JPS5936284B2 - Input/output control method - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an input/output control method, more specifically, a plurality of input/output devices with intelligence, and a main control that is connected to these input/output devices by a transmission line and controls these input/output devices. The present invention relates to an input/output control method for a main controller in a system comprising devices.

In such systems, line control between the main controller and each input/output device was previously performed completely unrelated to the main controller's job program (asynchronously); This method has the disadvantage that data transmission cannot be performed only with the input/output devices necessary for job execution, and line efficiency and job execution speed cannot be sufficiently increased.

Therefore, it is possible to improve line efficiency and job execution speed by performing line control that corresponds to the execution program of the main controller, but in this case, it is possible to increase the line efficiency and job execution speed, but this would result in the connection between human output devices that are unrelated to the series of processing executed by the main controller. It becomes difficult to exchange data between the two. This invention provides a method for transmitting and receiving zeta only to input/output devices controlled by instructions for each step of the main controller's job program. The present invention provides an input/output control method that enables data communication with input/output devices unrelated to a series of processing by the device.

The present invention will be described in detail below with reference to the drawings when applied to an automatic cash dispensing machine.

FIG. 1 shows the configuration of an automatic cash dispensing machine. As is well known, a cash dispensing machine is equipped with a card reader 71 that reads the contents of a card on which account numbers and the like are magnetically recorded.
A slip issuing machine 72 that prints necessary information such as transaction date, payment amount, and balance on a journal and slip and issues the slip; a bill discharging machine that counts the number of bills to be paid, temporarily holds it, and then releases it. 73. A numeric keypad for inputting numerical information such as a PIN number and the amount to be paid, a confirmation key and other keys, a numeric display that displays the PIN number, the amount to be paid, etc., and an operation procedure display that guides the customer to the operations to be performed. A customer service panel and its control unit 74, which are equipped with a power switch, a handling/cancellation switch, a test mode setting device or switch, a date setting device and a display device thereof, etc. It is equipped with input/output devices such as a control section 75.
In this embodiment, for convenience, the card reader 71 and the slip issuing machine 72 constitute one input/output device unit 61, the banknote ejection machine 73 constitutes the input/output device unit 62, and the customer service panel control section 74 and A monitor panel control section 75 constitutes an input/output device unit 63, each of which is controlled by a slave central processing unit (referred to as S-CPU) 65. However, the card reader 71, slip issuing machine 72, bill ejecting machine 73, customer service panel control unit 74
and the monitor panel control unit 75 are separate input/output devices, and each has a separate transmission address (CARD).
, (JNL), (CASII). (FPNL) and (MPNL) are attached. Each input/output device 61, 62
, 63 is a RAM 66, S which stores various necessary data.
-ROM 6 that stores the execution program of the CPU 65
7 and an interface 68 for data transmission with the main controller 50. The main controller 50 controls the input/output devices 71 to 74 and other input/output devices 75 and 76 according to the job program, and also controls communication with the center.
(referred to as CPU) 51. RAM5 to store necessary data
2, a ROM 53 storing a job program consisting of job instructions; ROM 54 storing the program decoding program, job program counter 55
, an interface 56 that controls data transmission with each of the input/output devices 61 to 63, an interface 57 that controls communication with the center, and an interface 58 that controls data transmission with the remote monitor 76. It consists of

Data transmission between the main control device 50 and the input/output devices 61 to 63 is a serial transmission method of four-wire signals of transmitting data and receiving data, and is controlled by DMA. Further, communication with the center is performed via a modem 59. The remote monitor 76 includes a set of switches similar to the monitor panel described above, and an S-CPU controlled by the M-CPU 5l.
etc. are provided. This remote monitor 76 is also positioned as one input/output device, and has an address (R
MC) is assigned. FIG. 2 shows the main controller 50
The frame format of control data transmitted and received between the input and output devices 71 to 76 is shown.

The control data consists of a start flag, input/output device addresses, commands, data, check bits, and termination flag. The start flag and end flag are synchronized and notify the beginning and end of a frame. The address always indicates the address of the input/output device, and when transmitting from the main controller 50 to each input/output device, it indicates the destination input/output device, and vice versa.
When transmitting data to 0, it indicates the input/output device of the transmission source. Commands include input/output instructions (IOPT) as described later.
), standby command (WAIT), etc.

The data includes readings (IN.RE) for each input/output device.
Indicates control codes such as AD), withdrawal (STOR), printing (PRNT), writing [WRIT], return or release (0UT), responses from input/output devices, abnormalities and errors in each input/output device, etc. Contains information, etc.

