JPH0877872A - Loader for programmable controller - Google Patents

Abstract

PURPOSE: To make possible easy operation in a condition where a loader for a programmable controller having a function to input the existence of plural marks is mounted on a single hand by combining a second switch with individual first group switches. CONSTITUTION: A loader 1A is housed in an outer box 1AB having dimension suitable for placing and operating it on a palm, and first group switches K10, K11, K12 and K13 or the like are arranged on an operation surface 2A of a front surface of the outer box 1AB, and a second switch K2A is arranged in a position which contacts with a thumb of the palm on which the loader 1A is placed and by which operation by the thumb becomes easy. In a condition where the switch K2 is not operated, the first group switches output signals to show the existence of a lower stage signal according to operation of the first group switches by a hand on the side where the loader 1A is not mounted, and in a condition where the switch K2 is operated, the first group switches output signals to show the existence of an upper stage signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable controller (PC) in the following description.
A program loader for a programmable controller as a device for creating a program to be executed, storing the created program in a PC, and displaying the operating state of the PC.

[0002]

2. Description of the Related Art FIG. 7 shows an appearance of an example of a conventional programmable controller loader (hereinafter simply referred to as a loader). In the figure, 1 is a loader, 2 is P
The operation surface 3 of C is a display unit. K10 to K13 are switches belonging to the first switch group, and other switches belonging to the first group are omitted in the figure. K2 is a second switch that selects whether the first switch group outputs a binary signal indicating the presence or absence of an input corresponding to the first symbol or a binary signal indicating the presence or absence of an input corresponding to the second symbol. K5 is an execution switch for giving a signal for storing a program created by operating the first and second switches in a storage means inside the loader 1 (not shown). These switches are provided on the operation surface 2. It is arranged. In the following description, in order to simplify the description, the state in which the switches belonging to the first switch group indicate the presence or absence of the input corresponding to the first symbol is in the lower stage, and the switches belonging to the first switch group correspond to the second symbol. The state indicating the presence or absence of input is expressed as the upper row. According to this expression, the switch K2 is a switch having a function of switching the upper and lower stages of the first switch group. In the following description, "signal" represents a binary signal unless otherwise specified.

The procedure for creating a program by the loader 1
The range shown in the figure will be described as an example. The procedure for creating a program by the loader 1 is widely used in general, in which a source program is created in the expression format of a ladder diagram, and the created source program is automatically converted into a machine language program that can be executed by a PC inside the loader. It depends on the method that is normally done. Since the source program represented by the ladder diagram is sequentially created from the number 0 in units of one circuit, the number of the circuit to be created is called first. The operation of calling a number is not directly related to the present invention, and therefore its explanation is omitted. As a result of calling the circuit, the circuit number 1000 is displayed on the display unit 3 in the illustrated example. The circuit with the circuit number 1000 loads the 1-bit data BOO1 stored in the storage means (not shown) into the arithmetic register by the code indicating the normally open contact with the code B001.
Next, the data BOO1 loaded in the arithmetic register and the 1-bit data BOO2 stored in the storage means (not shown)
Represents that the AND operation is performed with the data of the inverted value and the operation result is stored in the 1-bit storage area B100 of the storage means (not shown). The operation for creating this program is performed by the first group of switches K10, arranged on the operation surface 2.
Use K11, K12, K13 and the second switch K2. The data BOO1 must be specified first, so enter the characters BOO1. Since the letter B at the top is on the upper row of switch K11,
Press switch K2 to select the upper row of switch K11 as if switch K2 was operated.
When is pressed, the code corresponding to the letter B is input to the register (not shown) inside the loader 1. Then, the switch K2 is released, the switch K2 is set in the non-operated state, the lower stage of the switch K10 is selected, and 0 is input for two digits. The last digit 1 is input by pressing switch K11 while the lower row is selected. Similarly, the inputs of normally open contact and normally closed contact graphic symbols are input by operating switch K12 and switch K2, and the output symbol at the location indicated by symbol B100 is the lower stage selected by switch K2. Input with switch K13. The input result is displayed on the display unit 3 each time the input is sequentially performed, and the input result can be confirmed. Finally, when the input of one circuit is completed and the switch K5 is pressed, the input program of one circuit is stored in the storage means (not shown).

