JPS6286406A - Programmable controller - Google Patents

Abstract

PURPOSE:To inform the arrival of input/output to a set operating number of times by providing a discriminating means discriminating that a count result reaches the set operating number of times and an informing means driven in response to the discrimination result. CONSTITUTION:When it is discriminated to be dissident from the storage state in the state of designated input/output of a flag register FA, the state of input/ output at that point of time is written in a flag register FB and it is discriminated that the input/output has a change, the contact operating number of times stored in a flag register FC is renewed by one. While the number of operations of the contact point at that point of time is larger than the operating numbers of the contact point preset in advance, the operation above is repeated and when the number of operations of the contact point reaches the preset operating numbers, the content of a flag register FE is set to one. Thus, the arrival of the operating number of times is informed by a buzzer 6a and displayed on a display device 6b and it is easily confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION (N-concave aspect of the invention) The present invention includes a storage means for storing designated input/outputs and a set number of operations, and a counting means for counting the number of operations related to the stored input/outputs. When the counting result reaches the set number of operations, an alarm is issued, making it easy to check whether any specified input/output contact has reached the end of its life. It is something.

(Prior art and its problems) As is well known, as an input device for a programmable board controller, 1. There are controllers equipped with contacts such as t1 limit 1 switches, pressure switches, photoelectric switches, etc., and programmable controllers with output circuits equipped with 1. t,
Equipped with an output contact relay.

The lifespan of these input/output devices is usually determined by the number of contact operations.In order to properly maintain the input/output devices, it is necessary to increase the number of contact Uj operations to λ.

Conventionally, in order to achieve such [1 target], the following steps are required:
Is it possible to create a program that counts the number of input/output tangent operations using a counter instruction or the like, and uses the output to drive an alarm circuit? As a result of using input/output for circuit maintenance, there is a problem that the number of input/output that can be used for original control is reduced by that amount, and there are also problems such as increased programming effort.

(Object of the invention) The object of the invention is to set the input/output and number of operations (
An object of the present invention is to provide a programmable controller that can notify that a corresponding input/output has reached a set number of operations.

(Structure and Effects of the Invention) In order to achieve the object of item t, the present invention includes a storage means for storing specified input/output and a set number of operations in response to a predetermined input operation; The number of operations related to input and output is counted as 84, and it is determined that the number of operations has reached the set number of operations.
The present invention is characterized by comprising: a determining means that determines the determination result; and a notifying means that is activated in response to the determination result.

With such a configuration, it is possible to monitor the number of input/output contact operations without wasting the number of inputs and outputs required for the original control, and without requiring much programming effort. becomes possible.

(β1 Brightness of Embodiment) FIG. 1 is a -1079 diagram showing the hard disk drive configuration of the grammar controller according to the present invention.

In the same figure, the CPU 1 is mainly composed of a microcomputer 4), and executes a system program stored in the ROM 2 using -f[E,I grammar]nt[1]. -Ra's original operating machine (one piece of equipment,
It is adapted to perform various Levi's operations.

The basic operation of the programmable connector 1 is to transfer the input data taken in from the input/output circuit to the input/output memory, which has 40 inputs. Input update process to write <rt to the 1 gram counter
)'' An instruction to read each instruction Rh constituting the code if71 program from the program memory 5, execute it with reference to the input/output data in the input/output memory 4, and change the output data of the input/output memory 4 based on the execution result. It consists of an execution process and an output update process in which the output data in the input/output memory 4, which has been refined as a result of the instruction execution, is sent from the input/output circuit 3 to the outside.

In addition, typical system service processing includes:
Based on the data input through the operation of the program console 6, the program writing process for writing 1 gram into the user program memory 5, programmable...
] The status of the input and output of the controller operation is shown in Figure 1-1.
Examples of such processing include monitor processing for displaying information on the display device of the console 6.

In addition, a buzzer 6a is attached to this console 6 (column number is date gram), and this buzzer 6a is designed to notify that the number of operations of the specified contact point has reached the set value. ing.

Furthermore, a characteristic feature related to the present invention is that the working R
In addition to the normal working area W in A47, there are old flag registers FA, FI31 [c.

In addition to the FD, a new 11-round flag register "E" has been added in the input/output memory 4.

Then, the specified input/output number is recorded in the flag register FA, the state at the time of the previous scan of the crowded corner specified by the flag register FA is stored in the flag register FB, and the flag is stored in the flag register FC. The current number of input/output operations specified by register “A” is stored, and the flag register “D” stores the set number of contact operations (R1).
be remembered.

Further, the flag register FE in the input/output memory 4 is configured to store a determination result as to whether or not the number of operations has reached a set value.

As shown in FIG.
As shown in FIG. 2, a display 6b for displaying two-monitor commands nE, etc. is installed on the front panel of the computer, and a keyboard equipped with a numeric keypad, command keys, etc. An operation counter key 6c, a monitor key 6d, and a release key 60 are newly provided.

Assuming the following configuration:
The overall operation of the 1-grammaple controller will be explained with reference to the flowchart of FIG.

