JPH10301601A - Data transfer device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve reliability of data transmission in relay information transmission from a control panel to a relay panel of a device in which a control panel and a relay panel are separated, and to secure a device in the event of a transmission error. To a state immediately. SOLUTION: Operation data TD transferred from a control panel C1 to a relay panel R1 via a transmission path is temporarily held by a holding circuit 7, and the transferred operation data TD is stored in the control panel C1.
1 is returned as return data RD, and as a result of comparing the return data RD with the operation data TD by the CPU 1T1, a good signal GD is output to the holding circuit 7 when a match is determined, and the operation data T
D is output to the relay group 5, and the failure signal F
D is output to the setting circuit 8 to operate the relay group 5 so as to shift the operation of the device to the safe side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relatively large-scale control device in which a control panel and a relay panel are separated from each other. The present invention relates to a data transfer device for returning the operation data received in step (1) to a control panel, and comparing the transferred operation data with the returned operation data to verify the normality of the data transfer.

[0002]

2. Description of the Related Art In a power conversion system or the like, a large number of relay groups are provided on a control panel in order to smoothly operate the entire system. The status data is transmitted to other control devices. When the scale of the system increases, the amount of data transmitted to the higher-level monitoring device naturally increases, and accordingly, the number of relays on the control panel also increases.

In such a power converter,
The device is often constructed in a configuration separated into a control panel for controlling and a relay panel for storing a relay group. Further, depending on the system, the control section and the relay group section may be installed at locations separated from each other due to the hardware configuration of the apparatus.

[0004] When such a device is controlled by a CPU, the device is conventionally realized by the configuration shown in FIG. In this apparatus, the output port of the CPU in the control panel C and the relay of the relay panel R are connected in a 1: 1 transmission path. However, if the scale of the device is large, the amount of electric wires constituting the transmission line becomes enormous, and for n relays, it is necessary to lay n or more electric wires between the control panel and the relay panel to form the transmission line. There is.

In order to avoid such a problem, as shown in FIG.
A parallel / serial converter (hereinafter, P / S converter) for converting parallel data, which is operation data of the relays, into serial data, and a serial / parallel for converting serial data into parallel data are provided on a relay board R. When a converter (hereinafter referred to as an S / P converter) is provided and data transfer between the control board C and the relay board R is performed by serial data, data transfer is performed on several data transmission lines regardless of the number of relays. be able to.

However, in such a configuration, a P / S converter,
Even if there is a data transfer error due to noise or the like generated between the S / P converter and the serial data transmission line, the error cannot be detected, and the relay group of the relay panel R malfunctions and the upper control panel or another control panel You will send incorrect information.

In order to prevent these problems, a serial data communication device disclosed in Japanese Patent Application Laid-Open No. 2-186735 has conventionally been considered. FIG. 10 shows a configuration in which the conventional device is applied to data transfer between a control panel C and a relay panel R.

As shown in the figure, a control panel C, which is an operation data transmission side, has a CPU 1T that outputs, for example, 8-bit parallel operation data, and a transmission side first P / S that converts the operation data into serial data and transfers it. The converter 2T includes a transmission-side second P / S converter 3T that converts operation data into serial data and transmits the serial data for confirmation of data transfer.

The relay panel R on the data receiving side is
The first P / S converter 2R on the receiving side, which converts the operation data transferred from the first P / S converter 2T on the transmitting side through the first transmission line into parallel data, and the second P / S converter 3T on the transmitting side, which converts the operation data into parallel data. 2, the receiving-side second S / P converter 3R for converting the operation data transferred through the transmission line 2 into parallel data, and comparing the parallel data converted by the respective S / P converters 2R, 3R to determine whether they match. It is determined whether or not the data transfer is normally performed at the time of the match determination, and the operation data is output from the output port 4 to the relay group 5 to operate.
PU1R.

Next, the operation of the conventional device will be described. When transferring the operation data of the relay group from the control panel C side to the relay panel R side, the CPU 1T outputs desired operation data to the first and second P / S converters 2T and 3T on the transmission side, and transmits the operation data in parallel. The data is converted into serial data, and the data is transferred to the relay board R via the first and second transmission paths.