[0004]

As an application field of the micro computer, the PC has been widely used as a device for sequence control as the application of the micro computer has progressed. It's not just people in a limited field. For this reason, PCs are required to be easy to understand and easy to operate. In the early PCs, the loader operation switch for creating a program has a format corresponding to the presence / absence of one symbol (letters are also described in the range of symbols) for creating a program for the sake of simplicity. PCs that are available and are still simple
This format is used for. However, as PCs have advanced and various functions have been installed in PCs, the number of switches increases depending on the expression method in which one switch corresponds to one symbol to express these functions. It became annoying. Therefore, at present, a loader having a structure shown in FIG. 7 in which one switch is switched to the upper and lower stages so as to correspond to two symbols has been widely used.

However, the loader is used not only for the purpose of program creation but also for displaying the operating state of the PC, and
It is often used for the work of modifying the program at the site where the PC is installed. Therefore, it is very convenient if the PC is small and can be operated with one hand. On the other hand, there is a limit to miniaturization of switches due to the problem of operability, and the number of switches cannot be increased in order to fit in a small size. Therefore, it is necessary to assign a plurality of symbols to one switch. In order to assign multiple functions to one switch, one switch can be used by switching to the upper and lower stages as described above, but since multiple switches must be handled at the same time, one hand can be used even if it is miniaturized. Operation becomes difficult.

In view of the above-mentioned circumstances, it is an object of the present invention to provide a programmable controller loader which is easy to operate with one hand, and in which each switch has a function corresponding to a plurality of symbols. .

[0007]

In order to achieve the above object, according to the present invention, a first switch group consisting of a plurality of switches outputting one binary signal and one binary signal are provided. And a second switch for outputting, the second switch outputs one value of the binary signal in an unoperated state, and outputs the other value of the binary signal in an operated state. Each switch belonging to the first switch group is provided with a binary signal indicating the presence or absence of the first symbol corresponding to each switch, on the condition of the binary signal output by the second switch in the non-operation state. Each switch belonging to the first switch group indicates the presence or absence of a second symbol different from the first symbol corresponding to each switch, on condition that the binary signal is output and the second switch outputs in the operating state. In a programmable controller loader configured to output a binary signal, the programmable controller loader is mounted on the palm of one hand and stored in an outer box of a size that is easy to operate. Is provided with a second switch at a position where it touches, and the second switch is in an operating state when the thumb touches or presses the switch, and is in a non-operating state when the thumb is released from the second switch. To do.

Further, a first flip-flop circuit for changing the value of the binary signal to be output is provided when the second switch is changed from the non-operated state to the operated state and is again in the non-operated state. When the value of the binary signal is one of the binary signals, each switch belonging to the first switch group outputs a binary signal indicating the presence / absence of the input of the first symbol, Output binary signal is 2
It is preferable that each switch belonging to the first switch group outputs a binary signal indicating the presence or absence of the second symbol in the case of the other value of the value signal.

Further, when the programmable controller loader is mounted on the palm, a third switch is provided at a position where it can be operated by the index finger, and the third switch is brought into an operating state when the index finger comes into contact with or is pressed against the switch, and the index finger is operated. When the button is released, it becomes a non-operation state and outputs a different binary signal value depending on the operation state and the non-operation state. When the third switch changes from the non-operation state to the operation state and then becomes the non-operation state again. A second flip-flop circuit for changing the value of the binary signal to be output,
When the output of the second flip-flop circuit is one value of the binary signal, the first switch group outputs the first switch group.
The signal indicating the presence or absence of the symbol or the second symbol is a signal effective for programming, and the first symbol output by the first switch group when the output of the second flip-flop circuit is the other value of the binary signal. Alternatively, it is preferable that the signal indicating the presence / absence of the input of the second symbol is a signal effective for displaying the operation state of the programmable controller.

[0010]

In the loader for a programmable controller according to the present invention as defined in claim 1, when the loader is placed on the palm of one hand, the thumb of this hand is separated from the second switch, and therefore the second switch. Becomes a non-operation state, and each switch belonging to the first switch group determines whether the first symbol corresponding to each switch is input or not, on the condition of the signal output when the second switch is in the non-operation state. Output the signal that represents. Also, when the thumb touches or is pressed against the second switch, the second switch is in an operating state, and each switch belonging to the first switch group outputs a signal output when the second switch is in an operating state. Under the condition, each switch outputs a signal indicating whether or not the corresponding second symbol is input.

