KR20100063517A - Apparatus for duplicating multi-point input and output modules - Google Patents

Abstract

PURPOSE: An apparatus for duplicating multi-point input and output modules is provided to reduce configuration costs by integrating the input-output points of the first and the second input-output modules with an Y-connection connector. CONSTITUTION: An input-output duplicating unit comprises at least more than one first input-output modules and second input-output modules. The Y-connection connector is integrated with an input-output points of the first and the second input-output modules. A first and a second data control units(230,240) turn the input-output module in a standby state into a running state. A first and a second controllers(200,210) enable the input-output module to process data inputted from the outside.

Description

Apparatus for duplicating multi-point input and output modules}

The present invention relates to a duplication apparatus for a multipoint input / output module. More specifically, the present invention relates to a redundancy device for a multipoint input / output module that operates by dualizing an input / output module in the field of a programmable logic controller (PLC) system or a distributed control system (DCS).

Various modules and devices have been introduced to duplicate input and output points for input and output of digital or analog data. The redundancy of the input / output points is that one input / output point inputs / outputs digital or analog data in a run state, and the other input / output point waits in standby, and a failure occurs in the input / output point in the run state. In this case, the standby input / output point operates in the run state to input / output predetermined data.

However, the redundant modules or devices are suitable when the number of I / O points is small, and when the system is applied to a large system, the circuit configuration including the redundant switching device is mostly complicated, so a lot of surplus components are used or the production cost of the module. Is increased, and there is a problem that the space of the printed circuit board is insufficient to reduce the number of input / output points, which makes it difficult to apply the multi-point input / output module.

On the other hand, the PLC system or distributed control system duplicates the I / O unit only for a process which is fatally dangerous due to the cost of a large amount of I / O points, and has a separate redundant switching unit to duplicate the I / O.

However, the critical process points do not exist only in a certain area, but they exist in a wide range, and the number of points varies widely. Therefore, there are many difficulties in terms of the unit cost of a product to input a redundant input / output unit having a high installation cost to the process.

Therefore, in most processes, I / O module is composed at a single risk, and hot swapping function is used as a countermeasure for redundancy in case of failure of I / O module. Doing.

However, in case of a failure of the input / output module, the operator must go to the site and replace the input / output module. Therefore, the replacement delay time of the failed input / output module and the risk of malfunction during the replacement can have a fatal effect on the process.

As the size of PLC system or distributed control system is getting bigger and the process control range is widened widely, the necessity of the system to secure the reliability level out of the level of satisfying the control function is urgently needed. The need for simple and inexpensive redundancy is increasing.

Therefore, a problem to be solved by the present invention is to provide a duplication apparatus of a multipoint input / output module that can easily duplicate a multipoint input / output module.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above may be clearly understood by those skilled in the art to which the present invention pertains. There will be.

The redundancy apparatus of the multi-point input / output module of the present invention includes at least one first input / output module and at least one second input / output module for inputting and outputting predetermined data from the outside, and the first input / output module and the second input / output module are paired. And an input / output redundancy unit having a Y-connected connector coupled to an input / output point, and communicating with each other, such that one input / output module of the paired first and second input / output modules inputs and outputs predetermined data in a run state. The first and second data control units for maintaining the standby state, the first and second data control unit to operate the standby input / output module in the run state when the input / output module in the run state occurs in a run state Characterized in that configured to include.

In addition, the redundant device of the multi-point input and output module of the present invention provides the predetermined data transmitted by the first input and output module and the second input and output module, the first input and output module and the second input and output module input from the outside And a first control unit and a second control unit for processing the predetermined data, wherein the first control unit and the second control unit communicate with each other while one control unit is configured to perform input / output of the predetermined data. The control unit waits in the standby state, and when the controller in the run state occurs, the controller in the standby state operates in a run state to control input / output of predetermined data.