In the relay board R, the operation data transferred from the control board C are received by the first and second S / P converters 2R and 3R on the receiving side, respectively, and are converted into parallel data. The converted parallel data are compared by the CPU 1R. If the two data are equal, it is assumed that the data transfer has been correctly performed, and the operation data is output from the output port 4 to the relay group 5 to operate. However, if the result of the comparison is not equal, the first or second serial data transmission path, or the first and second P / S converters 2T and 3T on the transmission side, the first and second P / S converters on the reception side,
It is determined that one of the second S / P converters 2R and 3R has an abnormality.

As described above, when a transfer error is determined at the time of transfer of operation data between the control panel C and the relay panel R, a transmission abnormality is notified to the upper monitoring panel or another control panel.
Then, it is necessary to forcibly operate the relay group 5 so as to shift the entire operation of the device to the safe side. for that reason,
When the CPU 1R on the relay panel side detects a transmission abnormality, it gives operation data from the output port 4 to the relay group 5 so as to shift the entire operation of the apparatus to a safe state.

With the above method, it is possible to detect the presence or absence of a data transfer error and to take measures to shift the operation of the apparatus to a safe side when an abnormality occurs.

[0014]

Since the conventional apparatus is configured as described above, two independent transmission lines are always required between the control panel C and the relay panel R, and the two transmission lines are required. On the other hand, if a mistake in the same mode occurs, there is a problem that the mistake cannot be detected by the CPU 1R on the receiving side, that is, the relay board R side.

Also, as described above, the CPU is also provided on the relay board R side.
In the configuration having the 1R, when the CPU 1R fails, the operation of the apparatus cannot be shifted to the safe side. Therefore, it is necessary to detect a failure of the CPU 1R of the relay board R. However, if the failure detection is not performed properly, the device may be seriously damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is intended to surely detect whether data has been correctly transferred without providing a relay panel with a CPU. The present invention provides a data transfer device capable of forcibly shifting the operation of the device to the safe side.

[0017]

According to a first aspect of the present invention, there is provided a data transfer device comprising a plurality of relays, and a relay panel for operating each control object by a contact output of the relay, and a relay panel separated from the relay panel. And a control panel for transferring operation data according to the control contents to each of the relays via a transmission line, wherein the control panel generates operation data according to the control contents, and Data generating means for transferring the data to each of the relays via the relay panel, and comparing the operation data returned from the relay panel via the transmission path with the transferred operation data, and outputs a determination signal indicating a match / mismatch determination result as described above. Determining means for sending to the relay board, data holding means for temporarily holding the operation data transferred from the data generating means via the transmission path to the relay board,
A data return unit for returning the temporarily held operation data to the determination unit via the transmission path; and transmitting the operation data stored in the data storage unit to a relay based on a determination signal input from the determination unit. And relay operating means.

According to a second aspect of the present invention, there is provided a data transfer apparatus comprising:
It consists of a plurality of relays, and a relay panel that operates each controlled object by the contact output of these relays, and is arranged at a distance from this relay panel, and operation data corresponding to the control content is transmitted to each of the above relays via a transmission path. With a control panel to transfer,
Data generation means for generating operation data according to the control content on the control panel and transferring the data to the relays via the transmission path, and transferring the operation data returned from the relay panel via the transmission path. Determining means for comparing the received operation data with the received operation data and transmitting a determination signal indicating the result of the determination to the relay panel to the relay panel, wherein the data is transmitted from the data generating section to the relay panel via the transmission path. Relay operation means for operating each relay based on the operation data that has come, and data return means for converting the operation status of each relay based on the operation data into the mode of the operation data and returning the mode to the determination means via the transmission path And operation restricting means for restricting the operation of each of the relays when a mismatch determination signal is input from the determining means.

According to a third aspect of the present invention, there is provided a data transfer device comprising:
A P / S converter for converting the parallel operation data generated by the data generator on the control panel side into serial data and transferring the data is provided, and the S / P converter converts the operation data returned to the judging unit into parallel data. S / P conversion for performing a match / mismatch determination with the operation data converted and transferred and converting the operation data transferred to the holding means on the relay side into parallel data to generate the operation data for the relay operation And an S / P converter for serially converting the operation data to be returned and returning the converted data to the determination unit.

