Abstract: It is to realize a network management system which can suppress to a minimum a time during which it is impossible to make a communication when a trouble occurs in any of field wireless management stations formed to be redundant. In a network management system in which field wireless management stations 11, 12 having gateway functions and system management functions incorporated are redundantly connected together, the field wireless management stations 11, 12 include at least switch modules 11b, 12b, and the plurality of field wireless management stations 11, 12 are connected to each other through a synchronizing cable 30 and synchronizing connectors CNa, CNb provided in the synchronizing cable 30, and switches SWm are connected in series to a synchronizing system which connects the switch modules 11b, 12b to each other to turn on and off the system.

Abstract: A path setting apparatus sets wireless paths fixed by a wireless network formed by a wireless connection device and a plurality of wireless devices. The path setting apparatus may include an editing unit that edits and sets positions of the wireless connection device and the wireless devices and wireless paths between the wireless connection device and the wireless devices and between the wireless devices, and edits and sets communication timings of the wireless connection device and the wireless devices where the wireless paths are set, based on an input instruction, a storage unit that stores power performance information of the wireless devices, and calculating unit that calculates at least one of transmission delays between the wireless devices and the wireless connection device, transmission delays between the wireless devices, consumption power of the wireless devices, and battery life of batteries used as power supplies of the wireless devices.

Abstract: It is to realize a network management system which can suppress to a minimum a time during which it is impossible to make a communication when a trouble occurs in any of field wireless management stations formed to be redundant. In a network management system in which field wireless management stations 11, 12 having gateway functions and system management functions incorporated are redundantly connected together, the field wireless management stations 11, 12 include at least switch modules 11b, 12b, and the plurality of field wireless management stations 11, 12 are connected to each other through a synchronizing cable 30 and synchronizing connectors CNa, CNb provided in the synchronizing cable 30, and switches SWm are connected in series to a synchronizing system which connects the switch modules 11b, 12b to each other to turn on and off the system.

Abstract: A path setting apparatus sets wireless paths fixed by a wireless network formed by a wireless connection device and a plurality of wireless devices. The path setting apparatus may include an editing unit that edits and sets positions of the wireless connection device and the wireless devices and wireless paths between the wireless connection device and the wireless devices and between the wireless devices, and edits and sets communication timings of the wireless connection device and the wireless devices where the wireless paths are set, based on an input instruction, a storage unit that stores power performance information of the wireless devices, and calculating unit that calculates at least one of transmission delays between the wireless devices and the wireless connection device, transmission delays between the wireless devices, consumption power of the wireless devices, and battery life of batteries used as power supplies of the wireless devices.