JP2000194951A - Pos system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a POS system capable of realizing systematic management in which a POS controller is related to kitchen equipment. SOLUTION: The POS system is provided with a POS register 11 to store sale management data like various commodity masters, food material masters and sales information, etc., and to perform ordering of commodities and adjustment work and a cold storage house 1 which is installed to perform cooling preservation of fool materials and linked with the POS register 11 by a signal line 22 and the cold storage house 1 is provided with a sensor to be connected with the signal line 22 and to transfer data with the POS register 11 and a switching element to control drive of equipment installed on the cold storage house 1 by the data from the POS register 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PO that is installed in, for example, a restaurant chain and manages sales of goods.
It relates to the S system.

[0002]

2. Description of the Related Art Conventionally, a restaurant chain store has set up a POS cash register as shown, for example, in Japanese Patent Publication No. 6-101071, and stores various types of master information to order goods (cooking, beverages, etc.) and settle accounts. Of sales management. In recent POS systems, information on ingredients according to product recipes is also stored, and the flow of goods and money in the entire store is managed.

On the other hand, a kitchen of a store is provided with a plurality of kitchen machines such as a cooling storage for freezing and refrigeration, a heating cooker, a dishwasher and the like, and performs cooling preservation of the above-mentioned ingredients, cooking, washing of dishes and the like. I have. Among them, for example, in a cooling storage, a compressor, a condenser, a cooler, etc. constituting a cooling device are built in, and a refrigerant discharged from the compressor is condensed by a condenser, decompressed by a decompression device, and then cooled. The cooling air is supplied to the cooler to exert a cooling effect, and the cool air cooled by the cooler is circulated in the refrigerator by a cooling fan to cool the cool air to a predetermined low temperature.

[0004]

As described above, various types of kitchen machines such as a POS cash register for managing sales of products, a cooling storage for cooling and storing ingredients for making products, a heating cooker, and a dishwasher are installed in the store. Although they have been installed, the actual situation is that cooperation management between them has not been performed conventionally.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problems, and has been developed for a POS cash register or the like.
An object of the present invention is to provide a POS system capable of implementing general management in which a controller and a kitchen machine are associated with each other.

[0006]

The POS system of the present invention has sales management data such as various product masters, food masters and sales information, and a POS controller for ordering products and performing payment operations. It has a kitchen machine installed for performing cooling and preservation and connected to a POS controller and a signal line.
A sensor connected to the signal line, and a switching element connected to the signal line and controlling operation of a device provided in the kitchen machine, wherein the sensor includes a detection element, and storage means having its own ID code. Transmitting / receiving means for transmitting / receiving data to / from the POS controller via a signal line, and sensor-side control means for receiving data detected by the detecting element and writing the data in the storing means, and transmitting the data in the storing means to the POS controller by the transmitting / receiving means A switching device, a storage device having its own ID code, a transmission / reception device for exchanging data with the POS controller via a signal line, and a switching device based on data from the transmission / reception device. And a switching element-side control means for controlling the means.

According to the present invention, sales management data such as various product masters, food masters, and sales information are held,
POS controller for ordering and settlement of goods and installed for cooling and preserving food
A kitchen machine connected to the OS controller by a signal line is provided, and the kitchen machine includes a sensor connected to the signal line,
A switching element connected to the signal line and controlling the operation of equipment provided in the kitchen machine; the sensor includes a detection element, storage means having its own ID code, and a POS through the signal line. A transmission / reception unit for exchanging data with the controller, a sensor-side control unit for receiving data detected by the detection element and writing the data in the storage unit, and transmitting the data in the storage unit to the POS controller by the transmission / reception unit; Are switching means, storage means having its own ID code, transmitting and receiving means for transmitting and receiving data to and from a POS controller via a signal line, and a switching element side for controlling the switching means based on data from the transmitting and receiving means. Control means, the sensor-side control means of the sensor of the kitchen machine There writes the detected data in the storage means, and transmits the data to the POS controller via the signal line by the transmitting and receiving means, POS controller can acquire data from sensors without hindrance kitchen machine.

Further, the switching element side control means of the switching element of the kitchen machine controls the switching means based on the data from the POS controller received by the transmission / reception means via the signal line. The control of the provided device can be executed.

