JP2005260853A - Radio communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication apparatus which can determine a radio parameter with a user's intention, which can automatically set the radio environmental condition which can perform employment of the radio communication with high convenience. <P>SOLUTION: The radio communication apparatus includes a control means 7, a storage means 8, a user's intention making switch 9 and an automatic setting switch 10, and includes an automatic setting means 3 which selects the radio parameter, such as an electric wave environmental measuring time, speed priority/communication range priority, the existence of intermodulation consideration, the existence of packet size optimum and slave unit radio parameter, such as the registered number of slave units, and automatically sets the radio environmental condition of the apparatus, such as a frequency channel, receiving power, transmission power from the slave unit ID and the slave units 1B1-1B5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wireless communication apparatus including a master unit and a plurality of slave units that execute data communication in a production process as part of factory automation (FA). The present invention relates to a wireless communication apparatus capable of automatically setting wireless environmental conditions.

  2. Description of the Related Art Conventional wireless communication apparatuses are known in which a master unit selects one frequency channel from a plurality of frequency channels and performs data communication between the master unit and a plurality of slave units.

  In this type of wireless communication apparatus, a “carrier sense” function for checking whether or not a frequency channel to be used is free (so-called empty channel) and a unique “call name” (for example, a slave unit) at the start of transmission The function of transmitting (unique ID) is obligated under the Radio Law, for example, in a 429 MHz band 10 mW specific low-power wireless facility (corresponding to a wireless communication device).

  In this wireless communication system, 40 frequency channels (CH) with an interval of 12.5 KHz are allocated from 429.2500 MHz to 429.7375 MHz.

  Prior to operation, a conventional wireless communication device determines wireless parameters such as radio wave environment measurement time, speed priority / communication distance priority setting, presence / absence of intermodulation considerations, presence / absence of packet length optimization, number of registered slave units, etc. , Adapted to the wireless environmental conditions where the equipment is installed.

In addition, as disclosed in “Patent Document 1” (radio transmission apparatus and radio reception apparatus), the conventional radio communication apparatus has more frequency groups and more frequency group channels obtained by grouping frequency channels. And the frequency channel can be determined so as not to cause cross modulation (intermodulation) interference.
JP-A-11-225149

  Conventional wireless communication devices determine radio parameters such as radio wave environment measurement time, speed priority / communication distance priority setting, presence / absence of intermodulation consideration, packet length optimization, number of registered slave units, etc. And wireless environment conditions must be measured after measuring the radio wave condition and the user is aware of the frequency band and intermodulation, etc., which requires wireless technology and experience, and is a difficult task. is there.

  In addition, there is a problem that complicated work is required to determine wireless parameters and setting wireless environment conditions, and a large number of man-hours are required.

  The conventional wireless communication device disclosed in “Patent Document 1” can be set relatively easily so that the frequency channel to be used does not cause interfering interference. However, other wireless parameters are determined and wireless environment conditions are set. In addition, wireless technology and experience are required, and there is a problem that the work becomes complicated.

  The present invention has been made to solve such a problem, and its purpose is to determine radio parameters at the user's will and to automatically set radio environment conditions in which radio communication can be operated. It is to provide a communication device.

  In order to solve the above-described problems, a wireless communication apparatus according to the present invention is a wireless communication apparatus including a master unit and a plurality of slave units that execute data communication in a production process as part of factory automation (FA). Select wireless parameters such as environment measurement time, speed priority / communication distance priority, whether or not to consider intermodulation, whether or not packet length is optimal, and the number of registered slave units, and set the wireless parameters to the frequency channel and received power based on the wireless environment of the device. And an automatic setting means for automatically setting wireless environment conditions such as a slave unit ID and transmission power from the slave unit.

  The radio communication device according to the present invention selects radio parameters such as radio wave environment measurement time, speed priority / communication distance priority, presence / absence of intermodulation consideration, presence / absence of optimal packet length, and the number of registered slave units. Since it has automatic setting means for automatically setting the radio environment conditions such as frequency channel, received power, slave unit ID, and transmission power from the slave unit based on the radio environment, the user can set the radio parameters by a simple operation. By simply selecting, it is possible to set up a wireless environment condition suitable for the wireless environment where the device is placed and to construct an operation system.

