JPS59151203A - Programming device of programmable controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to control of key operations and display contents of a programming device for a programmable controller (hereinafter abbreviated as PC).

In recent years, PCs have become increasingly polarized into two categories: those toward smaller size and lower prices, and those toward higher functionality and multifunctionality. Even if a PC is developed for the latter purpose, it is desired that the programming operation be easy, the display be easy to understand, and the program be able to be programmed without errors.

Initially, PCs were not applied to relatively limited fields where programming with simple instructions suitable for sequence control would be sufficient to control the subject.

However, in recent years, technological innovations such as the advent of microprocessors have made it possible to realize low-cost PCs that can perform numerical calculation functions and data processing functions at high speed, and the fields of application of PCs equipped with these functions have expanded. It's coming.

By the way, as PCs become more sophisticated, naturally 1) C
The number of executable commands will also increase, and even in a programming device based on a PC programming system, this will result in an increase in the number of push buttons and switches and a complicated display content.

The key human resources for programming devices to deal with this tendency are as follows.

(1) Provide as many key switches as the number of instructions that the PC has.

(2) Add a shift key to the key switch to create an L-stage shift/down-stage shift, and reduce the number of keys to half the above number.

(3) Dedicated keys for frequently used basic commands are provided, and keys for other commands are operated by the shift operation described above.

(4) Equipped with a dedicated key for frequently used basic commands, other numerical calculations and data processing commands are expressed as F(JN), and the commands are treated as this FUN number (for example, the Kaji command is F(JNlo). etc).

Note that although the command is expressed as "FUN j" here, it may also be called as EM, etc. Also, the following can be considered as a method of displaying these commands.

(5) Provide display lamps equal to the number of instructions that the PC has.

(6) A display device capable of displaying alphabets, kana characters, nine figures, etc. will be adopted to display a variety of commands.

On the other hand, programming devices are generally small and light.

Considering the above-mentioned points, it has become common for modern PCs to use one command word (for example, FUN) for commands other than sequence basic commands, and to express the function using this number. For key human power, the above-mentioned item (4) has been adopted, and for display devices, the above-mentioned item (6) has been adopted.

By the way, when we analyze the command system of these PCs, we find the following two points.
It can be divided into

(7) Thanks to improved instructions, all instructions can be executed in one step/
The command system is such that there is only one command.

(8) Use an instruction system in which the operation can be completed with one instruction.

However, it is one to several steps/one instruction.

The instruction system (7) has a feature in that each arbitrary program step is a single instruction word. This is a measure to prevent the PC from running out of control] - and maintenance measures 1)
It has soto and can easily function as a programming device. On the other hand, for example, several instructions are required to add numerical values, which reduces the calculation speed, makes the program complicated, and makes programming errors such as forgetting the program easy to occur. Furthermore, if the functions that a PC should have in the future cannot be expressed by one step/one instruction, it may not be possible to easily add these functions as instructions.

The instruction system (8) above is suitable for high-speed calculations, and has the advantage that calculations are completed for each instruction, and that extended instructions can be provided relatively easily in the future. Due to inexperience of the programmer due to infrequent use, it is easy to forget or make a mistake in specifying the address to be operated on. For example, 4 steps/1 instruction may be mistakenly
If only words are written, it may cause the PC to run out of control. Furthermore, notifying users of writing errors by the blockraming device every time they occur will lead to a decrease in operability.

When programming a PC that has a basic sequence instruction group and an extended instruction group (numerical calculation instructions, data processing instructions, etc.), the present invention allows easy program operation in the writing operation of the extended instructions as well as that of the basic sequence instructions. The purpose is to provide a programming device whose display contents are easy to understand and which prevents erroneous writing.

The purpose of this invention is to set a common instruction key for a group of extended instructions, express the extended instruction using this instruction key and a numerical value, and to specify the common name and number of steps for each extended instruction. This is achieved by providing an information table consisting of the type of data accompanying this command, etc., and controlling key operations and display by referring to this information table during programming operations related to the extended command.

