WO2015145582A1 - Système de transmission de signal de commande/surveillance, et terminal formant station asservie utilisé dans un système de transmission de signal de commande/surveillance - Google Patents

Système de transmission de signal de commande/surveillance, et terminal formant station asservie utilisé dans un système de transmission de signal de commande/surveillance Download PDF

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Publication number
WO2015145582A1
WO2015145582A1 PCT/JP2014/058357 JP2014058357W WO2015145582A1 WO 2015145582 A1 WO2015145582 A1 WO 2015145582A1 JP 2014058357 W JP2014058357 W JP 2014058357W WO 2015145582 A1 WO2015145582 A1 WO 2015145582A1
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Prior art keywords
data
transmission
control
slave station
monitoring
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PCT/JP2014/058357
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English (en)
Japanese (ja)
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錦戸憲治
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株式会社エニイワイヤ
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Priority to PCT/JP2014/058357 priority Critical patent/WO2015145582A1/fr
Priority to JP2014556670A priority patent/JP5738498B1/ja
Publication of WO2015145582A1 publication Critical patent/WO2015145582A1/fr

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems

Definitions

  • the present invention eliminates a signal line 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 including the output unit and the input unit.
  • the present invention relates to a control / monitor signal transmission system that transmits data by a transmission synchronization method such as wiring, connecting with a common data signal line, and synchronizing with a transmission clock signal.
  • 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.
  • a remote wiring check system disclosed in Japanese Patent Application Laid-Open No. 2011-114449 as a system for identifying an abnormality in transmission data in a slave station on the control unit side.
  • This remote wiring check system in a control / monitor signal transmission system having a single control unit and a plurality of controlled devices, between a master station and a slave station connected by a reduced data signal line.
  • connection data short-circuit information, disconnection information, and normal information are identified. Therefore, it is possible to easily check the wiring connection state of the slave station without reducing the input data (monitoring data) capacity of the signal.
  • a slave station terminal used in the transmission error detection method disclosed in Registered Utility Model Publication No. 3184345 is proposed (Prior Art 2).
  • this slave station terminal using a management data area different from the control / monitoring data area, the error occurrence count integrated value or the data indicating the transmission abnormality alarm when the error occurrence count per predetermined time is larger than the threshold value,
  • the control / monitor signal transmission system in which data is transmitted by the transmission synchronization method, it is possible to detect abnormalities in transmission data at the slave station at the master station .
  • Japanese Patent Laid-Open No. 6-296292 discloses a technique in which a transmission error detection circuit detects a parity error by checking the presence of a parity error using parity error check data of a received serial signal RCV ( Prior art 3). Further, Japanese Patent Laid-Open No. 10-107775 discloses a technique for notifying error detection when a transmission error is detected (prior art 4).
  • JP 2011-114449 A Registered Utility Model Publication No. 3184345 JP-A-6-296292 JP-A-10-107775
  • the master station cannot confirm whether there is an error in the transmitted data due to noise or the like.
  • the transmission error detection method using the transmission error check data including the prior art 3 and the like it is possible to check whether there is an error in the transmitted data, but individual transmission data between the master station and the slave stations.
  • a command transmission method that directly sends and receives the abnormalities of the system was assumed. For this reason, in these error detection methods, the capacity of the data area for notifying each abnormality is increased, and if the number of abnormality information data areas increases, control data (output data from the master station) and monitoring are performed. There has been a problem that the transmission speed of the control / monitor data area composed of data (data input to the master station) is greatly reduced.
  • the transmission error check data (eg 16 bits) From this point, there is a problem that the transmission speed is greatly reduced. Therefore, the master station cannot be used for data transmission of a transmission synchronous system in which data is exchanged with a plurality of slave stations at the same time.
  • the present invention provides a control / monitoring signal transmission system that can confirm whether there is an error in transmission data in the transmission synchronization method at the master station without reducing the transmission speed of transmission data, and can construct a highly reliable transmission system.
  • the purpose is to provide.
  • a master station and a plurality of slave stations are connected by a common data signal line, and control is performed for a predetermined time under the control of a timing signal generated by a timing generator included in the master station.
  • a transmission signal including a plurality of transmission data signals each having a width of one cycle is transmitted to the common data signal line.