The digital data input unit for inputting digital data from the outside in the plurality of first and second input / output modules provides a plurality of photocouplers for insulating and inputting digital data applied to the plurality of digital data input points of the Y-connected connector from the outside. It is characterized by including.

The digital data input unit may further include a constant voltage diode for removing a noise signal below a predetermined threshold voltage between the plurality of digital data input points of the Y-connected connector and the plurality of photo couplers.

The digital data output unit which transmits predetermined digital data to the outside by the plurality of first and second input / output modules insulates the plurality of digital data to be transmitted to the outside provided by the digital data provider to output a plurality of digital data of the Y-connected connector. It characterized in that it comprises a plurality of photocoupler output to the output point.

The digital data output unit may include a plurality of relay switches provided between the output terminals of the plurality of port couplers and the plurality of digital data output points of the Y-connector connector and the run state control signals output by the digital data providing unit. And a run state driving unit for connecting the plurality of relay switches.

The digital data output unit may input digital data output to a plurality of digital data output points of the Y connection connector to the digital data providing unit so that the digital data providing unit can check whether the digital data is transmitted.

The plurality of relays are provided between the plurality of digital data output points of the Y-connected connector and the plurality of input terminals of the analog data processing unit to input analog data from the outside in the plurality of first and second input / output modules. And a run state driver for connecting the plurality of relay switches according to a run state control signal provided by the analog data processor.

The analog data output unit for outputting analog data from the plurality of first and second input and output modules to the outside and a plurality of output terminals of the analog data providing unit for providing analog data to be transmitted to the outside and a plurality of digital data output points of the Y connection connector And a run state driver for connecting the plurality of relay switches according to a run state control signal provided by the analog data provider.

The redundancy device of the multipoint I / O module of the present invention combines the I / O points of the paired first and second I / O modules with Y-connected connectors, thereby significantly reducing the component cost compared to the existing redundant configuration, and providing a redundant function. Can greatly contribute to the stability of the system operation.

The following detailed description is only illustrative, and merely illustrates embodiments of the present invention. In addition, the principles and concepts of the present invention are provided for the purpose of explanation and most useful.

Accordingly, various forms that can be implemented by those of ordinary skill in the art, as well as not intended to provide a detailed structure beyond the basic understanding of the present invention through the drawings.

1 is a block diagram schematically showing a configuration of a general redundancy apparatus. Here, reference numeral 100 denotes a first control unit, and reference numeral 110 denotes a second control unit. The first and second controllers 100 and 110 communicate with each other while controlling one of the input and output of predetermined data in a run state, and the other in the standby state and then in a control unit in a run state. When a failure occurs, the other control unit in the standby state operates in a run state to control input / output of predetermined data.

For example, the first control unit 100 controls input / output of predetermined data in a run state, and the second control unit 110 operates in a standby state. In this state, when a failure occurs in the first control unit 100 operating in the run state, the second control unit 110 in the standby state operates in the run state to control input / output of predetermined data.

Reference numeral 120 denotes a first input / output unit, and reference numeral 130 denotes a second input / output unit. One of the first and second input / output units 120 and 130 inputs and outputs predetermined data to the outside under the control of the first or second control unit 100 and 110 in a run state, and One maintains the standby state, and when the input / output unit in the run state fails, the standby input / output unit enters the run state and inputs and outputs predetermined data to the outside.

For example, initially, the first input / output unit 120 operates in a run state to input / output predetermined data to the outside under the control of the first or second control units 100 and 110, and the second input / output unit The 130 maintains a standby state, and when a failure occurs in the first input / output unit 120, the second input / output unit 130 in a standby state operates in the run state so that the first or second operation is performed. Predetermined data is input and output to the outside under the control of the controllers 100 and 110.

The first and second input / output units 120 and 130 include first and second data control modules 122 and 132 and a plurality of first and second input / output modules 124 and 134, respectively. The first and second data control modules 122 and 132 communicate with each other and communicate with the plurality of input / output modules 124 and 134 while the first and second data control modules 122 and 132 communicate with each other. The controller 130 determines whether a failure has occurred in the controller 130, and controls a plurality of input / output modules 124 and 134 under the control of the first or second controllers 100 and 110 to input and output predetermined data to the outside.

