JP2002193561A - Elevator control transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator control transmission system capable of improving transmission efficiency of the whole of the system. SOLUTION: A master station 1 transmits display data between transmission of lower rank address data and higher rank address data divided into two. A slave station 2 receives the display data on the basis of the transmission interval between the lower rank address data and the higher rank address data, and outputs it for display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control transmission system for transmitting control information of an elevator between a master station and a slave station to control the elevator.

[0002]

2. Description of the Related Art Generally, a plurality of control devices are provided for controlling an elevator, of which a command is output from a master station to a slave station to control the elevator. For example,
Elevator that connects the control device of the elevator and the hall operation panel or car operation panel provided on each floor by a transmission line, and configures the control device of the elevator as a master station and the hall operation panel or car operation panel as a slave station There is a control transmission system. In such an elevator control transmission system, control information is cyclically exchanged between a master station and a slave station.

In this case, address information is sent from the master station to the transmission line, and the slave station corresponding to the address responds to input / output. That is, the slave station receives the address information, and the slave station performs the data transmission response and the data writing process when the address information is correctly received from the master station.

When a large amount of data such as display data is transmitted from a master station to a slave station, L data other than the control transmission system is used.
An AN is used, display data is sent by a control transmission system by temporarily interrupting transmission of control information, or display data is divided and transmitted at a time when control information is not sent.
Since the display data transmitted from the master station to the slave station is directly written in the display buffer, the transmitted display data is displayed as it is.

[0005] Further, the time interval for sending data cyclically is fixed, and transmission is performed at a fixed time interval regardless of whether the number of information transmission points is small or large. This allows
The information update interval is set to be constant.

[0006]

However, in such an elevator control transmission system, the amount of information transmitted is limited because the data transmission time interval is fixed. In particular,
When transmitting information having a large amount of information such as display data for a message, a LAN other than the control transmission system is used, transmission of control information is interrupted in the control transmission system, and display data is transmitted. Display data must be divided and transmitted using a control transmission system at a time when control information is not transmitted.

Further, since the display data is directly written in the display buffer, when the display data changes and is transmitted, the display content changes accordingly. Therefore, when the display data is divided and sent, there may be a discontinuity in the display contents before and after. In order to prevent this, it is necessary to limit the display update time, and in such a case, the transmission efficiency of the system deteriorates.

On the other hand, when the number of transmission information points is small, the time interval at which data is transmitted is fixed because the time interval at which data is transmitted cyclically is fixed, so that the ratio of time during which information transmission is performed becomes smaller than the entire time. The information transmission time in the time interval may be short.

An object of the present invention is to provide an elevator control transmission system capable of increasing the transmission efficiency of the entire system.

[0010]

The elevator control transmission system according to the first aspect of the present invention is an elevator control transmission system for transmitting serial control serial information from a master station to a slave station by designating an address of an elevator control information. The master station divides the address into lower address data and upper address data, and inserts and transmits display data to be transmitted to the slave station between the upper address data and the lower address data. The slave station receives the display data between the upper address data and the lower address data, and outputs and displays the display data.

In the elevator control transmission system according to the first aspect of the present invention, the master station inserts display data between the divided lower address data and upper address data and transmits the data. The slave station receives and displays and outputs the display data based on the transmission interval between the lower address data and the upper address data.

According to a second aspect of the present invention, in the elevator control transmission system according to the first aspect, the master station continuously sends the same display data a plurality of times, and the slave station transmits the same display data. The data is received as correct display data.

[0013] In the elevator control transmission system according to the second aspect of the present invention, in addition to the operation of the first aspect, the master station continuously sends the same display data to the slave station a plurality of times. The slave station determines whether or not the same plurality of display data matches, and performs reception processing on the matching display data as correct display data. This prevents erroneous reception due to transmission noise.

According to a third aspect of the present invention, in the elevator control transmission system according to the first aspect, the master station comprises:
The display data to be transmitted to the slave station is divided and inserted between the upper address data and the lower address data and transmitted, and the slave station converts the received divided display data into one display data. It is characterized in that it is displayed when it is output.

