JPS5936283B2 - Input/output control method - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an input/output control method, more specifically, a plurality of input/output devices having intelligence, and a method that connects these input/output devices with a transmission line in a fixed order according to a job program. The present invention relates to an input/output control method for a main controller in a system including a main controller that controls the input/output devices described above.

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. In view of the above-mentioned circumstances, this invention makes it possible to increase line efficiency and job execution speed by performing line control corresponding to the execution program of the main controller, and to greatly simplify the control of parallel processing of input/output devices. This provides an input/output control method that can be used.

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 includes 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 that prints necessary information such as transaction date, payment amount, and balance on journals and slips, and issues slips? 2. A bill dispensing machine 73 that counts the number of bills to be paid, temporarily holds them, and releases them; a numeric keypad for inputting numerical information such as a password and payment amount; a confirmation key and other keys; a password and payment request; A customer service panel equipped with a numeric display that displays the amount, etc., and an operation procedure display that guides the customer's operations, etc., and its control section 74, as well as settings for the power switch, handling, cancellation switch, test mode, etc. It is equipped with input/output devices such as a monitor panel provided with a timer or switch, a date setting device, and a display thereof, and a control section 75 thereof.
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 R3 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), (CASH) (FPNL) and (MP
NL) is attached. Each input/output device 61, 62, 63
RAM66, S-CP that stores various necessary data
It is equipped with a ROM 6r storing an execution program of U65 and an interface 68 for data transmission with the main controller 50. The main controller 50 controls the input/output devices 71 to 74 according to the job program and other input/output devices 75, 76, and also controls communication with the center.
) 51, a RAM 52 that stores necessary data, and a ROM that stores a job program consisting of job instructions.
53, a ROM 54 storing a job program decoding program, a job program counter 55, an interface 56 that controls data transmission between each input/output device 61 to 63, and an interface 57 that controls communication with the center. and an interface 58 that controls data transmission to and from the remote monitor 76.

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
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 data from the main controller 50 to each input/output device, it indicates the destination input/output device, and vice versa. In case of transmission, indicate the input/output device of the transmission source. Commands include input/output commands (IOPT) and standby commands (WAIT) as described later.
)and so on.

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 RR7 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. A message accompanying data in contrast to an RR frame is assumed to be an I 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 in the center transmission 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 has a second
Similar to the frame format shown, storage locations are provided for start flags, addresses, commands, data, check bits and end flags. In addition, the RAM 52 is provided with a processing table (TM) for each input/output device, and this processing table (TM) includes a storage location T1 used as a scan registration flag and a storage location T1 for each input/output device. A storage location T2 for the address of the output device and a location T3 for storing the start address of a subroutine program specific to each input/output device are provided. The 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 the 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 data transmission to the main controller 50 is permitted only during this scan. This scanning by the main controller 50 is performed only on the registered monitor panel control section 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 reset (step 1), the monitor panel control section 75 of the table (TM) and the remote. The flag in the memory location T1 of the monitor 76 is set to 1 and registered. 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 input/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 is keyed in (Step 6)
), if the amount to be paid 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 checks whether the payment is authorized by checking the downstream message from the center (step 10). For example, if the billed amount is higher than the balance, payment is impossible, and the card is returned and the process is completed (step 5). If payment is possible, the banknote ejection machine 73,
Processing for the slip issuing machine 72 and card reader 71 is executed in parallel. The banknote dispensing machine 73 is commanded to count and temporarily hold the banknotes of the amount to be paid, the slip issuing machine 72 is commanded to print a slip, and the card reader 71 is commanded to record a card. (Step 11~
13), and when these are completed, the card is returned (step 14), and the temporarily held banknotes and slips are released (
Step 15), the process ends. Steps 2 and 3 of the job program are processing for the card reader 71, and while this processing is being executed, the line between the main controller 50 and the input/output equipment is used to transmit data only to the card reader 71. will be carried out.

Referring to FIG. 6, job command 1 for step 2
One is the instruction 0PT, address CARD, and control data IN.
(Card insertion reading), and the message edited by the decoding program described later is the card
When the data is transmitted to the reader 71, the card reader 71 starts a card insertion detection operation and sends the RR frame message to the main controller 5 for confirmation of reception of this I frame message.
Send to 0. When the M-CPU 5l receives this RR frame message, it then sends the RR frame message to the card reader 71, which is an edited job instruction consisting of a command WAIT and an address CARD.

