JPH0898262A - I/o repeater - Google Patents

Abstract

PURPOSE: To facilitate the operation confirming work of input/output equipment by connecting a desired signal line to a power source terminal of specific potential by turning on a desired switch out of plural switches provided in accordance with the signal line of each input/output equipment. CONSTITUTION: This I/O repeater 03 relays a signal between an I/O interface substrate 012 and each input/output equipment 02, and in addition to that, supplies a power source to each equipment 02. Moreover, the repeater 03 is provided with dip switches U1-U3, and fixes the terminal I/O of desired equipment and a flat cable 013 corresponding to the terminal I/O at specific logical levels by turning on desired dip switches S1-S8, S11-S18 and S21-S28. Therefore, it is possible to drive the desired equipment 02 individually and to output a simulation signal equivalent to the signal from the desired equipment 02 only by turning on those dip switches, which facilitates the confirming operation of a fault, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an I / O relay device.

[0002]

2. Description of the Related Art Currently, in various automatic equipment such as a manufacturing line, input / output devices for loads such as a plurality of sensors and actuators used for detecting the position of a product are controlled by a computer. Signal transmission / reception between a computer and each input / output device is performed via an I / O interface board manufactured according to the target input / output device. In such a case, it is usually complicated to directly connect the signal line of each input device to the I / O interface board. Therefore, each of the above-mentioned input / output devices is connected between the I / O interface board and each input / output device. An I / O relay device that relays a signal from an output device and a control signal to each of the input / output devices is used. As shown in FIG. 4a, the I / O relay device 41 connects the signal lines 43 from the individually extended input / output devices 42 to one side and connects the signal lines 43 to the other side of the flat cable 44 respectively. Is a connector that makes one-to-one conduction with each other, and specifically has a configuration as shown in FIG. 4b, and a terminal 41 that connects each signal line from each input device.
1 and these are connected to respective terminals 413 of a connector 412 for connecting the flat cable 44. As a result, the signal line from each input / output device is connected to the I / O interface board 45 in the form of the flat cable 44.
It is connected to the. In addition, the power supply 46 of each input / output device 42
Is the I / O interface board 45, the I / O relay device 4
It is provided separately from 1. The CPU 47 controls the I / O interface board 45.

[0003]

In the automatic equipment as described above, normal operation cannot be performed due to, for example, a failure of each input / output device, a computer failure, or a bug of a program to be executed. Problems such as missing may occur. In such a case, in order to identify the cause, it is necessary to check whether each input / output device is faulty, operate these input / output devices individually, and to check whether there is a bug in the program. It is necessary to fix the output signal line of each input / output device to a specific logic level and generate a simulation signal to confirm whether the output signal of each input / output device operates normally. is there.

However, in the prior art, in order to operate each input / output device, the signal line of the target input / output device at the end of the I / O relay device is set to a specific potential corresponding to a specific logic level, for example, Must be connected to a grounded common wire (not shown). That is, in the structure shown in FIG. 4a, it is necessary to remove the signal line connected to the terminal 411 of the I / O repeater 41 and rewire it so as to short-circuit the common line. Also, when sending a simulated signal corresponding to a signal from an input / output device to a computer, wiring work is required to connect the input terminal of the I / O relay device to a specific potential, which causes the above-mentioned problem. The operation confirmation work for locating was not complicated.

Therefore, an object of the present invention is to provide an I / O relay device which facilitates the operation confirmation work of the input / output device and the operation confirmation work of the side which sends a control signal to the input / output device.