For example, when the first input / output unit 120 is in a run state, the first data control module 122 controls the plurality of input / output modules 124 under the control of the first or second control units 100 and 110. Control to input and output the predetermined data to the outside. When the second input / output module 130 is in the run state, the second data control module 132 controls the plurality of input / output modules 134 according to the control of the first or second control units 100 and 110. Input and output data to the outside.

Reference numeral 140 denotes a redundant switching unit. The redundant switching unit 140 includes a plurality of switches 142, and a plurality of input / output modules 124 of the first input / output unit 120 are connected to one fixed terminal a of the plurality of switches 142. The input / output terminals are connected, and the input / output terminals of the plurality of input / output modules 134 of the second input / output unit 130 are connected to the other fixed terminal b of the plurality of switches 142, and the movable terminal of the switch 142 is connected. Is connected to an external communication device (not shown).

The plurality of switches 142 control the first data control module 122 of the first input / output unit 120 or the second data control module 132 of the second input / output unit 130 operating in a run state. As a result, the movable terminal is switched to one fixed terminal (a) or the other fixed terminal (b).

For example, when the first input / output unit 120 is in a run state, the movable terminals of the plurality of switches 142 are connected to one fixed terminal a under the control of the first data control module 122. When the input / output unit 130 is in the run state, the movable terminals of the plurality of switches 142 are connected to the other fixed terminal b under the control of the second data control module 132.

The duplexing device having such a configuration operates any one of the first control unit 100 and the second control unit 110, the first input / output unit 120, and the second input / output unit 130 in a run state. The other is in the standby state.

Here, it is assumed that the first control unit 100 and the first input / output unit 120 are in a run state.

When the first input / output unit 120 is in the run state, first, the plurality of switches 142 of the redundant switching unit 140 are controlled so that the movable terminals of the switches 142 are connected to one fixed terminal a.

In this state, when outputting predetermined data to an external communication device, the first control unit 100 transmits data among the plurality of input / output modules 124 provided in the first input / output unit 120 in a run state. The predetermined data is provided to the input / output module 124 to which the corresponding external communication device is connected, and the first data control module 122 is controlled to transmit the predetermined data.

Then, the first data control module 122 of the first input / output unit 120 controls the corresponding input / output module 124 to output the predetermined data, and the output predetermined data is a redundant switching unit ( Through the switch 142 of the 140 is transmitted to the external communication device.

The predetermined data transmitted by the external communication device is input to the input / output module 134 through the switch 142 of the redundant switching unit 140.

Then, the data control module 123 controls the input / output module 134 to input the received predetermined data to the first control unit 100, and the first control unit 100 processes the input predetermined data. do.

In this state, the first data control module 122 of the first input / output unit 120 operating in the run state and the second data control module 132 of the second input / output unit 130 in the standby state may mutually If a failure occurs in the first input / output unit 120 while performing data communication to determine whether a failure occurs that prevents input / output of predetermined data, and a failure occurs in the first input / output unit 120 in a run state. In the standby state, the second input / output unit 130 operates in the run state.

As described above, when the second input / output unit 130 operates in the run state, the second input / output unit 130 first controls the plurality of switches 142 of the redundant switching unit 140 so that the movable terminal has the other fixed terminal ( b).

In addition, the second input / output unit 130 may input / output predetermined data with an external communication device by the data control module 132 controlling the plurality of input / output modules 134 under the control of the first control unit 100. .

Here, the operation of the data control module 132 to control the plurality of input / output modules 134 to input / output predetermined analog data or digital data with an external communication device is the same as that of the first input / output unit 120. Omit.