As a result, a POS that manages the sale of merchandise
The controller can also control the operation control of the kitchen machine, and can realize comprehensive store management from the sales management of products to the cooling and preservation management of foodstuffs.

In this case, since the sensor and the switching element have their own ID code in the storage means,
By connecting the kitchen machine to the signal line, the POS controller can identify the sensor and the switching element, and the wiring between the sensor and the switching element is completed.

Thus, according to the present invention, it is possible to wire a kitchen machine by a so-called plug-in, and it is possible to significantly simplify the wiring. Further, since common software can be used for the POS controller irrespective of the number of kitchen machines, the cost can be significantly reduced by common use.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a POS system according to the present invention, FIG. 2 is a functional block diagram of a POS register 11, FIG. 3 is a sectional view of a cooling storage 1 as an embodiment of a kitchen machine, and FIG. It is.

In each of the figures, a POS cash register 11 constituting a POS controller is installed in a store in a restaurant chain, and performs ordering and settlement of goods (cooking and beverages) and a payment operation. Is a keyboard 102 having keys for various products as shown in FIG. 2, an operation display 103 for displaying a product name, a product price, a total price, etc. in response to a key operation, and a RAM card 1.
An insertion slot (not shown) for inserting the printer 13, a job selection mode key 105 used for changing a job, a receipt journal printer 106, and a cash drawer (not shown) are attached.

On the back of the operation display 103, there is provided a customer display 108 for displaying a product price, a total price, and the like to the customer.

The circuit configuration of the POS register 11 is shown in FIG.
Is shown in In the POS register 11, a CPU (Central Processing Unit) 109, a ROM 110, a readable and writable RAM 111, a FONT ROM 112 for the operation display 103, and a RAM card reader 113
A keyboard input circuit 114 connected to the keyboard 102; a printer control circuit 115 connected to the printer 106; an operation display control circuit 116 connected to the operation display 103; Vessel 1
08 and a VIDEO RA storing the data of the operation display 103.
M118, a mode key control circuit 119 connected to the mode key 105, a clock 120, an on-line communication control circuit 121 for communicating with an external device using a telephone line by a modem 122, And RS-42
Other POS cash register 11A with 2A in-line cable 42
And ordering receiver 130, kitchen printer 140
In-line communication control circuit 124 for performing communication
And a controller 36 comprising a bus I / O interface 99. These are connected by a data bus.

The bus I / O interface 99 is connected to a signal line 22 to be described later, and communicates with the temperature sensors 27 and switching elements 28 of the cooling storages 1A, 1B and 1C to be described later via the signal line 22. To give and receive. The ROM 110 stores another POS register 11A and the receiver 1
30, a communication protocol for communicating with the kitchen printer 140, the temperature sensor 27 and the switching element 2
A predetermined communication protocol for performing data communication with the communication device 8 and the like, and software for identifying the temperature sensor 27 and the switching element 28 are set.

The RAM 111 stores various product masters, food masters corresponding to the product recipes in the menu information and sales management data such as sales information in a file format, and the handy device 15 used by the hostess.
0, the order data transmitted to the receiver 130 is received, and sales management operations such as output to the kitchen printer 140 and sales registration / payment are performed using these various masters.
Alternatively, data exchange with another POS register 11A is performed. The RAM 111 also stores information on the business hours of the restaurant.

Next, the cooling storages 1A, 1B and 1C shown as an embodiment of the kitchen machine in FIG. 3 are cooling storages such as a commercial freezing / refrigerator installed in a restaurant kitchen. In addition, a cooking device, a dishwasher, and the like are installed in the kitchen in addition to these cooling storages. Here, only the cooling storages will be described. Each of the cooling storages 1A, 1B, and 1C has a main body 5 formed of a heat insulating box 2 that is open on the front surface, and a storage room 3 is formed in the heat insulating box 2. The front opening of the storage room 3 is closed by a door 4 so that it can be opened and closed. In the storage room 3, a cooler 6 constituting a refrigeration cycle of the cooling device and a cooling fan 7 driven by a motor are provided. A dew-proof heater 8 for preventing dew condensation is provided at the opening edge of the heat-insulating box 2.