[0006]

A signal from each of the input / output devices and an I / O interface board having signal lines to the input / output devices such as a plurality of sensors or loads and the above-mentioned input / output devices are provided. In an I / O relay device that relays control signals to each of the input / output devices, a power supply terminal to each of the input / output devices and each of the signal lines are provided so as to individually identify each of the signal lines. The above object is achieved by providing a plurality of switches that can be set to a specific logic level by connecting to the power supply terminal of a potential.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An I / O relay apparatus according to an embodiment of the present invention will be described next. FIG. 1 is an explanatory diagram showing an outline of automatic equipment using the I / O relay device of the present example. In FIG.
Reference numeral 1 denotes a computer, which controls an input / output device described later to execute a desired function of the automatic equipment. Computer 0
Reference numeral 1 denotes a control board 011 provided with a CPU, a RAM, a ROM, etc., which controls the entire automatic equipment, and a CPU,
A RAM, a ROM, etc. are provided, which receives control signals from the control board 011 and issues control signals to individual input / output devices, and outputs statuses such as driving status and data from the input / output devices to the control board. I / O output to 011
Interface board 012. The I / O interface board 012 uses signal lines to each input / output device (34 signal lines are used in this example, which will be described later, and among these, 24 signal lines are used to connect to the input / output devices. Is connected to an I / O relay device, which will be described later, through which a control signal for the input / output device is sent and a signal from the input / output device is received.

Reference numerals 02 to 02 denote input / output devices such as sensors or loads, which send signals to the computer 01 or are controlled by the computer 01 to execute desired functions of the automatic equipment. The input / output device 02 includes power supply terminals + and − for supplying power, and an input / output terminal I as an input terminal or an output terminal.
/ O (for the sake of convenience, the input / output device 02 indicates both a sensor that sends an output to the control side and a load that functions according to the output from the control side, and the input terminal and the output terminal are both shown as input / output terminals. Are provided). These input / output terminals I / O are connected to an I / O relay device described later by signal lines SL to SL. Further, the power supply terminals + and − are connected to the I / O relay device by power supply lines PL and NL.

Reference numeral 03 denotes an I / O relay device, which is provided between the I / O interface board 012 and each input / output device 02.
In the same manner as the conventional one, the signal from each input / output device 02 and the control signal to each input / output device 02 are relayed, and power is supplied to each input / output device 02. Furthermore, I / O relay device 0
Reference numeral 3 denotes a DIP switch unit U1 to U3 having a plurality of DIP switches, which will be described later. The desired DIP switch is an input / output terminal I / O of a desired input / output device 02 and a flat cable 013 corresponding thereto. The signal line of is fixed to a specific logic level. As a result, when some problem occurs in the automatic equipment, the desired input / output device 02 can be individually driven by simply turning on the dip switch without performing a troublesome wiring work as in the related art, and A simulated signal corresponding to the signal from the input / output device 02 can be output to the I / O interface board 012, whether any of the input / output devices has a failure, or whether there is a bug in the computer program. This is to facilitate the confirmation work.

Next, the configuration and operation of this I / O relay device 03 will be described in detail. The circuit configuration of the I / O relay device 03 is
As shown in FIG. 2, in the figure, J1 to J3 are input / output device-side connector parts, to which the input / output device 02 is connected. Specifically, each of them is provided with connection terminals 1 to 26, which are arranged as shown in FIG. 3, and +, − and I / O shown in FIG. +/- or input / output terminal I
Attributes such as "/ O" are shown. That is, the connection terminals 1, 2, 11, 12, 13, 14, 2 marked with +
3 and 24 are connected to the power supply terminal + V (for example, + 25V), and the connection terminals 3, 4, 9, 1 marked with −
0, 15, 16, 21 and 22 are connected to the power supply terminal GND (for example, 0V). Also, the connection terminals 1, 2, 11, 12, 13, 14, 2 marked with these +
Connection terminals 3, 4, 9, 1 marked with 3, 24 and-
0, 15, 16, 21, and 22 are power supply lines PL and N, respectively.
It is connected to the power supply terminals + and − of the input / output device 02 via L. Also, the connection terminals 5-8, 1 with I / O added
Input / output terminals of each input / output device 02 are connected to 7 to 20 via a signal line SL. As a result, for example, the power supply lines PL,
The power supply terminals + and − of the input / output device are connected via the NL to supply power to the input / output device 02, and the input / output terminal I / O is connected to the connection terminal 5 to connect with the input / output device 02. Signal transmission (or reception) is performed between them. That is, each of the input / output device side connector portions J1 to J3 can be connected to eight input / output devices 02. The connection terminals 25 and 26 are spare terminals and are floating here. J4 is an I / O interface side connector section. The I / O interface side connector J4 includes connection terminals I1 to I34, and these connection terminals are connected to the signal lines (not shown in detail for convenience) of the flat cable 013. As a result, signals are transmitted (or received) between the I / O interface board 012 and the I / O relay device 03.

