JPS6218042B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is provided in general-purpose equipment that can perform various types of work, and transmits and receives signals to and from an external device that performs the work, and causes the device to perform a predetermined work according to a fixed procedure. The present invention relates to a signal discriminating circuit that can easily and arbitrarily and selectively rearrange the circuits in a control circuit for use in a computer, and thereby exhibits versatility.

When making an external device perform work according to a certain procedure in general-purpose equipment that performs various types of work, such as an industrial robot, interlocks are required between the external device and the operation at each point related to the work procedure. It is necessary to provide a control circuit for transmitting and receiving signals. Conventionally, this control circuit did not determine the work procedure until the work was concretely determined, so when the work content was concretely determined, the priority of the signals was considered according to the procedure of each work according to each work. Each signal was individually created using a dedicated line. Therefore, the circuit configuration of the control circuit must be designed each time according to the various tasks, and once the circuit configuration has been determined and actually manufactured, it cannot be easily changed. Was.

In view of the above-mentioned problems, the present inventors have created the present invention to effectively solve the problems.

The purpose of the present invention is to enable the user to easily rearrange the wiring connections according to the work, eliminate the need for circuit design each time, improve work efficiency, and provide a general-purpose product that can handle various work. It is an object of the present invention to provide a signal processing circuit in a control circuit of general-purpose equipment having the following characteristics.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a matrix board, in which points a, b, c, and d are arranged in horizontal columns, and signal paths 2, 3, and 3 for transmitting various interlock signals are arranged in vertical columns.
4 and 5 are arranged. A point means a certain point in time when an external device (not shown) performing an operation performs an operation, and each point a to d is arranged according to a temporal order. You can select any of signal paths 2 to 5 for each point,
Various operations determined by the type of signal on the path are specified for the external device or the like. The intersection points 6, 7, 8, and 9 of the vertical lines and horizontal lines shown in the matrix board 1 indicate the setting of pin elements, and by appropriately determining the set position of the pin elements, the signal path can be selected for each point. It is possible to do this arbitrarily. The matrix board 1 as described above outputs a predetermined command signal based on each signal path according to the transition of points. The content of the output command signal is arbitrarily determined depending on how the pin elements are set.

In each of the above signal paths, the signal enters one of the inputs of the exclusive OR circuit 10, 11, 12, 13 corresponding to the respective signal path, and the other input to the exclusive OR circuit 10, 11, 12, 13,
After being amplified by 16 and 17, it is used as an energizing signal for operating coils 18, 19, 20, and 21 of the electromagnetic relay. A command in the form of a command signal is issued to the other external device through each operating coil, and the contacts 18a, 19a, 20a, and 21a are turned on and off.

Reference numeral 22 indicates a group of elements for generating a signal from an external device, a so-called external signal. Reference numerals 23 and 24 are limit switches, 25 is a shorting element, and 26 is a push button. Each element has a corresponding relationship with one of the signal paths as described below, and via respective relay contacts 18a, 19a, 20a, 21a, as well as respective NOT circuits 27, 28, 29, 3.
0 to the other input of the exclusive OR circuit 10, 11, 12, 13 to which the corresponding signal path is connected.

In the above, relay contacts 18a, 19a, 20
a, between the terminals where 21a are provided, that is, A-A',
The circuit is constructed so that a jumper terminal (shorting element) can be detachably provided between B-B', C-C', and D-D'. In the figure, the state in which the jumper terminals are provided is schematically indicated by 31 and 32. The user can decide whether to provide a jumper terminal or not.

All output signals of exclusive OR circuits 10, 11, 12, and 13 are input to AND circuit 33. AND
The circuit 33 sends a signal (1 level) to advance the step according to a change in the input state to a step increment circuit (not shown).

The operation of the above circuit will be explained below.

In this embodiment, the signal path 2 outputs a command signal to check whether the external device is in an unclamped state, and the signal path 3 outputs a command signal to cause the external device to perform clamping. A simple unidirectional command signal is issued by the signal path 4,
It is assumed that a signal sent from an external device is output through the signal path 5. Also, the limit switch 23 is for confirming unclamping,
The limit switch 24 is turned on if it is in an unclamped state, and the limit switch 24 is for checking the clamping, and is turned on if it is in a clamped state.

