A method of authenticating a consumable or detachable element of a continuous inkjet printer comprising: the controller of the printer generating a 1.sup.st item of random information that is dispatched to an authentication circuit of the element; encrypting the 1.sup.st item of information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of information to the controller; encrypting the 1.sup.st item of information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information to authenticate the consumable element; and if the consumable element is authenticated, dispatching at least one part of a 3.sup.rd key, termed the shared key, by the element to the printer.

A method of authenticating a consumable or detachable element of a continuous inkjet printer comprising: the controller of the printer generating a 1.sup.st item of random information that is dispatched to an authentication circuit of the element; encrypting the 1.sup.st item of information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of information to the controller; encrypting the 1.sup.st item of information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information to authenticate the consumable element; and if the consumable element is authenticated, dispatching at least one part of a 3.sup.rd key, termed the shared key, by the element to the printer.

A method is provided for configuring an electrical drive system and a machine is provided that can execute such a method. In order to select and set drive system parameter values, it is possible here, when a selectable number exceeds a threshold value, to display a dialogue in which a search field for supporting the input is available.

A method is provided for configuring an electrical drive system and a machine is provided that can execute such a method. In order to select and set drive system parameter values, it is possible here, when a selectable number exceeds a threshold value, to display a dialogue in which a search field for supporting the input is available.

Information is collected from a management target device having a drive unit such as a machine tool, and this collected information is more practically used. An information collection device includes a collection unit that collects, from management target devices having a drive unit, operating state information which is information indicating an operating state of the management target device while operating accompanying movement of the drive unit; and a comparison unit that extracts a plurality of sets of information matching in a predetermined condition from the operating state information thus collected, and outputs a comparison result of the plurality of sets of information thus extracted.

Information is collected from a management target device having a drive unit such as a machine tool, and this collected information is more practically used. An information collection device includes a collection unit that collects, from management target devices having a drive unit, operating state information which is information indicating an operating state of the management target device while operating accompanying movement of the drive unit; and a comparison unit that extracts a plurality of sets of information matching in a predetermined condition from the operating state information thus collected, and outputs a comparison result of the plurality of sets of information thus extracted.

A method of authenticating a consumable or detachable element of a continuous inkjet printer comprising: the controller of the printer generating a 1.sup.st item of random information that is dispatched to an authentication circuit of the element; encrypting the 1.sup.st item of information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of information to the controller; encrypting the 1.sup.st item of information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information to authenticate the consumable element; and if the consumable element is authenticated, dispatching at least one part of a 3.sup.rd key, termed the shared key, by the element to the printer.

A method of authenticating a consumable or detachable element of a continuous inkjet printer comprising: the controller of the printer generating a 1.sup.st item of random information that is dispatched to an authentication circuit of the element; encrypting the 1.sup.st item of information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of information to the controller; encrypting the 1.sup.st item of information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information to authenticate the consumable element; and if the consumable element is authenticated, dispatching at least one part of a 3.sup.rd key, termed the shared key, by the element to the printer.

A method of authenticating a consumable or detachable element of a continuous inkjet printer, (CIJ), comprising: the controller of the printer generating and dispatching a 1.sup.st item of random information to an authentication circuit of the element; encrypting the 1.sup.st item of random information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of encrypted random information to the controller; encrypting the 1.sup.st item of random information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; and comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information. If the consumable element is authenticated, a shared key part of a 3.sup.rd key is dispatched by the consumable or detachable element to the CIJ.

A method of authenticating a consumable or detachable element of a continuous inkjet printer, (CIJ), comprising: the controller of the printer generating and dispatching a 1.sup.st item of random information to an authentication circuit of the element; encrypting the 1.sup.st item of random information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of encrypted random information to the controller; encrypting the 1.sup.st item of random information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; and comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information. If the consumable element is authenticated, a shared key part of a 3.sup.rd key is dispatched by the consumable or detachable element to the CIJ.