Further, the connection terminals I1 to I8 are respectively the connection terminals 5 to 8 and 17 to 20 of the input / output device side connector portion J1.
Signal is transmitted (or received) to / from the input / output device 02 connected to the connection terminals 5 to 8 and 17 to 20 of the input / output device side connector section J1.

The signal transmission (or reception) operation will now be described in detail. The connection terminal I9 is connected to the power supply terminal + V, and the connection terminal I9 is connected via resistors R1 to R8 and light emitting diodes LE1 to LE8. Are respectively connected to the connection terminals I1 to I8, and the respective connection terminals I1 to I8
I8 is normally "H". Here, for example, I /
When a signal for setting the connection terminal I1 to “L” is transmitted from the O interface board 012, the diode LE1 lights up and the input / output device 02 connected to the connection terminal 5 of the input / output device side connector J1 is set to “L”. Will be received. Alternatively, when the input / output device 02 connected to the connection terminal 8 of the input / output device side connector J1 transmits "L", the diode LE5 lights up and the connection terminal I5 of the I / O interface side connector J4 is "L".
And is output to the I / O interface board 012.

Like the connection terminals I1 to I8, the connection terminals I11 to I18 are connected to the connection terminals 5 to 8 and 17 to 20 of the input / output device side connector J2, respectively.
The connection terminals I21 to I28 are connected to the input / output device side connector J
3 are connected to the connection terminals 5 to 8 and 17 to 20. Further, like the connection terminal I9, the connection terminal I19 is connected to the power supply terminal + V, and is also connected to the connection terminals I11 to I18 via the resistors R11 to R18 and the light emitting diodes LE11 to LE18, respectively, and is similarly connected. The terminal I29 is connected to the power supply terminal + V and the resistance R
21 to R28 and light emitting diodes LE21 to LE28
Are connected to the connection terminals I21 to I28, respectively. As a result, the connection terminals I11 to I18 are respectively connected to the connection terminals 5 to 8 and 17 to the input / output device side connector J2.
20 and the above-mentioned signal transmission (or reception) operation is performed, and the connection terminals I21 to I28 transmit the above-mentioned signal to the connection terminals 5 to 8 and 17 to 20 of the input / output device side connector J3 (respectively). Or receive) operation.

The connection terminals I10, I20, I30 and the connection terminals I31 to I34 are spare terminals, and are floating here. In particular, the connection terminal I10,
I20 and I30 are connection terminals I1 to I8 and I1, respectively.
When 1 to I18 and I21 to I28 are inputs of the I / O interface board 012, they are set to floating, and when they are outputs of the I / O interface board 012, they are connected to the power supply terminal GND.

U1 to U3 are dip switch parts,
These DIP switch units U1 to U3 are respectively configured by DIP switches S1 to S8, S11 to S18, and S21 to S28.
Equipped with. These dip switches S1 to S8 and S11 to
One terminal of S18 and S21 to S28 is the power supply terminal GND
And the other terminals are respectively connected to the connection terminals I1 to I8, I11 to I18, I21 to I of the second connector.
28 is connected.

In other words, the DIP switch S1
The other terminals of S8 to S8 are the connection terminals 5, 6, 7, 8, 17, 18, 19, of the input / output device side connector J1, respectively.
20 of the dip switches S11 to S18 are connected to the connection terminal 5 of the input / output device side connector J2,
6, 7, 8, 17, 18, 19, 20, and those of the dip switches S21 to S28 are connected terminals 5, 6, 7, 8, 17, 1 of the input / output device side connector J3, respectively.
It is connected to 8, 19, and 20.

