable controller is transferred to the programming device, and the storage contents of the user program memory in the programmable controller and the programming device The stored contents match the stored contents of the program memory inside the program memory, and then the screen display of FIG. In FIG. 1B, when the selection number "2" is selected, the contents of the program memory in the programming device, that is, the sequence program, are transferred to the programmable controller, and the contents of the two are matched. Thereafter, the screen is displayed as shown in FIG.

FIG. 2 is an overall configuration diagram of an apparatus showing an embodiment of the present invention. In this figure, PGM indicates a programming device, and PC indicates a configuration of a programmable controller. A programming device PGM is a system memory for storing a control program for programming;
A main memory MM as an internal storage device for storing sequence programs and data, a keyboard KB as an input device, a display device CRT, an external storage memory EM as an external storage device, a serial interface for transmitting or receiving a created sequence program IF
And a central processing unit CPU2 for controlling the entire programming device PGM. The programmable controller PC receives the sequence program transmitted from the programming device PGM or transmits the sequence program to the programming device PGM, an interface IF1, a user program memory 2 for storing the received sequence program, a control program for sequence control. Memory SM for storing
1, a central processing unit CPU1 for executing a user program stored in a user program memory 2 based on the contents of the system memory SM1, and an input / output unit IO for exchanging data with a control target.

A program memory corresponding to the user program memory 2 for configuring a user program is allocated to the main memory MM in the programming device PGM. Further, an editing area is allocated for editing a user program.

In FIG. 1, when the new online programming is selected, the interface IF is stored in the user program memory 2 in the programmable controller PC.
The contents are transferred to the program memory 1 in the programming device PGM via the program memory 2.

Next, the start of online processing is started, the editing circuit in the user program memory 2 is transferred to an editing memory area other than the program memory 1 of the main memory MM, and a circuit changing operation is performed. The contents of the steps changed by the circuit changing operation are transferred to the user program memory 2. Then, the same transfer contents are executed for the program memory 1, and the step change operation in one circuit is completed. If another step is changed in the same circuit, this series of operations is repeated.

FIG. 3 is a flowchart showing a process newly added according to the present embodiment, which is started when item number 3 is selected in FIG. In this flowchart, steps 3a, 3b, 3
Steps c and 3d constitute storage content comparison means.
.., 3k constitute storage content updating means. When this processing is started, first, in step 3a, a matching state between the storage content of the user program memory 2 of the program controller PC and the program memory 1 in the programming device PGM is detected. Here, if both memory contents do not match, step 3
In step b, a message is displayed on the display screen indicating that the two memories do not match. Then, a screen for prompting the user to select a data transfer direction for matching the two memories is displayed, that is, the screen shown in FIG. 1B is displayed. Here, if the user selects "1", the stored contents are transferred from the user program memory 2 of the programmable controller PC to the program memory 1 of the programming device PGM in step 3c. Thereby, the contents stored in the program memory 1 of the programming device PGM match the contents of the user program memory 2 of the programmable controller PC. If the user selects "2" in step 3d, the stored contents are transferred from the program memory 1 of the programming device PGM to the user program memory 2 of the programmable controller PC in step 3d. Thereby, the contents stored in the program memory 1 of the programming device PGM match the contents of the user program memory 2 of the programmable controller PC. Step 3
After execution of step c or step 3d, the processing is performed in step 3
e. If the contents of both memories 1 and 2 match in step 3a, the process proceeds to step 3e without executing steps 3b, 3c and 3d.

In step 3e, a process for starting the online mode according to the present embodiment is executed. As is well known, a sequence program generally performs its editing operation in units of one circuit. This embodiment also shows a case where editing is performed in units of one circuit. In step 3f, the user is requested to input a circuit number to be edited or the like, and in response to a user input from the programming device PGM, one target circuit is pre-allocated to the main memory 4 of the programming device PGM. To store. In the following step 3g, the contents of the circuit in this storage area are edited for one step in the circuit based on the editing operation of the user. When this is completed, step 3h
Then, the edited contents are transferred to the user program memory 2 of the programmable controller PC.
In i, the same edited content is transferred to the program memory 1 of the programming device PGM. In step 3j, it is determined whether or not the editing work of the circuit has been completed, and if not, the process proceeds to step 3g and the above process is repeated. If so, the process proceeds to step 3k.
It is determined whether or not the editing work is to be ended. If not, the process proceeds to step 3f, and the above process is repeated.
Then, if it is to be ended, the above editing work is ended.

Details of the internal processing of online programming in the above embodiment are shown in schematic diagrams in FIGS.
FIG. 4 shows a process when the number of steps after the circuit editing is increased, and FIG. 4A shows a state before the data processing after the editing, which is performed by the user program memory 10 in the programmable controller PC. The data of one circuit is transferred to the memory 9 in the programming device PGM, and the changed step of one circuit is the number of steps 7, which indicates that it is in the programming device 9. The hatched portion is the number of steps 11 that has increased after editing.