There are also messages that do not contain data, and these are called receive ready frames (referred to as RR frames). Instruction 10P
T causes each input/output device to perform a predetermined operation, and is accompanied by the above-mentioned control code. The command WAIT means to wait for a response, and is a message of an RR frame.
When each input/output device responds or sends data to the main control device 50, the data is sent in synchronization with the RR frame message from the main control device 50. One frame corresponds to a message accompanying data for an RR frame. The inspection bit is
It is used to check whether the contents of the frame have been transmitted correctly. Figure 3 shows the main controller 50.
3 shows a part of the configuration of the RAM 52 in the drawing.

Inside the RAM 52, there is an area M1 that stores received data used for communication with input/output devices, an area M2 that stores transmitted data, and a center transmitted data that stores uplink and downlink messages to and from the center.・Elijah M3
and a center reception data area M4 are provided, and furthermore, areas M5 to M8 are provided for respectively storing card data, a personal identification number, a billed amount, and slip print data necessary for cash transaction processing. When the card data, PIN number, and billing amount are sent from each input/output device as received data (area M1), these areas M5 to M
7 and added to the center transmission data during communication with the center. The slip print data is stored in the area M8 when sent from the center as center received data, and is used as control data for the slip issuing machine 72. The transmission data area M2 is provided with storage locations for a start flag, address, command, data, check bit and end flag, similar to the frame format shown in FIG. Further, the RAM 52 is provided with a processing table TM for each input/output device, and this processing table TM includes, for each input/output device, a storage location T1 used as a scan registration flag, and an address of each output device. There are provided a storage location T2 for storing a subroutine program specific to each input/output device, and a location T3 for storing a start address of a subroutine program specific to each input/output device. Other input/output devices other than the monitor panel control section 75 and the remote monitor 76 are controlled in a fixed order according to a job program, which will be described later. A specific control program for remote monitor 76 is not programmed. These monitor panel control unit 75 and remote monitor 76 are scanned incidentally when communicating with other input/output devices, and zeta transmission to the main controller 50 is permitted only during the scan. This main control device 50
Scanning is performed only on the registered monitor panel control unit 75 or remote monitor 76, and the presence or absence of registration is determined by the state of the flag in the storage location T1.
If this scan registration flag is 1, it is registered. For the input/output devices from the card reader 71 to the customer service panel control section 74, the storage location T3 stores the start addresses of subroutine programs such as abnormality processing for these input/output devices, and the monitor For the panel control unit 75 and the remote monitor 76, the memory location T3 contains the beginning of the subroutine program to be executed when a message other than the RR frame is returned when these input/output devices are scanned. Address is memorized. FIG. 4 shows an overview of the job program of the main controller 50.

For convenience, this program omits processing for the operation procedure display and numerical display of the customer service panel control section 74. Further, to the right of each step, a job instruction corresponding to that step is shown. At the time of initial resetting (step 1), the storage location T of the monitor panel control section 75 of the table TM and the remote monitor 76 is
Set the flag 1 to 1 and register. In addition, an RR frame message with a command WAIT is sent to all output devices to search for all output devices, and abnormalities, errors, etc. are investigated based on responses from each output device. When the initial state processing is completed, processing for the input/output device card/reader 71 is started. It is checked whether a card is inserted into the card reader 71 (step 2), and if the card is inserted, the card data is read (step 3). Then, it is checked whether the read card data is legitimate, for example, whether the bank code in the card data matches (step 4), and if the card is not legitimate, the card is returned and processed. Finish (Step 5). If it is legitimate, the process moves on to the customer service panel control section 74 next. The PIN number is keyed in (step 6),
When the payment request amount is input (step 7), these are imported. Then, send the account number, payment amount, etc. to the center (step 8), and if the center sends a corresponding message, receive this message (step 9), and check the downstream message from the center to authorize payment. Check whether it is set (Step 10). For example, if the amount requested for payment is higher than the balance, payment is impossible, so the card is returned and the process is completed (step 5). If payment is possible, processing for the banknote dispensing machine 73, slip issuing machine 72, and card reader 71 is executed in parallel. The bill dispensing machine 73 is instructed to count and temporarily hold the bills of the amount to be paid, and the bill issuing machine 7
2 to print the slip, and the card reader 71 to record the card (steps 11 to 1).
3) When these are completed, the card is returned (step 214), the temporarily held banknotes and slips are released (step 15), and the process is completed. Steps 2 and 3 of the job program are processing for the card reader 71, and while this processing is being executed, the two lines between the main controller 50 and the input/output equipment are connected to the card reader 71. Data transmission takes place only in

