| 摘要 |
A device for measuring a physical quantity in a wired electrical network, such as a local area network (LAN) or Ethernet, has a unique network address and a first interface connected to a wired network and configured to receive and transmit data. To reduce costs for materials and the complexity of cabling, the device further includes a switch for connection to an additional device and for forwarding data, preferably in the form of data packets, to the additional device. A system includes several such devices, arranged in a chain or ring topology, and can forward data to other such devices based on the device addresses. The disclosed device configuration eliminates expensive and difficult to install switches frequently required in the center of a star configuration.
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