  • a management data area different from a control / monitor data area composed of transmission control data for the plurality of slave stations and transmission monitoring data superimposed from the plurality of slave stations is provided.
  • the slave station extracts all of the transmission control data and converts it into control transmission check data according to a predetermined rule, and extracts all of the transmission monitoring data and performs monitoring transmission according to a predetermined rule. One or both of the monitoring transmission check conversions to be converted into check data are performed.
  • the master station arbitrarily designates the slave station using the management data area.
  • the slave station determined by the designation transmits one or both of the control transmission check data and the monitoring transmission check data to the master station via the management data area.
  • the master station superimposes the control transmission check data of the master station converted according to the rules on the management data area based on the entire transmission control data, and the slave station transmits the control transmission check data converted by the own station.
  • the control transmission check data of the master station in the management data area may be compared and verified.
  • the control transmission check data and the supervisory transmission check data are composed of data different from a data-free state, and the control transmission is transmitted from the slave station determined by the designation to the master station via the management data area.
  • the presence / absence of a plurality of disconnections between the slave station determined by the designation and the common data line may be confirmed based on the presence / absence of the check data or the monitoring transmission check data.
  • the data different from the state without data is, for example, if the default in the state without data is “0”, the data other than “0” is the default in the state without data. If there is, data other than “1” is applicable.
  • the master station based on the control transmission check data of the master station or all of the transmission monitoring data, monitor transmission check data of the master station converted according to the rules and control transmission check on the slave station side determined by the designation
  • the data or the monitoring transmission check data on the slave station side is compared and collated, the comparison collation result data is stored for each slave station, and the frequency of occurrence of transmission errors is determined based on the cumulative value of the comparison collation result data. It may be calculated for each slave station. In this case, the location where the cause causing the transmission error in the common data signal line may be determined based on the frequency of occurrence of the transmission error.
  • the slave station determined by the designation may be the same or different every frame cycle between the start signal of the transmission signal and the next start signal, and the start signal of the transmission signal and the next start signal A plurality of signals may be designated for each frame cycle between signals.
  • the slave station terminal is connected to a master station and transmits a plurality of transmission data signals having a predetermined time width as one cycle under the control of a timing signal generated by a timing generator included in the master station. It is connected to a common data signal line through which signals are transmitted.
  • a transmission error detection unit and a management monitoring data transmission unit are provided.
  • the transmission error detection means extracts from the transmission data signal based on all transmission control data for a plurality of slave stations connected to the common data signal line, and converts it into control transmission check data according to a predetermined rule.
  • Control transmission check conversion and supervisory transmission check conversion that extracts and converts the transmission monitoring data into monitoring transmission check data according to a predetermined rule based on all transmission monitoring data superimposed by a plurality of slave stations connected to the common data signal line Perform either one of the conversions.
  • the management monitoring data transmission means is provided in the transmission procedure via a management data area different from a control / monitoring data area composed of the transmission control data and the transmission monitoring data, or the control transmission check data or The monitoring transmission check data is transmitted to the master station.
  • control / monitor signal transmission system in the slave station, all of the transmission control data is extracted and converted into control transmission check data according to a predetermined rule, and all of the transmission monitoring data is extracted and predetermined.
  • the control transmission check data and the monitoring transmission check data are further transmitted to the master station. Therefore, the master station also converts it to control transmission check data according to the same rules as the slave station based on all transmission control data, and converts it to monitor transmission check data based on the same rules as the slave station based on all transmission monitoring data.
  • transmission error errors The presence or absence can be confirmed at the master station.
  • control transmission check data and monitoring transmission check data on the slave station side are transmitted via the management data area from a slave station that is arbitrarily designated by the master station using a management data area different from the control / monitor data area. Therefore, the transmission rate of transmission data is not reduced in the transmission synchronization method.
  • control transmission check data converted by the master station is superimposed on the management data area, and the slave station compares the control transmission check data converted by the master station with the control transmission check data of the master station in the management data area. If the verification is performed, it is possible to check the presence or absence of a transmission error also in the slave station, reduce the influence of the transmission error on the output operation, and construct a highly reliable transmission system.
  • the master station compares and verifies the control transmission check data or supervisory transmission check data of the master station with the control transmission check data or supervisory transmission check data of the slave station determined by the designation, and the comparison and collation result.
