JPH03144319A - Controlling transmission method for electronic rate balance - Google Patents

Abstract

PURPOSE:To specify exactly a commodity file for alteration of a unit price and collection of data by receiving the data on a commodity number only when the commodity number and a commodity name in commodity files of a master machine and an electronic rate balance are in accord with each other. CONSTITUTION:When a unit price in a satellite machine 3 is altered from the side of a master machine 2, an instruction on alteration of the unit price is transmitted from the master machine 2, and the satellite machine 3 receives it and also receives a commodity file number PLU specified by the master machine 2. As for a commodity name specified by the master machine 2, all numbers of characters of the commodity name are added up and transmitted as a check sum of the commodity name. This check sum of the commodity name is received by the satellite machine 3, and only when the number PLU and the check sum of the commodity name are in accord with each other, the unit price in the satellite machine 3 is altered on the basis of the instruction from the master machine 2. Thereby a commodity file for alteration of the unit price and collection of data can be specified exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in supermarkets, department stores, etc. to handle electronic billing as a master machine and a plurality of satellite machines each having a product file, that is, a so-called PLU memory. The present invention relates to a transmission control method for an electronic fare scale in an electronic fare scale system that is used by connecting the scale in-line by wire or wirelessly.

Conventional technology Conventionally, in an electronic fare scale system in which a master machine and multiple satellite machines, each having a PLU memory, are connected in-line by wire or wirelessly, when changing unit prices or collecting data, the PLU is used. In order to identify the relevant location in the memory, the P L tJ number is used as a reference and the numbers match.

Problems to be Solved by the Invention In this type of electronic fare scale system, a particular electronic fare scale used as a satellite machine may independently change the contents of the PLU due to the peculiarities of the sales floor.

That is, since there is a shortage of PLU numbers, the product name of another product may be set using the same PLU number as another satellite machine.

In such a case, if you change the unit price based on a command from the master machine or collect data based only on the matching of the PLU numbers, you will be able to change the unit price or change the unit price for items for which different product names have actually been entered manually. You will end up collecting data.

Means for Solving the Problems: An electronic fare scale in which a master machine and an electronic fare scale are connected in-line, each having a product file storing product information for each product number, and data such as price changes are sent and received from the master machine. In the system, when data is transmitted from the master machine or when data is transmitted from the electronic fare scale, when both the product number and product name of the product files of the master machine and the electronic fare scale match. When the transmitted product number data is received and the product number and product name in the product file do not match, an error signal is generated.

Therefore, since the product number and product name match, it is possible to accurately identify the relevant part of the product file for unit price changes and data collection, and also to identify the part where only the product number matches. Since this generates an error signal, it is possible to accurately know the usage status of the product fragrance.

Example Embodiments of the present invention will be described based on the drawings.

First, the electronic toll accounting system 1 consists of a master machine 2, which is a number of cash registers and electronic toll scales, and a plurality of satellite machines 3, which are electronic toll scales.
and the satellite machine 3 are connected inline by wire or wirelessly.

These master machine 2 and satellite machine 3 are connected via interface 4 to a computer equipped with ROM and RAM.
I] U 5. 20 CPU5 has power supply 6
are connected, and the display 7 is also connected.

Although not shown in the RAM of the CPU 5, there is a PLU (Price Look Up) memory area which is a product file, and is divided by PLU number which is a product number, and product name and unit price are set in advance. .

In such a configuration, when a product sales operation is performed, various registration operations are performed by calling up the unit price using the PLU number in each satellite machine 3.

Then, on the satellite machine 3 side, the contents of the PLU may be changed independently depending on the special characteristics of the sales floor.

In other words, if the PLU memory capacity is large,
You can use your own PLtJ number, but
The capacity of the LLI memory is limited and the PLU number is insufficient, so it is the same as other satellite machines 3.
The product name of another product may be set using the LU number. For example, if the product name of the PLU number of rloOJ number of master machine 2 is [for beef loin steak],
In the specific satellite aircraft 3, its r 1. There are cases where the product name of the PLU number of OO4 is changed to "Beef for Sukaki" and the unit price is set. Therefore, in systems connected inline with each other, the same PLU
Even if it is a number, different data may be given depending on the satellite device 3.

A case in which the unit price of each satellite machine 3 is changed from the master machine 2 will be explained. First, when a command to change the unit price is sent from the master machine 2, each satellite machine 3 receives the command to change the unit price, and also receives the I) LU number specified by the master machine 2. Further, for the product name specified by the master device 2, in order to shorten the transmission time, the sum of all the letter numbers of the product name is sent as the checksum of the product name. When the checksum of this product name is received by the satellite machine 3, a check is made to see if it is the checksum of the product name of the PLU number of the satellite machine 3.

Therefore, when both the PLO number and the product name checksum match, the unit price of the satellite machine 3 with which the match matches is changed based on a command from the master machine 2.

On the other hand, if the product name checksums for the P L and U numbers do not match, that is, if only the FLU number matches, the PLU number is determined to be an error and is transmitted from the satellite device 3 to the master device 2. Therefore, the satellite machine 3 that is not managed by that PLU number
It becomes clear that exists.

Such an operation is exactly the same when the master machine 2 collects data such as payment of the satellite machine 3.

EFFECTS OF THE INVENTION As described above, the master machine and the electronic price scale are connected in-line, each of which has a product file containing product information for each product number, and changes such as price changes can be made from the master machine. In an electronic toll scale system that transmits and receives data, when transmitting data from the master machine or when transmitting data from the electronic toll scale, the product number and product name of the product file between the master machine and the electric toll scale are When both match, the sent product number data is received, and when both the product fragrance S) and the product name of the product file do not match, an error signal is generated. Therefore, by checking the match between the product number and the product name, it is possible to accurately identify the relevant part of the product file for changing unit prices or collecting data. Since this generates an error signal, it has the effect of accurately determining the usage status of the product fragrance.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram of the system, FIG. 2 is an internal block diagram, and FIG. 3 is a flowchart. 2... Master machine, 3... Electronic fare scale applicant
Tokyo Electric Co., Ltd.

Claims (1)

[Claims] In an electronic toll scale system in which a master machine and an electronic toll scale each having a product file in which product information is stored for each product number are connected inline, and data such as charge changes is transmitted and received from the master machine, or when transmitting data from the electronic toll scale, when both the product number and the product name in the product files of the master machine and the electronic toll scale match, the transmitted product number 1. A transmission control method for an electronic fare scale, characterized in that an error signal is generated when a product number and a product name of the product file do not match.