The present invention has sequence basic instructions and extended instructions (numerical calculation instructions, data processing instructions, etc.), and the extended instructions are one
This invention relates to a PC programming device that requires several steps/one instruction, and the present invention will be explained in detail based on an embodiment of the invention below. Fig. 1 is an internal block diagram of a PC and a progeramic device. The blockraming device 2 is connected by a connecting cable 3 via respective communication interfaces 15 and 25. The programmer writes a program into the user program memory 12 in the PCl using the blockraming device 2, and this program is stored in the system memory 13.
The program is executed by controlling CP[Jll,
The calculation results are exchanged with the outside by the input/output module 14. Blockraming device 2 is controlled by CPU 21 using a program in system memory 22 .

The programmer creates a program while operating the keyboard 23 and monitoring the display 24. The program is written to the user program memory 12 in the PCl through the connection cable 3.

FIG. 2 is an external view of the programming apparatus described in FIG. 27 is a 16-digit, 2-line dot display capable of displaying alpha characters, kana characters, numbers, or figures, and 28 is a keyboard input device.

3 and 4 show other types of instructions that can be executed by this PC. FIG. 3 shows basic sequence instructions, and FIG. 4 shows extended instructions such as numerical calculation instructions and data processing instructions. As shown in Figure 3, the sequence basic commands are 5TR (start of logic, storage of intermediate results of logic), STRNOT (start (negation) of logic, storage of intermediate results of logic), and AN.
D (logical product), AND NOT (logic W negation)
, OR (it & Riwa), ORNOT (Iau
Il! AND 8TR (logical product with intermediate result).

ORSTR (logical sum with intermediate result), 0UT (output to external or internal), TMR (timer operation), C
There is NT (counter operation). Further, as an extended instruction, as shown in FIG. 4, FUN 00 (data transfer).

FtJN 01 (dataset), FIJN 0
2 (data exchange), FUN 03 (BCD → binary conversion), FUN 04 (binary → BCD)
Conversion), FUN 10 (Additional.

FtJN 11 (subtraction), FUN 12 (comparison), FUN 13 (logical product of 8-bit data),
FUN 14 (logical sum of 8-bit data), F
tJN 40 (end of blockrum), FUN 4
6 (declaration of operation after momentary power outage), etc.

The difference in format between sequence basic instructions and extended instructions is that in the former, the operation target is a bit address, 1 step/1
(However, in the TMR and CNT instructions, the setting value comes after the instruction, so there are two steps), whereas in the latter, the object of operation is a byte address or an immediate value, and the number of steps differs depending on the instruction.

In other words, in the case of extended instructions, one instruction includes N (numeric value),
S (source address), D (tisteination)
address), so most of the steps are 3 steps (FUN
40, excluding FUN 46).

In addition, all extended instructions are expressed by FUN numbers, and each FUN number has a common name (MOV
, ADD, etc.).

The number of steps for each instruction is shown in FIG. As is clear from FIG. 5, most of the basic instructions have one step, whereas most of the extended instructions have three steps.

FIG. 6 shows an address expression method for the relay area (internal memory) inside the PC. The input/output relay is an area where external input/output signal states are written, the auxiliary relay is an area that is used to receive and pass the intermediate results of sequence calculations separately from the input/output relay, and the latch relay is backed up by a battery. This area is used to store the state immediately before the control power is turned off even in the event of a power outage.The timer/counter is an area used when creating a timer/counter by a program, and the register is used when data is processed in bytes. This is the area used. When specifying bytes of timer counters and registers, the addresses other than the most significant digits are expressed in octal.

The address when specifying the timer counter bit is time (
This indicates an up contact (count), and is expressed with ゛rM几, CNT in front of it to avoid duplication with other addresses.

FIG. 7 shows an example of the display of the display device according to the present invention, and (a)
The 0213 step of the program is FUN 02 (E
CHG) command, (b) is 02] 4 steps are FUN O2Q) S data, (C1 is 0215)
Indicates that the step is F [JN02 (7) Df-1. Immediately after writing 1i”tJNO2 to 0213, S of FUNO2 is written to step 0214 as shown in FIG. 7(b).
The data is 000 (the first byte address of the turnout relay), and 1) 000 is automatically set to 1 in the 0215 step. Then the programmer will write 0
214 Step 0215 Step specifies the specified target byte.
Write the address. The 71st M1 (C) is an example in which 9000 is written as the target byte address.