In addition, the first control unit 100 operating in the run state and the second control unit 110 in the standby state also determine whether a failure has occurred in the first control unit 100 while communicating with each other, and the first control unit ( When a failure occurs in 100, the second control unit 110 in the standby state operates in a run state to control input / output of predetermined data.

Here, the operation of inputting / outputting predetermined data with the outside by controlling the first input / output unit 120 or the second input / output unit 130 in the run state as described above is performed by the first control unit 100. ) Is the same as the operation of inputting / outputting predetermined data with the outside by controlling the first input / output unit 120 or the second input / output unit 130, and thus a detailed operation is omitted.

Since the redundancy device is configured to switch redundancy switching, the I / O points that must be used as a single system must also be operated as redundancy points in the system structure, thereby reducing the absolute number of points accommodated by the I / O shelf.

In addition, the first and second data control modules 122 and 132 receive a redundant switching command from both the first control unit 100 and the second control unit 110, and there is a communication error or the first control unit 100 and the second control unit 110. Mistakes in the situation due to the various cases of) may cause serious consequences to the process if both the first and second data control modules 122, 132 are issued a run command.

And since the redundant switching unit 140 is composed mostly of relays, there is no way to detect this despite the possibility of various failures, and to detect this, a configuration of a separate additional circuit is required.

If a failure occurs even with only one of the redundant I / O points, the entire I / O unit must be switched to redundancy, resulting in operational burden.

In addition, if there are many redundancy points, multiple redundancy switching units must be installed, which may result in a lack of mounting space, and process points requiring redundancy do not exist only in a certain area, but exist in a wide range. There is a problem of cost increase that requires the installation of multiple units and redundant switching units, and additional devices are needed to duplicate the input and output units.

2 is a block diagram showing the configuration of a preferred embodiment of the duplexing apparatus of the present invention. Here, reference numeral 200 denotes a first control unit, and reference numeral 210 denotes a second control unit. The first and second controllers 200 and 210 communicate with each other, one of them controls the input / output of predetermined data in a run state, and the other is in a standby state and fails in the controller of the run state. When this occurs, the other control unit in the standby state operates in the run state to control input / output of predetermined data.

For example, the first control unit 200 controls input / output of predetermined data in a run state, and the second control unit 210 operates in a standby state. In this state, when a failure occurs in the first control unit 200 operating in the run state, the second control unit 210 in the standby state operates in the run state to control input / output of predetermined data.

Reference numeral 220 denotes an input / output redundancy unit. The input / output redundancy unit 220 includes a plurality of first input / output modules 222 and a plurality of second input / output modules 224. The plurality of first input / output modules 222 and the plurality of second input / output modules 224 input and output predetermined data provided by the first or second control units 200 and 210 and data input from the outside. The plurality of first input / output modules 222 and the second input / output module 224 are alternately arranged so that one first input / output module 222 and one second input / output module 224 are paired, and the pair The Y connection connector 226 is coupled to the input / output points of the first input / output module 222 and the second input / output module 224.

For example, as shown in FIG. 3A, the Y connection connector 226 includes one connector 226a on one side, and two connectors 226b and 226c on the other side, as illustrated in FIG. 3B. The provided connectors 226a, 226b, and 226c are connected in parallel to each other, and the other side of the Y-connected connector 226 is connected to the input / output points of the first input / output module 222 and the second input / output module 224. The connectors 226b and 226c provided in the coupling are coupled, and external communication devices are coupled to the connector 226a provided at one side of the Y connection connector 226.

Reference numeral 230 and 240 denote first and second data control units. The first and second data control units 230 and 240 communicate with each other while any one of the paired first input / output module 222 or the second input / output module 224 is in a run state. Data is inputted and outputted, and the other is maintained in a standby state. When a failure occurs in the first input / output module 222 or the second input / output module 224 in the run state, the input / output module in the standby state is brought into the run state. Operation to control input / output of predetermined data.