According to a fourth aspect of the present invention, there is provided a data transfer apparatus comprising:
A P / S converter for converting the parallel operation data generated by the data generator on the control panel side into serial data and transferring the serial data is provided, and the judging means converts the returned operation data into parallel data by the S / P converter. The S / P converter converts the operation data transferred by the holding means on the relay side into parallel data to generate held data, and performs a match / mismatch determination with the operation data converted and transferred. The transferred operation data is returned to the S / P converter of the determination means.

According to a fifth aspect of the present invention, there is provided a data transfer apparatus comprising:
A control panel switching means for providing a transmission path between the control panel and the relay panel, and switching one end of the transmission path to an output section of the P / S conversion section and an input section of the S / P conversion section at the control panel; Connect the other end of the transmission line to the input of the S / P converter
Equipped with a relay panel-side switching means for switching with the output unit of the S conversion unit, and selects one transmission path for transferring operation data from the control panel to the relay panel and returning operation data from the relay panel to the control panel. And do it.

According to a sixth aspect of the present invention, there is provided a data transfer device comprising:
The relay panel is provided with setting means for inputting information for restricting relay operation, which is set in advance, when a mismatch determination signal is input from the control panel to the holding means and sending the information to the relay.

According to a seventh aspect of the present invention, there is provided a data transfer apparatus comprising:
The relay control panel separates a match determination signal or a mismatch determination signal from a determination signal input from the control panel, and when the match determination signal is separated, inputs this signal to the holding means, and separates this signal when the mismatch determination signal is separated. It is provided with a signal separating means for inputting to the setting means.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a data transfer device according to the present embodiment. In the drawing, the same reference numerals as those in FIG. 10 indicate the same or corresponding parts. In the figure, C1 is a control panel in the present embodiment, and in addition to the control panel side P / S converter 2T1, operation data returned from the relay panel R1 (hereinafter referred to as return data). The S / P converter 6T, which performs S / P conversion, compares the S / P-converted return data with the operation data for transfer to determine a match. A CPU 1T1 that outputs a GD and outputs failure data FD to the relay board R1 when a mismatch is determined. Note that the CPU 1T1 constitutes data generation means and determination means.

The relay panel R1 according to the present embodiment
Is a relay board side P / S converter 6R that performs P / S conversion of the S / P converted operation data in addition to the relay board side S / P converter 2R1 and returns it to the control board side S / P converter 6T. A holding circuit (data holding means) 7 for distributing the operation data S / P converted and held by the control panel CPU 1T1 when good data GD is input to the relay group 5, a control panel CPU 1T;
When the failure data FD is input from 1, a value that causes the operation of the device to shift to the safe side when the failure data FD is input (for example, 2
A setting circuit (setting means) 8 for setting a binary 0 or a signal for operating a protection circuit of the device; The relay group 5
Constitute the relay operating means, and the second transmission path constitutes the data returning means.

Next, the operation of this embodiment will be described. When the serial operation data TD transferred from the control panel C1 through the first transmission path is input to the relay panel-side S / P converter 2R1, it is subjected to S / P conversion. The operation data TD converted in parallel is input to the holding circuit 7 and also input to the relay board side P / S converter 6R. The relay board P / S converter 6R converts the parallel operation data into serial return data RD, and returns it to the control board C1 again through the second transmission path. In the control panel C1,
Return data RD is input to S / P converter 6T, converted into parallel data, and input to CPU 1T1.

When data is normally transferred between the control panel C1 and the relay panel R1, the operation data TD of the relay group output from the CPU 1T1 and the S / S on the control panel C1 side which are returned from the relay panel R1 and returned. The return data RD converted by the P converter 6T should match. In order to confirm this match, the CPU 1T1 compares the transferred operation data TD with the return data RD.

If the data match is determined, the CPU
1T1 outputs the good signal GD to the holding circuit 7 of the relay board R, and outputs the held operation data TD to the relay group 5. As a result, the data is sent to the upper monitoring panel or another control panel by the contact-on operation of the relay group 5.

However, as a result of the data comparison in the CPU 1T1, if it is determined that the operation data TD and the return data RD do not match, it means that the data transfer was not correctly performed, and the CPU 1T1 sends the failure signal FD to the first signal. Output to relay board R through two transmission paths. Failure signal F
D is sent to the setting circuit 8 of the relay board R1, and the value set in the setting circuit 8 is transferred to the holding circuit 7. When the value is transmitted to the relay group 5 instead of the operation data TD,
Relay group 5A operates according to the value. If the value set in the setting circuit 8 is set to a value that shifts the operation of the device to the safe side, for example, a value that stops or protects the device, if the data transfer is not performed correctly, The operation is to operate the relay group 5 so as to forcibly shift to the safe side.