In the elevator control transmission system according to the third aspect of the present invention, in addition to the operation of the first aspect, when the display data transmitted to the slave station is large, the master station divides the display data into the lower address data and the upper address data. It is inserted between address data and transmitted. The slave station outputs a display when the received divided display data becomes one display data. This prevents a sense of incongruity from occurring when switching the display data.

According to a fourth aspect of the present invention, in the elevator control transmission system according to the second aspect, when the display data cannot be correctly received and processed, the slave station notifies the master station of the fact that the display data cannot be correctly received. Is characterized in that the slave station retransmits the display data that could not be correctly received.

In the elevator control transmission system according to the invention of claim 4, in addition to the effect of the invention of claim 2, when the display data cannot be correctly received and processed, the slave station notifies the master station of the fact. The master station resends the display data that the slave station did not receive correctly, and eliminates transmission information leakage at the slave station.

According to a fifth aspect of the present invention, in the elevator control transmission system according to the first aspect, the master station comprises:
It is characterized in that a cyclic transmission cycle to be transmitted to the slave station is changed according to a maximum transmission address value.

In the elevator control transmission system according to a fifth aspect of the present invention, in addition to the operation of the first aspect, the master station changes a cyclic transmission cycle to be transmitted to the slave station according to the maximum transmission address value. Then, the update cycle of the control information and the display data is shortened.

According to a sixth aspect of the present invention, in the elevator control transmission system according to the fifth aspect, the slave station receives a frequency-divided signal from the master station every transmission cycle,
It is characterized by displaying that the slave station is operating normally based on the frequency-divided signal.

In the elevator control transmission system according to the sixth aspect of the present invention, in addition to the operation of the fifth aspect, the slave station utilizes a frequency-divided signal received from the master station every transmission cycle. For example, the fact that the slave station is operating normally is used to count the frequency-divided signal and display flicker at each predetermined count value.

[0022]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of an elevator control transmission system according to a first embodiment of the present invention. The master station 1 and a plurality of slave stations 2 are connected by a transmission line, and are basically composed of the same elements. For example, the control device of the elevator is the master station 1, and the hall operation panel and the car operation panel of each floor are the slave stations 2. Then, the control information is cyclically transmitted from the master station 1 to the slave station 2, and the control information is exchanged between the master station 1 and the slave station 2.

The slave station 2 is basically composed of the same elements as the master station 1. However, in the first embodiment, the slave station 2 has no setting table 5a,
The master station 1 has a unique address of the slave station 2, and the master station 1 specifies the address and transmits the control information for the elevator to the corresponding slave station 2 in a cyclic serial manner.

The storage information 4a of the master station 1 stores the control information created by the arithmetic means 3a as a setting table 5a. The display data transmitted to the slave station 2 is transmitted from the information data server 9 to the arithmetic unit 3 of the master station 1.
a.

The transmission control means 6a divides the address of the setting table 5a into lower address data and upper address data, and when there is a display data transmission request from the arithmetic means 3a, the divided lower address data and upper Display data is inserted between the address data and the slave station 2
Send data to

On the other hand, the storage means 4b of the slave station 2
The address set corresponding to the control information of the elevator controlled by itself is stored.
If the address received from the transmission control means 6a (address indicated by being divided into lower address data and upper address data) is its own address, a response operation is performed based on the control information of the address, The result is displayed on the operation display means 8 as necessary.

When display data is inserted between the lower address data and the upper address data,
The display data is taken out and displayed on the operation display means 8.
Further, the transmission input / output unit 7 transmits operation information input from the operation display unit 8 to the master station 1 based on a command from the master station 1.

FIG. 2 is an explanatory diagram of the setting table 5a used in the master station 1. For example, the setting table 5a
Has n transmission tables 1 to n, and cyclically transmits the contents of the n transmission tables 1 to n to the slave station. One transmission cycle is defined as a scan time, and the scan time is changed according to the number of transmission points.
For example, it is set to 1 / n of the basic timer set value set at the time of the maximum number of transmission points. In this case, n is set based on the amount of transmission information. Thus, the transmission cycle is changed according to the maximum transmission address value. It should be noted that n is a scan cycle frequency division value and is transmitted from the master station 1 to the slave station 2 as system information.