For example, the first data control unit 230 operates the first input / output module 222 in a run state, and the second data control unit 240 maintains the second input / output module 224 in a standby state. When a failure occurs in the first input / output module 222, the second data control unit 240 operates the second input / output module 224 in a run state to input and output data.

The duplexing device of the present invention having such a configuration includes a plurality of first input / output modules 222 and second input / output modules (222) provided in the first control unit 200 and the second control unit 210, and the redundant input / output unit 220 ( One of the 224 operates in a run state and the other maintains a standby state.

Here, the plurality of first input / output modules 222 included in the first control unit 200 and the redundant input / output unit 220 operate in the run state, and the second control unit 210 and the plurality of second input / output modules 224 are operated. Is assumed to be in a standby state, and the operation will be described.

When the first control unit 200 intends to transmit predetermined data to an external predetermined communication apparatus, the plurality of first input / output modules 222 of the redundant input / output unit 220 are provided. The first communication module 222 is provided to the first input / output module 222 to which the corresponding communication device is connected, and controls the first data control unit 230 to transmit predetermined data.

Then, the first data control unit 230 controls the first input / output module 222 to output predetermined data provided by the first control unit 200, and the predetermined data to be output is Y-connected connector. 226 is transmitted to the corresponding communication device outside.

The predetermined data transmitted by the external communication device is input to the first input / output module 222 through the Y wiring connector 226 of the redundant input / output unit 220.

Then, the first data control unit 230 controls the first input / output module 222 that inputs the data to provide data to the first controller 200, and the first controller 200 controls the first data. 1 Processes data provided by the input / output module 222.

In this state, the first data control unit 230 and the second data control unit 240 communicate with each other while the first input / output module 222 having a failure among the plurality of first input / output modules 222. Determine whether there is.

When there is a first input / output module 222 having a failure as a result of the determination, the first data control unit 230 stops the operation of the first input / output module 222 where the failure has occurred, and the second data control unit In operation 230, the second input / output module 224 paired with the first input / output module 222 having a failure may be operated in a run state to input / output predetermined data.

4 is a circuit diagram illustrating a configuration of a digital data input unit included in an input / output module in the duplexing apparatus of the present invention. Referring to FIG. 4, a plurality of constant voltages in which the plurality of digital data input points DI1, DI2,... DIn of the connectors 226b and 226c of the Y-connected connector 226 are a plurality of resistors R1 and a noise canceling element. The diodes ZD1 are respectively connected to the anodes of the light emitting elements of the plurality of photocouplers PC1 which are the insulated transmission elements, and the cathodes of the light emitting elements of the photocoupler PC1 are commonly connected through the connector D1. It is connected to the digital data common terminal DC1 of 226b and 226c.

The emitters of the light receiving transistors of the plurality of photocouplers PC1 are connected to ground, and the power supply terminal Vcc is connected to the collector via a plurality of resistors R2, respectively, and digital data is output from the connection points. It is composed.

The digital data input unit having such a configuration is provided with a plurality of digital data input points DI1 and DI2 of the connectors 226b and 226c of the Y-connected connector 226 from an external communication device while the operating voltage is applied to the power supply terminal Vcc. The digital data input to DIn is sequentially passed through the light emitting elements of the resistor R1, the constant voltage diode ZD1, and the plurality of photocouplers PC1, and the connector 226b is commonly connected through one diode D1. , And flows to the digital data common terminal DC1 of 226c.

In this case, the constant voltage diode ZD1 is turned off when the threshold voltage is lower than the preset threshold voltage. When the constant voltage diode ZD1 is equal to or higher than the threshold voltage, the constant voltage diode ZD1 is turned on.

Therefore, among the digital data input to the plurality of digital data input points DI1, DI2, ... DIn, the noise signal below the threshold voltage preset in the constant voltage diode ZD1 is all blocked by the constant voltage diode ZD1. The digital data equal to or greater than the threshold voltage is applied to the light emitting devices of the plurality of photo couplers PC1 through the constant voltage diode ZD1.