Based on the set states of the pin elements shown on the matrix board 1, the operation will be explained according to the transition of points. First, at point a, when a command signal (1 level) for unclamping confirmation is issued from the signal path 2, unclamping is confirmed with the limit switch 23 on, and at the same time the output of the exclusive OR circuit 10 changes ( 0 level → 1 level), the AND circuit 33 outputs a signal (1 level) for advancing the step. Here, the jumper terminal 31 is provided between the relay contacts A and A' to short-circuit the points b and
This is because if an unclamped state occurs when the step is advanced to c, the output of the AND circuit 33 is set to 0 level so that the state can be detected. Next, when a command signal (1 level) for clamp operation is issued from the signal path 3 at point b,
After that, when the external device operates the clamp and turns on the limit switch 24, the signal related to the clamp state is exclusively transmitted through the relay contact 19a and the NOT circuit 28.
Enters OR circuit 11. When the limit switch 24 is turned on, the limit switch 23 is turned off. During the above operation, the output of the exclusive OR circuit 11 changes (1
level → 0 level → 1 level)
The AND circuit 33 outputs a signal to advance the step. Here, a jumper is not provided between the relay contacts B and B' like the one between the relay contacts A and A' mentioned above, but this can be done by confirming that the external device is clamped at point b. This is because there is no need to confirm at this point.
Note that if the signal is not clamped at point b, the AND circuit 33 cannot output a 1-level signal, and it is possible to detect that the signal is not clamped based on this state. Next, at point c, a simple command signal that does not require confirmation is issued from the signal path 4 while maintaining the clamped state. In this case, no response signal from the external device is input to the input of the exclusive OR circuit 12. During that time, the output state of the exclusive OR circuit 12 changes (1 level →
0 level → 1 level), the AND circuit 33 outputs a signal to advance the step. The reason why there is no jumper between the relay contact terminals C and C' is that at point C, the operation can be performed by simply outputting a signal to the outside, such as lighting a lamp (not shown) or sounding a buzzer. This is because it does not require confirmation. Therefore, in this embodiment, a relay contact 20a is provided so that a predetermined operation at the C point can be confirmed. Then, at the next point d, the same operation as above is performed based on the command signal of the selected signal path. A jumper 32 is provided between the relay contact terminals D and D' so that the apparatus can be stopped by turning on the push button 26 at all times, regardless of whether the relay contact 21a is on or off. Therefore, this relay contact 2
No pin is inserted into the signal path 5 corresponding to 1a.

As mentioned above, if the unclamped state occurs when the clamped state is originally required, the limit switch 23 turns on,
Due to the presence of the jumper terminal 32, the ON signal from the limit switch 23 enters the exclusive OR circuit 10 and changes its output state regardless of the operation of the electromagnetic relay, so that the above state is detected by the change in the output of the AND circuit 33. I can do it.
Therefore, in the circuit described above, there is no need to generate a special command signal at point c (by setting pin element 34) to confirm the clamp condition.

Also, when the push button 26 is artificially pressed to turn it on, the presence of the jumper terminal 32 causes the on signal to become exclusive OR regardless of the operation of the electromagnetic relay.
Since it is input to the circuit 13 and changes its output,
As a result, the above state can be detected by the change in the output of the AND circuit 33.

When the work is changed, by changing the set position of the pin elements on the matrix board 1, it is possible to change the order in which the command signals are generated to correspond to the work concerned.

Furthermore, by providing the jumper terminals at locations corresponding to the priorities of the response signals, it is possible to realize the priorities of the signals determined based on the scheduled work.

As mentioned above, by changing the set position of the pin elements on the matrix board 1 and changing the mounting of the jumper terminals, the user can rearrange the circuit configuration of the control circuit of the general-purpose equipment each time according to the work. It is possible to generate a necessary signal at each point in accordance with the work procedure, and to determine the signal with the highest priority, which provides effects that have not been seen in the past.

In the above embodiment, the number of signal paths and points on the matrix board 1 related to command signals is small, but the invention is not limited to this, and is generally applicable to large-scale devices with a large number of signal paths and points. Of course it is possible. Also, in this case, the number of exclusive OR circuits increases in accordance with the number of signal paths.

As is clear from the above description, according to the present invention, by incorporating a signal discrimination circuit that can arbitrarily and selectively change the circuit configuration into the control circuit of general-purpose equipment, the user can It is possible to easily configure a control circuit to perform the work, thereby eliminating circuit design each time, and improving work efficiency.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention and is a connection diagram of a signal discrimination circuit. In the drawing, 1 is a matrix board, 2, 3,
4, 5 are signal paths related to command signals, 6, 7, 8,
9, 34 are pin elements, 10, 11, 12, 13 are exclusive OR elements, 18, 19, 20, 21 are relay operating coils, 18a, 19a, 20a, 2
1a is a relay contact, and 31 and 32 are jumper terminals.

Claims (1)

[Claims] 1 In the control circuit of general-purpose equipment that sends and receives signals to and from an external device that performs work and causes the external device to perform work according to a fixed procedure, there is a matrix board that outputs command signals that can be changed arbitrarily, and An exclusive OR element that inputs the command signal of the Tx board and a response signal from an external device, a contact that is turned on and off by the command signal provided in the signal path to which the response signal from the external device is sent, and this contact A signal discrimination circuit comprising a shorting element arranged in parallel and detachable.