FIG. 4 (b) shows the step transfer process of the increment, and shows the process of transferring only the increased step portion to the user program memory 10 and the memory 8 in the programming device PGM. In this case, before the transfer, the transfer process is performed by shifting the number of steps by the increment in advance. A transfer process 15 is added to general online programming.

FIG. 4C shows the transfer process in the remaining steps of one circuit. Step 1 left of one circuit
2 is transferred to the user program memory 10 and the memory 8 in the programming device PGM. A transfer process 15 is added to general online programming. 4A, 4B, 4A, and 4B.
It is performed in the order of (c).

FIG. 5 shows the processing when the number of steps after circuit editing is the same, and FIG. 5A shows the state before data processing after editing. The edited step 13 becomes a substantial transfer step. FIG. 5 (b)
This figure shows the process of detecting the start address of the transfer step, and compares the before-change circuit memory 14 in the programmable controller PGM with the memory 7 and compares the mismatched address with AD.
R ′. This is the transfer start address. FIG.
(C) shows the process of detecting the final address of the transfer step, and finds the number of matching steps 16 from the last step of the circuit. Substantial transfer step 13 includes 7-16-
(ADR'-ADR). FIG. 5D shows the step transfer process, which is obtained by adding 16 to the process of transferring 13 which is not the online programming to 8. The flow of the processing in FIG.
(B), FIG. 5 (c), and FIG. 5 (d).

FIG. 6 shows the processing when the number of steps after the circuit change is reduced, and FIG. 6 (a) shows the state before the data processing after editing. 15 is the reduced step number. FIG. 6B shows deletion of a program corresponding to the number of reduced steps, which is a processing in which deletion processing of 15 which is not included in the online program is added. FIG. 6C shows the transfer of the change circuit, and transfers the change circuit 16 to the memories 10 and 8 reduced by FIG. 6B. This is a process in which 15 which was not in online programming is added. 6 is performed in the order of FIG. 6A, FIG. 6B, and FIG. 6C.

As described above, according to the embodiment, the edited contents are automatically and immediately transmitted to the programmable controller PC.
Program memory 2 and programming device P
Since the data is reflected in the program memory 1 in the GM, it is possible to prevent a trouble due to a mismatch between the two memories.

Also, a programmable control before editing
Since the operation of matching the sequence program of the memory in the PC with the sequence program of the memory of the main body of the programming device PGM has been completed in the initial processing, during editing, only the contents of the changed portion of the memory are stored. Transfer may be performed, and the time required for the transfer process may be reduced.

[0031]

As is apparent from the above description, according to the present invention, a function having both on-line and off-line functions can eliminate a memory transfer operation and reduce the time required for program debugging. .

Further, it is possible to prevent trouble due to memory mismatch.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a display example of a display screen of a programming device according to an embodiment of the present invention. .

FIG. 2 is a block diagram showing a configuration diagram of a programming device and a programmable controller according to an embodiment of the present invention. .

FIG. 3 is a flowchart of a process according to an embodiment of the present invention.

FIG. 4 is a schematic diagram showing processing when the number of steps after a circuit change is increased.

FIG. 5 is a schematic diagram showing processing when the number of steps after circuit change is the same.

FIG. 6 is a schematic diagram showing processing when the number of steps after a circuit change is reduced.

[Description of References] 1: User program memory in programmable controller, 2: Program memory in programming device, IF1, IF2: Interface, MM: Main memory in programmable controller, 7: 1 Number of steps for circuit, 8: User before editing in programming device
The program memory 9: User in the programming device
The program memory, 10: Programmable control
User program memory before editing in the program, 11: number of steps increased after editing, 12: circuit after editing other than the increment, 13: step after editing, 14: before editing in programmable controller User program memory, 1
5: transfer processing, 16: edited program, 3a, 3
b, 3c, 3d: storage contents comparing means, 3e, 3f,.
3k: storage content updating means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-76906 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) G05B 19/04-19/05

Claims (2)

(57) [Claims] An online mode for creating or editing a sequence program in a user program memory in a programmable controller and an offline mode for creating or editing a sequence program in a program memory in a program memory of a main body of a programming device. Mode, the online mode, and the online parallel editing mode for editing both memories in parallel, so that each mode can be selected, and the mode selected at the time of startup has the function of the mode until the mode ends. A programming device for a programmable controller, characterized by continuing. 2. When the programming device is activated, the sequence program in the memory in the programmable controller is compared with the sequence program in the memory in the main body of the programming device in response to the selection of the online parallel mode. If there is a match, the online parallel edit mode is executed, and if there is no match, there is provided a storage content comparing means for displaying a warning or prompting the operator to perform a match operation. A programming device for a programmable controller according to claim 1 .