JPS59139405A - Timer/counter setting device of programmable controller - Google Patents

Abstract

PURPOSE:To attain an easy and inexpensive device by using a timer/counter number, which is displayed on a number display device and is set by an increasing/decreasing switch, and a timer/counter set value, which is set by an analog setter, as rewrite command data of a memory. CONSTITUTION:A timer/counter number whose set value should be rewritten is displayed and set on a display device 1 by an increasing/decreasing switch 3. A command switch 6 is set to a change mode, and a display changeover switch 4 is set to display a set value, and the output of an analog setter 2 is displayed on the device 1 through an A/D converter 8, and the set value is set optionally by this setter 2 and is stored temporarily in a control circuit 7. The command switch 6 is set to the write mode, and said stored set value is given to a main control part 9. The main control part 9 writes said set value in a set value area 11 of a user program memory 10 by the rewrite command of a user program.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a timer/counter setting device that is connected to a programmable controller and is used to rewrite the first cycle of timer/counter settings in a programmer.

(Background of the Invention) As is well known, the user program of a programmable controller can be rewritten and set in four different ways by connecting a program console. However, not all users purchase a program controller at the same time as a program controller. Nowadays, programmable controllers are often used as specialized control devices, rather than requiring versatility, and even in these cases, their superiority over conventional hardwired logic circuit control panels is recognized. There is.

When a programmable controller is used as a dedicated control device, the manufacturer generally provides the user program (jt-1-ruσ) in response to the user's request, and the programmable controller is provided with the desired user program incorporated. Delivered to the user.In addition, it is programmable with Unah\Tap 5.
Users using the controller do not need an expensive device, ie, a program console, to freely rewrite the program.

However, even when the programmable controller is used with fixed specifications as described above, there is a strong desire to be able to adjust the set values of the timer/counter functions.

This is a natural requirement given the role of timer/counter functions in control systems.

In response to this desire, programmable controllers have been developed that have an architecture that allows the set values of several timers/counters to be arbitrarily set using individual digital switches or variable resistors. However, if this method is adopted for all timers/counters, a huge number of setting devices will be required, which is undesirable in terms of space and cost.

(Object of the Invention) The object of the present invention is to provide a simple configuration C that can be connected to the main body of a programmable controller and arbitrarily rewrite the set values of each timer/counter in the user program memory.
An object of the present invention is to provide an inexpensive timer/counter setting device.

(Structure and Effect of the Invention) In order to achieve the above object, the present invention includes a numeric display, a display changeover switch, a timer/counter number increase/decrease switch, an analog setter for the timer/counter set value, a command switch, a display switching means for displaying a timer/counter number or a timer/counter setting value on the numeric display according to the selection of the display switching switch; A timer/counter number setting means that increases or decreases according to the operation of the increase/decrease switch and temporarily stores the number i, and digitally converts the output of the analog setting device and displays the timer/counter set value on the numerical display. and a timer/counter set value setting means for temporarily storing the set value, and 1. in response to the operation of the F command switch. A transmission means for supplying the timer/counter number and timer/counter setting value determined by the F-recording setting means to the programmable controller main body as date change command data of the user program memory. do.

According to this configuration, a very inexpensive and compact timer/counter setting device can be realized using a few switches, one numeric display, one variable resistor, and a simple microprocessor. With this device, the set values of all timers/counters in the user program memory can be arbitrarily rewritten. Therefore, for users who use the above-mentioned programmable controller with fixed specifications, the present invention is very practical and convenient as a device for adjusting only the set values of the timer/counter.

(Description of Embodiments) FIG. 1 shows the appearance of a timer/counter setting device A according to an embodiment of the present invention, and FIG. 2 shows the electrical configuration of the setting device A and its connection relationship with the programmable controller main body B. FIG.

The timer/counter setting device A is constructed of a thin box-shaped housing, and the front panel shows a 4-digit numerical display 1, a dial for an analog setting device 2 consisting of a variable resistor, and a timer/counter number. Increase/decrease switch 3 (increase switch and decrease switch) and programmable
A command switch 6 for instructing the controller body B to rewrite the timer/counter set value, etc., a display changeover switch 4, and a switch 5 for changing the time unit when setting the timer.
is installed. Further, the control circuit 7 includes a control circuit 7 made up of a microprocessor, etc., and an A/D converter 8 that converts the output of the analog setting device 2 into digital data. Also,
Although not shown, a plug portion for connecting the device @A to the connector of the programmable controller main body B is provided on the back side of the setting HIWA.