  • any slave station can be obtained at the master station. Obtainable.
  • disconnection detection at only one location designated per frame cycle The disconnection detection time can be shortened compared to the method to do.
  • the slave stations specified in each frame cycle do not necessarily have to be different. For example, when the same data is confirmed in two frame cycles, the same slave station is set in two frame cycles (for example, the first frame cycle and the second frame cycle). It is also possible to specify another slave station in the next two frame cycles (for example, the third frame cycle and the fourth frame cycle) (same or different for each frame cycle).
  • the slave station terminal Since the slave station terminal according to the present invention includes the transmission error detection means and the management monitoring data transmission means, it is used for the control / monitoring signal transmission system according to the present invention to check whether or not there is a transmission error in the master station.
  • the control transmission check data and the monitoring transmission check data on the slave station side can be transmitted to the master station.
  • FIG. 1 is a system configuration diagram of an embodiment of a control / monitor signal transmission system according to the present invention. It is a system configuration
  • the control / monitor signal transmission system includes a single master station 2 connected to common data signal lines DP and DN (hereinafter also referred to as transmission lines), and the common data signal line. It consists of a plurality of input / output slave stations 4, output slave stations 6 and input slave stations 7 connected to 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 include a signal output process for the output unit 8 that operates in accordance with an output instruction from the master station 2 and an input unit 9 that takes in input information to the master station 2. Either or both of the input signal processing from are performed.
  • the output unit 8 is, for example, an actuator, a (stepping) motor, a solenoid, a solenoid valve, a relay, a thyristor, or a lamp.
  • the input unit 9 is, for example, a reed switch, a micro switch, a push button switch, a photoelectric switch, various sensors, or the like. It is.
  • 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 an output unit 8 (output unit integrated slave station 80), and the input slave station 7 includes an input unit 9 (input unit integrated slave station 90). It may be.
  • the master station 2 includes a control unit 1, 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, as shown in FIG.
  • the control signal which is connected to the common data signal lines DP and DN, is superimposed on the common data signal lines DP and DN, and is connected to the common data signal lines DP and DN.
  • the monitoring data extracted from the monitoring signal superimposed on DP and DN is sent to the input / output unit 12 of the control unit 1.
  • the control unit 1 includes a management judgment unit 11 having an arithmetic processing function and an input / output unit 12.
  • the management determination unit 11 receives data from the management data unit 22 and the input data unit 26 via the input / output unit 12 and performs necessary arithmetic processing based on a program stored therein.
  • the output data unit 21 delivers the data received from the control unit 1 to the master station output unit 24 as serial data.
  • the management data unit 22 includes storage means 29 for storing the output IDX table and the input IDX table. Then, based on the data received from the control unit 1 and these IDX tables, the data necessary for specifying the slave station is transferred to the master station output unit 24 as serial data. Further, the control transmission check data and the supervisory transmission check data on the slave station side delivered from the supervisory data extraction means 36 are compared with the control transmission check data and the supervisory transmission check data of the master station to check whether a transmission error has occurred. And the transmission error occurrence frequency data is stored.
  • the output IDX table includes IDX output address data for designating a slave station to superimpose control transmission check data on the slave station on the data signal lines DP and DN, and control transmission check data on the master station and control on the slave station side. It is a list of transmission error frequency data (corresponding to the occurrence frequency of the present invention) obtained from the result of comparison with the transmission check data.
  • An example of the output IDX table is shown in FIG.
  • the input IDX table includes IDX input address data for designating a slave station to superimpose the monitor transmission check data of the slave station on the data signal lines DP and DN, and the monitor transmission check data of the master station and the slave station side. This is a list of transmission error frequency data obtained from the result of comparison with the monitored transmission check data.
  • the head address number which is the address data of the input / output slave station 4 and the output slave station 6 is used as the IDX output address data
  • the address data of the input / output slave station 4 and the input slave station 7 is used as the IDX input address data.
  • the leading address number is used. Further, when a transmission error is confirmed in the slave station corresponding to each head address number, transmission error number data that is the number of times of accumulation is also stored.
  • the timing generation unit 23 includes an oscillation circuit (OSC) 31 and a timing generation unit 32.