Then, the light emitting elements of the plurality of photo couplers PC1 are turned on or off according to the digital data, and the light receiving transistor receives the light of the light emitting elements of the plurality of photo couplers PC1 and outputs the digital data to the collector.

As described above, the digital data output by the light receiving transistor of the photocoupler PC1 is processed by the first and second input / output modules 222 and 224, and according to the control of the first or second data control units 230 and 240. It is input to the first or second control unit 210 and processed.

5 is a circuit diagram showing a configuration of a digital data output unit included in the input / output module in the duplexing apparatus of the present invention. Here, reference numeral 502 denotes a digital data providing unit. The digital data providing unit 502 provides digital data to be transmitted to the outside.

Reference numeral 504 denotes an isolation transmission unit that insulates and transmits digital data provided by the digital data providing unit 502. The insulation transmission unit 504 may include a plurality of photocouplers, each of which is an insulation transmission element, through which the digital data output terminals OUT11, OUT12,..., OUT1n of the digital data providing unit 502 pass through a plurality of resistors R3, respectively. A power supply terminal Vcc is connected to each of the light receiving elements of the plurality of photocouplers PC2 through a plurality of resistors R4, respectively, to receive a plurality of photocouplers PC2. At the connection point of the collector of the transistor and the plurality of resistors R4, the digital data to be transmitted to the digital data output points DO1, DO2, ..., DOn of the connectors 226b and 226c are output through the relay switch RYS1. It is composed.

Reference numeral 506 denotes a run state driver. The run state driver 506 has a run state control terminal RUN1 of the digital data providing unit 502 connected to the base of the transistor TR1 through a resistor R5, and the emitter of the transistor TR1 is connected to ground. The power supply terminal Vcc is connected to the collector of the transistor TR1 through the relay RY1, and the plurality of relay switches RYS1 are configured to be connected when the relay RY1 is driven.

When the digital data output unit having such a configuration operates in the run state with the operating voltage applied to the power supply terminal Vcc, the digital data providing unit 502 is the run state control terminal RUN1. Outputs The high potential signal of logic 1 is applied to the base of the transistor TR1 through the resistor R5 of the run state driver 506, so that the transistor TR1 is turned on and is connected to the collector of the transistor TR1. The relay RY1 is driven to connect all the relay switches RY1 included in the insulation transmission unit 504.

In this state, the plurality of digital data output from the digital data providing unit 502 to the plurality of output terminals OUT11, OUT12,. It is applied to the light emitting element of the photo coupler PC2, respectively.

Then, the light emitting elements of the plurality of photo couplers PC2 are flickered according to the plurality of digital data output from the digital data providing unit 502 to the plurality of output terminals OUT11, OUT12, ..., OUT1n, and the plurality of photos As the light emitting device of the coupler PC2 is blinking, the light receiving transistors of the plurality of photocouplers PC2 receive and output the light to the collector thereof. That is, the plurality of digital data output by the digital data providing unit 502 to the plurality of output terminals OUT11, OUT12,..., And OUT1n are insulated through the plurality of photo couplers PC2, thereby It is output to the collector of a light receiving transistor.

The digital data output to the collectors of the light receiving transistors of the plurality of photocouplers PC2 are output to the digital data output points DO1, DO2, ..., DOn of the connectors 226b and 226c through the plurality of relay switches RYS1. Is transmitted to an external communication device.

In addition, the digital data output to the collectors of the light receiving transistors of the plurality of photocouplers PC2 are input to the plurality of input terminals IN11, IN12,..., IN1n of the digital data providing unit 502 through a plurality of relay switches RYS1. ), The digital data providing unit 502 uses the digital data input to the plurality of input terminals IN11, IN12, ..., IN1n, and outputs the plurality of output terminals OUT11, OUT12, ..., OUT1n. It is possible to accurately determine whether or not a plurality of digital data to be output to the external communication device through the connector (226b, 226c).