Further, in the programmable controller loader according to a second aspect of the present invention, the switches belonging to the first switch group are outputting a binary signal indicating whether or not there is an input corresponding to the first symbol. In the above, when the thumb of one hand holding the loader is brought into contact with or press-contacted with the second switch, and then the thumb is released from the second switch, the first
The flip-flop outputs a binary signal having a value different from the previous output, and the switch belonging to the first switch group indicates the presence or absence of the input corresponding to the second symbol on the condition of the binary signal. It outputs a binary signal. In addition, when the thumb is touched or pressed against the second switch and then the thumb is released from the second switch, the output of the first flip-flop outputs a binary signal having a value equal to the first value different from the previous output. Therefore, the switches belonging to the first switch group output a binary signal indicating the presence or absence of the input corresponding to the first symbol.

Further, in the programmable controller loader of the present invention as defined in claim 3, the loader for the programmable controller is operated in a state where an input from a switch belonging to the first switch group of the loader effectively acts for program creation. When the index finger placed on the palm is touched or pressed against the third switch and then the index finger is released, the value of the binary signal output from the third flip-flop changes, and this changed binary signal is used as a condition. The binary signal input from the first switch group of the loader becomes an effective signal for displaying the operating state of the programmable controller. Further, in this state, when the forefinger is contacted with or pressed against the third switch, and then the forefinger is released, the value of the binary signal output from the second flip-flop changes to be the same as the initially output binary signal. A binary signal of a value is output, and on the condition of this binary signal, the switches belonging to the first switch group are in a state of outputting a binary signal corresponding to a symbol effective for creating a program.

[0013]

【Example】

(Embodiment 1) FIG. 1 shows an external view of an embodiment of a programmable controller loader according to the present invention (hereinafter simply referred to as a loader) according to a first aspect of the present invention. In the figure, 1A is a loader, 2A is an operation surface of a PC, and 3A is a display unit. Loader 1A is an outer box that can be mounted on the palm of an adult's hand.
It is contained in 1AB. K10 to K13 are switches belonging to the first switch group, K2A is a second switch for switching the upper stage and the lower stage of the first switch group, and K5
Is an execution switch for storing a program created by operating the first and second switches in a storage means inside the loader 1 (not shown). Of these switches, the switches other than the switch K2A are The switch K2A is arranged on the operation surface 2A, and is provided at a position where the thumb of the mounted hand comes into contact when the loader 1A is mounted on the palm. The function of switch K2A when creating a program is the same as that of switch K2 shown in Fig. 7.
Since the functions of K10 to K13 and the switch K5 are the same as those of the switches having the same symbols shown in FIG. 7, the description of the procedure for creating a program using these switches will be omitted.

The switch K2A is a switch that switches to a binary signal opposite to that before the contact or the pressure contact when it is touched or pressed by a finger, and the switch K2A is pressed by the thumb of the palm with the loader 1A placed on the palm. The outer shape is the size that is the easiest to operate by touching or pressing. Figure 2
Shows an example of a typical switch used as the switch K2A. Fig. 2 (a) is a diagram showing the structure of a push-button switch PB1 that opens and closes mechanically. When the push-button switch PB1 is not operated, the operating push-button SB1 of the push-button switch PB1 is displaced to the left side of the figure by the spring SS1. When the operation push button SB1 is pushed rightward, the switch portion S1 is displaced rightward in the figure, and the electrodes E0 and E1 of the switch are closed. Figure 1 (b) is a diagram showing the connection relationship of the switch PB1 in the electrical circuit. In switch PB1, one electrode E1 is a resistor.
It is connected via R1 to the positive pole Vcc (the voltage of this pole is the reference for the value 1 of the binary signal) of the DC power supply of the loader 1A (the same as the loader 1A shown in FIG. 1), and the other pole E0 Is connected to the negative pole GND of the DC power supply (the voltage of this pole is the reference for the value 0 of the binary signal), and the signal SG1 of this switch is output from the connection point of the switch PB1 and the resistor R1. Therefore, the switch
In the non-operated state where the push button SB1 is not pressed, PB1 does not close between electrodes E0 and E1.
The voltage value of the positive electrode Vcc is output as 1 of the signal value, and in the operation state where the push button SB1 is pressed, the electrode
The circuit between E0 and E1 is closed, and the signal SG1 is output with the voltage value of the negative GND as the signal value 0.