Each transmission table includes a start address, an end address, and a transmission type. Transmission types are "talker", "listener", "setting / broadcast",
In the test mode operation described later, a test check transmission of only the "talker" and "listener" settings is performed. In the “setting / broadcast” setting, the master station 1 performs a talk operation. In the case of the "table end" setting, the transmission operation is not executed, and the transmission operation is executed again from the first table after a predetermined time has elapsed. This setting table 5
The transmission addresses stored in "a" are set in ascending order, and do not overlap.

FIG. 3 is an explanatory diagram of a transmission operation between the master station 1 and the slave station 2. FIG. 3 (a) is an explanatory diagram of a master talker transmission operation, and FIG. 3 (b) is a diagram of a master listener transmission operation. FIG. 3C is an explanatory diagram of the transmission operation of the display data.

In FIG. 3A, the master talker transmission operation is used when information is transmitted from the master station 1 to the slave station 2 (when data is written). First, an address is transmitted from the master station 1. When transmitting the address, the address is divided into lower address data and upper address data and transmitted (A1, A2). Then, display data is inserted and transmitted during the time interval T. After the transmission of the address is completed, data (control information of the elevator) is transmitted (B). The slave station detects whether or not the address matches the address assigned to itself (C), and if so, receives the transmitted data and outputs it to an external display or the like (D).

As described above, the address is transmitted while being divided into the lower address data and the upper address data, and transmitted at time intervals corresponding to the contents of the display data. The received slave station restores the display data based on the reception completion interval time between the lower address data and the upper address data.

In FIG. 3B, the master listener transmission operation is used when information is transmitted from the slave station 1 to the master station 2. First, the address of the slave station 2 to which information is provided from the master station 1 is transmitted. Also in this case, as in the master talker transmission operation of FIG. 3A, when transmitting the address from the master station 1, the address is divided into lower address data and upper address data and transmitted (A1, A2). . Then, display data is inserted and transmitted during the time interval T, and reception of data from the slave station 2 is waited.

The slave station 2 detects whether the address matches the address assigned to itself (B),
If they match, switch data is input and the data is transmitted to the master station 1 (C). The master station 1 receives the transmitted data and stores it as data from the slave station 2 (D). Also in this case, the display data is transmitted from the master station 1 to the slave station 2 as in the case of the master talker.

In FIG. 3C, when there is a display data transmission request, the master station 1 divides the display data and sends the display data in scan time units. That is, the divided display data is inserted into each of the lower address data and the upper address data and transmitted, and one transmission cycle (one scan time)
Send display data with. In this case, the display data is inserted and inserted between the lower address data and the upper address data, and the same display data is used three times in succession.

In the slave station 2, the same display data is 3
Since the data is sent consecutively, they are compared with each other, and the matching display data among them is received and processed as correct display data. When display data is normally received, the reception OK information of the display data is sent to the master station 2 for each scan time unit. When there is reception OK information, the master station 1 sends another display data at the next scan time, and
If there is no K information, the same display data is sent again.

Then, when the last display data has been sent, the master station 1 transmits display update OK information to the slave station 2, and the slave station 2 receiving this updates the display content. Note that the reception OK information and the display update OK information use a fixed address in the control information.

As described above, according to the first embodiment, the address is divided into two and transmitted from the master station 1, and the information is transmitted to the slave station 2 based on the address transmission interval time. In addition to transmitting and receiving information, display data can be transmitted from the master station 1 to the slave station 2. As a result, the amount of information that can be taken out without adding a complicated circuit can be increased, and the transmission efficiency of the entire system can be increased.

Next, a second embodiment of the present invention will be described. FIG. 4 is a configuration diagram of an elevator control transmission system according to a second embodiment of the present invention. The second embodiment is different from the master station 1 and the slave station 2 of the first embodiment.
Is applied to a control device for controlling an elevator.
That is, the master controller 11 becomes the master station,
The hall controller 12 and the car controller 13 are configured to function as slave stations. Then, the display data is supplied from the information data server 9 to the master controller 11 via the information transmission line 10.

