WO2013150595A1 - Système de détection d'erreur d'interface et terminal de station esclave utilisant ledit système - Google Patents

Système de détection d'erreur d'interface et terminal de station esclave utilisant ledit système Download PDF

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Publication number
WO2013150595A1
WO2013150595A1 PCT/JP2012/058972 JP2012058972W WO2013150595A1 WO 2013150595 A1 WO2013150595 A1 WO 2013150595A1 JP 2012058972 W JP2012058972 W JP 2012058972W WO 2013150595 A1 WO2013150595 A1 WO 2013150595A1
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Prior art keywords
data
station
signal
input
change
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PCT/JP2012/058972
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English (en)
Japanese (ja)
Inventor
錦戸憲治
楠元省太郎
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株式会社エニイワイヤ
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Priority to JP2012533175A priority Critical patent/JP5143315B1/ja
Priority to PCT/JP2012/058972 priority patent/WO2013150595A1/fr
Publication of WO2013150595A1 publication Critical patent/WO2013150595A1/fr

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/40—Remote control systems using repeaters, converters, gateways
    • G08C2201/41—Remote control of gateways
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/40—Remote control systems using repeaters, converters, gateways
    • G08C2201/42—Transmitting or receiving remote control signals via a network

Definitions

  • the present invention reduces the number of signal lines between a master station connected to a control unit and a plurality of output units and input units, or a plurality of slave stations corresponding to a plurality of controlled devices, and connects them with a common data signal line.
  • a control / monitoring signal transmission system that transmits data using a transmission synchronization method such as synchronizing with a transmission clock
  • this method detects failures in interfaces such as relay switches, photocouplers, and reed relays that are externally attached to slave stations.
  • the slave station terminal used for the method.
  • a parallel signal and a serial signal are used instead of a parallel connection that directly connects a plurality of output units and input units or signal lines extending from a controlled device to the control unit.
  • the master station and the plurality of slave stations having the conversion function are connected to the control unit, the plurality of output units and the input unit, or the plurality of controlled devices, respectively, and common data between the master station and the plurality of slave stations.
  • a method of exchanging data with a serial signal via a signal line is widely adopted.
  • Japanese Patent Laid-Open No. 9-163465 discloses a remote monitoring system that uses a relay switch to monitor sensor information on the center monitoring unit side far from the sensor installation point.
  • switching from sensor driving to reference specimen driving is performed by an on / off operation using a relay switch, and the center monitoring unit determines whether the sensor is abnormal or the transmission circuit system is abnormal based on the measurement result. be able to.
  • the failure detection method of the relay switch is limited to the case where the voltage level of one of the input signals to be switched is higher than the voltage level of the other, and when the voltage levels of a plurality of input signals are equal or a single switch There is a problem that it cannot be applied when ON / OFF is performed. There is also a problem in that it is impossible to detect a failure of a coil that drives the relay switch only by detecting a failure of the relay switch.
  • relay switches there are also photocouplers, reed relays, etc. that remotely perform on / off operations.
  • the above relay switch failure detection method applies to all interfaces including these photocouplers and reed relays. It wasn't possible.
  • the present invention provides a master station connected to the control unit and a plurality of output units, an input unit, and a plurality of slave stations corresponding to the controlled devices are connected by a common data signal line, and data transmission is performed by a transmission synchronization method.
  • an interface failure detection method capable of detecting a disconnection failure of an interface such as a reed switch, a photocoupler or a reed relay externally attached to a slave station in a control / monitoring signal transmission system to be performed and a slave station terminal used for the method.
  • the interface failure detection method is a control / monitoring signal transmission system in which a master station and a plurality of slave stations are connected by a common data signal line, and data is transmitted by a transmission synchronization method.
  • a transmission data to be transmitted is provided with a management data area different from the control / monitoring data area composed of control signal data and monitoring signal data.
  • the slave station takes in the control data for the corresponding station or the monitoring data transmitted from the corresponding station as the corresponding data from the transmission signal, with a predetermined other station as the corresponding station.
  • the output data for the output section corresponding to the local station or the input data from the input section corresponding to the local station as the local station data the management data A signal constituting data indicating an interface failure is superimposed on the area.
  • a method using a transmission clock generated by the timing generation means of the master station is suitable. is there.