  • the timing generation unit 32 generates a timing clock of the system based on the oscillation circuit (OSC) 31, and generates a master station output unit 24, Delivered to the station input unit 25.
  • 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 section 21 and the timing clock received from the timing generation section 23, the control data generation means 33 transmits a series of pulse signals to the common data signal lines DP and DN via the line driver 34. Superimpose the signal.
  • the transmission procedure is one frame cycle between the start signal ST of the transmission signal and the next start signal ST, and is composed of a plurality of transmission data signals as shown in FIG.
  • the start signal ST is longer than the time width of the transmission data signal and has a potential level higher than the threshold value Vst (18 V in this embodiment) of the transmission clock signal.
  • the transmission data signal has a potential level area higher than the transmission clock signal threshold Vst (corresponding to the transmission clock signal, +24 V in this embodiment) and a potential level area lower than the transmission clock signal threshold Vst. Consists of.
  • the potential level area higher than the threshold Vst of the transmission clock signal is the latter half of one cycle, and the potential level area lower than the threshold Vst of the transmission clock signal is the first half of one cycle. There is no limitation, and the order may be reversed.
  • the pulse width of the potential level area lower than the threshold value Vst represents the control signal data.
  • the pulse width (3/4) t0 of the transmission clock signal represents the logical data “0”
  • the pulse width (1/4) t0 represents the logical data “0”. 1 ".
  • the length is not limited and may be determined appropriately.
  • the monitoring signal data is represented by whether the current superimposed in the potential level area lower than the threshold value Vst is larger or smaller than a predetermined value.
  • a current signal smaller than 10 mA represents logical data “0”
  • a current signal larger than 10 mA represents logical data “1”.
  • the input / output slave station 4, the output slave station 6, and the input slave station 7 all generate internal circuit power from the transmission clock signal. Yes.
  • the pulse width of the potential level area lower than the threshold value Vst constitutes a control data area as control data, and the control data area corresponds to the upper stage of the control / monitoring data area in FIG.
  • a current value superimposed on a potential level area lower than the threshold value Vst constitutes a monitoring data area as monitoring data, and the monitoring data area corresponds to the lower part of the control / monitoring data area in FIG. Yes.
  • a management data area is provided as shown in FIG. 1
  • the upper part is an area where data is output from the master station (hereinafter referred to as management control data area), and the lower part is an area where data is input to the master station (hereinafter referred to as management monitoring data area). It is to show.
  • transmission check data CDto of the master station In the management control data area, transmission check data CDto of the master station, a plurality of output slave station address designation data IDXo1 to IDXom, and a plurality of input slave station address designation data IDXi1 to IDXim are superimposed from the master station 2. Further, control transmission check data CDt1 to CDtm on the slave station side from the input / output slave station 4 or the output slave station 6 specified by the output slave station address designation data IDXo1 to IDXom are superimposed in the management monitoring data area, and the input slave The monitor transmission check data CDr1 to CDrm on the slave station side are superimposed from the input / output slave station 4 or the input slave station 7 specified by the station address designation data IDXi1 to IDXim.
  • the control transmission check data CDto of the master station is data converted by the master station 2 according to a predetermined rule based on all the transmission control data OUT0 to OUTn started from the start or end of the start signal ST. .
  • cyclic redundancy check data (hereinafter referred to as CRC), which is one of transmission error detection methods converted by the control data generating means 33, is data other than “0”. It should be noted that other detection methods such as FCS check data and parity check data may be used.
  • control transmission check data CDt1 to CDtm on the slave station side are all transmitted from the start or end of the start signal ST shown in FIG. Based on the control data OUT0 to OUTn, the data is converted according to the same rule as the rule used for conversion to the control transmission check data CDto of the master station.
  • monitor transmission check data CDr1 to CDrm on the slave station side are all transmitted from the start or end of the start signal ST shown in FIG. 1 in each of the input / output slave station 4 and the input slave station 7. Data converted according to a predetermined rule based on the monitoring data IN0 to INn.
  • Output slave station address specification data IDXo1 to IDXom are data determined based on the output IDX table described above.
  • the input slave station address designation data IDXi1 to IDXim are data determined based on the above-described input IDX table.
