JPS5933504A - Sequence controller - Google Patents

Abstract

PURPOSE:To attain ease of debugging and adjustment of a program, by providing a control section converting the 2nd machine instruction applied with contact control information into the 1st machine instruction stored in a program storage section so as to designated forcedly the contact logic independently of other contact logics of the program. CONSTITUTION:The combination of symbols such as relay contact or coil is inputted from a program input section 1 and converted into a machine instruction train at a machine instruction converting section 2, and stored in a program storage section 5. The stored content is read out to a machine instruction inverting section 4, the machine instruction train is inverted into a relay sequence diagram form and displayed on a program display section 3. On the other hand, a desired machine instruction is extracted from the storage section 5 at an operation processing section 8, the operation is performed based on an external input signal from an input section 7 and outputted externally from an output section 9. Further, a machine instruction rewrite control section 6 is provided between the input section 1 and the storage section 5, and the 2nd machine instruction added to the contact control information is converted into the 1st machine instruction of the storage section 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a sequence control device that inputs or displays a program in the form of a relay development diagram, and in particular, forcibly designates the contact logic of a program 81 in a relay development diagram. Sequence control device (= related to) equipped with functions.

b Technical background and its problems Program and display method of sequence control device 1
It is becoming common to use the representation of a relay development diagram. 1st
As shown in the example in the figure, the symbols for relay contacts and coils are C
Programming is performed on a display device such as RT, and this is
The program is then converted into a machine command sequence (2) that can be executed by the processing section and stored in the program storage section (2). It is.Sequence actual゛j
When processing, the contents of the program storage section are transferred to the arithmetic processing section (
Two signals are input from the outside (processed based on two signals,
This result is sent to the output section to control the external oscillator.

These sequence control devices differ greatly from the control needles in their simple grossing method, but in recent years, due to the increased cost of software, the steps after program creation, such as debugging, adjustment, maintenance, etc. Even at this stage, simple handling is becoming more and more viewed as preferable.

In these cases (2 required and i, t); in the case of L, while trial operation is performed using a program that has already been operated by two operators, when an operator becomes You can check the accuracy of the program and its consistency with external processes by controlling the program, and if necessary, you can test the program and make changes and modifications.The purpose of this is to , the specified input signal taken in from the outside (the two correspond to the internal memory rather than the actual external state, and is controlled to produce a Next, efforts are being made to add strong control/σ functions, such as disabling the command corresponding to the command line and separating it from the program so that the operator can instruct the actual state of the command line. These four functions are effective in terms of input/output simulation, but they also have the disadvantage that the influence of these operations affects the entire program, and that the logic of partial parts cannot be changed (exactly as compared to conventional methods). It has not been possible to achieve a function that requires a small turnaround, such as changing the wiring of individual circuits when testing and adjusting the hardware relay circuit.

C. Purpose of the Invention The present invention has been made in view of the above-mentioned circumstances (2), and realizes that individual contact logic of a program can be operated as necessary, and is useful for debugging and debugging of programs and programs of sequence control devices.
The purpose is to make adjustment, maintenance, etc. (-) a sequence control device with simple and powerful functions.

d.Summary of the Invention The present invention includes a program input section that inputs a program in the form of a relay development diagram, and an output signal of the program input section that converts the output signal into a first machine command including information on contact type and contact number. Self-memory program storage unit and memory of this program storage unit 1. (c) a program display unit that reads the contents and displays them in the form of a relay development diagram from the first machine command;
When the program is executed (2) the sequence control device R42, which includes a performance control section that performs one sequence operation and input/output processing, executes a desired machine command from the program storage section and performs input/output processing, Contact contact number information (2 forced open and strong control s, path no it, kana instruction contact forced information 1) In addition, a configured 2 machine command is provided, and this second machine command is programmed in the previous 1 self-program. This sequence control device is characterized by being provided with a machine command saving control unit that rewrites a predetermined 1i11 first machine command stored in a storage unit.

e Embodiment of the invention FIG. 2 shows the entire sequence system 111 of the present invention
# Indicates the completion of the test. The program is manually entered from the program input section 1 using combinations of symbols such as relay contacts or coils as shown in FIG. This is converted into a machine instruction string (-) by the machine instruction converter 2, and the result is stored in the program storage unit 5.
The contents of the program storage section 5 are led to the machine instruction inverse conversion section 4, which converts the machine instruction string into a relay format (binary format), and the result is displayed in the program display section 3 (=
, is displayed in the format shown in FIG.

On the other hand, when executing a sequence program, the arithmetic processing section 8 retrieves a desired machine instruction from the program storage section 5, and based on the contents (2), the input section 7 also takes in an external human input signal (=computation). The results are output to the outside through the output section 9.

Further, the program input section 1 is configured in the form of an operation console such as a keyboard, and is paired with the program display section 3.
The operator can operate while looking at the display.

The machine instruction rewrite control unit 6 receives information specifying whether the contact points specified in the program input unit are short-circuited or forced to open in the program (information on the position of the two points and the forced open circuit), and stores them in the program storage unit. The corresponding machine command in 5 is the machine command for forcibly specifying the contact logic (=, or vice versa (= from the instruction for forcibly specifying the contact logic to the original contact Has the ability to change vows to commands.