In the present invention, the display of the FUN command can be updated and written by operating the keyboard 23 shown in FIG.

A FUN information table is provided in the system memory 22 of FIG. 1 for reference and processing by the internal system block when inserting or deleting data. This F U
An example of the N information table is shown in FIG. Figure 8F,
ll'l is an overall diagram of the FtJN information table, and information tables 'L'', , T for each FtJN number are shown.
n to 'P46 are provided. The structure of each information table is shown in FIG. 8 (hl). As shown in FIG.
Byte number area Tn2. The number of characters (number of bytes) area Tn3 for the common name of FUN, the area T for the common name of FUN,1. 4. Fu of FUNn.

It is composed of each item in the type area 'I'ns of 7'-ta which accompanies the lCockram step number area Tni + FUNn instruction.The types of data accompanying the FUNn instruction are as shown in Figure 4. There are N (numeric value), S (source address), and D (destination address), and the corresponding data written to area 'I'ne is in the form shown in FIG. 9. That is, S (source address), D (destination address), N
(number) respectively type °°1” II 21
1. "II, n 4" is assigned. Furthermore, the possible range of data S, I) is the range specified in Figure 6, and the possible range of type 3 data N is 1.
In order to express it in bytes, it becomes 2 digits (BCI), and the possible range of type 4 data N is F'UN4 in Figure 4.
6. Examples of such information tables for FUN 01 and FUN 10 are shown in FIGS. 10(a) to 10(b). Figure 10(a)
, 0)), the common name of pUNn is written in JIS code, and the data type area Tns associated with the FUNn instruction is 3'', respectively, based on FIGS. 4 and 9.

11°" and 1", °2" are written. By using such an information table, for example, FUNol
is commonly known as MVI, because it is a 3-step instruction with an immediate value and S data, and FUNlo is commonly known as ADD.

It can be seen that the 3-step instruction involves S and D data. Furthermore, using the relationship shown in FIG. 9, data is checked and the display is updated when the keypad is operated during step display.

Furthermore, when performing each process with reference to the FIJN/h' report table shown in FIG. Area (](A
, M). This memory flag “I” ONl
"LG" indicates what kind of data is being displayed. In the case of II Q 11, it is FUN.
If the command is "1" while other commands are displayed, F'UN command table 7
If the value is "2" during the J command, it is expressed as "l" during the data display following the N command.Then, the storage flag FLINi"L (if the existence of
If the data following the N command is not in the table, the type of data following the FUNn command is detected from the F(JN information table shown in FIG. It is stored in the area FUNiFM within.

Next, the system block diagram in the programming device that performs each process with reference to the FUN information table i shown in FIG. 8 will be explained based on the flowcharts shown in FIGS. 11 fa) to J). According to this flowchart, among the key human powers, "step +", "step -", and "insert"
, "Delete", "Write" operations, and when changing the display of the F[JN command and subsequent steps, the FUN information table is referred to. Although the timer command and counter command are two-step commands because the set values continue, in this flowchart, for convenience of explanation, they are treated as one-step commands like other sequence basic commands.

First, in FIG. 11(a), it is determined whether there is key power or not (step S1), and if key power is present, it is "step + 1 key (step 82),"
``Step'' key (step s3).

Is it the "insert" key (step 84), the "delete" key (step s5), the "write" key (step 86), or is the data following the FUN command being displayed; FUNFLG: 2 (step S7), “
FUN” key (step S8).

It is sequentially determined whether the PUN command is being displayed or whether FUNF'LG=1 (step 89). If both are "NO", the display other than the FUN command is updated (step 810) and the process is terminated, and if any is "Yl;, S"°, the corresponding processing is performed. Proceed to.