By configuring the present embodiment as described above,
The CPU on the side of the relay board R1 is not required as compared with the conventional apparatus.
Although two independent transmission lines are required as in the conventional device, any mode of any part of the two transmission lines, the respective S / P converters 2R1 and 6T and the respective P / S converters 2T1 and 6R is required. A mistake can be found for the mistake, and the operation of the apparatus can be promptly shifted to the safe side.

Embodiment 2 In the first embodiment, the operation data TD S / P converted by the relay board R1 is P / S converted and then transferred to the control board C1 as return data RD. In the present embodiment, the operation data TD is transferred to the relay board R1. The received operation data TD is input to the relay panel-side S / P converter 2R1 and branched to the control panel C1 as return data RD. Then, after performing S / P conversion as in the first embodiment, the CPU 1
At T1, it is compared with the operation data TD.

When the apparatus is configured in this manner, the reliability of the transmission path from the S / P converter 2R1 on the relay panel side to the holding circuit 7 is high, and the possibility of noise on operation data in this transmission path is extremely low. From the input terminal of the operation data from the CPU 1T1 to the relay board side S / P converter 2R1 on the first transmission path or from the input end of the relay board side S / P converter 2R1.
When the possibility of occurrence of a data transfer error is higher due to noise or the like on the second transmission path of the return data reaching PU1T1, the same effect as in the first embodiment is obtained and the relay board side P / S converter 6R Is unnecessary, and the configuration of the apparatus is simplified.

Embodiment 3 In the first and second embodiments, the control panel side P / S converter 2T1 and the relay panel side S / P converter 2
A first transmission line for operation data TD is provided between the first transmission line and R1;
Further, the second transmission line for the return data RD is provided between the control panel side S / P converter 6T and the relay panel side P / S converter 6R, but in the present embodiment, the transmission line is connected to the operation data TD. And the return data RD.

The present embodiment will be described below with reference to the drawings. FIG. 3 is a configuration diagram of the data transfer device according to the present embodiment. In the drawing, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts. According to the present embodiment, the control panel C2 and the relay panel R
One transmission line is laid between the two, and one end of the transmission line is switched within the control panel C2 by a switch (control panel switching means)
Connect to 9T movable contact C. Further, the other end of the transmission path is connected to the movable contact C of the changeover switch (relay panel side switching means) 9R in the relay panel R2.

One fixed contact a of the changeover switch 9T
Is connected to the output of the control board side P / S converter 2T1, and the other fixed contact b is connected to the output of the control board side S / P converter 6T. One fixed contact a of the changeover switch 9R is connected to the input of the relay-side S / P converter 2R1A, and the other fixed contact b is connected to the input of the relay-side P / S converter 6R.

The switching operation of the changeover switch 9T is performed by the control signal CC from the CPU 1T1 when the CPU 1T1 confirms the completion of the transfer of the operation data.
The switching operation of the changeover switch 9R is performed by the relay panel side S
/ P converter 2R1A transmits S /
When confirming the end of P conversion, relay panel side S / P converter 2
This is performed by a control signal CR from R1A.

Next, the operation of this embodiment will be described. First, when the operation data is transferred from the control panel C2 to the relay panel R2, the movable contact c is supplied to the fixed contact a by the control signal CC by the initial operation of the CPU 1T1. In the relay panel R2, the relay panel side S / P converter 2R1A
The movable contact c is applied to the fixed contact a side by the control signal CR from the control circuit. When the changeover switches 9T and 9R are simultaneously turned on to the fixed contact a side in this manner, the control panel side P / S converter 2
A transmission line for operating data transfer is established between T1 and the relay panel side S / P converter 2R1A, and the operation data TD of the relay group 5 is transmitted from the control panel C2 to the relay panel side S / P converter 2R1A.
Can be transferred to

If the CPU 1T1 of the control panel C2 determines that the operation data TD has been transferred from the result of counting the number of data to be transferred, the CPU 1T1 outputs a control signal CC to the changeover switch 9T to switch the movable contact c. Fixed contact b
Switch to On the other hand, also in the relay board R2, if the relay board side first S / P converter 2R1A determines that the S / P conversion of the transferred operation data is completed, the control signal CR
Is output to the changeover switch 9R to switch the movable contact c to the fixed contact b.