  • 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 superimposed on the common data signal lines DP and DN from the input / output slave station 4 and the input slave station 7. As described above, the data of the monitoring signal is represented by whether the current superimposed on the potential level lower than the threshold value Vst is larger or smaller than 10 mA, and after the start signal ST is transmitted, the input / output slave station 4 And the monitoring signal is received from each of the input slave stations 7. Then, the monitoring signal detected by the monitoring signal detection unit 35 is delivered to the monitoring data extraction unit 36.
  • the monitoring data extraction unit 36 extracts monitoring data and management monitoring data in synchronization with the timing from the timing generation unit 32, and sends it to the input data unit 26 as serial input data.
  • the input data unit 26 converts the serial input data received from the monitoring data extracting means 36 into parallel data, and sends it to the input / output unit 12 of the control unit 1 as monitoring data and management monitoring data.
  • the input slave station 7 includes a transmission receiving means 41, a management control data extracting means 42, an address extracting means 43, a management monitoring data transmitting means 44, a monitoring data transmitting means 45, a transmission error detecting means 46, an address.
  • a slave station input unit 70 having setting means 47 and input means 71 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. Calculations and storages necessary for the processing are executed using the CPU, RAM, and ROM included in the MCU, and the CPU, RAM, and ROM in the processing of each of the above-described means constituting the slave station input unit 70 The relationship is omitted for convenience of explanation.
  • the transmission receiving means 41 receives the transmission signal transmitted to the common data signal lines DP and DN via the slave station line receiver 51, and receives this through the management control data extraction means 42, the address extraction means 43, and the management monitoring data transmission means. 44 and the transmission error detection means 46.
  • the management control data extraction means 42 extracts the input slave station address designation data IDXin in the management data area, and if this designates the own station, the function of the transmission error detection means 46 is validated.
  • the address extraction means 43 counts the pulses of the transmission clock signal, which starts from the start or end of the start signal ST indicating the start of the transmission data signal, and consists of a plurality of transmission data signals having a predetermined time width as one cycle.
  • the monitoring data transmitting means 45 is validated at the timing when the count value matches the local station address data set by the address setting means 47.
  • the management monitoring data transmission means 44 counts and manages the pulses of the transmission clock signal, which starts from the start or end of the transmission signal start signal ST, and consists of a plurality of transmission data signals having a predetermined time width as one cycle. Get the timing of the data area. Based on the data delivered from the transmission error detection means 46, the management monitoring signal is superimposed on the common data signal lines DP and DN via the slave station line driver 52. The management monitoring signal is superimposed on the management monitoring data area of the transmission procedure.
  • the monitoring data transmitting unit 45 superimposes the monitoring signal on the common data signal lines DP and DN via the slave station line driver 52 when it is validated by the address extracting unit 43. Note that the monitoring signal is superimposed on the monitoring data area of the transmission procedure.
  • the transmission error detection means 46 extracts all transmission monitoring data from the transmission signal started from the start or end point of the start signal ST delivered from the transmission reception means 41. Then, these transmission monitoring data are converted into CRC (monitoring transmission check data on the slave station side of the present invention) according to a predetermined rule and delivered to the management monitoring data transmission means 44. Note that the CRC handed over from the transmission error detecting means 46 to the management monitoring data transmitting means 44 is superimposed on the management monitoring data area of the transmission procedure.
  • CRC monitoring transmission check data on the slave station side of the present invention
  • the input unit 71 delivers the monitoring data to the monitoring data transmission unit 45 based on the input data from the input unit 9.
  • the output slave station 6 includes a transmission receiving means 41, a management control data extracting means 42, an address extracting means 43, a management monitoring data transmitting means 44, an address setting means 47, a control data extracting means 48, and an output.
  • a slave station output unit 60 having means 61 is provided.
  • the output slave station 6 also includes an MCU that is a microcomputer control unit as an internal circuit. This MCU functions as the slave station output unit 60. Calculations and storages necessary for the processing are executed using the CPU, RAM, and ROM included in the MCU.
  • the CPU, RAM, and ROM in the processing of each of the above-described units constituting the slave station output unit 60 The relationship is omitted for convenience of explanation.
  • the same reference numerals are given to substantially the same parts as those of the input slave station 7, and the description thereof will be simplified or omitted.