  • the master station under the control of the transmission clock, the master station outputs a series of pulse signals as a control signal to the common data signal line according to the value of the control data delivered from the control unit, The data value of the monitoring signal superimposed on the signal for each cycle of the clock from each of the plurality of slave stations is extracted and transferred to the control unit.
  • each of the plurality of slave stations counts the pulses of the series of pulse signals starting from the start signal indicating the start of the series of pulse signals, and when the count value matches the own station address, Data corresponding to the local station is extracted from the pulse signal, and the monitoring signal is superimposed on a series of pulse signals in the same pulse cycle as the clock from which the data corresponding to the local station is extracted, or the count value is When it matches the station address, data corresponding to the own station is extracted from the series of pulse signals or the monitoring signal is superimposed on the series of pulse signals.
  • the synchronization method is not limited, and a method suitable for the system design condition may be adopted.
  • the correspondence data and the own station data are binary data shown in two different states, respectively, and the slave station changes the state of the own station data when the state of the correspondence data changes. If there is no change, or if there is no change in the state of the corresponding data when there is a change in the state of the local station data, it may be determined that the interface has failed.
  • the slave station has a change in the state of the corresponding data
  • there is no change in the state of the local station data when there is a first failure state and a change in the state of the local station data.
  • the case where there is no change in the state of the corresponding data may be determined as the second failure state.
  • the management data area includes a management control data area in which data from the master station is superimposed and a management monitoring data area in which data from the slave station is superimposed, and the management monitoring data area from the slave station May be determined as data disconnection of the common data signal line when the data extracted from the management monitoring data area in the master station is “0”.
  • a slave station terminal includes: a local station address setting unit, a corresponding station reference address setting unit, a reference station data change detection unit, a local station data change detection unit, a failure detection unit, and a management monitoring data transmission unit Is provided.
  • the own station address setting means sets the address of the own station.
  • the corresponding station reference address setting means is an input unit that forms a pair with an output unit that corresponds to the own station, or an output unit that forms a pair with an input unit that corresponds to the own station.
  • a corresponding station address that designates a predetermined other station corresponding to the above as a corresponding station is set.
  • Corresponding station data change detecting means takes in control data for the corresponding station or monitoring data sent from the corresponding station as corresponding data, and detects a change in the corresponding data.
  • the own station data change detecting means detects a change in output data for the output unit corresponding to the own station or input data from the input unit corresponding to the own station.
  • the failure detection means is based on a logical judgment using the data state change presence / absence information delivered from the corresponding station data change detection means and the data state change presence / absence information delivered from the local station data change means. Detect interface failure.
  • the management monitoring data transmission unit superimposes a signal constituting data indicating an interface failure output from the failure detection unit on the transmission signal.
  • each output unit and input unit configuring one interface is connected to a slave station, and a predetermined slave station is paired with a corresponding output unit.
  • a predetermined other station corresponding to an input unit constituting one interface or an output unit constituting one interface paired with an input unit corresponding to the own station is defined as a corresponding station of the predetermined slave station. Then, the slave station can detect the interface failure by fetching the control data for the corresponding station or the monitoring data transmitted from the corresponding station as the corresponding data from the transmission signal and using the corresponding data.
  • the interface is composed of an output unit and an input unit, such as a relay switch composed of a coil and a switch, and a photocoupler composed of a light emitting unit and a light receiving unit, control for transmitting data by a transmission synchronization method ⁇
  • the failure can be detected regardless of the type.
  • failures that can be detected by this interface failure detection method include initial operation failure and connection error.
  • the present invention can also be applied to a one-to-many correspondence in which a plurality of input units are linked to a common output unit.
  • the data extracted from the management monitoring data area at the master station is output from the slave station when the data extracted from the management monitoring data area is “0”. It can be said that information is not transmitted to the master station via the common data signal line. Therefore, at that time, it can be determined that the common data signal line is disconnected, and the disconnection of the common data signal line can be detected together with the interface failure.
  • FIG. 1 is a system configuration diagram showing a schematic configuration of a control / monitor signal transmission system. It is a system configuration
  • the control / monitor signal transmission system includes a single master station 2 connected to the control unit 1 and the common data signal lines DP and DN (hereinafter also referred to as transmission lines), It comprises a plurality of input / output slave stations 4, output slave stations 6 and input slave stations 7 connected to the common data signal lines DP and DN.
  • each slave station is shown one by one, but there is no limitation on the type and number of slave stations connected to the common data signal lines DP and DN.