The control circuit 7 is 1. It performs all the controls as the display switching means, timer/counter number setting means, timer/counter setting value setting means, and transmission means described above. In other words,
When the display changeover switch 4 is switched to the timer/counter number side, the number on the numeric display 1 is displayed. When the number increase/decrease switch 3 is operated in this state, the number displayed on the display 1 is sequentially increased or decreased depending on the direction of the operation. Further, the number displayed on the display 1 is stored in a predetermined memory.

The cop causes the display 1 to display the timer/counter number whose setting value is to be rewritten by operating the number increase/decrease switch 3 described above. This sets the timer/counter number.

Next, the user switches the command switch 6 to the change mode and switches the display changeover switch 4 to the set value display side. Then, the 1lill I'l1 circuit 7 displays the output of the A/D converter 8 on the numeric display 1. A/D converter 8
Since the output of the analog setting device 2 is input to the , the value displayed on the display 1 can be changed by turning the dial of the setting device 2.The user can set any setting value on the display 1 by turning the dial of this setting device 2. For the set values of the timer and counter, the time unit is arbitrarily selected using the switch 5.When the set value of the timer/counter to be rewritten is displayed on the display 1 through these operations, the control circuit 7 The displayed value (set value) is then stored.

After setting the timer/counter number and timer/counter set value, Yuna then switches the command switch 6 to the write mode side. In response to this, the control circuit 7 transmits the temporarily stored data of the timer/counter number and the timer/counter set value to the main control section 9 of the programmable controller main body B. This data is given to the main control unit 9 as data for the self-loss command of the knee 1F program. In response to this, the main control unit 9 accesses the timer/counter setting value area 11 in the user program memory 10, and sets the timer/counter setting value area 11 specified by the setting device A to the area of the timer/counter number specified by the setting device A side. Loads the timer/counter setting value data.

In this way, the micropro is a small-scale device consisting of several switches, one analog setting device (variable resistor), one display, a control circuit consisting of a shank, etc., and an A/D converter, etc. With the setting device Δ, the data in the timer/counter setting value L area 11 of the programmable controller main body 8 can be freely rewritten.

In addition, 1. After setting the arbitrary timer/counter number using the above-mentioned operation, if you set the display changeover switch 4 to the set value side and switch the command switch 6 to the read mode,
The setting value of the puncture hole for that timer/counter number (area 11
The data stored in the display 1 is displayed on the display 1, and the set values can be confirmed. That is, in response to this operation, the control circuit 7 gives the above-mentioned timer/counter number to the programmable controller B as a data read command. Then, the main control unit 9 controls the user blog 11.
The set value of the designated number is read from the timer/counter set value area 11 of the memory 10 and transmitted to the control circuit 7. The control circuit 7 displays the data on the display 1. However, if the setting range of the timer setting value is not so wide, the switch 5 for changing the unit of setting time may be omitted. Further, the setting device A may be incorporated into the programmable controller main body B by connecting a connector/plug similar to the input/output crab unit, or it may be installed at a remote point from the programmable controller main body B with an appropriate communication means interposed. It may be configured to do so.

[Brief explanation of the drawing]

FIG. 1 is an external view of a timer/counter setting device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the electrical configuration of the setting device and its connection with a programmable controller tree. A...Setting device 1...Numeric display 2...Analog setting device 3...Number increase/decrease switch 4...Display changeover switch 5...Time unit switch 6...Command switch 7...・Control circuit 9...A/D converter B...Programmable controller main body 9...Main control section 10...User program memory 11...Timer/counter setting value ■Rear patent applicant Tateishi Electric Co., Ltd.

Claims (1)

[Claims] (1) A numeric display, a display changeover switch, a timer/counter number increase/decrease switch, a timer/counter set value analog setter, a command switch, and the numeric display according to the selection of the display changeover switch. Display switching means for displaying the timer/counter number or timer/counter set value on the numeric display;
A setting means for a timer/counter No. N that increases or decreases the counter number according to the operation of the increase/decrease switch and temporarily stores the number, and digitally converts the output of the analog setting device and displays it on the numerical display. a timer/counter set value setting means for displaying the timer/counter set value and temporarily storing the set value; and a timer/counter II set by both of the above setting means in response to the operation of the command switch. 1. A timer/counter setting device for a programmable controller, comprising @ and a transmission means for supplying the timer/counter setting value to the programmable controller main body as user program memory rewriting command data.