Referring to FIG. 6, job command 1 for step 2
One is instruction 10PT, address CARD, and control data I.
N (card insertion reading), and when a message with three job commands edited by the decoding program described later is transmitted to the card reader 71, the card reader 71
starts the card insertion detection operation and sends an RR frame message to the main controller 50 for confirmation of reception of this frame message. When the M-CPU 5l receives this RR frame message, it then sends the instruction WAIT and the address CARD.
An RR frame message containing edited job commands is sent to the card reader 71. If no card is inserted, the card reader 71 sends the RR frame 4 message to the M-CPU 5l again. Then, when the card is inserted and detected, an I-frame message indicating that the card insertion has been detected is sent to the main controller 50. This completes the process of step 2, and then moves on to step 3. In step 3, in the same way, instruction 10PT, address (C
ARD) and the control code READ (read card data) job command is transmitted to the card reader 71, so the card reader 71 starts reading the contents of the card and also confirms the contents. An RR frame message for this purpose is sent to the main controller 50. In this way, when the M-CPU 5l of the main controller 50 is executing steps 2 and 3 of the job program, the line control between the main controller 50 and the input/output equipment is also executed in steps 2 and 3.
Card reader 7, which is an input/output device that supports the processing in step 3.
1 and sends and receives data.

The job commands in steps 6 and 7 are for the customer service panel control unit 74, and the number one address (
KEY), the main controller 50 controls the customer service panel control section 74 during the execution of steps 6 and 7.
Send and receive data only with. Similarly, in steps 11 to 15, line control with the corresponding input/output device is executed in response to the commands of the job program. FIG. 5 shows a job program decoding program. The job instruction is read from the job program memory 53 (step 20) and the instruction is IOPT.
or WAIT (steps 21 and 3).
1). If it is not one of the commands, processing moves to other commands. In the case of instruction 0PT, the address and control code in the job instruction are used to store area M2 of the RAM 52.
The transmission data is edited (step 22), and this transmission data is transferred by DMA (step 23).

Then, it is checked whether any response is returned from the designated input/output device (step 24). Main control device 50
A monitoring timer is started when control data is sent from , and if there is no response even after the set time of this timer is exceeded, an error is handled as an error (not shown).
Move to. When a response is received from the specified input/output device, check whether it is an RR frame message (
In step 25), if the frame is not an RR frame, the message contains some data, so processing for that data is executed (step 26). For example, when card data is sent from the card reader 71, processing such as writing the card data into area M5 is executed. In the case of an RR frame, it is just a confirmation message and does not contain any data.
The program proceeds to step 27 without executing the process of step 26, and adds 1 to the contents of the job program counter 55.
and update this counter. After the processing in step 26 is completed, the job program counter 55 is similarly incremented by 1 (step 27). Thereafter, the process returns to step 20, reads out the job command specified by the contents of the counter 55, and repeats the same process. Command W
Similarly, in the case of AIT, the RR frame is edited in area M2 (step 32), and the edited contents are DMA-transferred to the input/output device (step 33).

If there is a response from the specified human output device (step 34), it is checked whether the received message is an RR frame (step 35), and if it is an RR frame, the process moves to step 41. If it is not an RR frame, step 2
The transmitted data is processed in the same way as in step 6 (step 36), and then the program counter 55
The content is incremented by +1 (step 37) and the process returns to step 20. The processes in steps 40 to 47 are processes for the monitor panel control unit 74 and remote monitor 76, and are executed in conjunction with the data transmission process with other input/output devices 71 to 74, and these input/output R to devices 71-74
Sends the R-frame message and connects these input/output devices 71 to
This is executed when an RR frame is transmitted from 74.