On the other hand, a machine room 12 is formed below the heat-insulating box 2, and in the machine room 12, the compressor 1 which forms a refrigerating cycle of a cooling device together with the cooler 6 is provided.
3, a condenser 14, a condenser fan 16, and the like.

When the compressor 13 is operated, the high-temperature and high-pressure refrigerant discharged from the compressor 13 radiates heat in the condenser 14 to be condensed, is decompressed by a decompression device (not shown), and is supplied to the cooler 6. Is done. In the cooler 6, the refrigerant evaporates and exerts a cooling function. Thereafter, the low-temperature gas refrigerant returns to the compressor 13 again. When the cooling fan 7 is operated, the cool air cooled by the cooler 6 is circulated into the storage room 3, whereby the storage room 3 is cooled. In addition, when the condenser fan 16 is operated, outside air flows through the condenser 14 and the compressor 13, so that these are air-cooled. Further, when the dew-proof heater 8 is energized, the opening edge of the heat insulating box 2 is heated to prevent dew condensation.

Next, in FIG. 4, reference numeral 21 denotes each of the refrigerators 1A to 1A.
Reference numeral 22 denotes an AC power supply line wired in the main body 5 of 1C, and reference numeral 22 denotes a signal line connected to the bus I / O interface 99 of the POS register 11 as described above. A drive board 23 of the compressor 13, a power board 24 of each of the fans 7 and 16, and a power board 26 of the dew-proof heater 8 are connected to an AC power line 21.

The signal line 22 is provided with a chip-shaped temperature sensor 27 as a sensor and the chip-shaped switching elements 28 attached to the drive board 23 and the power supply boards 24 and 26, respectively. Connected via. Although one switching element 28 is shown on the power supply board 24, it is actually provided for each of the fans 7 and 16.

In the embodiment, the drive board 23 and the power supply boards 24 and 26 correspond to the compressor 13 and the fans 7 and 16 respectively.
And the drive board 23 and the power supply boards 24 and 26, together with the respective switching elements 28, are combined with the compressor 1
3, a configuration in which each of the fans 7 and 16 and the dew-proof heater 8 are built in may be used.

According to this configuration, the wiring is completed only by connecting the compressor 13, the fans 7 and 16, or each of the switching elements 28 built in the dew-proof heater 8 and the connector of the signal line 22. Assembly and wiring workability is further improved.

FIG. 5 shows the structure of the temperature sensor 27.
The temperature sensor 27 includes a CPU 4 serving as a sensor-side control unit.
3, a memory 44 as storage means, an I / O interface 46 as transmission / reception means, and an A / D converter 47
A sensor unit 48 as a detection element connected to the A / D converter 47, and a capacitor 49 as a power storage element
And a diode 51 as a rectifying element.

In this case, the capacitor 49 is connected to the diode 5
1, and each element is connected to a connection point between the diode 51 and the capacitor 49. Signal line 2
2, a potential (high potential) of, for example, +5 V is applied, and the data is composed of pulses that fall from the high potential to a low potential of 0 V, for example.

While the high-potential and low-potential pulse signals constituting the data are at the high potential, power is supplied to each element as it is, and the capacitor 49 is also charged. During the low potential period, the capacitor 49 is discharged from the capacitor 49 to supply power to each element.

The temperature sensor 27 has Vcc (DC + 5).
V) A power supply terminal 45 is also provided, and is connected to a connection point between the diode 51 and the capacitor 49,
7, if this Vcc power supply terminal 45 is connected to a power supply line,
Each element is configured to be able to operate by power supply from a power supply line. That is, in this case, each element operates without filling the capacitor 49, so that the convenience is improved when it is desired to quickly operate the temperature sensor 27 at the time of inspection or the like.

Further, the CPU 43 takes in the temperature data detected by the sensor section 48 via the A / D converter 47 and temporarily writes it into the memory 44. When polling is performed by the I / O interface 46 from the controller 36 of the POS register 11 via the signal line 22, the memory 44
Temperature data written to the I / O interface 4
6 to the controller 36 via the signal line 22.