FIG. 2 (c) is a view showing the structure of another example of the second switch, in which PB2 is a switch, SB2 is a push button of the switch PB2, and VR2 is a machine added from the outside. It is a variable resistance element whose resistance value is changed by dynamic pressure. When push button SB2 is pushed to the right in the figure, the resistance value of variable resistor VR2 decreases corresponding to the magnitude of the pushed pressure. FIG. 2D shows a circuit of the switch PB2 that generates a binary signal from the resistance value of the variable resistance value VR2. In the figure, R2, R3, and R4 are fixed resistors, and VR1 is (c) in Figure 2.
The variable resistance is the same as the resistance of the same sign. The resistor R2 and the variable resistor VR2 are connected in series, the terminal of the resistor R2 that is not connected to the variable resistor VR2 is connected to the positive pole of the power supply, and the terminal of the variable resistor VR2 that is not connected to the resistor R2 is the negative pole of the power supply.
It is connected to GND and the connection point between the variable resistor VR and the resistor R2 is connected to the input signal terminal V1 of the comparator CMP1. Further, the resistors R3 and R4 are connected in series, the terminal of the resistor R3 not connected to the resistor R4 is connected to the positive electrode Vcc of the power supply, and the resistor V4
The terminal on the side not connected to the resistor R3 is connected to the negative GND of the power supply, and the connection point between the resistor R3 and the resistor R4 is the comparator CMP1.
Connected to the input signal terminal V0 of. When the push button SB2 is not pressed, the resistance values of the resistors R2, R3, R4 and the variable resistor VR2 are selected so that the voltage to the terminal V1 of the comparator CMP is higher than the voltage to the terminal V0 of the comparator CMP. Has been done. When the push button SB2 is pressed, the resistance value of the variable resistor VR decreases, and as a result, the voltage to the terminal V1 of the comparator becomes smaller than the voltage to the terminal V0 of the comparator. When the input voltage to the terminal V1 is higher than the input voltage to the terminal V0, the comparator CMP1 indicates that the output voltage Vout is a binary signal value 0, and if the input voltage to the terminal V1 is lower than the input voltage to the terminal V0. The output voltage Vout indicates the value 1 of the binary signal. Therefore, the switch PB2 outputs a binary signal 0 in the non-operated state where the push button SB2 is not pressed, and outputs a binary signal 1 in the operated state where the push button SB2 is pressed. By inverting the output signal of the comparator CMP1 by an inverter (not shown), the same signal as that of the switch PB1 shown in FIG. 2A can be obtained for the operation of the switch.

FIG. 2E shows a switch PB3 as another example of the second switch. In the figure, E3
1 and E32 are electrodes that form the detection part of the switch PB3, and the capacitance inside the electrodes is electrically conductive because the inside of the finger is a conductor when compared with the case where the finger is not touched. As shown in (f) of FIG. 2, the same effect as placing one metal plate facing the electrodes E31 and E32 is produced, and the electrostatic capacitance between the electrodes E31 and E32 is increased. Increase significantly. FIG. 2G is a block diagram of a circuit that detects the electrostatic capacitance between the electrodes E31 and E32 and outputs a binary signal SG3 according to the value of the electrostatic capacitance. In the figure, CV is the electrode E3
1 and electrode E32, which is a capacitor CV connected in series with resistor R31 to form switch PB.
The circuit in which the resistor R32 and the capacitor CS are connected in series is connected to the electrodes at both ends of the high-frequency AC power supply EA1 generated inside 3, and the terminal of the resistor R32 on the side not connected to the capacitor CS is the high-frequency AC power supply EA1. The resistor R31 is connected to the terminal on the side where it is connected, and is connected to the electrodes at both ends of the high-frequency AC power supply EA1, the resistance values of the resistor R31 and the resistor R32 are equal, and the capacitor CS is Select a value approximately equal to the capacitance when the finger is not approaching in the vicinity. If your fingers are not close to electrodes E31 and E32,
The voltage Vac between the connection point between resistor R31 and capacitor CV and the connection point between resistor R32 and capacitor CS is the result of choosing the resistance values of resistors R31 and R32 and the capacitance of capacitors CV and CS as described above. The voltage drop between the terminals of the resistor and the capacitor that form the circuit is in equilibrium and becomes almost 0 volt. When the fingers approach the electrodes E31 and E32, the capacitance of the capacitor CV increases significantly.
2. The balance of the circuit made up of capacitors CV and CS is lost and the voltage Vac increases significantly. Therefore, the voltage detection circuit CR32
The voltage value when the voltage Vac reaches the finger approach level is detected, and the value of the binary signal SG3 to be output is changed.

