KR100241552B1 - Printer error check method of ecr - Google Patents

Abstract

The present invention relates to a printer error checking method of a cash register, and an object of the present invention is to provide a printer error checking method of a cash register which checks an error state of a printer by setting a transmission / reception data check mode of a printer.

A printer error checking method of a cash register according to the present invention comprises the steps of: setting a transmission / reception data check mode at an input of the cash register, the cash register having a printer having an error checking function of received data; Judging whether the transmission data check switch is closed and setting the transmission data check flag if it is closed; Judging whether the received data check switch is closed and setting the received data check flag if it is closed; If only the transmission data check flag is set, transmitting fixed data to the terminal by the printer, receiving data retransmitted at the terminal, and comparing the received data with the transmitted data to print different data; And if the received data check flag is set, retransmitting the data transmitted from the terminal to the terminal by the printer and comparing the data transmitted from the terminal and the retransmitted data to determine whether there is different data. Characterized in that made.

Description

How to check the printer error of the cash register

The present invention relates to a printer error checking method of a cash register, and more particularly, to a printer error checking method of a cash register for checking an error state of a printer by setting a transmission / reception data check mode of a printer.

In general, a cash register is a device that processes various data accompanying product sales and informs users of results so that information management can be smoothly managed. It ranges from point of sales system to comprehensively manage the distribution economy. Hereinafter, in the present specification, the term ECR (Electronic Cash Register), which means an electronic cash register controlled by a microprocessor, is used as a broad concept including a low-end cash register to a POS terminal.

As described above, the cash register includes a printer for issuing a customer receipt and various processing results in a document. As is well known, the cash register printer includes a roll printer, a slip printer, a terminal printer, and the like.

1 is a system block diagram showing a general cash register and a printer. As shown in this figure, a general ECR system includes a display unit for displaying various information related to a transaction under the control of a key input unit 11 and a central processing unit 14 for generating various key codes for mode designation and money registration ( 12), the drawer drive unit 13 which draws out the cash storage drawer when there is a predetermined key operation, and kiss-scans the key input unit 11, specifies the mode of the ECR according to the received key code, and various functions in the designated mode. Central processing unit 14 for performing the operation, RAM 15 that stores a variety of data, including deposit and withdrawal history, ROM 16 in which the system operation program is embedded, power supply unit 17 for supplying power to the whole system, printer Under the control of the interface 18 and the central processing unit 14, a printer 20 for issuing documents for customer receipts and various processing results is provided.

In the above configuration, the printer has an error checking function of the received data.

However, conventionally, the error checking function of the received data is provided only by the printer itself, and only an error message is sent to the sender when an error occurs. Therefore, the sender performs various physical or vague checks to check the contents of the error. This wastes a lot of time, and there is a problem in that it is not possible to determine whether the problem is on the sender side or the receiver side.

An object of the present invention is to provide a printer error checking method of a cash register which checks an error state of a printer by setting a transmission / reception data check mode of a printer.

The printer error check method of the cash register of the present invention for achieving the above object is a cash register having a printer having an error check function of the received data, the cash register checks the transmission / reception data check mode to the input unit of the cash register; Setting up; Judging whether the transmission data check switch is closed and setting the transmission data check flag if it is closed; Judging whether the received data check switch is closed and setting the received data check flag if it is closed; If only the transmission data check flag is set, transmitting fixed data to the terminal by the printer, receiving data retransmitted at the terminal, and comparing the received data with the transmitted data to print different data; And if the received data check flag is set, retransmitting the data transmitted from the terminal to the terminal by the printer and comparing the data transmitted from the terminal and the retransmitted data to determine whether there is different data. Characterized in that made.

1 is a system block diagram showing a general cash register and a printer;

2 is a system block diagram showing a cash register and a printer according to the printer error checking method of the present invention;

3 is an explanatory diagram showing an example of a data format of a dip switch applied to a printer error checking method of a cash register of the present invention;

4 is a flowchart for explaining a printer error checking method of the cash register of the present invention.

*** Explanation of symbols for main parts of drawings *

Cash register, Key Input,

12. Display unit, 13. Drawer drive,

Central processing unit; lamb,

Romans, 17. Power Supply,

18. Printer interface, 20. printer,

21.Micom, 22. LED,

23.ECR interface section 24. switch,

25. Program memory, 26. Data memory

Hereinafter, a printer error checking method of a cash register according to a preferred embodiment will be described in detail with reference to the accompanying drawings.

2 is a system block diagram showing a cash register and a printer according to the printer error checking method of the present invention. As shown in this figure, the cash register according to the present invention is similar in configuration and operation to the cash register of FIG.

The printer 20 includes an ECR 21, a light emitting diode (LED) 22, an ECR interface unit 23, a switch 24, a program memory 25 and a data memory 26. It receives the function code and data from the ECR 10 through the interface unit 23 and prints the transaction details and report contents.