Figure 3 Ha) shows the structure of the corresponding contact symbol (2) as an example of a machine command, and the instruction code section 11 indicates the contact type such as normally closed, normally ctM or pulsed contact, and the tangent line such as branch 1 confluence of the circuit. The state is defined, and the operand part (2) defines the contact identification number 1M.

In addition, Figure 3 (fJl is an example of a machine command that forcibly specifies and specifies contact 1iii &
12 Corresponding parts (2 is a contact force open or short circuit specifying part 13, contact type specifying part 14, connection state specifying part 15, and the part corresponding to the operand part 12 also has a contact identification number is specified.

FIG. 4 is an explanatory diagram of machine instructions, their behavior, and processing.The instruction code section 11 of the machine instruction issued by the instruction register section is decoded by the instruction decoding section 21, and the sequence is executed according to its contents. The unit 22, the input unit 7, and the output unit 9 are controlled.

The register is used to store the results of intermediate operations, and sequence logic operations are performed between this information and human power.

Next, the method and operation of forcibly specifying the contact logic, which is the upper limit of the present invention, will be explained. rliJ In the test operation state as described above, the operator monitors the sequence program on the program display section and, for example, selects contact point 33 (two strong strokes) in the program shown in Figure 1 to designate a short circuit. The program input section 1 instructs the program input section 1. This designation information consists of position information in the sequence program (1) and a forced short circuit command.
The F change control unit 6 selectively rewrites the corresponding command on the back of the program storage unit 5 as a contact forced short circuit command (second rewrite. At this time, as explained above, the original contact type is a normally open contact, and a contact The identification number 33 is maintained in the rewritten instruction. The rewritten instruction is displayed in the machine instruction inverse conversion section 4 (2) with a predetermined symbol that can be used to identify the job, for example, as shown in FIG. .

When this instruction is executed, the instruction register section add (2) in Figure 4 (= is taken out, the instruction decoding section 21 decodes that it is a forced short circuit, and unconditionally applies to the sequence operation section n: 2, operation The result is made active, and this result is stored in register n1.The circuit logic of the contact C2 and the υ contact 33 is exactly equivalent to short-circuiting the contact part of the relay circuit (1) with the - wire.Here, It should be noted that this function is completely independent from other circuit logic, and in the case of (other part 6 of the Niprogram) this one contact point 33 (two paired coils 33 exist (E t However, this is completely unrelated to the change in the two-contact logic (there is a possibility that there is a change in the two-contact logic. This allows for the setting of experimental inputs, and, of course, the changes in the 114 circuits. Logic changes can be made effectively, and changes to the previous Nagisa's theory can be made effectively.
There was an inconvenience that caused me to stop driving because of knee crotch, but this has been resolved.

The above operation and this (= accompanying operation explanation: 1・Ma, strong 1tt
ll Short circuit (as mentioned above, in the case of forced open), the command decoder becomes a forced open command, and the instruction decoder 21 sequence operation ■ 1 part 22 (2)
Command one movement and one movement.゛Also, the opposite of forced specification (′
The operator did not give an instruction to release ``-1.
The time has passed (= contact forced short-circuit or release command C'''
-Written: Program description with 3 hokojira 1. The commands in part H are specified in the 8th order, 11 (-The type of contact maintained, the 1lf1! ff'j number of the contact, etc.) (2 groups, no forced specification. The contact point (2) corresponds to the command and the switch (-).

In addition, in the above explanation, the execution processing method of the sequence circuit program; Needless to say.

f. Effects of the Invention The present invention (2JT is a sequence of 1till input or display of a program in the Nosugi style of a relay development diagram)
In the ml device Q, the program's other contact logic and two insects (
It has a two-contact logic forced specification tIA function, and one of the programs
maintenance, adjustment, maintenance, etc.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing a flowgram 10 in the form of a relay development diagram, FIG. and explanatory diagram of calculation processing, Figure 435) Contact point Qiang City 1j
Figure C shows an example of short circuit display. 1 Program input section 2 Machine instruction conversion section 3 Program display section 4 Machine instruction inverse conversion section 5 Program storage section 6 Machine instruction l exchange control section 7 Human power section 8 Processing section 9 Output section addition Instruction register section 2 ■ Instruction decoding Part 22 Sequence calculation unit Register (7317) Agent Patent attorney (Patent attorney or 1 person) 1 @ Figure 2 / Figure 3 /,, 5 /q 15 Figure 4 Figure 5 Figure 3

Claims (1)

[Claims] A program input section into which a program is input in the form of a relay development diagram, and an output log record of this program input section.1.
Part No. 1 includes a program display section that reads out the contents of the first machine instruction and displays it in the form of a relay development diagram; q. In the sequence control device i+, which is equipped with an arithmetic control unit that performs input/output processing, information on the contact type and the contact number (2) Information on forced contact that instructs either forced open or forced short circuit. In addition, a second machine instruction configured as above is provided, and a machine instruction 1 replacement control section is provided for rewriting the second machine instruction with a predetermined first machine instruction stored in the program storage section. Characteristic sequence control device.