Here, the memory 44 stores an ID code of the temperature sensor 27 itself, identification data indicating that the sensor is a sensor, set value data such as an alarm temperature, a protocol for performing data communication with the controller 36, and the like. Have been. If a failure has occurred in the temperature sensor 27, the failure data is also written into the memory 44, and the PO
Sent to the controller 36 of the S cash register 11.

Next, the configuration of the switching element 28 is shown in FIG. The switching element 28 includes a CPU 58 as a switching element side control unit, a memory 59 as a storage unit, an I / O interface 61 as a transmission / reception unit, an I / O interface 62 as a driver, and an I / O interface 62 as a driver. , A transistor 63 as a switching means, a capacitor 64 as a power storage element, a diode 66 as a rectifying element, and the like.

In this case, the capacitor 64 is connected to the diode 6
6, and each element is connected to a connection point between the diode 66 and the capacitor 64. When the switching element 28 is connected to the signal line 22, power is supplied to each element as long as the high-potential and low-potential pulse signals constituting data are at the high potential as described above, and the capacitor 64 is also supplied to the capacitor 64. Charged. While the potential is low, the capacitor 64 discharges power to supply power to each element.

The switching element 28 is also provided with a Vcc (DC + 5V) power supply terminal 55 connected to the connection point between the diode 66 and the capacitor 64, as shown by the broken line in FIG. If connected, each element of the switching element 28 can operate even by power supply from the power supply line. That is, in this case, each element operates without filling the capacitor 64.
The convenience is improved when the user wants to operate the camera 8 quickly.

When ON / OFF data is transmitted from the controller 36 of the POS register 11 via the signal line 22 by the I / O interface 61, the CPU 58 performs an I / O interface 62 based on the ON / OFF data. Turns on / off the transistor 63.

Here, the memory 59 stores an ID code of the switching element 28 itself, identification data indicating that the element is a switching element, a protocol for performing data communication with the controller 36 of the POS register 11, and the like. . If a failure occurs in the switching element 28, the data is also written to the memory 59,
Sent to controller 36.

The switching element 28 is connected to each drive board 2
3. The switching unit 68 is wired on the power supply boards 24 and 26 as shown in FIG. That is, 69 is a photocoupler comprising a photodiode 69A and a phototriac 69B, 71 is a resistor, 72 is a diode as a rectifying element, and 73 is a capacitor 74 as a power storage element.

In this case, the capacitor 74 is connected to the diode 7
A resistor 7 is connected between the connection point of the diode 72 and the capacitor 74 and the collector terminal (indicated by S2 in FIG. 6) of the transistor 63 of the switching element 28.
1 and the photodiode 69A are connected in series. The terminal S1 (FIG. 6) of the switching element 28 is connected before the diode 72. The photo triac 69B is interposed between the AC power line 21 and the compressor 13, the fans 7, 15 and the dew prevention heater 8, respectively.

When the diode 72 is connected to the signal line 22, power is supplied to the photodiode 69A via the resistor 71 as long as the high-potential and low-potential pulse signals constituting data are at the high potential. , The capacitor 74 is also charged. While the potential is low, the capacitor 74 is discharged from the capacitor 74 to supply power to the photodiode 69A.

Similarly, the diode 72 and the capacitor 7
Vcc power supply terminal 60 is connected to the connection point
If the power supply terminal 60 is connected to the power supply line, the photodiode 69A can operate even by power supply from the power supply line. That is, in that case, each element operates without filling the capacitor 74.
Convenience is improved when it is desired to operate quickly at the time of inspection or the like.

The operation of the above configuration will be described. Each of the cooling storages 1A, 1B and 1C is connected to the POS
And the respective temperature sensors 27 and switching elements 28 are connected to the signal line 22,
First, the CPU 109 of the controller 36 of the POS register 11 scans the connection status of each element (temperature sensor 27, switching element 28) of each cooling storage 1A, 1B, 1C to the signal line 22.

The CPUs 43 and 58 of the temperature sensors 27 and the switching elements 28 of the respective cooling storages 1A, 1B and 1C
In response to polling from the controller 36 of the OS cash register 11, the own ID code stored in the memories 44 and 59 is returned. The CPU 109 of the controller 36 identifies the connection state between the temperature sensor 27 and the switching elements 28,... Based on the returned ID code, stores the state in the RAM 111, and thereafter transmits data to each element using this ID code. Will do.