  The automatic setting unit according to the present invention stores a wireless parameter, stores a wireless environment condition that is automatically set, and a control unit that sets the wireless environmental condition based on the wireless parameter from the storage unit; And a user decision switch for determining a radio parameter by the user's intention, and an automatic setting activation switch for activating the setting of the radio environmental condition.

  The automatic setting unit according to the present invention stores a wireless parameter, a storage unit that stores the automatically set wireless environmental condition, a control unit that sets the wireless environmental condition based on the wireless parameter from the storage unit, and a user The user decision switch that determines the wireless parameters with the intention of the user and the automatic setting start switch that activates the setting of the wireless environment conditions, so that even if the user does not have wireless technology or wireless knowledge, the user desires It is possible to select a radio parameter and to set a radio environment condition corresponding to the radio parameter.

  Further, the storage means according to the present invention is characterized by comprising a wireless parameter storage area for storing a wireless parameter to be selected and a wireless environment condition storage area for storing a wireless environment condition to be automatically set.

  Since the storage means according to the present invention includes a wireless parameter storage area for storing a wireless parameter to be selected and a wireless environment condition storage area for storing a wireless environment condition to be automatically set, the wireless parameter storage area and the wireless environment condition storage are stored. By displaying the items in the area, the initial setting can be confirmed or changed.

  Further, the user decision making switch according to the present invention comprises a selection switch for selecting a radio parameter, and a selection / determination switch in which several patterns of radio parameters have been selected in advance except for registration of a slave unit. To do.

  The user decision making switch according to the present invention includes a selection switch for selecting a radio parameter and a selection / determination switch in which several patterns of radio parameters have been selected in advance except for registration of a slave unit, so that the operation is extremely simple. The radio parameters at the start or change can be selected.

  The radio communication device according to the present invention selects radio parameters such as radio wave environment measurement time, speed priority / communication distance priority, presence / absence of intermodulation consideration, presence / absence of optimal packet length, and the number of registered slave units. Since it has automatic setting means for automatically setting the radio environment conditions such as frequency channel, received power, slave unit ID, and transmission power from the slave unit based on the radio environment, the user can set the radio parameters by a simple operation. By simply selecting, it is possible to establish a system of operation by setting radio environment conditions suitable for the radio environment where the apparatus is placed, which is easy to use and can improve convenience.

  The automatic setting unit according to the present invention stores a wireless parameter, stores a wireless environment condition that is automatically set, and a control unit that sets the wireless environmental condition based on the wireless parameter from the storage unit; , Equipped with a user decision switch that determines wireless parameters at the user's will and an automatic setting start switch that activates the setting of the wireless environmental conditions, so even if the user does not have wireless technology or knowledge, It is possible to select a desired radio parameter, to set a radio environment condition corresponding to the radio parameter, and to appeal ease of use.

  Further, since the storage means according to the present invention includes a wireless parameter storage area for storing a wireless parameter to be selected and a wireless environment condition storage area for storing a wireless environment condition to be automatically set, the wireless parameter storage area and the wireless environment By displaying the items in the condition storage area, the initial setting can be confirmed or changed, and the management, maintenance and inspection of the apparatus can be executed efficiently.

  In addition, the user decision making switch according to the present invention includes a selection switch for selecting a wireless parameter and a selection / determination switch in which several patterns of wireless parameters have been selected in advance except for registration of a slave unit. The wireless parameters at the time of starting or changing the operation can be selected, and anyone can use it, even if they are not skilled workers.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall layout diagram of a wireless communication apparatus according to the present invention. In FIG. 1, a wireless communication device 1 is composed of a master unit 1A and slave units 1B1 to 1B5, and is arranged in a production process LN as part of factory automation (FA). In addition, although the subunit | mobile_unit was represented by 5 units | sets, you may comprise 6 units | sets or more.

  The master unit 1A and the slave units 1B1 to 1B5 form the same group, perform wireless communication with each other through one frequency channel, and store data of devices (for example, PLC: programmable controller) necessary for the production process LN. The device 1A transmits to the child devices 1B1 to 1B5, the devices (for example, PLC) are operated by the child devices 1B1 to 1B5, and the result data (for example, management data) is transmitted from the child devices 1B1 to 1B5 to the parent device 1A.