6 is a circuit diagram illustrating a configuration of an analog data input unit included in an input / output module in the duplexing apparatus of the present invention. Here, reference numeral 602 denotes an analog data processor for controlling the input of analog data applied to the analog data input points AI1, AI2, ..., AIn of the connectors 226b and 226c and processing the input analog data.

Reference numeral 604 denotes a run state driver. In the run state driver 604, the run state control terminal RUN2 of the analog data processor 602 is connected to the base of the transistor TR2 through a resistor R6, and the emitter of the transistor TR2 is connected to ground. The power supply terminal Vcc is connected to the collector of the transistor TR2 through the relay RY2.

Reference numeral 606 denotes an analog data transfer unit. The analog data transfer unit 606 may include the relay (B) between the analog data input points AI1, AI2,..., AIn of the connectors 226b and 226c and a plurality of input terminals of the analog data processor 602. The plurality of relay switches RYS2 connected when the RY2 is driven are connected.

When the analog data input unit configured as described above inputs analog data applied to the analog data input points AI1, AI2, ..., AIn of the connectors 226b and 226c while the operating voltage is applied to the power supply terminal Vcc. The analog data processor 602 outputs a high potential signal of logic 1 to the run state control terminal RUN2. Since the high potential signal of logic 1 outputted to the run state control terminal RUN2 is applied to the base of the transistor TR2 through the resistor R6 of the run state driver 604, the transistor TR2 is brought into a conductive state. , The relay RY2 is driven.

Then, the plurality of relay switches RYS2 of the analog data transmission unit 606 are all connected, and the plurality of analogs applied to the plurality of analog data input points AI1, AI2, ..., AIn of the connectors 226b and 226c. Data is input to the analog data processing unit 602 through a plurality of relay switches RYS2 and processed.

7 is a circuit diagram illustrating a configuration of an analog data output unit included in an input / output module in the duplexing apparatus of the present invention. Here, reference numeral 700 denotes an analog data providing unit. The analog data providing unit 702 provides a plurality of analog data to be transmitted to an external communication device, and controls the provided plurality of analog data to be transmitted to an external communication device.

Reference numeral 704 denotes a run state driver. The run state driver 704 has a run state control terminal RUN3 of the analog data provider 702 connected to the base of the transistor TR3 through a resistor R7, and the emitter of the transistor TR3 is connected to ground. The power supply terminal Vcc is connected to the collector of the transistor TR3 via the relay RY3.

Reference numeral 706 denotes an analog data transfer unit for transferring a plurality of analog data provided by the analog data provider 702 to the connectors 226b and 226c. The analog data transfer unit 706 includes a plurality of output terminals OUT21, OUT22,..., OUT2n of the analog data providing unit 702, and a plurality of analog data output points AO1, AO2, and the like of the connectors 226b and 226c. A plurality of relay switches RYS3 connected to each other when the relay RY3 is driven are connected between AOn.

The analog data output unit according to the present invention configured as described above, when the operating voltage is applied to the power supply terminal Vcc, the analog data providing unit 702 transmits the analog data to an external communication device to the run state control terminal RUN3. Output the high potential signal of logic 1.

Then, the high-potential signal of logic 1 output to the run state control terminal RUN3 is applied to the base of the transistor TR3 through the resistor R7 of the run state driver 704, so that the transistor TR3 is in a conductive state. The relay RY3 is driven.

Then, the plurality of relay switches RY3 of the analog data transfer unit 706 are all connected, and the plurality of analog outputs are output to the plurality of output terminals OUT21, OUT22,..., OUT2n of the analog data providing unit 702. Data is transmitted to the plurality of analog data output points AO1, AO2, ..., AOn of the connectors 226b and 226c through the plurality of relay switches RYS3 and transmitted to an external communication device.