The controller 3 of the POS register 11
The sixth CPU 109 polls the temperature sensors 27 of the cooling storages 1A to 1C at a predetermined cycle. This polling is performed based on the above-mentioned ID code. In response to this polling, the CPU 43 of the temperature sensor 27 of each of the cooling storages 1A to 1C stores the temperature data as described above in the POS register 11.
To the controller 36. C of controller 36
The PU 109 temporarily stores the received temperature data in the RAM 111
And compares the temperature data with the set temperature to
The N / OFF data is transmitted to the signal line 22 together with the ID code of the switching element 28 of the drive board 23 of each of the cooling storages 1A to 1C.

The C of the switching element 28 of the drive board 23
When receiving the ON / OFF data of its own ID code, the PU 58 receives the ON / OFF data of the
Is turned ON / OFF. ON / O of this transistor 63
The photodiode 69A is turned ON (light emission) by the FF /
It turns off (turns off), whereby the phototriac 69B is turned on / off, whereby the compressor 13 of each of the cooling storages 1A to 1C is started / stopped.

Incidentally, the fans 7 of each of the cooling storages 1A to 1C,
Since the 15 and the dew-proof heater 8 are continuously energized, ON / OFF data to that effect is transmitted based on the ID code of the switching element 28 of the power supply boards 24 and 26 of each of the cooling storages 1A to 1C. And each switching element 28
Are the fans 7, 15 based on the ON / OFF data.
Alternatively, it operates or energizes the dew-proof heater 8.

When starting the compressors 13 of the cooling storages 1A to 1C, the controller 36 of the POS register 11 stabilizes the power consumption by shifting the starting timings.

The controller 36 of the POS register 11
Changes the set temperature of each of the cooling storages 1A to 1C according to, for example, the ratio of the frozen food to the refrigerated food, based on the menu information (the food master or the like) held in the RAM 111. That is, for example, assuming that the ratio of frozen food: refrigerated food is 2: 1, the cold storage 1A and the cold storage 1B
Is set to the freezing temperature zone, and the cooling storage 1C is set to the refrigeration temperature zone.

Conversely, assuming that the ratio of the frozen food to the refrigerated food is 1: 2, the set temperature of the cooling storage 1A is set to the freezing temperature zone, and the cooling storage 1B and the cooling storage 1C are set.
Is the refrigerated temperature zone. As a result, it becomes possible to store foodstuffs by effectively utilizing the internal volumes of the cooling storages 1A to 1C according to the menu at that time.

Next, the controller 36 of the POS register 11
Shifts the set temperature of each of the cooling storages 1A to 1C to a relatively high value in each temperature zone outside of business hours.
As a result, the cooling storage 1A is out of business hours such as at night.
~ 1C of power consumption can be reduced.

If a failure has occurred in the temperature sensor 27 or the switching elements 28,..., The failure data is sent from the CPU of each element to the controller 36 of the POS register 11.
Sent to. When the CPU 109 of the controller 36 receives the failure data, the operation indicator control circuit 116
Displays on the operation display 103 that the temperature sensor 27 or the switching element 28 has failed. Furthermore, the modem 122 is used by the online communication control circuit 121 to notify the computer at the headquarters of the chain (also forming a POS controller together with the POS register 11) via a telephone line.

The controller 36 of the POS register 11
Delegates the operation management of each of the cooling storages 1A to 1C and other kitchen machines to be described later to the management by the computer of the headquarters (POS controller) by a predetermined switching setting operation or an instruction from the computer of the headquarters. In this case, each kitchen machine or the like exchanges data with the computer at the headquarters via the POS register 11 to control the operation.

Although the cooling storage is taken as an example of a kitchen machine in the embodiment, for example, in the case of a heating cooker or a dishwasher, the controller 36 of the POS register 11
It is possible to perform control such as performing a preheating operation (heating cooker) or a hot water supply operation (dishwasher) before the store opening time. Thus, the work after opening the store can be performed extremely smoothly.

In the case of the electromagnetic cooker, the controller 3 of the POS register 11 also manages the thawing time of the frozen food.
6 can be executed.