  FIG. 2 is a block diagram showing the principal part of one embodiment of the wireless communication apparatus (base unit) according to the present invention. In FIG. 2, the wireless communication device 1 (master unit 1 </ b> A) includes a transmission / reception unit 2 having an antenna ANT, an automatic setting unit 3, an operation switch 4, an external interface 5, and a display unit 6.

  The transmission / reception unit 2 transmits data for setting the radio environmental condition supplied from the control unit 7 via the antenna ANT, and provides the control unit 7 with data received from the antenna ANT.

  The automatic setting means 3 selects radio parameters such as radio wave environment measurement time, speed priority / communication distance priority, consideration of intermodulation, optimal packet length, number of registered slave units, etc. Based on this, the wireless environment conditions such as frequency channel, received power, handset ID, and transmission power from handset 1B1 to 1B5 are automatically set.

  The automatic setting unit 3 includes a control unit 7, a storage unit 8, a user decision making switch 9, and an automatic setting start switch 10.

  The control means 7 has various processing functions, arithmetic functions, comparison / determination functions, sequence functions, access functions, etc. based on a microprocessor, and executes various measurements in the wireless environment based on a software program stored in the storage means 8. Then, the wireless environment condition is set by comparing the measured result with the reference value. The control means 7 controls the operations of the storage means 8, the user decision making switch 9, the automatic setting switch 10 and the transmission / reception unit 2, the operation switch 4, the external interface 5 and the display means 6 that form the automatic setting means 3.

  Based on user intention information supplied when the user decision making switch 9 is operated, the control means 7 receives the radio wave environment measurement time, speed priority / communication distance priority, intermodulation consideration, packet length optimization and slave unit from the storage means 8 Control is performed to read the wireless parameters of the registered number and display them on the display means 6.

  In addition, the control unit 7 performs control to store the wireless parameter selected by operating the user decision switch 9 while viewing the wireless parameter displayed on the display unit 6 in the storage unit 8 as decision information.

  Further, after the wireless parameter is determined as the decision making information, the control means 7 determines the wireless parameter of the decision making information stored in the storage means 8 based on the automatic setting information supplied by operating the automatic setting switch 10. Radio environment conditions are determined in the order of radio wave environment measurement time, speed priority / communication distance priority, intermodulation consideration, packet length optimization, and number of registered slave units in order of reading, determined radio parameters, and suitable for the operation of the entire device Radio environment conditions such as a frequency channel (CH) without intermodulation, reception power of the slave units 1B1 to 1B5, IDs of the slave units 1B1 to 1B5, and transmission power of the slave units 1B1 to 1B5 are set.

  When the radio environment condition is set, the control means 7 first measures the radio wave environment measurement time (for example, 10 minutes) and the received power of the frequency channels 1CH to kCH, and stores the received power corresponding to the frequency channel in the storage means 8. Then, each received power is compared with a reference value, and a frequency channel having a received power lower than the reference value is stored in the storage means 8 as an empty channel that can be used for radio communication.

  Next, if there is radio parameter intermodulation consideration, the presence or absence of a frequency channel in use in a channel near an empty channel is confirmed. If there is a frequency channel in use (for example, an adjacent channel), This free channel is excluded from the available free channels so that no modulation occurs.

  Subsequently, a small available channel (for example, 1CH in the case of 1CH, 2CH, 5CH, 6CH) is set as a fixed channel.

  Next, optimize the packet length of the packet to be transmitted on the fixed channel (when packet length optimization is used), give priority to speed (when speed priority / communication distance priority is speed), and set the transmission power to a predetermined value. The slave unit number is added to the packet and transmitted to the slave units 1B1 to 1B5.

  When the received powers to which the slave unit IDs (ID1 to ID5) are added are received from the slave units 1B1 to 1B5, the received power corresponding to the slave unit IDs (ID1 to ID5) is stored in the storage unit 8, and the received power is used as a reference. The transmission power of the slave units 1B1 to 1B5 is set in comparison with the value and stored in the storage means 8, and the transmission power value is transmitted to the slave units 1B1 to 1B5 to set the transmission power to the slave units 1B1 to 1B5. Let

  With the above-described operation, the control unit 7 can set the radio environment condition required for device operation based on the radio parameter determined by the user.