In FIG. 4, the master controller 11
Is connected to a hall controller 12 for performing switch input and display output in an elevator hall and a car controller 13 for performing switch input and display output inside an elevator car by a line transmission system 14, and performs system control and car operation control. Do. In this case, the master controller 11
Operates as a master station, and the hall controller 12 and the car controller 13 operate as slave stations.

The master controller 11 is connected to the information data server 9 through an information transmission line 10. The information data server 9 stores display data to be displayed by the hall controller 12 and the like. Hand over.

FIG. 5 is a configuration diagram of the master controller 11. 5, the host CPU 17 corresponds to the calculating means 3a in FIG. 1, and the common RAM 18 is the storage means 4 in FIG.
a, and the master transmission interface circuit 19 and the RS485 interface 20 correspond to the transmission control means 6 in FIG.
a. The information server interface 15 is not shown in FIG.
And an interface with the host CPU 17.

The host CPU 17 is connected to the master transmission interface circuit 19 via the CPU control signal line 21 and the local bus 22, and controls the operation of the car and creates transmission data. An information server interface 15 is provided on the local bus 22, and the host CPU 17 receives display data from the information data server 9 via the information transmission line 10. The host CPU 17 transfers the received contents to the common RAM 18 via the master transmission interface unit 19.
And a display data transmission request is written into the register section of the master transmission interface section 19.

The master transmission interface circuit 19 writes and reads transmission setting data (setting table) and transmission input / output data to and from the common RAM 18 by RAM input / output signals. That is, the host CPU 17 sends the common RAM 1 to the master transmission interface circuit 19.
8), and the master transmission interface circuit 19 inputs and outputs data to and from the common RAM 18.

The master transmission interface circuit 19
Are connected to the line transmission system 14 via the RS485 interface 20 to transmit and receive signals. When receiving the transmission execution command from the host CPU 17, the master transmission interface circuit 19 reads the transmission operation setting data of the setting table from the common RAM 18 and performs transmission / reception processing according to the data content.

FIG. 6 is an internal configuration diagram of the master transmission interface circuit 19 shown in FIG. The CPU bus interface 23 of the master transmission interface circuit 19
It is connected to a CPU control signal line 21 from the host CPU 17 and a local bus 22, and the CPU bus interface 23 stores operation settings from the host CPU 17 in an internal control register. The operation settings include a transmission start (including a display data transmission request), an operation mode, a timeout time, and the like.

Further, the number of times of occurrence of the abnormal transmission state and the like are stored in an internal control register so that the host CPU 17 can read the information. Operation settings and transmission error information
It is exchanged with the line master interface circuit 24 by the line CPU input / output signal s1. Common RAM 17
When there is an access request to the host CPU 17, the CPU bus interface 23
The data is directly input to and output from the RAM interface 26 using the RAM input / output signal s3.

The line master interface circuit 24 receives the operation setting from the host CPU 17 as the line CPU input / output signal s1 and starts the transmission operation. In this case, a read request for setting data is made to the RAM interface 26, and data is obtained as the line RAM input / output signal s4. Based on the result, input / output of the line transmission signal s6 and the line reception signal s7 is performed.

In the RAM interface 26, the line R
It receives two types of requests, the AM input / output signal s4 and the CPU direct RAM input / output signal s3, selects one of them, and performs data input / output with the common RAM 18 using the RAM input / output signal s10.

FIG. 7 shows a line master interface circuit 2.
4 is a configuration diagram of FIG. The setting reading operation circuit 27
When an operation permission is given based on the operation setting signal on the line CPU input / output signal s1 from the U bus interface 23, the transmission operation starts. Here, the initialization operation starts,
A scan time timer and a table read address (not shown) are initialized. As described above, the scan time timer changes depending on the number of transmission points.

Next, the setting read operation circuit 27
The RAM read data d1 is taken out from the M interface 26 and taken in as transmission / reception setting data d2 and outputted. Based on the transmission / reception setting data d2, the start address in the data is used as the transmission address, and the data transmission / reception control unit 2
8 is written to the address register 29, and this is set as address transmission data d3. The address transmission data d3 is
The data is output to the transmission data generation circuit 30 and also output to the RAM interface 26.