Each of the switches described in the above examples is stored in an outer box having a structure that shields electromagnetic waves, and mounted on a circuit board via a terminal provided on the outer box. Of FIG.
(a) is a diagram showing a mounting example of the switch configured as described above, in which 1AB is a part of the outer box,
SWB is the switch housed in the outer box, and PBC is a part of the circuit board. FIG. 3 (b) is a side view of the case where the switch SWB is mounted on the circuit board PBC, and the internal circuit of the switch is composed of the terminal T31 and the terminal T32.
The outer box of the switch SWB is fixed to the circuit board PBC by a component (not shown).

FIG. 4 shows a signal SN1 from one of the switches belonging to the first switch group and an output signal SN of the second switch K2.
2 and the signal UP indicating the presence or absence of the upper symbol (when the value of this signal is 1 corresponds to the presence of the upper symbol) and the signal UN indicating the presence or absence of the lower symbol (the value of this signal is 1 (Corresponding to the case where there is a lower symbol)). Signal SN1 is two 2-input AND circuits AND0, AND
The signal SN2 is input to one of the input terminals of 1 and the signal SN2 is connected to the other input terminal of the AND circuit AND0 and the output signal terminal is input to the other input terminal of the AND circuit AND1. Entered in. This circuit operates as described below. When the switch K2 (see FIG. 1) is in the non-operated state and the signal SN2 is 0, for example, the switch K10 is operated (the signal SN1 changes to the switch K1).
Assume that the value of the signal SN1 becomes 1 from the signal from 0). The output signal UP of the AND circuit AND0 becomes 0 because the value of the signal SN2 from the second switch is 0, and it is determined that the upper symbol is absent. On the other hand, as the output signal UN of the AND circuit AND1, the value 1 of the signal SN1 from the first switch is input to one terminal, and the value 1 of the inverted value SN2 of the signal from the second switch is 1.
Is input to the other terminal, the value becomes 1 and it is determined that the lower symbol is present. The second switch K2 is operated and the signal SN
When the value of 2 is 1 and the value of the signal SN1 becomes 1, the output signal UP of the AND circuit AND0 becomes 1 and it is determined that there is an upper symbol, and the output signal UP of the AND circuit AND1 becomes 0.
Therefore, it is determined that the lower symbol is absent. (Embodiment 2) FIG. 5 shows a main part of a processing circuit for a signal output from a second switch according to another embodiment of the present invention. In the figure, F is a JK-type flip-flop circuit as the first flip-flop circuit, terminals J and K are connected to the positive electrode Vcc of the power supply, and the clock terminal CK is a switch as the second switch. Signal SK2 from K2 (see Figure 1)
Is entered. When the switch K2 is operated and becomes non-operation again, the signal SK2 forms one pulse, so that the signal SN2 output from the terminal Q of the flip-flop F has the inverted value of the binary signal output so far. It becomes a binary signal. Z4 is a circuit having the same configuration as the upper and lower switching circuits shown in FIG. 4, and the signal SN of one switch in the first switch group is selected according to the value of the output signal SN2 of the flip-flop F.
It is determined whether the signal output from 1 is the signal UP corresponding to the presence or absence of the upper symbol or the signal UN corresponding to the presence or absence of the lower symbol, and the signal is output. (Embodiment 3) FIG. 6 shows still another embodiment of the present invention.
In the figure, 1B is a PC loader, and a PC loader 1B
Is stored in an outer box 2AB that is easy to operate by putting it on an adult's palm, and has an operation surface 2A, display unit 3A, switch K2A, and switch K1.
0 to K13, a switch K5, and a switch K3. these,
Of the parts that make up the PC loader 1B, the PC shown in FIG.
The elements having the same reference numerals as those of the loader 1A for PC are the same as the elements of the loader 1A for PC, and the description thereof will be omitted. The outer case 2AB has the same structure as the outer case 1AB shown in FIG. 1 except that the switch K3 can be mounted. Switch K3 is located on the upper side of outer box 2AB
Is a switch provided at a position convenient for contacting with the index finger when putting it on the palm of one hand, or for pressure contact, and the switch K3 is in the operation state when contacting with the index finger, or for pressure contact, When the output signal has one value of the binary signal and the switch K3 is separated from the finger, it is in a non-operation state and the output signal has the other value of the binary signal. The output signal of the switch K3 is supplied to a flip-flop circuit (hereinafter referred to as a second flip-flop circuit) as a second flip-flop circuit having the same function as the circuit shown in FIG. 5 provided inside the loader 1B. Built in,
The flip-flop inverts the value of the output signal every time the switch K3 is changed from the non-operated state to the operated state, and is again in the non-operated state.

