The lifting gear includes a rotatably mounted drum for winding up tension means, which is driven in rotation by at least one rotary driving device comprising a rotary driving motor acting on the drum through at least one change-speed gearbox. The packet identifiers are associated with a predetermined increment, but any change in the predetermined increment is ignored. The device for diagnosing the velocity and the dead time of an exhaust gas probe also includes a comparing unit for comparing the modeled signal with the measured signal for diagnosing the velocity and the dead time of the exhaust gas probe after a default change of a fuel air ratio of an air fuel mixture that is supplied to the combustion engine. When the bridge does in fact receive the next read command from the host, a check is made to see if the second read command is for the next sequential location from the first read command. The at least one bend in the shaft of the fire poker provides for a device that is more comfortable to wield, is better from an ergonomic perspective and allows for considerably easier manipulation of the fuel of a fire.