  • the input / output slave station 4, the output slave station 6, and the input slave station 7 are provided with a signal output process for the output unit 8 that operates in response to an output instruction from the control unit 1 and an input unit 9 that incorporates input information to the control unit 1.
  • a signal output process for the output unit 8 that operates in response to an output instruction from the control unit 1
  • an input unit 9 that incorporates input information to the control unit 1.
  • One or both of the input signal processing is performed.
  • the output unit 8 and the input unit 9 constitute one interface.
  • what devices are connected to each other. Also good.
  • the output unit 8 may be an actuator, a (stepping) motor, a solenoid, a solenoid valve, a relay, a thyristor, a lamp, or the like, and the input unit 9 is a reed switch, a micro switch, a push button switch, a photoelectric switch, or various sensors.
  • the input / output slave station 4 is connected to a controlled device 5 including an output unit 8 and an input unit 9, the output slave station 6 is connected only to the output unit 8, and the input slave station 7 is connected only to the input unit 9.
  • the output slave station 6 may include the output unit 8 (output unit integrated slave station 80).
  • the station 7 may include the input unit 9 (input unit integrated slave station 90).
  • the control unit 1 is, for example, a programmable controller, a computer, and the like, and is extracted from the output unit 11 that sends out the control parallel data 13 and the control management parallel data 14, and the monitoring signals from the input / output slave station 4 and the input slave station 7. And an input unit 12 for receiving the first management monitoring parallel data 16 and the second management monitoring parallel data 17 obtained based on the management monitoring data extracted from the monitoring monitoring data 15 and the management monitoring data extracted from the management monitoring signal. . These output unit 11 and input unit 12 are connected to the master station 2. In addition, management judging means 18 for calculating data transmitted from the output unit 11 based on data received from the input unit 12 is provided.
  • the master station 2 includes an output data unit 21, a management data unit 22, a timing generation unit 23, a master station output unit 24, a master station input unit 25, and an input data unit 26.
  • a control signal (hereinafter referred to as a transmission clock signal) that is connected to the common data signal lines DP and DN and is a series of pulse signals corresponding to the transmission signal of the present invention is connected to the common data signal lines DP and DN.
  • Monitoring signal and management monitoring signal transmitted from the input / output slave station 4, the output slave station 6, or the input slave station 7 (hereinafter referred to as "slave stations 4, 6, 7" when referring to all of them)
  • the monitoring parallel data 15, the first management monitoring parallel data 16 and the second management monitoring parallel data 17 extracted from the above are sent to the input unit 12 of the control unit 1.
  • the output data unit 21 delivers the control parallel data 13 from the output unit 11 of the control unit 1 to the master station output unit 24 as serial data.
  • the management data unit 22 includes a storage unit 29 that stores an IDX address table in which information on each of the slave stations 4, 6, and 7 is aggregated, and the control management parallel data 14 and the IDX address table from the output unit 11 of the control unit 1.
  • management control data composed of first management control data ISTo and second management control data IDXo, which will be described later, is created and delivered to the master station output unit 24 as serial data.
  • the IDX address table includes data for specifying any one of the input / output slave station 4, the output slave station 6 and the input slave station 7.
  • the IDX address table includes the data of the slave stations 4, 6, and 7.
  • the start address is used.
  • FIG. 9 shows an example of an IDX address table using the head address.
  • a station to which an address of # ad0 is assigned has a monitoring signal data value of 1 bit, and the data in the IDX address table is a continuous value of # ad0 and # ad1.
  • the data value of the monitoring signal is 2 bits for the station to which the address of # ad1 is assigned, the pulse of # ad2 is also assigned to the same station as # ad1. Therefore, in the data of the IDX address table, # ad3 is stored as the next value of # ad1. In this embodiment, even if the data value of the monitoring signal is 1 bit, that is, # ad0 is also set as the head address similarly to # ad1.
  • the IDX address table of this embodiment also stores the classification data of the slave stations corresponding to each address.
  • “1” is assigned to the input slave station 7
  • “2” is assigned to the output slave station 6
  • “3” is assigned to the input / output slave station 4. It is remembered.
  • the timing generation unit 23 includes an oscillation circuit (OSC) 31 and timing generation unit 32. Based on the OSC 31, the timing generation unit 32 generates a timing clock of this system and delivers it to the master station output unit 24.