When the changeover switches 9T and 9R are simultaneously turned on to the fixed contact b side in this manner, transmission for return data transfer is performed between the control panel side S / P converter 6T and the relay panel side S / P converter 6R. The route is switched, and the return data RD is transmitted to the control panel side S / P converter 6 through the relay side P / S converter 6R.
Transferred to T. According to the above configuration, the same effect as in the first embodiment can be expected even with a single transmission path between the control panel C2 and the relay panel R2. In the first embodiment, the changeover switches 9T and 9R of both the control panel C2 and the relay panel R2 have been described as mechanical switches. However, the electronic switches having no movable parts are employed to improve the reliability of the apparatus. May be increased.

Embodiment 4 FIG. Embodiments 1 to 3 above
Has determined whether a data transfer error has occurred by comparing the operation data with the return data.In this embodiment, the control panel determines whether the relay group has operated normally based on the transferred operation data. Determines the normal transfer of operation data.

FIG. 4 is a configuration diagram of the data transfer device according to the present embodiment. In the drawings, the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding parts. In the figure, R3 is a relay panel according to the present embodiment. As in the first to third embodiments, the receiving side S / P converter 2R1 and the relay panel side P / S converter 6R are included, but the receiving side S / P converter 2R1 relays operation data for the number of parallel data. Output to each relay coil of group 5A. The corresponding relay contact is turned on by the energization of each relay coil of the relay group 5A, and data is sent to the upper monitoring panel or another control panel.

Each contact of the relay group 5A is connected to the relay group 5A.
B is connected to each relay coil, and is energized by the on operation of each contact of the relay group 5A to turn on the corresponding relay contact of the relay group 5B. In the relay group 5B, for example, a + potential is applied to one end of each relay contact provided for the number of parallel data, and the other end is connected to an input portion of the relay board side P / S converter 6R. Failure signal F from CPU 1T on the control panel side
When D is input, the relay coil of the relay 5C is energized to turn on the relay contact, thereby notifying the upper monitoring panel or another control panel of a data transfer abnormality.

Next, the operation of this embodiment will be described. The serial operation data TD transferred from the transmission-side P / S converter 2T1 to the relay board R3 through the transmission path is S / P-converted by the reception-side S / P converter 2R1, and the operation data is converted into each relay coil of the relay group 5A. Is input to For example, the converted parallel data is 6 of "110011".
If the data is bit configuration, each relay of the relay group 5A corresponding to each bit position operates if the data is 1, 0
If so, it does not work. In this case, relays 1, 2, 5, and 6 operate, and relays 3 and 4 do not operate.

As described above, when the relays 1, 2, 5, and 6 operate and the relays 3 and 4 do not operate, the relays 1, 2, 5, and 6 in the relay group 5B operate, and the relays 3 and 4 operate. An operation is performed, and the corresponding contact is turned on or off.
When the contact is turned on, the positive potential is set to 1 and the relay board side P / S
The contact that is input to the converter 6 and turned on inputs 0 to the relay panel-side P / S converter 6R. As a result, the relay board side P
The parallel data of "110011" is input to the / S converter 6R by each contact output.

The parallel data of "110011" is P / S converted by the relay board side P / S converter 6R, and is returned as control data S / S through the second transmission line as return data RD.
The data is input to the P converter 6T, converted into the operation data TD of the original parallel data, and input to the CPU 1T1. CP
U1T1 compares the transferred operation data with the returned operation data to determine a match or a mismatch. Then, if the coincidence is determined, the transfer and return of the operation data and the normal operation of each of the relay groups 5A and 5B are determined.

However, when it is determined that the operation data TD transferred by the CPU 1T1 and the return data RD do not match, the transmission path from the transfer of the operation data from the CPU 1T1 to the return of the operation data is not used. Alternatively, it is determined that an abnormality has occurred in any of the relay groups 5A and 5B, and the failure signal FD is output to the relay 5C of the relay panel R3 to operate the relay panel R3. To notify that there is a transmission error.