When the second flip-flop operated by the switch K3 outputs the same signal as the signal in the non-operated state of the switch K3, this signal is used as a condition,
The signal representing the presence or absence of the upper or lower symbol of the first switch group selected by the second switch K2A is processed by a circuit (not shown) in the loader 1B as a signal meaningful for creating a program. When the output signal of the second flip-flop outputs the same signal as when the switch K3 is in the operating state, the second switch K2A
The signal indicating the presence or absence of the upper or lower symbol of the first switch group selected by is the data in the programmable controller (not shown) in which the loader 1B is connected to the display unit 3A and the communication is possible. A signal (not shown) in the loader 1B processes a signal having a meaning for the function of displaying the state of the programmable controller.

That is, according to the PC loader of the third embodiment,
In the state of program creation, the PC loader shown in FIG.
Similarly to 1A, switches K10 and K11 of the first switch group
Etc. and the second switch K2 can be used to input the sequence control program. Next, when the switch K3 is operated and then brought into the non-operation state, the symbols input using the switches K10, K11, etc. of the first switch group and the second switch K2 are connected to the loader 1B. It functions as a command for displaying data of a programmable controller (not shown) on the display unit of the loader 1B, or for displaying the state of a control target connected to the outside of the programmable controller. Next, when the switch K3 is further brought into the operated state and then returned to the non-operated state, the switches of the first switch group and the symbols inputted by using the second switch K2 come to function for creating a program.

[0021]

As described above, according to the present invention, the first switch group composed of a plurality of switches outputting one binary signal and the second switch outputting one binary signal are provided. The second switch outputs one value of the binary signal in the non-operated state where it is not operated, and outputs the other value of the binary signal in the operated state.
Each switch belonging to the first switch group outputs a binary signal indicating the presence or absence of the first symbol corresponding to each switch, on condition that the second switch outputs the binary signal in the non-operated state, Each switch belonging to the first switch group outputs a binary signal indicating the presence or absence of a second symbol different from the first symbol corresponding to each switch, under the condition of the binary signal output by the two switches in the operating state. In the programmable controller loader configured as described above, the programmable controller loader is mounted on the palm of one hand and stored in an outer box that is easy to operate. A second switch is provided, and the second switch is brought into an operating state when the thumb touches or presses against this switch, and the thumb is placed in the second switch. Since it is in the non-operation state when released from the switch, operation and non-operation of the second switch by the thumb of the hand on which the programmable controller loader is placed and operation of the first switch group by the hand on which the loader is not mounted Depending on the combination of operations, with the loader in one hand, it is possible to enter symbols of the type that doubles the number of switches in the first group, and for programmable controllers that are convenient for operations at locations where programmable controllers are installed. A loader is provided.

According to the present invention as set forth in claim 2,
A first flip-flop circuit that changes the value of the binary signal to be output when the second switch is changed from the non-operation state to the operation state and then returned to the non-operation state is provided. When the value is one of the binary signals, each switch belonging to the first switch group outputs a binary signal indicating the presence / absence of the input of the first symbol, and the binary signal output from the first flip-flop circuit. When is the other value of the binary signal, each switch belonging to the first switch group is
Since the binary signal indicating the presence or absence of the second symbol is output, it is not necessary to continue the operation of the second switch when the symbols on one side selected by the second switch are continuously input. Therefore, a programmable controller is provided in which the input of symbols is more convenient.