  • OSC oscillation circuit
  • the master station output unit 24 includes control data generation means 33 and a line driver 34. Based on the data received from the output data unit 21 and the management data unit 22 and the timing clock received from the timing generation unit 23, the control data generation unit 33 applies a series of data to the common data signal lines DP and DN via the line driver 34. A transmission clock signal is transmitted as a pulse signal.
  • the transmission clock signal has a control / monitoring data area following the start signal ST and a management data area following this.
  • the control / monitoring data area includes control signal data OUTn (n is an integer) sent from the master station 2 and monitoring signal data INn (n is an integer) sent from the input / output slave station 4 or the input slave station 7.
  • the pulse of the transmission clock signal has a high potential level (+24 V in this embodiment) in the second half of one cycle and a low potential level (+12 V in this embodiment) in the first half.
  • the pulse width interval of the first half of the pulse that becomes the level becomes the output data period, and the first half of the pulse that becomes the low potential level also becomes the input data period.
  • the pulse width interval of the low potential level represents the control signal data OUTn, and the presence or absence of the current superimposed on the low potential level represents the monitoring signal data INn.
  • the pulse width interval of the low potential level is extended from (1/4) t0 to (3/4) t0.
  • the width is not limited and may be determined appropriately.
  • the input data period and the output data period can be appropriately determined. For example, the input data period is set to the first half of the pulse (low potential level) as in this embodiment, and the pulse width interval of the second half of the pulse (high potential level) is set.
  • the output data period may be the first half of the pulse (low potential level) and the second half of the pulse (high potential level) may be the input data period as in this embodiment. Further, the latter half of the pulse (high potential level) may serve as both the output data period and the input data period. The same applies to the case where the second half of one cycle of the transmission clock signal is at a low potential level.
  • the upper part shows a control data (output data) period
  • the lower part shows a monitoring data (input data) period.
  • the management data area of the transmission clock signal includes a management control data area in which the management control signal transmitted from the master station 2 is superimposed, and management monitoring data in which the management monitoring signal transmitted from the slave stations 4, 6, 7 is superimposed. Consists of regions.
  • the management control data transmitted by the management control signal is composed of the first management control data ISTo and the second management control data IDXo, and is expressed as a pulse width interval of a low potential level, like the control signal data OUTn.
  • the management monitoring data transmitted by the management monitoring signal is composed of the first management monitoring data STi and the second management monitoring data IDXi. Like the monitoring signal data INn, the presence / absence of the current superimposed on the low potential level is determined. expressed.
  • the first management control data ISTo and the second management control data IDXo are instruction data for specifying the type of data requested to the slave stations 4, 6, 7, or the slave stations 4, 6, 7 Address data for specifying any one of these.
  • the first management monitoring data STi and the second management monitoring data IDXi are data indicating the status of the own station, and data other than “0” is always transmitted as management monitoring data. Details will be described later.
  • the start signal ST is a signal having the same potential level as the high potential level of the transmission clock signal and longer than one cycle of the transmission clock signal.
  • the master station input unit 25 includes monitoring signal detection means 35 and monitoring data extraction means 36.
  • the monitoring signal detection means 35 detects the monitoring signal and the management monitoring signal sent from the slave stations 4, 6, and 7 via the common data signal lines DP and DN. As described above, the data values of the monitoring signal and the management monitoring signal are represented by the presence / absence of a current superimposed on the low potential level.
  • the input / output slave station 4 or the input A monitoring signal is sequentially received from each of the slave stations 7, and subsequently, a management monitoring signal is received from any one of the slave stations 4, 6, and 7.
  • Data of the monitoring signal and the management monitoring signal is extracted by the monitoring data extracting unit 36 in synchronization with the signal of the timing generating unit 32.
  • the monitoring signal data is sent to the input data unit 26 as serial input data 37. Management monitoring data 39 extracted from the management monitoring signal is also sent to the input data unit 26.
  • the input data unit 26 converts the serial input data 37 received from the master station input unit 25 into parallel data, and sends the parallel data to the input unit 12 of the control unit 1 as monitoring parallel data 15. Further, the management monitoring data 39 received from the master station input unit 25 is separated into the first management monitoring parallel data 16 and the second management monitoring parallel data 17 and sent to the input unit 12.
  • the input slave station 7 corresponds to the slave station terminal of the present invention.
  • An input unit 70 is provided.
  • the input slave station 7 of this embodiment includes an MCU that is a microcomputer control unit as an internal circuit, and this MCU functions as the slave station input unit 70.