First, “Step Master” key human power or “Step Master”
If the key is manually operated, proceed to step 811 or step 812 in Figure 11 (1)) and add 1 to the program step and call the corresponding program step, or subtract 1 from the program step. and call the program of the corresponding program step. Then, it is determined whether the called program step is a FUN instruction (step 513), and if it is an FtJN instruction, then it is determined as shown in FIG. 11 (step 513).
The process advances to step 814 shown in C) and stores the FUN command being displayed, that is, FUNi! 'LG=1, then FU
From the number of the N command (Step 815), F[Refer to the JN information table and check the common name of F[JN],
Display the common name of i'[JN (step 516) and end the key manual processing. The display at this time is shown in Figure 7 (
It will be like a). In step 13 of FIG. 11(b), if the instruction is not a FUN instruction, it is determined whether the data follows an L'UN instruction (step 51).
7) If the answer is "NO", press the F (not displaying commands other than JN, i.e., FUNFLG = O step 518), 61, ■ change to display (step 519) key. End manual processing. If step 81
If YES'' in 7, remember that the data follows the FUN instruction, that is, FUNFL()
= 2 (step 520), then read the block diagram in one direction until the F[JN instruction appears (step 52)
1), from number 41'i of the read FIJN instruction
Check the data type by referring to the NIPt information table and store it in F[JNiFM (step 522).
. Then, in step S23, the data is converted into a predetermined display according to the JNiFM, and the key manual processing is ended. 3. The display at this time is shown in Figure 7 (b)
, as shown in (C).

In Figure 11 fal, if the 'insert' key is manually operated, proceed to step 824 in Figure 11 (d) and press FUN.
Determine whether it is a command or not. And “YES”
”, refer to the FUN information table based on the FUN instruction number, create the machine language of the program step length of this instruction, and insert it into the step (step 525). In step 824, If the answer is "NO", it is determined whether the data follows the FUN instruction (step 826), and if the answer is "NO", the instruction currently being displayed is inserted into the program step being displayed. Step 527), the key manual processing ends.

In step 826, if the answer is "YES", the key manual processing is ended without doing anything. In other words, FUN
Inserting a take following the command is prohibited and the "insert" key is ignored.

In FIG. 11(a), if the ``delete'' key is manually operated, proceed to step 828 in FIG. 11(e).
[Determine whether it is a JN instruction. "YES"
If so, refer to the FUN information table based on the FUN instruction number, search for the program step length of this instruction, and delete it from the step (step 529). Then, as a result of the deletion, the program that has been brought forward is read out (step 530), and the process advances to step S13 in FIG. 11(b). If "NO" in step 828, it is determined whether the data follows the FUN command (step 831), and if "NO", the PC program of the program step being displayed is deleted. Next step 832), the process proceeds to step 830. In step 831, if YES1', the key manual processing is immediately terminated.

That is, deletion of only the data following the FUN command is prohibited and the operation of the deletion key is ignored.

In FIG. 11(a), if there is manual power for the "write" key, the process proceeds to step 833 in FIG. 11(f) and the FU
It is determined whether it is an N command or not. If the answer is "No", it is determined whether the data follows the F'UN command (step 83.i), and if the answer is "Yl", the data being displayed is written to the step (step 83.i). 5
35) End the key manual processing. In step 834, if the answer is ``NO1'', the actual step of the PC of the step is read (step 536), and then it is determined whether the program in this PC is a FUN instruction (step 837''). ).

If ``NO'', the command being displayed in the step is written (step 838), and the key manual processing is terminated.If ``YES'' in step 837, F''U
From the number of N instruction, F , key to end manual processing. Also, in step 833, YES”
Then, proceed to step 841 in FIG. 11(g),
Read the actual step of the PC for the step. Next, it is determined whether or not the read Cram 11] in the PC is a FUN instruction (step 842), and if "NO", the program in the PC of the step is deleted (step 843). FUN from the displayed FUN number
With reference to the information table, a machine language for the program step length of this instruction is created and inserted into the step (step 844), and the key manual processing is completed. Step 84
2, if 'YES', the FU in the PC
The program step length of this instruction is retrieved by referring to the FUN information table based on the number of the N instruction, and after deletion from the step (step 545), the process proceeds to step 844.