The main controller 50 is provided with a counter for searching the table TM, and this counter is updated after completion of processing for each input/output device in the table TM. The table TM is searched based on the address indicated by this counter (step 41), and it is checked whether the scan registration flag of the searched storage location T1 is set to 1 (step 42).
). If this flag is 0, the process moves to step 40, where it is checked whether the search for storage locations for all input/output devices has been completed, and if not, the process moves to step 41.
If the process has been completed, the contents of the counter described above are set to the initial value (the first address in the table TM) Vc, and the process returns to step 20. If the flag is 1, the address of the corresponding memory location T2 is read and the RR is stored in the memory area M2 of the RAM 52.
Edit the frame (step 43) and perform DMA transfer (
Step 44). Since the flags of the input/output devices 71 to 74 are O, and the flags of the monitor panel control unit 75 and the remote monitor 76 are set to 1, an RR frame message containing the address of the monitor panel control unit 75 is first sent. be done. Then, it is checked whether there is a response from the monitor panel control section 75 within a certain period of time (step 45), and if there is a response, it is determined whether or not it is an RR frame (step 46). If there is no response within a certain period of time, error processing (not shown) is executed. The monitor panel control section 75 and the remote monitor 76 monitor and control the operating state of the cash dispensing machine, and are provided with various switch setting devices as described above. If the status of such switches, setting devices, etc. changes,
When the monitor panel control unit 75 and remote monitor 76 receive the RR frame message from the main controller 50 (step 44), they create a message indicating that the status of a switch, setting device, etc. has changed, and send the message to the main controller. Responsive to controller 50. If there is no change in the status of switches, setting devices, etc., a response is sent with an RR frame message. If the response from the monitor panel control section 75 or the remote monitor 76 is an RR frame message, the main control device 50 moves to step 40, and if there is some response data other than an RR frame, the main control device 50 moves to step 40. The subroutine processing corresponding to the received data is executed by uploading to the address stored in T3 (step 47). When the process of step 47 is completed, the process returns to step 20. and,
When the answer to step 35 is YES again, proceed to step 40.
- 47 processing begins. In this way, data transmission between the main control device 50, the monitor panel control section 75, and the remote monitor 76 is performed using the RR frame during communication between the main control device 50 and other input/output devices 71 to 74. Executed when a message is sent or received. As a result, the monitor panel control section 75 and the remote monitor 7
It becomes possible to input the interrupt factors of the monitor panel control unit 75 and the remote monitor 76 to the main controller 50 without setting a job program for the main controller 6.
FIG. 7 shows the monitor panel control unit 75 and the remote controller during processing in step 15 of the job program.
This shows the case of communicating with the monitor 76.

Instruction 10 PT1 address CASH, control code 0UT (
When the job command telegram consisting of "bill discharge" is edited and transmitted (step 23), an RR frame telegram confirming receipt of this telegram is sent from the bill dispensing machine 73 (step 25). Add 1 to the contents of the program counter 55 (
Step 27), next job instruction 10PT, address J
NL, control code 0UT (slip release) is read out (step 20), edited and sent (step 23)
Since the RR frame message is sent from the slip issuing machine 72 (step 25), the program counter 55
Add 1 to the content of (step 27). The next job command is the command WALT and the address CASH, so it is edited and sent (step 33), and when the RR frame message sent from the banknote dispenser 73 is received (step 35).
, proceed to step 41.

Then, the command WAIT and the RR frame message with the address MPNL are sent (step 44), and the monitor panel control unit 7
When there is a response from 5 in the form of an RR frame message (step 46), the RR frame message with the command WAIT and address RMC is sent out (step 44). Similarly, when there is an RR frame response from the remote monitor 76 (
At step 46), the process returns to step 40, but since the search has ended, the process moves to step 20. And job command WAI
T, sends a message with address JNL (step 33),
When there is a response from the slip issuing machine 72 in the form of an RR frame message, the process moves to step 41 again, and the monitor panel control unit 75
and queries the remote monitor 76.
When the search is completed, or when some data is transmitted from the monitor panel control section 75 or the remote monitor 76 and the processing thereof is completed, the process returns to step 20. and,
The job command WAIT and the message CASH are sent out again (step 33), and if there is a response from the banknote dispensing machine 73 indicating completion of banknote dispensing, processing is executed in response to the response (step 36). Similarly, when the RR frame message is sent to the slip issuing machine 72, if there is a response indicating completion of slip release, all processing ends. Note that step 3 in Figure 5
The transition from Step 5 to Step 41 is not limited to the processing of Step 15. In the process of step 2 shown in FIG. 6 as well as in other processes, when an RR frame message is sent and an RR frame message is returned, the process moves to step 41, and the monitor panel control unit 75, remote monitor 76 A search for is executed. FIG. 8 shows a case where a plurality of cash dispensing machines 70 and cash deposit machines 80 are controlled by one system controller (referred to as SC) 90.