  • the input unit 9 connected to the input slave station 7 constitutes one interface 91 with the corresponding output unit 8.
  • the output slave station 6 to which the output unit 8 constituting the interface 91 is connected is another embodiment of the slave station terminal of the present invention.
  • an internal circuit is a microcomputer
  • An MCU which is a control unit is provided, and this MCU functions as the slave station output unit 60. Similar to the MCU of the slave station input unit 70, calculations and storages necessary for the processing of the output slave station 6 are executed using the CPU, RAM, and ROM included in this MCU.
  • the input / output slave station 4 includes an MCU that is a microcomputer control unit as an internal circuit, and this MCU functions as the slave station input / output unit 40. It has become a thing. Similar to the MCU of the slave station output unit 60 and the MCU of the slave station input unit 70, calculations and storages necessary for the processing of the input / output slave station 4 are performed using the CPU, RAM, and ROM included in this MCU. It is supposed to be executed.
  • the transmission receiving means 41 of the input slave station 7 receives the transmission clock signal transmitted to the common data signal lines DP and DN, and receives them as management control data extracting means 42, address extracting means 43, and management monitoring data transmitting means 45. To hand over.
  • the management control data extracting unit 42 extracts management control signal data from the management data area of the transmission clock signal, and delivers them to the failure detection unit 50.
  • the address extracting means 43 counts pulses starting from the start signal ST indicating the start of the transmission clock signal, and monitors the count value at the timing when the count value matches the own station address data set by the own station address setting means 44.
  • the data transmission unit 46 is enabled, and control data corresponding to the corresponding station is delivered to the corresponding station data change detection unit 49 at a timing when the count value matches the corresponding station reference address.
  • the monitoring data transmission means 46 sets the base current of the transistor TR to “on” or “off” based on the serial data delivered from the input means 72 when enabled by the input timing delivered from the address extraction means 43. And When the base current is “on”, the transistor TR is turned “on”, and a current signal as a monitoring signal is output to the common data signal lines DP and DN.
  • a current for example, 30 mA
  • the monitoring data at addresses 0 (# ad0), 1 (# ad1), 2 (# ad2), and 3 (# ad3) of the signal shown in FIG. It represents 0 ”,“ 1 ”,“ 0 ”.
  • the management monitoring data transmission means 45 counts pulses starting from the start signal ST of the transmission clock signal, and obtains the timing of the management data area. Then, based on the data delivered from the failure detection means 50, the base current of the transistor TR is output, and a current signal which is a management monitoring signal is output to the common data signal lines DP and DN.
  • the own station address setting means 44 delivers the own station address to the address extracting means 43 and the failure detecting means 50.
  • Corresponding station reference address setting means 48 delivers the corresponding station reference address to address extracting means 43.
  • the own station data change detecting means 47 uses the data delivered from the input means 72 as own station data, and delivers the own station data state change information to the failure detecting means 50 when the state of the own station data changes.
  • Corresponding station data change detecting means 49 uses the data of the signal delivered from the address extracting means 43 as corresponding data, and delivers the corresponding data state change information to the failure detecting means 50 when the state of the corresponding data changes.
  • the failure detection unit 50 includes an ISTo extraction unit 51, an IDXo extraction unit 52, a slave station address designation detection unit 53, a logic determination unit 55, and an encoding unit 56.
  • the ISTo extraction means 51 extracts the first management control data ISTo from the management control signal data delivered from the management control data extraction means 42, and delivers it to the slave station address designation detection means 53. Further, the IDXo extraction unit 52 extracts the second management control data IDXo from the management control signal data delivered from the management control data extraction unit 42, and delivers it to the slave station address designation detection unit 53.
  • the own station address data is delivered from the own station address setting means 44 to the slave station address designation detecting means 53.
  • the slave station address designation detection unit 53 compares the second management control data IDXo with the data value of the local station address, and when they match, delivers predetermined data to the encoding unit 56 in accordance with the first management control data ISTo. . That is, when the first management control data ISTo is data instructing interface failure detection, the interface failure detection signal D is delivered to the encoding means 56.
  • the logic determination unit 55 encodes the corresponding data state change information input from the corresponding station data change detection unit 49 and a determination signal based on the own station data state change information input from the own station data change detection unit 47.
  • the logic judgment means 55 is a normal signal N when both the corresponding data and the local data change, and an interface failure (fault A, corresponding to the first failure state of the present invention) signal when only one of them changes.