When the address transmission data d3 is input, the transmission data generation circuit 30 receives an instruction from the transmission / reception control circuit 32 and divides the address into two to generate lower address data and upper address data. Further, the transmission data creation circuit 30 sends the display data from the common RAM 18 to the R via the data input / output operation circuit 34 based on the address value.
The AM read data d1 is taken out, and the time interval between the upper address and the lower address divided according to the size of the display data is set in the transmission interval timer 25. The transmission / reception control circuit 32 divides the address transmission into a lower address data transmission timing and an upper address data transmission timing, and transmits the transmission at intervals stored in the transmission interval timer 25. Here, as the display data inserted between the lower address data and the upper address data, the same data is used three consecutive times.

Thus, the transmission data creation circuit 30
Then, the serial transmission data d of the address and the display data
4 is generated and output to the serial data transmission / reception circuit 33. On the other hand, in the transmission / reception control circuit 32, the transmission request signal s11
Is output to the serial data transmission / reception circuit 33. As a result, the serial data transmission / reception circuit 33 converts the received serial transmission data d4 into a serial signal and outputs it as a transmission line transmission signal s6, and performs serial transmission of the address and the display data.

Next, when the transmission / reception setting content is control information data transmission (master talker), the data input / output operation circuit 3
4 stores control information data transmitted from the common RAM 18 in the RA.
M read data d1 and send data d5
To the transmission data creation circuit 30. The transmission data creation circuit 30 receives a command from the transmission / reception control circuit 32, creates serial transmission data d4 using the transmission data d5, and passes it to the serial data transmission / reception circuit 33. The transmission / reception control circuit 32 outputs the transmission request signal s11 to the serial data transmission / reception circuit 33 to perform serial transmission. The serial transmission / reception circuit 33 receives the serial transmission data d
4 is converted to serial and output as a transmission line transmission signal s6.

When the transmission setting is data reception (master listener), the transmission / reception control circuit 32 sends a reception request signal s12 to the serial data transmission / reception circuit 33. In the serial data transmission / reception circuit 33, the transmission line reception signal s
7 is subjected to serial / parallel conversion and taken out as serial received data d6. This is written in the data register 35 by a command from the transmission / reception control circuit 32.

When data is received, the data input / output operation circuit 34 sets a RAM write request on the line CPU input / output signal s1 and executes storage in the common RAM 18. When the address transmission and the data transmission / reception are completed, the setting read operation circuit 27 increments the value of the address register 29 by one and processes the data of the next address.

When the address value becomes the end address value in the setting data, the setting reading operation circuit 27 reads the next setting data and continues the transmission operation. Here, the abnormality processing circuit 36 performs a timeout process, an error process, and the like of the reception response time.

FIG. 8 is a flowchart showing the transmission operation of the master controller 11. First, processing for initializing a scan time and a read address of a transmission table is performed (S1). When the initialization is performed, the transmission table 5a stored in the storage unit 4a is read (S2), and it is determined whether or not all the tables of the transmission table 5a have been read in one cycle (S3). If the reading of the table has not been completed, the address of the table to be read is set (S4).

Next, it is determined whether or not there is a display data update request (S5). If there is a display data update request, the display data is taken out (S6). Then, the lower address data is transmitted (S7), and the control waits for a time set in the transmission interval timer 25 (S8). If there is display data during this time, the display data is transmitted. And
The upper address data is transmitted (S9).

Next, a transmission / reception time monitoring timer in the abnormality processing circuit 36 is set (S10), and it is determined whether or not control information is transmitted (S11). In the case of transmitting control information, a talker process is performed because the master station 1 is a master talker that transmits control information to a slave station. (S12).
On the other hand, if the control information is not transmitted, the master station 1 is the master listener that receives the information from the slave station 2, so that the listener processing is performed (S13).

Then, it waits for the end of the transmission / reception time monitoring timer and confirms that the processing has been performed normally (S1).
4), it is determined whether or not it is the last address in the transmission table (S15). If the address is not the last address in the transmission table, the next address is specified (S16), and step S16 is performed.
Return to 5. On the other hand, if it is the last address in the transmission table, the process returns to step S2 to process the month transmission table.