The cash dispensing machine 70 is the same as that shown in FIG. 1, and the cash deposit machine 80 includes a passbook reader 81 for reading or writing the contents of the magnetic stripe affixed to the passbook. A bill validating device 82 for determining the authenticity of inserted bills is provided. These individual output devices are also controlled by an S-CPU (not shown) and constitute an input/output device unit. Further, the SC90 is equipped with a ROM storing an M-CPU job program and a job program decoding program, a RAM for data, a job program counter, an interface for communication control, and the like. It goes without saying that the present invention is also applicable to such a system. As explained in detail above, the present invention includes, among a plurality of input/output devices, some specific input/output devices that are controlled in a fixed order according to the job program of the main controller, and other input/output devices. This is applied to systems that include output devices. In order to control communication with a specific input/output device in synchronization with a job command, a job instruction for controlling a specific input/output device in a job program includes a command to make the specific input/output device perform a predetermined operation. There are input/output instructions and standby instructions for synchronization. Regarding the same specific input/output device control, the standby command is arranged after the input/output command. Each of these instructions also includes the address of a specific input/output device to be controlled by the instruction. In order to communicate with other input/output devices, a processing table is provided in the main controller in which at least the presence or absence of registration of other input/output devices and their addresses are stored. The main controller is controlled to perform the following operations according to the job program decoding program.

First, if the read job command is an input/output command, a message related to the input/output command is sent to the corresponding specific input/output device and a response is awaited. When a response is received from the corresponding specific person output device to this input/output command, the next job command is read out after necessary processing according to the response. If the read job command is a standby command, a message related to the standby command is sent to the corresponding specific input/output device and a response is awaited.

If the response from the specific input/output device to the standby command does not include substantial data, the processing table is searched and an inquiry message is sent to other registered input/output devices.

As a result, the communication with the specified person output device is eliminated,
Furthermore, as part of the job program decoding program, it is possible to accept interrupt factors generated in other input/output devices. If the response from the specific input/output device regarding the standby command includes substantial data, processing is performed according to the response and the next job command is read. As mentioned above, in a job program, standby instructions are arranged after input/output instructions for controlling the same specific input/output equipment. Therefore, first, an input/output command is given to a certain human output device to perform a predetermined operation. Next, a standby command message is sent to the same input/output device. When this standby command message is transmitted, reading of the next job command is started only after a response containing substantial data is received from the corresponding input/output device. When executing one job command, data can be exchanged only with the specific input/output device corresponding to that command, and the execution of the job command and communication with the input/output device related to that command can be synchronized. It becomes possible to take

In this way, line efficiency and job execution speed can be increased.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the general configuration of the cash dispensing machine, Figure 2
The figure shows the frame format of the message sent and received between the main controller and input/output equipment, Figure 3 shows the configuration of the RAM of the main controller, and Figure 4 shows the flow diagram of the job program. Figure 5 is a flow chart showing the job program decoding program, Figures 6 and 7 are diagrams showing how data is sent and received between the main controller and input/output equipment, and Figure 8 is a system diagram. - It is a block diagram showing another example when a controller is used. 50... Main control device, 51... M-C
PU, 65...S-CPU, 71-76...
...Human output equipment, TM...Table.

Claims (1)

[Claims] 1. In a system consisting of multiple input/output devices and a main control device that controls them, where the input/output devices and the main control device are connected by a serial transmission line, the multiple input/output devices are connected to the main control device. It consists of several specific input/output devices and other input/output devices that are controlled in a fixed order according to the job program, and the job instructions for controlling the specific input/output devices in the job program are There are input/output commands for making a specific input/output device perform a predetermined operation, and standby instructions for synchronization.The standby command is arranged after the input/output command when controlling the same specific input/output device. At the same time, each of these commands includes the address of the specific input/output device to be controlled by the command, and the main control device stores at least the presence or absence of registration and the address of other input/output devices. There is an input/output control method in which the main controller performs the next operation according to the job program decoding program, and if the read job instruction is an input/output instruction, it sends a message related to the input/output instruction. Sends the command to the relevant specific input/output device and waits for its response.When there is a response from the relevant specific input/output device to the input/output command, the next job command is read after performing the necessary processing according to the response. If the read job command is a standby command, a message related to the standby command is sent to the corresponding specific input/output device and the response is waited for.Substantive data is included in the response from the corresponding specific input/output device to the standby command. If not, search the processing table and send an inquiry message to other registered input/output devices.If the response from the specific input/output device to the standby command contains substantial data, , performs processing according to the response and reads the next job command.