In the configuration of the present embodiment, when a transmission error is detected, the relay panel R3 cannot forcibly operate the relay groups 5A and 5B so that the apparatus shifts to the safe side. It is possible to detect whether all the circuits including up to 5A have been operated correctly, and if not, it is possible to notify an upper monitoring panel or another control panel that the transmission is abnormal.

Embodiment 5 FIG. In the first to third embodiments, the CPU 1T1 determines whether or not the data transfer has been correctly performed.
Is not transmitted correctly, the failure signal FD is individually transmitted through each signal line.

In the present embodiment, a good signal or a failure signal is sent as a determination signal to the relay board R1 through one signal line, and it is determined that the sent determination signal is a good signal or a failure signal. If it is determined that the signal is a signal, the determination signal is input to the holding circuit as a good signal RD, and if the signal is a failure signal, it is input to the setting circuit 8 as a failure signal FD.

FIG. 5 is a configuration diagram of a relay panel according to the present embodiment. This relay panel includes a signal separating circuit 10 in addition to the configuration of the relay panel according to the first to third embodiments. The signal separating circuit 10 receives the judgment signal GFD input from the control panel C1 in place of the good signal GD and the fault signal FD, and separates the good signal GD or the fault signal FD from the judgment signal GFD according to the presence thereof. Then, the good signal GD is inputted to the holding circuit 7 and the failure signal FD is inputted to the setting circuit 8.

FIG. 6 shows a signal separating circuit 1 according to the present embodiment.
FIG. In the figure, each of 10A, 10B and 10C is a one-shot circuit, which generates a pulse having a pulse width of a predetermined time by detecting a falling edge, a rising edge and a falling edge of an input signal.

FIG. 7 shows waveforms at various points in FIG. C
It is assumed that the determination signal GFD transmitted from PU1T1 has the following rules. If the transfer is performed correctly, one pulse is sent, and then another pulse is sent after a certain time. If it is not performed correctly, only the first one pulse is sent and the second pulse is not sent.

Here, for example, in the judgment signal GFD,
Fall of the first pulse is one shot 10
A and 10C are input, and operate when signals Fa and G are input, respectively.
a is output. When the signal Fa rises after a predetermined time and is input to the one-shot 10B, the signal Fb becomes the first signal.
Is output to the AND circuit AN1.

While the signal Ga output by the operation of the one-shot 10C is input to the second AND circuit AN2, the signal GFD is further converted to one pulse by the second AND circuit AN2.
When the signal is input to the circuit AN2, it is output from the second AND circuit AN2 as an H good signal GD. Second AND circuit AN
Since the good signal GD higher than 2 is also input to the NOT circuit NT and input to the first AND circuit AN1 as an L signal, Fb is canceled and the signal FD is not output. As a result, the good signal GD is input from the signal separation circuit 10 to the holding circuit 7.

However, the signal Ga is obtained from the one-shot 10C.
When the second signal of the determination signal GFD is not input to the second AND circuit AN2 while the signal is input to the second AND circuit AN2, the output of the second AND circuit AN2 becomes L and outputs the good signal GD. do not do. However, since the L signal from the second AND circuit AN2 is input to the NOT circuit NT, it is inverted to H and input to the first AND circuit AN1. One shot 10B is applied to the first AND circuit AN1.
Since Fb is input, the failure signal FD is output to the setting circuit 8.

According to the above configuration, the CPU 1T determines whether or not the data transfer has been performed normally. If not, the determination signal GFD indicating the failure signal FD if not, and the determination signal indicating the good signal if normal. The GFD is sent to the signal separation circuit 10 of the relay board 1R. The signal separation circuit 10 outputs the judgment signal GFD
Is determined, and if the signal is a good signal GD, the holding circuit 7
If it is a failure signal FD, it is sent to the setting circuit 8.

[0057]

According to the first aspect of the present invention, a relay board which is constituted by a plurality of relays and operates each controlled object by the contact output of these relays, and which is arranged at a distance from the relay board, and has a transmission line A control panel for transferring operation data according to the control contents to each relay via the control panel, generating operation data according to the control contents for the control panel, and transferring the operation data to each relay via the transmission path. Data generating means for comparing the operation data returned from the relay panel via the transmission path with the transferred operation data, and transmitting a determination signal indicating a match / mismatch determination result to the relay panel. A data holding means for temporarily holding the operation data transferred from the data generation means via the transmission path to the relay panel, and the temporarily held operation data via the transmission path. Data return means for returning to the determination means, and relay operation means for transmitting the operation data held in the data holding means to a relay based on the determination signal input from the determination means. There is an effect that the reliability of data transfer to the relay panel can be improved.