The present invention has been described in detail with reference to exemplary embodiments, but those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. This will harm.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

1 is a block diagram illustrating a configuration of a general redundancy device as an example;

2 is a block diagram showing the configuration of a preferred embodiment of the duplexing apparatus of the present invention;

3a and 3b is a front perspective view and a rear perspective view showing the configuration of the Y connection connector used in the redundancy device of the present invention,

4 is a circuit diagram showing the configuration of a digital data input unit provided in the input / output module in the duplexing apparatus of the present invention;

5 is a circuit diagram showing a configuration of a digital data output unit provided in the input / output module in the duplexing apparatus of the present invention;

6 is a circuit diagram showing the configuration of an analog data input unit included in the input / output module in the duplexing apparatus of the present invention; and

7 is a circuit diagram illustrating a configuration of an analog data output unit included in an input / output module in the duplexing apparatus of the present invention.

Claims (9)

At least one first input / output module and at least one second input / output module for inputting and outputting predetermined data to and from the outside, wherein the first input / output module and the second input / output module are paired, and a Y-connected connector is coupled to the input / output point. Input / output redundancy unit; And While performing communication with each other, one of the paired first and second input / output modules causes input / output of predetermined data in a run state and the other maintains a standby state, and the input / output module in the run state And first and second data control units configured to operate the standby input / output module in a run state to input and output predetermined data when a failure occurs. The method of claim 1, A first control unit providing predetermined data transmitted from the first input / output module and the second input / output module to the outside, and processing predetermined data inputted from the outside by the first input / output module and the second input / output module; 2 further comprising a control unit, The first control unit and the second control unit; While communicating with each other, one controller controls the input / output of the predetermined data in a run state, the other controller waits in a standby state, and the controller in the standby state when a failure occurs in the controller in the run state. An apparatus for redundancy of a multipoint input / output module, which operates in a run state to control input / output of predetermined data. The electronic device of claim 1, further comprising: a digital data input unit configured to input digital data from the outside in the plurality of first and second input / output modules; And a plurality of photocouplers for isolating and inputting digital data applied to a plurality of digital data input points of the Y-connected connector from the outside. The apparatus of claim 3, wherein the digital data input unit; Redundancy of the multi-point input and output module further comprises a constant voltage diode between the plurality of digital data input points of the Y-connected connector and the plurality of photocouplers for removing a noise signal below a predetermined threshold voltage. Device. The digital data output apparatus of claim 1, further comprising: a digital data output unit configured to transmit predetermined digital data to the outside from the plurality of first and second input / output modules; And a plurality of port couplers for isolating a plurality of digital data to be transmitted to the outside provided by a digital data providing unit and outputting the plurality of port couplers to the plurality of digital data output points of the Y-connected connector. The apparatus of claim 5, wherein the digital data output unit; A plurality of relay switches provided between the output terminals of the plurality of port couplers and the plurality of digital data output points of the Y-connector connector; And And a run state driver for connecting the plurality of relay switches according to a run state control signal output by the digital data providing unit. The apparatus of claim 5, wherein the digital data output unit; Redundancy of the multi-point input and output module characterized in that the digital data providing unit to check the transmission of the digital data by inputting the digital data output to the plurality of digital data output points of the Y connection connector to the digital data providing unit. Device. The display apparatus of claim 1, further comprising: an analog data input unit configured to input analog data from the outside in the plurality of first and second input / output modules; A plurality of relay switches provided between the plurality of digital data output points of the Y-connected connector and the plurality of input terminals of the analog data processing unit; And And a run state driver configured to connect the plurality of relay switches according to a run state control signal provided by the analog data processor. The display apparatus of claim 1, further comprising: an analog data output unit configured to output analog data from the plurality of first and second input / output modules to the outside; A plurality of relay switches provided between a plurality of output terminals of an analog data providing unit for providing analog data to be transmitted to the outside and a plurality of digital data output points of the Y-connected connector; And And a run state driver for connecting the plurality of relay switches in accordance with a run state control signal provided by the analog data providing unit.

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