If no card is inserted, the card reader 71 sends an RR frame 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 the same way in step 3, the instruction 10PT1 address (CARD) and control code RE
Since the I-frame message in which the AD (card data reading) job command has been edited is transmitted to the card reader 71,
The card reader 71 starts reading the contents of the card and sends an RR frame message to the main controller 50 for confirmation. In this way, the M-
When the CPU 5l is executing steps 2 and 3 of the job program, line control between the main controller 50 and the input/output equipment is also performed with the card reader 71, which is the input/output equipment corresponding to the processing of steps 2 and 3. Send and receive data between the two. The job commands in steps 6 and 7 are for the customer service panel control unit 74 and contain the address (KEY) of the first numeric key, so the job commands in steps 6 and 7 are
During execution of step 7, the main controller 50 sends and receives data only to the customer service panel control section 74. Step 11-1
Similarly, in No. 5, line control between the corresponding input/output devices 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 whether the instruction is 0PT or WA
Check whether it is IT (steps 21 and 31). If it is not one of the commands, processing moves to other commands. In the case of instruction 10PT, the address and control code in the job instruction are used to edit the transmission data in area M2 of the RAM 52 (step 22), and this transmission data is transferred to the DMA.
Transfer (step 23). Then, it is checked whether any response is returned from the designated input/output device (Step 24). A monitoring timer is started when control data is sent from the main control device 50, and if there is no response even after the set time of this timer is exceeded, it is determined as an error and the process moves to error processing (not shown). When a response is received from the specified input/output device, it is checked whether it is an RR frame message (step 25), and if it is not an RR frame, the message contains some data. Processing is performed on the data (step 26). For example, when card data is sent from card reader r1, processing such as writing the card data to area M5 is executed. R.R.
In the case of a frame, it is just a confirmation message and does not contain any data, so the process moves to step 27 without executing the process of step 26, and the contents of the job program counter 55 are incremented by 1 and this counter is incremented. Update. After the processing in step 26 is completed, the contents of the job program counter 55 are incremented by 1 (step 2).
7). After this, return to step 20 and count the counter 5.
The job command specified by the contents of 5 is read out and the same process is repeated. In the same way for the instruction WAIT, edit the RR frame in area M2 (step 3).
2) The edited contents are transferred to the input/output device by DMA (step 33).

If there is a response from the designated input/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 processing in steps 40 to 47 is processing for the monitor panel control unit 74 and remote monitor 76, and is executed in conjunction with data transmission processing with other input/output devices 71 to 74, R to devices 71-74
Sends the R7 frame telegram 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 processing for each input/output device in the table (TM) is completed. Table (TM) based on the address indicated by this counter
(step 41), and check whether the scan registration flag of the searched storage location T1 is set to 1 (step 41).
Step 42). If this flag is 0, step 40
The process moves to step 41 to check 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)) and the process returns to step 20. If the flag is 1, the address of the corresponding memory location T2 is read out, the RR frame is edited in the memory area M2 of the RAM 52 (step 43), and the D
The MA is transferred (step 44). Input/output devices 71 to 74
The flag is 0, and the flags of the monitor panel control ml section 75 and the remote monitor 76 are set to 1, so first, the R containing the address of the monitor panel control section 75 is set.
An R frame message is sent. 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. Monitor panel control section 75 and remote monitor 7
Reference numeral 6 monitors and controls the operating state of the cash dispensing machine, and as mentioned above, various switches, setting devices, etc. are provided. If there is a change in the status of such a switch, setting device, etc., the monitor panel control section 75 and remote monitor 76 will change the state of the switch when they receive the RR frame telegram from the main control device 50 (step 44). , and responds to the main controller 50 by creating a message to the effect that there has been a change in the status of the setting device or the like. 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 the storage location T3 (step 47). When the process of step 47 is completed, the process returns to step 20. Then, when the answer is YES again in step 35, the process proceeds to steps 40 to 47. In this way, the main controller 50 and the monitor panel controller 75
Data transmission between the main control device 50 and the other input/output devices 71 to 74 is performed when an RR frame message is sent and received during communication between the main control device 50 and the other input/output devices 71 to 74. This makes it possible to input interrupt factors for the monitor panel control section 75 and remote monitor 76 to the main controller 50 without setting job programs for the monitor panel control section 75 and remote monitor 76. be. FIG. 7 shows the case of communication with the monitor panel control section 75 and the remote monitor 76 during processing in step 15 of the job program.

Instruction 10 PT1 address CASHl 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 program counter 55 (
Step 27), next job instruction 10PT1 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 WAITl address CASH, so it is edited and sent (step 33), and when the RR frame message sent from the banknote ejector 73 is received (step 35).
, proceed to step 41.