According to the second aspect of the present invention, a relay board which is constituted by a plurality of relays and operates each controlled object by the contact output of these relays, and is arranged at a distance from the relay board, and is arranged via a transmission line. A control panel for transferring operation data according to the control content to each of the relays, wherein the control panel includes:
Data generating means for generating operation data according to the control content and transferring the data to the relays via the transmission path, and the operation data returned from the relay panel via the transmission path and the operation data transferred And a determination means for sending a determination signal indicating the match / mismatch determination result to the relay panel. The relay panel is provided with operation data transferred from the data generation section via the transmission path. Relay operating means for operating each relay; data returning means for converting an operation state of each relay based on the operation data into a mode of the operation data and returning the data to the determination means via the transmission line; and An operation restricting means for restricting the operation of each of the above-mentioned relays when a mismatch judgment signal is input is provided, so that the reliability of the data transfer from the control panel to the relay panel is improved and the transfer is performed. There is an effect that a constantly device operation can quickly transition to a safe state.

According to the third aspect of the present invention, there is provided a P / S converter for converting the parallel operation data generated by the data generator on the control panel side into serial data and transferring the serial data, and is returned to the determiner. S / P converter converts the received operation data to parallel data and matches the transferred operation data.
An S / P converter for performing a discrepancy determination and converting the operation data transferred to the holding means on the relay side into parallel data to generate operation data for the relay operation; And an S / P converter for serially converting the transmission path and returning the result to the determination means, so that any part of the transmission line / S / P converter and the P / S converter can be used without using a CPU on the relay panel side. Since an error in any mode can be detected, the reliability of data transfer can be improved.

According to the fourth aspect of the present invention, there is provided a P / S converter for converting the parallel operation data generated by the data generator on the control panel side into serial data and transferring the serial data. S / P converter converts the received operation data to parallel data and matches the transferred operation data.
The holding means on the relay panel side converts the transferred operation data into parallel data by the S / P converter to generate the held data, and determines the transferred operation data by the determination means. By returning it to the / P converter,
The relay panel side has an effect that the S / P converter is not required and the device can be simplified.

According to the fifth aspect of the present invention, a transmission path is provided between the control panel and the relay panel, and one end of the transmission path is connected to the output of the P / S converter and the S / P converter by the control panel. A control panel switching means for switching to an input unit; and a relay panel switching means for switching the other end of the transmission line between an input unit of an S / P converter and an output unit of a P / S converter by a relay panel. Since the transmission of the operation data from the control panel to the relay panel and the return of the operation data from the relay panel to the control panel are performed by switching and selecting one transmission path, the transmission path is used to transfer the operation data. Since it can be used for sending back data, the device can be simplified.

According to the sixth aspect of the present invention, the relay panel is provided with the setting means for inputting the preset information for regulating the operation of the relay to the holding means and transmitting the information to the relay when the mismatch judgment signal is inputted from the control panel. When the data transfer is not correctly performed, there is an effect that the relay group can be forcibly operated so as to shift the operation of the device to the safe side.

According to the seventh aspect of the present invention, the coincidence determination signal or the non-coincidence determination signal is separated from the determination signal input from the control panel to the relay control panel. Since the signal separation means for inputting and discriminating the mismatch determination signal and inputting this signal to the determination means is provided, a good signal and a failure signal can be shared by one signal line, so that the apparatus can be simplified. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a data transfer device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a data transfer device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a data transfer device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a data transfer device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a data transfer device according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram illustrating an example of a signal separation circuit in the data transfer device according to the embodiment of the present invention.

FIG. 7 is a diagram showing operation waveforms of the example of the signal separation circuit according to the present embodiment.

FIG. 8 is a configuration diagram showing a conventional parallel data transmission circuit between a control panel and a relay panel.

FIG. 9 is a configuration diagram showing a conventional serial data transmission circuit between a control panel and a relay panel.