If it is determined in step S3 that all the transmission tables have been processed, the process waits for a scan time (S17). In other words, the process waits for a scan time, which is a transmission cycle for making a round of the processing of all the tables 5a, and determines whether the reception of the display data transmitted within the scan time is OK (S18). If the reception is OK, it is determined whether or not the transmission of the display data is completed (S19). If the transmission of the display data is completed, the display update OK information of the display data is output (S20). On the other hand, when the transmission of the display data is not completed, the display data extracting address is updated (S21), and the process returns to the step S1.

FIG. 9 is a configuration diagram of the hall controller 12. In FIG. 9, RS485 interface 2
0, serial data transmission / reception circuit 33, transmission input / output circuit 3
Reference numeral 8 corresponds to the transmission input / output unit 7 in FIG. 1, and the push button / display unit 41 and the address designation switch 48 correspond to the operation display unit 8 in FIG.

The hall controller 12 reads the set address s16 from the address setting switch 48. This is the address match detection circuit 31 in the transmission input / output circuit 38.
And is used as address check data for the data sent from the master controller 11. The input / output control circuit 43 in the transmission input / output circuit 38 starts transmission after the end of the address fetch operation.

In this case, transmission permission is given from the input / output control circuit 43, and the received data in the transmission line received signal s7 is serial-parallel converted through the serial data transmitting / receiving circuit 33 and is taken out as serial received data d6.

The serial data transmitting / receiving circuit 33 is connected to the RS 48
It is connected to the line transmission system 14 through the five interfaces 20. If there is data reception, the transmission line reception signal s7 is received from the RS485 interface 20. When the transmission line transmission signal s6 is sent from the serial data transmission / reception circuit 33, the RS485 interface 2
0 transmits data.

The received serial received data d6 is applied to the input / output register 44 and stored as read data d10. It is also applied to an address match detection circuit 31 to determine whether the address is a used address. The determination result is provided to the input / output control circuit 43 as a transmission input / output control signal s14.

The address signal is divided into lower address data and upper address data and sent. The reception time interval is confirmed by the address reception interval timer 36 and inserted between the lower address data and the upper address data. The displayed display data is input to the display data determination unit 37.

The display data determination section 37 compares the same three pieces of received display data, and if there is two pieces of display data that match, returns the display OK information of the display data to the master controller 11. At the same time, the display data is stored in the display data reception buffer 39. On the other hand, if they do not match, it is determined that invalid data has occurred, and the reception OK information is not returned to the master controller 11. When the display data stored in the display data receiving buffer 39 becomes one message display data, the display update OK information is received from the master controller 11 and output to the display data display buffer 40 collectively. As a result, one message display data is displayed and output on the information display section 42. As a result, the display can be updated properly, and a display without discomfort that only a part of one message is updated can be realized.

When the received address is the input address given from the address data, the operation mode is the transmission operation mode, in which the button input information input from the push button / display unit 41 is extracted and converted as serial transmission data d8 via the input / output register 44. The data is sent to the serial data transmission / reception circuit 33.

When the received address is an output address given from the address data, the receiving operation mode is set and the serial received data d6 received from the serial data transmitting / receiving circuit 33 is stored in the input / output register 44 and then pushed through the output buffer 46. Output to the button / display unit 41.

If the received address is a specially designated address, the internal transmission control register 4
5. Store the data. For example, when an address associated with the scan frequency setting value is received, the reception number counter 47 is incremented using the address, and the flicker count flag f is turned on / off using the counter value. As a result, the fact is displayed on the push button / display unit 41 so that the host controller 12 can recognize that the host controller 12 is operating normally.

As described above, the setting data includes the scan frequency setting value, and the scan frequency setting is sent periodically, so that the reception at this address occurs every time the frequency division number occurs. The reception counter 47 is increased by one. When the most significant digit of the number-of-times-of-reception counter 47 is used as the flicker display count flag f, flicker display to the outside is disabled only when the flicker display reception data is ON and the flicker display count flag f is ON.
N. Also, a display update OK signal is included. In response to the display update OK information being turned ON, the hall controller 12 transfers the display data to the display data display buffer 40.