  • Aa is output to the encoding means 56. In this embodiment, when the output unit 8 does not operate, the input unit 9 also does not operate.
  • the encoding unit 56 When the interface failure detection signal D is input from the slave station addressing detection unit 53, the encoding unit 56 outputs the normal signal N or the interface failure (failure A and failure B) signal Aa output from the logic determination circuit 55.
  • information indicating normality and interface failure (failure A and failure B) is converted into predetermined code data, and is passed to the management monitoring data transmission means 45 as second management monitoring data IDXi.
  • a value other than “0” is adopted for the second management monitoring data IDXi delivered to the management monitoring data transmission means 45, that is, code data indicating normality or interface failure (failure A and failure B). Therefore, data other than “0” is transmitted as management monitoring data. That is, when the management monitoring data is “0”, it can be said that the information output from the input slave station 7 is not transmitted to the master station via the common data signal lines DP and DN. Therefore, at that time, it can be determined that the common data signal lines DP and DN are disconnected.
  • the first management monitoring data STi is not used in this embodiment, the first management monitoring data STi can be used when further determination of the second management monitoring data IDXi is necessary. .
  • the MCU of the slave station output unit 60 uses the monitoring data transmission means 46 in the MCU of the slave station input unit 70 of FIG. 4 as the control data extraction means 81 and the input means 72 as the output means 82. It is.
  • the control data extraction means 81 extracts a data value from the control data signal delivered from the address extraction means 43 and delivers it to the output means 82 as serial data. However, the control data extraction means 81 does not output a base current to the transistor TR as shown in FIG.
  • the data value extracted from the control data signal is also delivered to the local station data change detection means 47 as local station data.
  • the output unit 82 converts the serial data delivered from the control data extraction unit 81 into parallel data, outputs the parallel data to the output unit 8, and causes the output unit 8 to perform a predetermined operation.
  • the other configuration of the MCU of the slave station output unit 60 is the same as that of the MCU of the slave station input unit 70, and thus the description thereof is omitted.
  • the control unit 1 outputs management control parallel data 14 for instructing interface failure detection to the master station 2 at an appropriately set timing or by an arbitrary input instruction by the user. Receiving this, the master station 2 outputs the first management control data ISTo requesting the interface failure detection and the second management control data IDXo designating one of the data groups stored in the IDX address table. .
  • the IDX address data table shown in FIG. 9 has already been created in the management data section 22 of the master station 2, and a transmission composed of the start signal ST, the control / monitoring data area, and the management data area following the start signal ST. For each cycle, the start address assigned to all of the input slave stations 7 is sequentially specified by the second management control data IDXo.
  • the designation of data in the IDX address table by the second management control data IDXo is in accordance with the table number. That is, first, the index address data (# ad0) of the table number 1 is selected and output as the second management control data IDXo. Then, every transmission cycle, the slave station classification data is sequentially changed to head address data corresponding to each table number having “1”.
  • the order in which the data of the IDX address table is designated by the second management control data IDXo is not limited, and may be in accordance with the priority order by function, for example.
  • the output slave station 6 and the input slave station 7 are data indicating interface failure (failure A and failure B) or normality based on the output from the failure detection means 50 when the second management control data IDXo matches the own station address. Is superposed on the management monitoring data area. In response to this, the master station 2 extracts management monitoring data from the management monitoring signal and delivers it to the control unit 1.
  • the control unit 1 executes a predetermined process according to the contents of the second management monitoring parallel data 16. Specifically, if the second management monitoring parallel data 16 indicates an abnormality, an abnormality display is performed. If the management monitoring data is “0”, it is determined that the common data signal lines DP and DN are disconnected, and a message to that effect is displayed.
  • control unit 1 Through the above procedure, in the control unit 1, the disconnection or failure of the interface configured by the output unit 8 and the input unit 9 corresponding to the output slave station 6 and the input slave station 7, and further, initial operation failure and incorrect wiring, It is possible to grasp the presence of misplacement, adjacent electric signal contamination, contact bounce due to mechanical vibration, and the like.
  • the corresponding station reference address can be changed as appropriate from the control unit side.
  • the data indicating that the corresponding station reference address is changed and the data of the changed corresponding station reference address are superimposed on the management control data area and extracted on the output slave station 6 and input slave station 7 side. You can do it.
  • This control / monitor signal transmission system can monitor desired data in addition to detecting interface failure.