  The storage means 8 is composed of a fixed memory such as a RAM for storing software programs and a rewritable memory such as a flash memory for storing wireless parameters and wireless environmental conditions, and supplies the wireless parameters and wireless environmental conditions to the control means 7. The decision making information supplied from the control means 7 is stored, and the wireless environmental conditions set by the control means 7 are stored.

  FIG. 3 is an image diagram of an embodiment of the storage means according to the present invention. In FIG. 3, the storage means 8 includes a wireless parameter storage area 8a and a wireless environment condition storage area 8b.

  (A) In the figure, the radio parameter storage area 8a includes radio wave environment measurement time (selected items such as 5 minutes, 10 minutes, 20 minutes, and 30 minutes), speed priority / communication distance priority (speed, communication signal distance selection items). ), Radio parameters of intermodulation consideration (selection item with or without), packet length optimization (selection item with or without) and the number of registered slave units (registration of the number of slave units x) are stored.

  (B) In the figure, the radio environment condition storage area 8b includes a frequency channel (items 1CH, 2CH, 3CH,..., NCH), received power (items PR1, PR2, PR3,..., PRn), and slave unit ID ( ID1, ID2,... IDk) and slave unit transmission power (PS1, PS2,..., PSk) are stored, and the wireless environment condition finally set by the control means 7 is, for example, a fixed (empty) channel: 1CH, transmission power: PW1, slave unit ID (slave unit transmission power): ID1 (PS1), ID2 (PS2),..., IDk (PSk).

  The user decision switch 9 is a switch for the user to select and determine a radio parameter by his / her own intention prior to the operation of the apparatus. The user operates the switch and the decision making information is supplied to the control means 7. Then, each parameter item is selected and determined while viewing the wireless parameters shown in FIG.

  FIG. 4 is an image diagram of an embodiment of a user decision making switch according to the present invention. (A) shows the switch configuration, and (b) shows the setting items of the selection / determination switch. (A) In the figure, the user decision making switch 9 includes a decision switch 9a, a selection switch 9b, and a selection / determination switch 9c.

  The decision switch 9a supplies decision making information to the control means 7 and causes the display means 6 to display the wireless parameters shown in FIG.

  The selection switch 9b selects or inputs the displayed radio wave environment measurement time, speed priority / communication distance priority, intermodulation consideration, packet length optimization, and the number of registered slave units (the number of registered slave units) to determine radio parameters. .

  The selection / determination switch 9c includes, for example, buttons “A”, “B”, and “C”, has wireless parameters set in advance, and determines wireless parameters by a one-touch operation. (B) The figure shows “A”, “B”, “C” buttons and radio parameters for preset radio wave environment measurement time, speed priority / communication distance priority, intermodulation consideration, and packet length optimization. Only the number of slave units registered is input from the operation switch 4 shown in FIG.

  The determination switch 9a is configured to display the wireless parameter of the item to be selected, but a default value may be selected in advance at the time of shipment.

  As described above, the user decision making switch 9 according to the present invention includes the selection switch 9a for selecting a wireless parameter, and the selection / determination switch 9c in which several patterns of wireless parameters have been selected in advance except for registration of the slave unit. Therefore, it is possible to select a radio parameter at the start or change of operation very simply, and anyone can use it, even if it is not a skilled worker.

  The automatic setting switch 10 is a switch that activates and sets wireless environmental conditions after determining wireless parameters, and supplies automatic setting information to the control means 7 by a user operation.

  The operation switch 4 is composed of various function keys including a numeric keypad of 0 to 9, and executes data transmission / reception with an external host device connected to the external interface 5 or inputs the number of registered slave units of wireless parameters. .

  The external interface 5 connects an external higher-level device, takes I / O and I / F with the external higher-level device, and receives control data from the external higher-level device from the transmission / reception unit 2 via the control unit 7 from the slave units 1B1 to 1B5. The management data transmitted from the slave units 1B1 to 1B5 is received via the transmission / reception unit 2 → the control means 7, and the management data is transmitted to the external host device.

  The display means 6 includes a display device such as an LCD, and displays wireless parameters and wireless environmental conditions supplied from the control means 7.