In FIG. 11(a), in step S7 FUN'F
, if it is determined that LG=2, the process proceeds to step 846 shown in FIG. 11(h), where the key power is checked according to the contents of FUNiFM and the display is updated so that it is set within the range shown in FIG. 9. , key to end manual processing. In addition, in Figure 11 fa), if there is a "FtJN" key (step S8), the process proceeds to step S47 in Figure 11 (I), displays II FUN nW, and changes the common name of this number to E. 'Search and display from the UN information table. Furthermore, in FIG. 11(a), step S9
Te FUNI! 'If it is determined that LG=1, then Fig. 11 (
Proceeding to step S48 shown in C, a judgment is made as to whether or not it is numerical manual input, that is, whether or not the FUN number is changed.If the answer is ``YES'', the specified FUN
The common name is displayed by referring to the FUN f# ll+ table using the number (step 849), and the key manual processing is ended. If "No" in step 848, the process advances to step S10 in FIG. 11(a).

As a modification of the embodiment described above, for example, FU
It is also conceivable to display all the FUN numbers and addresses to be operated on when writing the N instruction, and to modify the program when the programmer specifies all of them. Of course, in this case as well, the FUN information table in FIG. 8 is referred to when updating and writing the display.

According to the present invention, a basic sequence instruction group and an extended instruction group (
consists of numerical calculation instructions, data processing instructions, etc.),
In a PC that has an instruction system that takes one instruction or several steps, the programming device that programs this has an information table for each extended instruction, and when updating the display or writing of the extended instruction, Refer to the table to display the common name of the extended instruction (for example, ADD for addition, 80B for subtraction, etc.), classify and check the operation target address,
By providing a programming device that automatically checks the scope of enthronement, displays content that is always meaningful as commands, and is designed to prevent programmer errors as much as possible, even high-performance PCs can be used in the same way as conventional PCs. It can be programmed with ease.

[Brief explanation of drawings]

Fig. 1 is an internal block diagram of the programmable controller and hyphrogramming device, Fig. 2 is an external view of the programming device, Fig. 3 is an explanatory diagram of the sequence basic commands executed by the programmable controller, and Fig. 4 is a diagram of the programmable controller. An explanatory diagram of the extended instruction to be executed,
Fig. 5 is an explanatory diagram of the number of steps for each instruction, Fig. 6 is an explanatory diagram of the address assignment of the internal relays of the programmable controller, Fig. 7 is a diagram showing an example of the display on the display, and Fig. 8 is an explanatory diagram of the address assignment of the internal relays of the programmable controller.
Figure 9 shows the configuration of the UN information table.
An explanatory diagram of the range of data following the N command. FIG. 10 is a diagram showing a specific example of the FUN information table, and FIG. 11 is a flowchart of the system block diagram in the block ramming device. DESCRIPTION OF SYMBOLS 1... Programmable controller, 2... Blockraming device, 11.21... CPU, 12...
User program memory, 13.22... System memory, 14... People output module, 15.25...
Communication interface, 23...Keyboard, 24...
・16-digit 2-line display, 3...Connection cable. 23-? 3 Dark talent 41￥1 f518O f6 Figure 1+ (CI O) Figure (a la tbrT 8 Figure?q Flash (of tb) Ya 10 Figure 4-, 'J7fl'L''#N4'ノ Ta1・
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Claims (1)

[Claims] 1) An instruction consisting of a sequence basic instruction group and an extended instruction group, each instruction of which is one or several steps, and a display that displays the contents of the program, and a basic instruction word provided for the sequence basic instruction. key, one extended command word key provided in common for each extended command, operation command keys used for programming operations, and for each extended command its common name, number of steps, and data type associated with the command. and an information table storing information such as, each extended command is represented by the extended command word key and a number,
When handling the extended A15 command when operating the operation command key, refer to the information table and select the key operation and O.
A programming device for a programmable controller, characterized in that it controls display on the display device.