When the program is started by turning on the power, etc., initial processing is performed to set registers, flags, etc. (step 301), and then until the operation of the RUN key is confirmed from the Progera console (step 303, negative). , repeat to system service processing (
Step 302).

In this system service processing 8, J
- Confirmation of operation count setting mode and operation count monitor mode are performed repeatedly (steps 401 and 402).
).

Here, in the program console of FIG. 2, when the input/output number and the number of operations are input using the Φ1 operation number counter 6c, the release key 6e, the input/output, command keys, etc.
The input/output number is stored in the flag register FA, and the number of operations is stored in the flag register [0].

Next, when the R1, JN mode is set from the program console (step 303), the program ``1 gram counter 304), and executes the input horn update process (step 305).

' As described above in 7j, in this input update process, the input data input from the one-sheet input/output circuit 3 to J17 is written to the input rear of the input/output memory 4.

At this time, the data of the designated monitoring input number is also input to IIQ at the same time.

Next, the first shift of the program counter PC is updated by +1 t! (Step 309>) Until one FN instruction is read (No in Step 307), the program counter PC reads the designated instruction 5R from the program memory ru+ (Step 306), and input/output memory 4
Based on the output data of JH, the specified command nR is executed, and the output data of the input/output camera 4 is calculated as 1iF=t based on the command execution result (step 308).

Next, when the FND instruction is read (step 307
? z constant), output further 9fT processing (step 310
).

6f1 As mentioned above, in this output update process, the output data rewritten according to the instruction execution result in the input/output camera 7 is sent out from the input/output circuit 3 (Ct).

Note that the output state of @new, which will be described later, is determined in the state immediately before this output update process.

Next, system service processing B is executed (step 311). In this system service process 13, the fifth
As shown in the figure, the state of the flag register [E in the camera 7 is repeatedly checked, and this is 1101+
If so, the system 1Y-his processing B ends without performing anything (step 311).

System 1J-Bis processing B ends Dokustellar rz'
3"n>, then check whether any input/output number is set in the flag register [A, and only for those with a set value (Yes at step 312), close the current value to the set input/output. Read the status of -〇 - This is the status from the previous scan (stored in FB)
Check to see if they match, and if they do, do nothing and repeat the steps above.

On the other hand, if it is determined that the I'R constant input/output state in flag register "A" does not match the state nEJed to flag register FB (step 313), the current input/output state is stored in the flag register FB (step 314), and the number of contact operations stored in the flag register Fc is updated by +1, assuming that there has been a change (the contact has operated) in the corresponding turnout point (step 315).
.

Then, the operation of the contact point at that point, i.e. F
Until the contents of C become larger than the preset number of contact operations, the flag register "D" (
Step 316 (No), repeats the operation of the contact, and when the number of contact operations reaches the predetermined number of operations (step 316, Yes), the contents of the flag register FE are set to 1'' (Step 317). .

Then, the next system 4f-hiss processing F3-1
0=, as shown in FIG. > , and display 6bt:
As shown in FIG. 7, the input/output number rTNJ, input/output number r007J, and the fact that the set number of operations has exceeded rOVER15000J are displayed, and the operator can easily confirm this.

B [If you want to know the number of intermediate operations of a specified contact, press the monitor key 6d on the program console 6.
Then, specify the corresponding input/output number using the input/output key, numeric keypad, etc.

Then, as shown in the flowchart of FIG. 4, a determination is made that the mode is the operation count monitor mode (step 402, YES), and then the current number of contact operations stored in the flag register Fc is determined as shown in FIG. Display 6 so that
It is similar to what is displayed in b.

In this way, this programmable controller
If you use input/output commands or counter commands, <><
, jM It is possible to easily know that the number of operations per second of input and output has reached the specified 1+M, and maintenance of input and output contacts is performed in accordance with 1.1. It is also possible to know the current number of operations of the input/output contact determined by JW depending on the I:t or necessary number, and the usability of this type of device can be further improved.

[Brief explanation of drawings]

Fig. 1 IA The block diagram according to the present invention -1 Grammar pull -1 nt [1-Jn block diagram, Fig. 2
Figure 3 is a perspective view showing the external appearance of the 1 gram console. Neralno “1-
Chart, Figure 4 1, East System History I! lI
Figure 5 1.
1 System Revising Processing B ΔFIll
1-dito-1 ~, f5 Figure 1.1 for the number of operations of the specified contact point ri]hI! Display i1! FIG. 7 is an explanatory diagram showing an example of a display when the number of operations of the specified input/output contact is 8Q and 11 times. 1... CP LJ 2... OM 3... Input/output circuit 1... Input/output memory 5... Cozab "1 gram memory 6...
・Program console 6a...Buzzer 7...Working RAM FA, FB, Fc, Fo, FE...Flag register

Claims (1)

[Claims] (1) In response to a predetermined input operation, a storage means for storing a specified input/output and a set number of operations, a counting means for counting the number of operations related to the stored input/output, and a counting result is set. A programmable controller comprising: a determination means for determining whether the number of operations has reached a predetermined number; and a notification means driven in response to the determination result.