摘要:
A noise monitoring device capable of easily estimating a noise generation source in a factory is connected for communication with a plurality of machines in the factory. The noise monitoring device is provided with a noise information acquisition unit configured to acquire noise information including the time of generation of noise if the noise is generated in the machines, an operation information acquisition unit configured to continually acquire operation information of all the machines, a determination unit configured to extract the operation information at a point in time near the noise generation time, and a display unit configured to display the noise information and the operation information of all the machines at the point in time near the noise generation time.
摘要:
A serial communication branching device and a serial communication system are provided. The serial communication branching device, which branches a plurality of slaves connected to the master by a daisy chain into a plurality of paths, is equipped with a first communication circuit that carries out communication with the master connected to a preceding stage side, a plurality of second communication circuits that carry out communication with the slaves of the paths connected to a subsequent stage side, and a path selection circuit disposed between the first communication circuit and the second communication circuits. In the case that a slave connected on the subsequent stage side transmits a reply signal to the master responsive to a transmission signal transmitted from the master, the path selection circuit selects a path of the slave that transmits the reply signal, and outputs the reply signal from the selected path to the master.
摘要:
In a numerical control system including a numerical controller and a plurality of I/O units, a serial communication signal monitoring circuit is included inside the I/O unit to monitor a serial communication signal (data and an idle signal). When a state is detected in which a serial communication signal is high or low for a predetermined time or longer, the numerical control system acknowledges the state as disconnection of the serial communication signal, and generates a reset pulse signal to reset an internal register of the I/O unit. With this configuration, when the power supply of the numerical controller is turned off/on, it is unnecessary to turn off/on the power supply of the I/O unit.
摘要:
A serial communication branching device and a serial communication system are provided. The serial communication branching device, which branches a plurality of slaves connected to the master by a daisy chain into a plurality of paths, is equipped with a first communication circuit that carries out communication with the master connected to a preceding stage side, a plurality of second communication circuits that carry out communication with the slaves of the paths connected to a subsequent stage side, and a path selection circuit disposed between the first communication circuit and the second communication circuits. In the case that a slave connected on the subsequent stage side transmits a reply signal to the master responsive to a transmission signal transmitted from the master, the path selection circuit selects a path of the slave that transmits the reply signal, and outputs the reply signal from the selected path to the master.
摘要:
A printed circuit board allows detection of whether or not a part that is mounted on the printed circuit board and that is not electrically connected to the printed circuit board for conventional use has fallen off from the printed circuit board, and is provided with a number of conductive members that make contact with a number of connection portions, respectively, provided on the above-described mounted part and that are used for determining whether or not the above-described mounted part has fallen off from the above-described printed circuit board.
摘要:
A noise generation cause estimation device capable of easily estimating the cause of noise generation in a factory is connected for communication with a plurality of machines in the factory. The noise generation cause estimation device is provided with a noise information acquisition unit configured to acquire noise information generated in the machines, an operation information acquisition unit configured to continually acquire operation information of all the machines, and a determination unit configured to learn the relevance between the noise information and the operation information. The determination unit is provided with a state observation unit configured to observe the noise information and the operation information as state variables indicative of a current state of the environment and a learning unit configured to form a plurality of clusters including the state variables.