| 摘要 |
<p>PURPOSE:To back up a device by another display information part even if a meter display part is in fault and to display its meter information by providing a specific detecting means and a specific display control means respectively. CONSTITUTION:In a meter node NM, various meter display devices 5 are connected to the CPU 4C of a node controller CM and the device 5 displays various pieces of meter information from the CPU 4C. When one of various display device 5 at this meter node NM is in fault and its meter information can not be displayed, the state is detected by the node controller CM of a meter node (detecting means and display control means) and a command for the transmission of the meter information which can not be displayed to a CRT display node NC is sent out to a transmission line B. According to the command, the meter information is displayed on a CRT 1 at the CRT display node NC.</p> |