[0074]

As described above, according to the present invention, in a system for serially transmitting control information of an elevator in a serial manner, a transmission address is divided into two parts, display data is inserted between them, and information is transmitted to a slave station. Therefore, it is possible to avoid taking a complicated configuration and to improve the transmission efficiency of the entire system.

Further, the display data to be transmitted from the master station to the slave station is displayed at the slave station after all the data of one message display data is received. Absent.

Further, since display data of the same content is continuously transmitted from the master station to the slave station a plurality of times, and matching data is processed as correct data, malfunction due to transmission noise is prevented. In addition, the slave station determines whether the display data has been correctly received. If the display data has not been received, the master station resends the display data, so that leakage of transmission data can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an elevator control transmission system according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a setting table used in a master station according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a transmission operation between a master station and a slave station according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of an elevator control transmission system according to a second embodiment of the present invention.

FIG. 5 is a configuration diagram of a master controller according to a second embodiment of the present invention.

6 is an internal configuration diagram of a master transmission interface circuit shown in FIG.

FIG. 7 is a configuration diagram of a line master interface circuit shown in FIG. 6;

FIG. 8 is a flowchart illustrating a transmission operation of the master controller according to the second embodiment of the present invention.

FIG. 9 is a configuration diagram of a hall controller according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... master station, 2 ... slave station, 3 ... arithmetic means, 4 ... storage means, 5 ... setting table, 6 ... transmission control means, 7 ... transmission input / output means, 8 ... operation display means, 9 ... information data server, 10 information transmission line, 11 master controller, 12 hall controller, 13 car controller, 14 line transmission system, 15 information server interface, 16 abnormality processing circuit, 17 host CPU, 18
... common RAM, 19 ... master transmission interface circuit,
20 RS485 interface, 21 CPU control signal line, 22 local bus, 23 CPU bus interface, 24 line master interface circuit, 25
... Transmission interval timer, 26 ... RAM interface, 27
... setting read operation circuit, 28 ... data transmission / reception control unit,
29: address register, 30: transmission data creation circuit,
31: Address matching circuit, 32: Transmission / reception control circuit, 33
... Serial data transmission / reception circuit, 34 ... Data input / output operation circuit, 35 ... Data register, 36 ... Address reception interval timer, 37 ... Display data judgment unit, 38 ... Transmission input / output circuit, 39 ... Display data reception buffer, 40 ... Display Data display buffer, 41 ... Push button / display part, 42 ... 4
3 ... I / O control circuit, 44 ... I / O register, 45 ...,
46: output buffer, 47: counter, 48: address setting switch

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Mishima 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in Fuchu Works, Toshiba Corporation 3F303 CA01 FA07 FA10 5K032 BA02 BA08 CC08 CD01 DA01 DB19 DB22

Claims (6)

[Claims] In an elevator control transmission system for transmitting serial control information for a lift from a master station to a slave station by specifying an address, the master station converts the address into lower address data and upper address data. Display data to be transmitted to the slave station is inserted and transmitted between the upper address data and the lower address data, and the slave station transmits the upper address data and the lower address data between the upper address data and the lower address data. An elevator control transmission system for receiving and outputting display data. 2. The apparatus according to claim 1, wherein the master station continuously sends the same display data a plurality of times, and the slave station receives matching display data among the display data as correct display data. Elevator control transmission system. 3. The master station divides display data to be transmitted to the slave station, inserts the display data between the upper address data and the lower address data, and transmits the display data. The elevator control transmission system according to claim 1, wherein the display is output when the display data becomes one display data. 4. The slave station, when the display data cannot be correctly received, is notified to a master station, and the master station retransmits the display data that the slave station could not correctly receive. 3. The elevator control transmission system according to claim 2, wherein: 5. The elevator control transmission system according to claim 1, wherein the master station changes a cyclic transmission cycle to be transmitted to the slave station according to a maximum transmission address value. 6. The slave station receives a frequency-divided signal from the master station for each transmission cycle, and indicates that the slave station is operating normally based on the frequency-divided signal. The elevator control transmission system according to claim 5, wherein