Then, the command WAIT, address MPNLf) is sent (step 44), and when there is a response from the monitor panel control unit 75 with the RR frame telegram (step 46), the next command is WAIT, address RMCf) R
An R frame message is sent (step 44). Similarly, when there is an RR frame response from the remote monitor 76 (step 46), the process returns to step 40, but since the search has ended, the process moves to step 20. And job command W
Sends a message with AITl address JNL (step 33)
), when there is a response in the form of an RR frame message from the slip issuing machine 72, the process returns to step 41, where the monitor panel control unit 75 and remote monitor 76 are adjusted. 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. Then, it sends out the job command WAIT and the message of address CASH again (step 33), and if there is a response from the banknote dispensing machine 73 that the banknote dispensing is completed, the process for that is executed (
Step 36). In the same way, send R to the slip issuing machine 72.
If there is a response indicating completion of slip release when the R frame message is sent, all processing ends. Note that the transition from step 35 to step 41 in FIG. 5 is not limited to the process of step 15. In the process of step 2 shown in FIG. 6 as well as in other processes, when the RR frame message is sent and the RR frame message is returned, the process moves to step 41, and the monitor panel control section 75,
A search for remote monitor 76 is performed. Figure 8 shows one system controller (called SC) 9
0 is used to control a plurality of cash dispensing machines 70 and cash deposit machines 80.

The cash dispensing machine 70 is the same as the one shown in FIG. 1, and the cash deposit machine 80 includes a passbook reader 81 that reads or writes the contents of the magnetic stripe affixed to a passbook, and a passbook reader 81 that determines the authenticity of inserted banknotes. A bill validating device 82 and the like are provided. Each of these input/output devices is also controlled by an S-CPU (not shown) and constitutes an input/output device unit. In addition, the SC90 has a ROM job program for data that stores an M-CPU, a job program, and a job program decoding program.
It is equipped with a counter, an interface for communication control, etc. It goes without saying that the present invention is applicable to such systems as well. As explained in detail above, in this invention, a job program consisting of job instructions and its decoding program are stored in the memory in the main controller. are pre-stored.

Job instructions include those for controlling input/output devices, and
There are also those for other processing. Job instructions for controlling input/output devices include input/output instructions for causing the input/output devices to perform predetermined operations, and standby instructions for synchronization. Each of these job instructions includes the address of the input/output device to be controlled by that instruction. Job instructions for controlling input/output devices are arranged in the job program in the order in which the input/output devices are to be controlled. Furthermore, regarding the same input/output device control, the standby command is arranged after the input/output command. Then, it is controlled as follows by the decoding program. Job instructions of the job program are read out one by one. When the read job command is related to control of an input/output device, a message corresponding to the job command is edited and sent to the corresponding input/output device. Since the job command includes the address of the input/output device, it is possible to easily edit the message. Further, since the job commands are arranged in accordance with the control order of the input/output devices, the input/output devices are controlled in accordance with this order. Regarding the same input/output device control, the input/output command is arranged first, and its standby command is arranged after that.

Therefore, first, an input/output command is given to a certain input/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. Therefore, when executing one job command, data is exchanged only with the input/output device corresponding to that command, and the execution of a job command and the communication with the input/output device related to that command are It becomes possible to synchronize. In this way, line efficiency and job execution speed can be increased.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the general configuration of the cash dispensing machine;
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. rl~74...
...Input/output equipment.

Claims (1)

[Claims] 1. In a system that consists of multiple input/output devices and a main control device that controls them, and the input/output devices and the main control device are connected by a serial transmission line, job instructions are stored in the memory of the main control device. A job program and its decoding program are stored in advance.
Job instructions for controlling input/output devices include input/output instructions for causing the input/output devices to perform predetermined operations, and standby instructions for synchronization. Therefore, the address of each input/output device to be controlled is included, and the job instructions for controlling the input/output devices are arranged in the job program in the order in which the input/output devices are to be controlled. In addition, regarding the same input/output device control, the standby instruction is arranged after the input/output instruction, and the decoding program reads out the job instructions of the job program one instruction at a time, and the read job instructions are used as the input/output instructions. When the message is related to the control of an output device, a message corresponding to the job instruction is edited and sent to the corresponding input/output device, and if a message corresponding to a standby instruction is sent, the message is sent from the corresponding input/output device. An input/output control method that controls the reading of the next job command after a response containing substantial data is received.