  • gate means 62 indicated by an imaginary line in FIG. 6 is provided, and data 63 to be monitored is input to the gate means 62 and a monitoring signal M is output from the slave station address designation detecting means 53
  • the master station 2 transmits the input monitor command data as the first management control data ISTo to the corresponding output slave station 6 or the input slave station 7, thereby specifying the designated output slave station 6 or the input slave station 7.
  • the monitoring data 63 is output as management monitoring data from the gate means 62 via the management monitoring data transmission means 45, it becomes possible to grasp this on the control unit 1 side.
  • Control Unit 2 Master Station 4 Input / Output Slave Station 5 Controlled Device 6 Output Slave Station 7 Input Slave Station 8 Output Unit 9 Input Unit 11 Output Unit 12 Input Unit 13 Control Parallel Data 14 Management Control Parallel Data 15 Monitoring Parallel Data 16 One management monitoring parallel data 17 Second management monitoring parallel data 18 Management judging means 21 Output data section 22 Management data section 23 Timing generating section 24 Master station output section 25 Master station input section 26 Input data section 29 Storage means 31 OSC (oscillation circuit ) 32 Timing generation means 33 Control data generation means 34 Line driver 35 Monitoring signal detection means 36 Monitoring data extraction means 37 Input data 39 Management monitoring data 40 Slave station input / output unit 41 Transmission reception means 42 Management control data extraction means 43 Address extraction means 44 Own station address setting means 45 Management monitoring data transmitting means 46 Monitoring data transmitting means 47 Own station data change detecting means 48 Corresponding station reference address setting means 49 Corresponding data change detecting means 50 Failure detecting means 51 ISTo extracting means 52 IDXo extracting means 53 Child Station address designation detection means 55 Logic

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Abstract

[Problème] Mettre en place, dans un système de transmission de signal de commande/surveillance dans lequel des données sont transmises par un système de synchronisation de transmission, un système de détection d'erreur d'interface pouvant détecter des erreurs de déconnexion dans une interface rattachée extérieurement à la station esclave; et mettre en place un terminal de station esclave utilisé dans ce système. [Solution] Selon l'invention, avec le concours d'un autre terminal prescrit agissant comme une station esclave correspondante, un terminal esclave importe, à partir d'un signal transmis, des données correspondantes constituées de données de commande pour la station correspondante ou de données de surveillance envoyées par la station correspondante. Ensuite, après définition des données de station locale comme données de sortie de l'unité de sortie à laquelle la station locale correspond, ou comme données d'entrée d'une unité d'entrée à laquelle la station locale correspond, un signal constitutif de données indiquant une erreur d'interface se superpose à la zone de données de gestion fournie dans le signal transmis, sur la base d'une détermination logique utilisant les données de correspondance et les données de station locale.
PCT/JP2012/058972 2012-04-02 2012-04-02 Système de détection d'erreur d'interface et terminal de station esclave utilisant ledit système WO2013150595A1 (fr)

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JP2012533175A JP5143315B1 (ja) 2012-04-02 2012-04-02 インターフェース故障検出方式およびその方式に使用する子局ターミナル
PCT/JP2012/058972 WO2013150595A1 (fr) 2012-04-02 2012-04-02 Système de détection d'erreur d'interface et terminal de station esclave utilisant ledit système

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09163465A (ja) * 1995-12-04 1997-06-20 Nec Eng Ltd 遠隔監視システム
JP2001035335A (ja) * 1999-07-16 2001-02-09 Nec Corp リレー故障検出装置
JP2011114449A (ja) * 2009-11-25 2011-06-09 Anywire:Kk リモート配線チェックシステムおよびそのシステムに使用する接続コネクタ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4338354B2 (ja) * 2001-05-21 2009-10-07 オムロン株式会社 スレーブ
JP4468795B2 (ja) * 2004-12-02 2010-05-26 株式会社 エニイワイヤ 制御・監視信号伝送システム、電子装置
JP4738458B2 (ja) * 2008-08-25 2011-08-03 株式会社 エニイワイヤ 制御・監視信号伝送システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09163465A (ja) * 1995-12-04 1997-06-20 Nec Eng Ltd 遠隔監視システム
JP2001035335A (ja) * 1999-07-16 2001-02-09 Nec Corp リレー故障検出装置
JP2011114449A (ja) * 2009-11-25 2011-06-09 Anywire:Kk リモート配線チェックシステムおよびそのシステムに使用する接続コネクタ

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