  • the address extracting means 43 of the output slave station 7 starts from the start or end of the start signal ST indicating the start of the transmission data signal, and is a transmission clock signal including a plurality of transmission data signals having a predetermined time width as one cycle. And the transmission reception signal is delivered to the control data extraction unit 48 at a timing when the count value coincides with the local address data set by the address setting unit 47.
  • the control data extraction means 48 extracts control data from the transmission reception signal delivered from the address extraction means 43. Then, the data is transferred to the output means 61 as control data.
  • the output unit 61 converts the control data delivered from the control data extraction unit 48 into parallel data, outputs the parallel data to the output unit 8, and causes the output unit 8 to perform a predetermined operation.
  • the transmission error detection means 46 of the output slave station 6 extracts all transmission control data from the transmission signal started from the start or end point of the start signal ST delivered from the transmission reception means 41. These transmission control data are converted into CRC (control transmission check data on the slave station side according to the present invention) according to a predetermined rule, and delivered to the management monitoring data transmission means 44 as control transmission check data on the slave station side. Further, the control transmission check data of the master station is extracted from the transmission signal, compared with the converted CRC, and if the result matches, the output means 61 is validated.
  • CRC control transmission check data on the slave station side according to the present invention
  • 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 slave station input / output unit 40 is configured by combining both the slave station output unit 60 and the slave station input unit 70, and each component is the same as the component of the slave station output unit 60 or the slave station input unit 70. Therefore, the description is omitted.
  • transmission control data for operating the output unit 8 is superimposed from the master station 2 on the control data area of the control / monitoring data area in the transmission procedure, and monitoring information from the input unit 9 is received.
  • Transmission monitoring data is superimposed from the input / output slave station 4 and the input slave station 7 on the monitoring data area of the control / monitoring data area provided for each frame cycle between the start signal of the transmission signal and the next start signal, Is transmitted.
  • the presence / absence of a transmission error is determined as follows based on the data transmitted using the management data area.
  • the master station 2 superimposes the converted control transmission check data CDto of the master station on the control / monitoring data area based on all the transmission control data OUT0 to OUTn starting from the start or end of the start signal ST. Thereafter, output slave station address designation data IDXo1 to IDXom for designating an arbitrary input / output slave station 4 or output slave station 6 is superimposed on the management control data area.
  • Each of the input / output slave station 4 and the output slave station 6 extracts all transmission control data OUT0 to OUTn starting from the start or end point of the start signal ST superimposed on the control / monitoring data area. Based on this, the local station converts it into control transmission check data CDtn on the slave station side. Then, the control transmission check data CDto of the master station superimposed on the management control data area is extracted and compared with the control transmission check data CDtn on the slave station side converted by the own station. Is determined not to occur. Further, the input / output slave station 4 and the output slave station 6 that have determined that no transmission error has occurred operate the output unit 8 based on the transmission control data for the local station.
  • n is an arbitrary integer, indicating that it has been converted in a specific input / output slave station 4 or output slave station 6.
  • monitoring transmission check data CDrn on the slave station side, which will be described later.
  • Each of the input / output slave station 4 and the output slave station 6 manages and monitors the control transmission check data CDtn on the slave station side converted by the own station when designated by the output slave station address designation data IDXo1 to IDXom. Superimpose on the data area.
  • the master station 2 extracts the control transmission check data CDt1 to CDtm on the slave station side superimposed on the management monitoring data area.
  • the master station 2 compares and collates the control transmission check data CDto of the master station converted by the master station and the control transmission check data CDt1 to CDtm (transmission check data CDtn) on the slave station side, so that the output child It is determined whether or not there is a transmission error in the transmission control data of the input / output slave station 4 and the output slave station 6 designated by the station address designation data IDXon.
  • control transmission check data is data other than “0” as described above, the master station 2 can superimpose the control transmission check data on the input / output slave station on which the data is superimposed. 4 or the output slave station 6 is determined not to be disconnected.
  • the master station 2 superimposes input slave station address designation data IDXi1 to IDXim for designating an arbitrary input / output slave station 4 or input slave station 7 on the management control data area.