  As described above, the automatic setting unit 3 according to the present invention stores the wireless parameter, the storage unit 8 that stores the automatically set wireless environment condition, and the wireless environment condition based on the wireless parameter from the storage unit 8. Since the control means 7 for setting, the user decision switch 9 for determining the wireless parameter by the user's intention, and the automatic setting start switch 10 for starting the setting of the wireless environment condition are provided, the user has wireless technology and wireless knowledge. Even if it is not, it is possible to select a desired radio parameter by the user's intention, to realize setting of a radio environment condition corresponding to the radio parameter, and to appeal the ease of use.

  Further, since the storage means 8 according to the present invention includes the wireless parameter storage area 8a for storing the wireless parameter to be selected and the wireless environment condition storage area 8b for storing the wireless environment condition to be automatically set, the wireless parameter storage area By displaying the items in the storage area 8b and the wireless environment condition storage area 8b, the initial setting can be confirmed or changed, and the management, maintenance, and inspection of the apparatus can be executed efficiently.

  FIG. 5 is an operation procedure flow chart of one embodiment of radio parameter determination according to the present invention. In FIG. 5, the user operates the decision switch 9a of the user decision making switch 9 shown in FIG.

  In step S1, the radio wave environment measurement time button of the selection switch 9b is operated to set the radio wave environment measurement time.

  In step S2, the speed / communication distance button is operated to select speed priority or communication distance priority.

  In step S3, the intermodulation consideration button is operated to select whether or not to consider intermodulation.

  In step S4, it is selected whether to optimize the packet length by operating the packet length optimization button.

  In step S5, the number of slave units registered button is operated, and the number of slave units to be registered (for example, “5” for five units) is input and set from the numeric keypad of the operation switch 4.

  By this operation procedure, a desired radio parameter can be determined by the user's own intention.

  FIG. 6 is a control sequence flow diagram of one embodiment of automatic setting of radio environment conditions according to the present invention. The control unit 7 executes the sequence flow of the present embodiment. When the user operates the automatic setting switch 10, an automatic setting sequence is activated.

  In step S11, the electric field strength is read and stored in correspondence with the measured CH (frequency channel). Note that only the maximum value of the electric field strength is stored. Further, when a packet from the same existing device is detected, the identification of the used CH and the device of the same model is also stored.

  In step S12, it is determined whether or not the measurement time is equal to or greater than m1 (radio wave environment measurement time), and if it is equal to or greater than m1 (radio wave environment measurement time), the process proceeds to step S13. On the other hand, if it is less than m1 (radio wave environment measurement time), the process proceeds to step S11.

  In step S13, if the electric field strength is equal to or less than a predetermined value, it is stored as an empty channel.

  In step S14, it is determined whether speed priority or communication distance priority is given. If speed priority is given, the process proceeds to step S15. On the other hand, if the communication distance has priority, the process proceeds to step S16.

  In step S15, a small free CH is assigned to a fixed channel.

  In step S16, a CH used for MCA (multi-channel access) is allocated from the free CH, and the process proceeds to step S17.

  In step S17, the handset is called. The process is executed until all of the registered slave units (for example, five units) respond.

  In step S18, the electric field strength during communication with the slave unit is registered.

  In step S19, the unique ID of the slave unit is registered.

  With this control sequence, it is possible to set the wireless environment condition in which the device is placed based on the wireless parameter determined by the user and operate the device. This automatic setting of the wireless environmental conditions is performed in a laboratory or a production process site.

  FIG. 7 is an operation flow chart of one embodiment of automatic setting of wireless environment conditions according to the present invention. Note that the operation flow of the present embodiment is executed by the control means 7. When the user operates the automatic setting switch 10, an automatic setting sequence is activated.

  In step S21, a test packet is transmitted.

  In step S22, it is determined whether or not the BER (bit error rate) is equal to or less than a predetermined value. If it is equal to or less than the predetermined value, the process proceeds to step S23. On the other hand, if it exceeds the predetermined value, the process proceeds to step S24.

  In step S23, the antenna power is reduced and steps S21 and S22 are repeated.

  In step S24, it is determined whether or not the packet length is to be optimized. If so, the process proceeds to step S25. On the other hand, when not optimizing, it transfers to step S28.

  In step S25, a test packet is transmitted.

  In step S26, it is determined whether or not the PER (packet error rate) is equal to or less than a predetermined value. If it is equal to or less than the predetermined value, the process proceeds to step S27. On the other hand, if it exceeds the predetermined value, the process proceeds to step S28.