In FIG. 2, the LED 22 indicates the printer operation status and informs of an error occurrence, the switch 24 sets various operation modes of the printer, and the program memory 25 stores the operation of the printer according to the present invention. The program is saved. The data memory 26 stores various data updated at the time of a transaction.

3 is an explanatory diagram showing an example of a data format of a dip switch applied to the printer error checking method of the cash register of the present invention. The dip switch is a kind of a changeover switch and sets a change or function of an operation mode, for example, a data transmission speed, a data processing speed, handshaking, a transmission / reception data check mode, and the like. In general, a dip switch includes a pin that fixes a dip to a substrate, which is a CPU functional input / output line. As shown in this figure, a dual in-line package (DIP) switch is composed of N switches, and each switch is provided with a respective function. That is, if switch 1 is ON, the data reception error is ignored and the corresponding flag is set. Switch 2 is a switch for setting handshaking (initial order). The n-1 switch is a transmit data check mode, and the n switch is a receive data check mode.

4 is a flowchart for explaining a printer error checking method of the cash register of the present invention. As shown in this figure, first, when power is supplied to the cash register 10 and the printer 20 in step S100, the cash register initializes the system while executing the program stored in the ROM 16. In step S102, the state of the dip switches for setting the function selection of the printer 20 is checked in sequence, and in step S104, functions corresponding to each switch, for example, a data reception error and handshaking Set the flag according to the checked state from 1 to n-2 switch. In step S106, it is determined whether the n-1 switch is on. If it is determined that the switch in step S106 is not on, the flow advances to step S108 to determine whether the n switch is on. If the n switch is not turned on in step S108, since all of the transmission / reception data check flags are off, no data check is required, and thus the data reception is normally performed and the received data is printed. If the n switch is turned on in step S108, the flow advances to step S109 to set the received data flag, and then proceeds to step S120.

If it is determined in step S106 that the n-1 switch is on, the process proceeds to step S110 to set the transmission data check flag, and the process proceeds to step S112 to determine whether the n switch is on. If the switch is turned on in step S112, since both the transmission data check and the reception data check flag are set, the transmission data check and the reception data check cannot be performed at once. / Clear the receive data check flag. At this time, it can be notified by using the LED as an error processing, and can also generate a buzzer sound. If the n switch is not turned on as a result of the determination of step S112, step S120 is reached.

In step S120, it is determined whether the transmission data check flag is set. If the flag is not set as a result of the determination in step S120, the process proceeds to step S122 to receive data (that is, receive). In step S124, it is determined whether the data reception in step S122 is completed. If reception of all data has been completed in step S124, the flow advances to step S126 to determine whether the received data check flag is set. If the determination result flag of step S126 is not set, it means that both the transmission / reception data check flags are off, that is, no transmission or reception data check is performed, and the flow proceeds to step S132 to receive and receive data normally. The printed data is printed and the process proceeds to step S134 to process other operations. If the reception data check flag is set as a result of the determination in step S126, it means to check whether there is an error on the printer side, and the flow proceeds to step S128 to retransmit the data received by the printer to the terminal side. In step S130, it is determined whether the data transmission in step S128 is completed. At this time, the terminal side compares its own transmission data with the data retransmitted by the printer and determines whether there is an error data.

If the transmission data check flag is set in step S120, it means to check whether there is an error on the terminal side, and the flow proceeds to step S140 to transmit the fixed data, for example, an ASCII code, from the printer to the terminal side. In step S142, it is determined whether the transmission is completed, and when the transmission is completed, the flow proceeds to step S144 to receive (ie, receive) data retransmitted by the terminal. In step S146, it is determined whether the data reception of step S144 is completed. If the reception of the data is completed as a result of the determination in step S146, the flow advances to step S148 to compare the received data with the ASCII code. In the next step S150, different data are printed as a result of the comparison in step S148.

The printer error checking method of the cash register of the present invention is not limited to the above-described embodiments, and can be modified in various ways within the range permitted by the technical idea of the present invention.

According to the printer error check method of the cash register of the present invention as described above, by setting the transmission / reception data check mode of the printer to check the error state of the printer has the effect of finding the error quickly and accurately in the printer.

Claims (3)

In a cash register with a printer having an error checking function of received data, Setting a transmission / reception data check mode to an input of the cash register; Judging whether the transmission data check switch is closed and setting the transmission data check flag if it is closed; Judging whether the received data check switch is closed and setting the received data check flag if it is closed; If only the transmission data check flag is set, transmitting fixed data to the terminal by the printer, receiving data retransmitted at the terminal, and comparing the received data with the transmitted data to print different data; And If only the received data check flag is set, retransmitting the data transmitted from the terminal to the terminal in the printer and comparing the data transmitted from the terminal and the retransmitted data to determine whether there is different data; A printing error check method for a cash register, characterized in that made. 2. The print error check of the cash register according to claim 1, wherein when both the transmission data check flag and the reception data check flag are not set, the data transmitted from the terminal side is normally received and the received data is printed. Way. The method of claim 1, wherein an error process is performed when both the received data check flag and the transmitted data check flag are set.

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