  • Each of the input / output slave station 4 and the input slave station 7 extracts all the transmission monitoring data IN0 to INn starting from the start or end of the start signal ST, and based on that, monitors the slave station side in its own station It is converted into transmission check data CDrn. Then, the input / output slave station 4 or the input slave station 7 designated by the input slave station address designation data IDXi1 to IDXim superimposes the monitoring transmission check data CDrn on the slave station side converted by the own station on the management monitoring data area. The master station 2 extracts the monitor transmission check data CDr1 to CDrm on the slave station side superimposed on the management monitor data area.
  • the master station 2 also converts it into monitor transmission check data CDrcm of the master station based on all transmission monitor data IN0 to INn started from the start or end of the start signal ST. Then, each of the monitored transmission check data CDr1 to CDrm (transmission check data CDrn) on the slave station side extracted from the management monitoring data area is compared with the monitored transmission check data CDrmm of the master station, thereby specifying the input slave station address. It is determined whether there is a transmission error in the transmission monitoring data via the input / output slave station 4 and the input slave station 7 specified by the data IDXin. Further, as in the case of the control transmission check data, it is determined that the monitoring transmission check data is superimposed, so that no disconnection occurs in the input / output slave station 4 or the input slave station 7 on which the data is superimposed.
  • the output slave station address designation data IDXo1 to IDXom and the input slave station address designation data IDXi1 to IDXim are designated for each frame cycle between the start signal of the transmission signal and the next start signal.
  • the number specified for each frame cycle may be reduced and a different slave station may be specified for each frame cycle.
  • the slave stations specified in each frame cycle do not necessarily have to be different. For example, when the same data is confirmed in two frame cycles, the same slave station is set in two frame cycles (for example, the first frame cycle and the second frame cycle). It is also possible to designate another slave station in the next two frame cycles (for example, the third frame cycle and the fourth frame cycle).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

La présente invention concerne un système de transmission de signal de commande/surveillance dans lequel la présence d'une erreur dans des données de transmission dans un schéma de synchronisation de transmission peut être confirmée par une station maîtresse sans réduire la vitesse de transmission des données de transmission. Une pluralité de stations asservies connectées à la station maîtresse par une ligne de signal de données commune extrait la totalité des données de commande de transmission de la pluralité de stations asservies et, sur la base de l'extraction, convertit les données en données de vérification de transmission de signal de commande d'après des règles prédéterminées. En variante, la totalité des données de surveillance de transmission superposées à partir de la pluralité de stations asservies est extraite et, sur la base de l'extraction, les données sont converties en des données de vérification de transmission de signal de surveillance d'après les règles prédéterminées. Les données de vérification de transmission de signal de commande et les données de vérification de transmission de signal de surveillance sont transmises à la station maîtresse via des régions de données de gestion prévues dans la séquence de transmission, les régions de données de gestion étant différentes de régions de données de commande/surveillance comprenant les données de commande de transmission et les données de surveillance de transmission.
PCT/JP2014/058357 2014-03-25 2014-03-25 Système de transmission de signal de commande/surveillance, et terminal formant station asservie utilisé dans un système de transmission de signal de commande/surveillance WO2015145582A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2014/058357 WO2015145582A1 (fr) 2014-03-25 2014-03-25 Système de transmission de signal de commande/surveillance, et terminal formant station asservie utilisé dans un système de transmission de signal de commande/surveillance
JP2014556670A JP5738498B1 (ja) 2014-03-25 2014-03-25 制御・監視信号伝送システムおよび制御・監視信号伝送システムに使用する子局ターミナル

Applications Claiming Priority (1)

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PCT/JP2014/058357 WO2015145582A1 (fr) 2014-03-25 2014-03-25 Système de transmission de signal de commande/surveillance, et terminal formant station asservie utilisé dans un système de transmission de signal de commande/surveillance

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WO2015145582A1 true WO2015145582A1 (fr) 2015-10-01

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CN112925689B (zh) * 2021-01-22 2022-05-20 复旦大学 一种多路监控数据传输优化方法
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3184345U (ja) * 2013-04-12 2013-06-20 株式会社 エニイワイヤ 伝送エラー検出方式に使用する子局ターミナル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3184345U (ja) * 2013-04-12 2013-06-20 株式会社 エニイワイヤ 伝送エラー検出方式に使用する子局ターミナル

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