Apparatus for electric power tool

1. An apparatus for an electric power tool, comprising:

a controller configured to control an operation of the apparatus for an electric power tool in accordance with operating conditions that are previously set;

a storage device configured to previously store a settable item indicating an operating condition whose setting is changeable, among the operating conditions, and a settable range of the operating condition; and

a communication device configured to perform communication with an external device,

wherein the controller is configured to:

read the settable item and the settable range from the storage device in accordance with a request from the external device received by the communication device, and to transmit the settable item and the settable range to the external device through the communication device,

determine, when a change request of the operating condition transmitted from the external device is received by the communication device, whether the change request corresponds to the settable item and the settable range stored in the storage device,

change a setting of the operating condition in accordance with the change request if the change request corresponds to the settable item and the settable range,

either prohibit change of the setting of the operating condition or correct the change request and then change the setting of the operating condition if the change request does not correspond to the settable item and the settable range, and

set, if the change request corresponds to the settable item stored in the storage device and is outside the settable range stored in the storage device, the operating condition to one of an upper limit value and a lower limit value that is closest to the change request within the settable range in accordance with the change request.

2. The apparatus for an electric power tool according to claim 1 , wherein the controller is configured to notify, if the change request does not correspond to at least one of the settable item or the settable range, the non-correspondence through a notification device.

3. The apparatus for an electric power tool according to claim 1 ,

wherein the storage device stores, in addition to the settable item and the settable range, a settable step value that is a minimum unit when changing the setting of the operating condition, and

wherein the controller is configured to also transmit the settable step value when transmitting the settable item and the settable range to the external device in accordance with the request from the external device.

4. The apparatus for an electric power tool according to claim 3 , wherein the controller is configured such that, when a change request of the operating condition transmitted from the external device is received by the communication device and the setting of the operating condition is to be changed in accordance with the change request, and if a change value of the operating condition specified by the change request does not correspond to the settable step value, the controller corrects the change value to a change value that corresponds to the settable step value and then changes the setting of the operating condition.

5. The apparatus for an electric power tool according to claim 1 , wherein the controller is configured to stop the operation of the apparatus for an electric power tool if a change request of the operating condition transmitted from the external device is received by the communication device while controlling the operation of the apparatus for an electric power tool.

6. The apparatus for an electric power tool according to claim 1 , wherein the communication device is configured to perform a near field wireless communication with the external device.

7. The apparatus for an electric power tool according to claim 1 , wherein the apparatus for an electric power tool is included in one of an electric power tool, a battery configured to be attached to the electric power tool, and a charger configured to charge the battery.