Further, according to the present invention as set forth in claim 3, when the programmable controller loader is mounted on the palm, a third switch is provided at a position where it can be operated by the index finger, and the third switch is the switch. When the forefinger touches or presses, it is in the operating state, and when the forefinger is released, it is in the non-operating state, and outputs a different binary signal value depending on the operating state and the non-operating state. A second flip-flop circuit that changes the value of the binary signal to be output when the operation state is entered and the non-operation state is entered again, and the output of the second flip-flop circuit is one of the two values of the binary signal. In this case, the signal indicating the presence or absence of the first symbol or the second symbol output by the first switch group is a signal that is effective for programming, and the second flip-flop is used. The output of-up circuit in the case of the other value of the binary signal output by the first switch group 1
Since it is assumed that the signal indicating the presence or absence of the input of the symbol or the second symbol is an effective signal for displaying the operation state of the programmable controller, by operating the third switch once, the program is continuously programmed. A load for a programmable controller is provided that is capable of continuously monitoring the state of the programmable controller by using the third switch once to make the controller.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a programmable controller loader according to the invention described in claim 1;

2A and 2B are diagrams showing a second switch of the programmable controller loader shown in FIG. 1, wherein FIG. 2A is a diagram showing a first example of the second switch, and FIG. 2B is a diagram showing a switch of the first example. Figure showing the circuit, (c) shows the second example of the second switch, (d) shows the circuit of the switch of the second example, (e) shows the third example of the second switch. Figure showing an example, (f) is an operation explanatory diagram of the switch of the third example, (g) is a circuit diagram of the switch of the third example

3A and 3B are diagrams showing a mounting procedure of the second switch in the outer box, FIG. 3A is a diagram showing a mounting state of the second switch in the outer box, and FIG. Diagram showing how to connect switches

FIG. 4 is a diagram showing a principle of selecting a first symbol and a second symbol by a second switch.

FIG. 5 is a diagram showing a circuit portion of an embodiment of the present invention according to claim 2;

FIG. 6 is an external view of a programmable controller loader according to an embodiment of the present invention as set forth in claim 3;

FIG. 7 is a diagram showing an example of a conventional programmable controller loader.

[Explanation of symbols]

1A Programmable controller loader 2A Operation surface 3A Display section 1AB Outer box K10, K11, K12, K13 Switch belonging to the first switch group K2A Second switch K5 Execution switch

Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display H03M 11/14

Claims (3)

[Claims] 1. A first switch group consisting of a plurality of switches outputting one binary signal and a second switch outputting one binary signal, wherein the second switch is not operated. One of the two values of the binary signal is output in the non-operation state, and the other value of the binary signal is output in the operated state of the operation. The second switch outputs the value in the non-operation state. Each switch belonging to the first switch group outputs a binary signal indicating the presence or absence of the first symbol corresponding to each switch under the condition of the value signal, and the second switch outputs in the operation state. Each switch belonging to the first switch group outputs a binary signal indicating the presence / absence of a second symbol different from the first symbol corresponding to each switch under the condition of the binary signal. In the programmable controller loader, the programmable controller loader is mounted on the palm of one hand and stored in an outer box of a size that is easy to operate, and when mounted on the palm, the position where the thumb of the palm comes into contact The second switch is provided, and the second switch is in an operating state when the thumb contacts or presses the switch, and is in a non-operating state when the thumb is released from the second switch. Loader for programmable controller. 2. The programmable controller loader according to claim 1, wherein the value of the binary signal to be output is changed when the second switch is changed from the non-operated state to the operated state and is again in the non-operated state. 1 flip-flop circuit is provided, and when the value of the binary signal output from this circuit is one of the binary signals, each switch belonging to the first switch group indicates whether or not the first symbol is input. A value signal is output, and when the binary signal output from the first flip-flop circuit is the other value of the binary signal, each switch belonging to the first switch group is a binary value indicating the presence or absence of a second symbol. A programmable controller loader having a configuration for outputting a signal. 3. The programmable controller loader according to claim 1, further comprising a third switch at a position where the programmable controller loader can be operated with an index finger when the programmable controller loader is mounted on a palm.
When the index finger comes into contact with or is pressed against the switch, the switch is in an operating state, and when the index finger is released, the switch is in a non-operating state, and outputs different binary signal values depending on the operating state and the non-operating state. A second flip-flop circuit is provided which changes the value of the binary signal to be output when the switch is changed from the non-operated state to the operated state and then returned to the non-operated state, and the output of the second flip-flop circuit is binary. When the value of one of the signals is one, the signal indicating the presence or absence of the first symbol or the second symbol output by the first switch group is a signal effective for programming, and the output of the second flip-flop circuit is 2 The first value output by the first switch group in the case of the other value of the value signal
A programmable controller loader, wherein the signal indicating the presence or absence of the input of the symbol or the second symbol is an effective signal for displaying the operation state of the programmable controller.