FIG. 10 is a block diagram illustrating a configuration of a conventional data transfer device of this type.

[Explanation of symbols]

1T1 CPU, 2T1 Parallel / serial converter on control panel side, 2R1, 2R1A Serial / parallel converter on relay panel side, 5 relay group, 5A Relay group for output from relay panel, 5B relay group for input to relay panel ,
5C Relay for abnormality notification, 6T Serial / parallel converter on control panel side, 6R Parallel / serial converter on relay panel side, 7 holding circuit, 8 setting circuit, 10 signal separation circuit, C1, C2 control panel, R1-R3 Relay board.

Claims (7)

[Claims] 1. A relay panel comprising a plurality of relays, each of which operates a controlled object by a contact output of these relays, and a relay panel which is arranged at a distance from the relay panel, and controls each of the relays via a transmission line so as to provide control contents to the relays. A control panel for transferring operation data according to the control panel, wherein the control panel generates operation data according to the control content and transfers the data to each of the relays via the transmission path; and a relay panel. And comparing the operation data returned via the transmission path with the transferred operation data, and transmitting a determination signal indicating a match / mismatch determination result to the relay panel. Data holding means for temporarily holding the operation data transferred from the data generation means via the transmission path, and returning the temporarily held operation data to the determination means via the transmission path. Data transfer apparatus for a data return means, characterized in that the operation data held in the data holding unit based on the determination signal input from the determining means and a relay operation means for sending to the relay that. 2. A relay panel comprising a plurality of relays, each relay being operated by a contact output of these relays, and a relay panel arranged at a distance from the relay panel. A control panel for transferring operation data according to the control panel, wherein the control panel generates operation data according to the control content and transfers the data to each of the relays via the transmission path; and a relay panel. And comparing the operation data returned via the transmission path with the transferred operation data, and transmitting a determination signal indicating a match / mismatch determination result to the relay panel. Relay operation means for operating each relay based on operation data transferred from the data generation means via the transmission path; and operating the operation status of each relay based on the operation data. Data return means for converting the data into a data mode and returning the data to the determination means via the transmission path, and operation restriction means for restricting the operation of each of the relays when a mismatch determination signal is input from the determination means. A data transfer device characterized by the above-mentioned. 3. The data generating means on the control panel side includes a P / S converter for converting the generated parallel operation data into serial data and transferring the data, and the determining means converts the returned operation data into S / S data. The P converter converts the data into parallel data and makes a match / mismatch determination with the transferred operation data. The holding means on the relay panel side converts the transferred operation data into parallel data and converts the operation data for the relay operation. An S / P converter for generating the data, and the returning means serially converts the operation data to be returned and returns the serial data to the determining means.
The data transfer device according to claim 1, further comprising a / P conversion unit. 4. The data generating means on the control panel side includes a P / S converter for converting the generated parallel operation data into serial data and transferring the data, and the judging means converts the returned operation data into S / P data. The conversion unit performs a match / mismatch determination with the operation data converted into parallel data and transferred, and the holding unit on the relay side converts the transferred operation data into S / S data.
2. A method according to claim 1, wherein the P-converter converts the data into parallel data to generate held data, and returns the transferred operation data to the S / P converter of the determination means.
A data transfer device according to claim 1. 5. A transmission line is provided between a control panel and a relay panel,
A control panel-side switching means for switching one end of the transmission line to an output unit of a P / S conversion unit and an input unit of an S / P conversion unit by the control panel; and the other end of the transmission line to the relay panel. S /
A relay panel switching means for switching between an input section of the P converter and an output section of the P / S conversion section; transfer of operation data from the control panel to the relay panel; and operation from the relay panel to the control panel. 5. The data transfer apparatus according to claim 1, wherein data is returned by switching and selecting said one transmission path. 6. The relay panel according to claim 1, wherein the relay panel further includes a setting unit that inputs preset information for restricting the operation of the relay to a holding unit and transmits the information to a relay when a mismatch determination signal is input from the control panel. 6. The data transfer device according to any one of 3 to 5. 7. A relay control panel separates a match determination signal or a mismatch determination signal from a determination signal input from the control panel, and when the match determination signal is separated, inputs the signal to a holding unit to separate the mismatch determination signal. 7. The data transfer device according to claim 6, further comprising a signal separating unit for inputting the signal to the setting unit.