With the above configuration, by turning on the desired DIP switch, the input / output terminal I / O of the desired input / output device 02 connected to the input / output device side connector is set to "L". , "L" for the connection terminal of the second connector corresponding to the input / output device 02
And can be monitored with a light emitting diode. That is, for example, when the dip switch S1 is turned on, the input / output device side connector J1
The connection terminal 5 and the connection terminal I1 of the I / O interface side connector portion J4 are connected to the power supply terminal GND and become "L". As a result, the input / output device side connector J
The input / output terminal I / O of the input / output device 02 connected to the first connection terminal 1 becomes "L". here,
If this input / output device is a load, it is driven and this logical level "L" is output to the I / O interface 012 as its status. In addition, this input / output device 02
Is a sensor or the like, this logic level "L" is output to the I / O interface 012 as a simulation signal. At the same time, the light emitting diode LE1 is turned on. Similarly, when the DIP switch S2 is turned on, the connection terminal 6 of the input / output device side connector section J1 and the connection terminal I2 of the I / O interface side connector section J4 are connected to the power supply terminal GND and become "L". As a result, the input / output terminal I / O of the input / output device 02 connected to the connection terminal 2 of the input / output device side connector J1 becomes "L",
The input / output device 02 is driven and its status is output to the I / O interface 012, or a simulation signal is output to the I / O interface 012. At the same time, the light emitting diode LE2 is turned on. As described above, by turning on the desired DIP switch, the desired input / output device 02 is driven or a simulated signal corresponding to the signal from the desired input / output device 02 is output to the I / O interface 012. be able to. Therefore, as described above, when some problem occurs in the automatic equipment, by turning on the desired DIP switch, the desired input / output device 02 can be individually driven or the desired input / output device 02 can be operated. A simulated signal corresponding to the signal can be generated, and it becomes possible to easily perform a confirmation work as to whether or not any one of the input / output devices has a failure and whether or not the computer has a failure.

Although the dip switch is used in the above embodiment, it may be replaced with a toggle switch or a push button type switch.

[0019]

According to the present invention, by turning on a desired switch among a plurality of switches provided corresponding to the signal lines of each input / output device, the desired signal line is supplied with a power supply of a specific potential. Since it can be set to a specific logic level by connecting to the terminal, each input / output device can be driven individually, or a simulated signal corresponding to a signal from a desired input / output device can be output to the I / O interface board. Therefore, it becomes easy to confirm the operation of the input / output device and confirm the operation of the side that sends the control signal to the input / output device.

Further, since the power supply of the specific potential also serves as the power supply of the input / output device, there is no need to provide another power supply for the input / output device, and the effect of saving space can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an electric circuit diagram showing a configuration of a main part of FIG.

FIG. 3 is an explanatory diagram showing a configuration of a main part of FIG.

FIG. 4 is an explanatory diagram showing a configuration of a conventional technique.

[Explanation of symbols]

 012 I / O interface board 02-02 Input / output device 03 I / O relay device S1 to S8 DIP switch (switch) S11 to S18 DIP switch (switch) S21 to S28 DIP switch (switch) GND power supply terminal I1 to I8 connection terminal (Signal line) I11 to I18 connection terminal (signal line) I21 to I28 connection terminal (signal line)

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area H04Q 1/20

Claims (1)

[Claims] 1. A signal from each input / output device and each input / output between an I / O interface board having signal lines to the input / output device such as a plurality of sensors or loads, and each input / output device. In an I / O relay device that relays a control signal to a device, the power supply terminal to each of the input / output devices and the signal line are provided so as to correspond to each of the signal lines. An I / O relay apparatus comprising: a plurality of switches that can be set to a specific logic level by connecting to a terminal.