  In step S27, the packet length is increased and steps S25 and S26 are repeatedly executed.

  In step S28, the completion of setting is notified.

  With this operation flow, it is possible to set the wireless environment condition in which the device is placed based on the wireless parameter determined by the user and operate the device. The automatic setting of the wireless environment condition is performed at the production process site, but it is not necessarily an item that must be performed, and can be omitted.

  FIG. 8 is an operation flowchart of one embodiment of the slave unit according to the present invention.

  In step P1, it is determined whether or not there is only a call from the parent device. If the call is made, the process proceeds to step P3. On the other hand, if it is not a call, the process proceeds to step P2.

  In Step P2, the frequency channel is set from CH to CH + 1, and the process proceeds to Step P1.

  In step P3, the call is answered.

  In step P4, the channel, transmission output, and packet determined by the parent device are set and stored.

  In step P5, the completion of setting is notified.

  With this operation flow, the slave unit is also set under the wireless environment conditions determined by the master unit, and wireless communication with the master unit becomes possible.

  As described above, the radio communication apparatus 1 according to the present invention selects radio parameters such as radio wave environment measurement time, speed priority / communication distance priority, consideration of intermodulation, optimal packet length, and the number of registered slave units. In addition, since the wireless parameter is provided with the automatic setting means 3 for automatically setting the wireless environment conditions such as the frequency channel, the received power, the slave unit ID, and the transmission power from the slave unit based on the wireless environment of the apparatus, the user can simply By simply selecting the radio parameters, you can set the radio environment conditions that match the radio environment where the device is located, and build an operating system that is easy to use and improves convenience be able to.

  The wireless communication device according to the present invention can determine wireless parameters at the user's will, automatically set wireless environment conditions that allow wireless communication operation, and can be used in any wireless communication device used as part of factory automation (FA). Can be applied.

Overall layout configuration diagram of wireless communication apparatus according to the present invention 1 is a block diagram of a main part of an embodiment of a wireless communication apparatus (master) according to the present invention An image of an embodiment of a storage means according to the present invention An image of an embodiment of a user decision making switch according to the present invention Operation procedure flow diagram of one embodiment of wireless parameter determination according to the present invention Control sequence flow diagram of one embodiment of automatic setting of radio environment conditions according to the present invention Operation flow diagram of one embodiment of automatic setting of wireless environment conditions according to the present invention Operation flow diagram of one embodiment of the handset according to the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wireless communication apparatus 1A Main | base station 1B1-1B5 Slave 2 Transmission / reception part 3 Automatic setting means 4 Operation switch 5 External interface 6 Display means 7 Control means 8 Storage means 8a Wireless parameter storage area 8b Radio environment condition storage area 9 User decision switch 9a decision switch 9b selection switch 9c selection / decision switch 10 automatic setting switch ANT antenna 1CH to nCH frequency channel PR1 to PRn reception power ID1 to IDk slave unit ID name PS1 to PSk slave unit transmission power LN production process

Claims (4)

A wireless communication device comprising a master unit and a plurality of slave units that execute data communication within a production process as part of factory automation (FA),
Select radio parameters such as radio wave environment measurement time, speed priority / communication distance priority, consideration of intermodulation, optimal packet length and number of registered slave units, and the wireless parameters based on the wireless environment of the device, the frequency channel, A wireless communication apparatus comprising automatic setting means for automatically setting wireless environment conditions such as reception power, slave unit ID, and transmission power from a slave unit. The automatic setting means stores wireless parameters, storage means for storing automatically set wireless environmental conditions, control means for setting wireless environmental conditions based on wireless parameters from the storage means, and user's intention The wireless communication apparatus according to claim 1, further comprising: a user decision determination switch that determines a wireless parameter and an automatic setting activation switch that activates setting of a wireless environment condition. 3. The wireless communication apparatus according to claim 2, wherein the storage means includes a wireless parameter storage area for storing a wireless parameter to be selected, and a wireless environment condition storage area for storing a wireless environment condition to be automatically set. . 3. The user decision switch includes a selection switch for selecting a wireless parameter, and a selection / determination switch in which several patterns of wireless parameters have been selected in advance except for registration of a slave unit. The wireless communication device described.

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