[0053]

As described above in detail, according to the present invention, a POS controller for holding sales management data such as various product masters, food masters, and sales information, and performing product ordering and settlement operations, A kitchen machine installed for performing cooling preservation and connected to the POS controller by a signal line is provided. The kitchen machine is connected to the signal line and a sensor connected to the signal line, and is provided in the kitchen machine. A switching element for controlling the operation of the device provided, the sensor comprising: a detection element; storage means having its own ID code; and transmission / reception means for exchanging data with the POS controller via a signal line. , A sensor-side control unit that fetches data detected by the detection element, writes the data in the storage unit, and transmits data in the storage unit to the POS controller by the transmission / reception unit The switching element includes a switching unit, a storage unit having its own ID code, a transmission / reception unit for transmitting / receiving data to / from the POS controller via a signal line, and a switching unit based on data from the transmission / reception unit. And the switching element side control means for controlling the means, the sensor side control means of the sensor of the kitchen machine writes the data detected by the detection element into the storage means, and the transmission / reception means through the signal line through the POS controller Data is sent to the PO
The S-controller can fetch data from the sensor of the kitchen machine without hindrance.

Further, the switching element side control means of the switching element of the kitchen machine controls the switching means based on the data from the POS controller received by the transmission / reception means via the signal line, so that the POS controller can operate the kitchen machine without any trouble. The control of the provided device can be executed.

As a result, the POS for managing the sales of the products
The controller can also control the operation control of the kitchen machine, and can realize comprehensive store management from the sales management of products to the cooling and preservation management of foodstuffs.

In this case, since the sensor and the switching element have their own ID code in the storage means,
By connecting the kitchen machine to the signal line, the POS controller can identify the sensor and the switching element, and the wiring between the sensor and the switching element is completed.

Thus, according to the present invention, it is possible to wire a kitchen machine by a so-called plug-in, and it is possible to significantly simplify the wiring. Further, since common software can be used for the POS controller irrespective of the number of kitchen machines, the cost can be significantly reduced by common use.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a POS system of the present invention.

FIG. 2 is a block diagram of an electric circuit of the POS register of FIG. 1;

FIG. 3 is a sectional view of a cooling storage according to the embodiment.

FIG. 4 is a wiring diagram of an electric system of the cooling storage of FIG. 3;

FIG. 5 is a block diagram of an electric circuit of the temperature sensor.

FIG. 6 is a block diagram of an electric circuit of the switching element.

FIG. 7 is an electric circuit diagram of a switching unit using a switching element.

[Explanation of symbols]

 1A, 1B, 1C Cooling storage 6 Cooler 7 Cooling fan 8 Dew-proof heater 11 POS register (POS controller) 13 Compressor 14 Condenser 22 Signal line 27 Temperature sensor 28 Switching element 31, 43, 58, 109 CPU 32, 44, 59 Memory 36 Controller 42 In-line cable 46, 61 I / O interface 48 Sensor unit 49, 64 Capacitor 51, 66 Diode 63 Transistor 69 Photocoupler 69A Photodiode 69B Phototriac 99 Bus I / O interface

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumi Maekawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kazuya Imamura 2--5 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Tsutomu Ishikura 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (reference) 3E042 AA04 BA09 CC10 EA01 5B049 BB55 CC05 CC21 DD01 DD04 EE01 EE56 FF02 FF04 GG01 GG05 GG07 9A001 JJ58 KK57

Claims (1)

[Claims] 1. A POS controller for holding sales management data such as various product masters, food masters, sales information, etc., and for ordering and adjusting payment of products, and a POS controller for cooling and storing foods. A kitchen connected to the controller by a signal line; a sensor connected to the signal line; and a switching connected to the signal line to control operation of equipment provided in the kitchen. An element, the sensor comprising: a detection element; storage means having its own ID code; transmission / reception means for transmitting and receiving data to and from the POS controller via the signal line; and data detected by the detection element. Sensor-side control which takes in data into the storage means, and transmits data in the storage means to the POS controller by the transmission / reception means. A switching unit, a switching unit, a storage unit having its own ID code, a transmission / reception unit for exchanging data with the POS controller via the signal line, and a transmission / reception unit from the transmission / reception unit. A POS system comprising: a switching element-side control unit that controls the switching unit based on data.