Page 18Device Descriptions 51350-18 Aquatrend Interface Network.fmSection 22.2 Device Descriptions2.2.1 AquaTrend Interface ModuleThe two primary functions of the AquaTrend Interface are networkmanagement and data display. Network management functions are requiredonly when performing modifications to the network such as adding orremoving devices. Multiple AquaTrend Interfaces (up to nine) can exist on anetwork at any given time. Remote AquaTrend Interfaces serve to display datafrom one or more sensors and access sensor menus.• Master AquaTrend Interface – Acts as the main network data controlcenter for setup and operation of the network. The network can contain asmany as nine AquaTrend Interfaces but only one can be the MasterAquaTrend Interface. Only through the Master AquaTrend Interface cannetwork operations be performed.• Remote AquaTrend Interface – Any AquaTrend Interface on a networkthat is not a Portable or Master AquaTrend Interface. Remote AquaTrendInterfaces can control and monitor all sensors on the network. RemoteAquaTrend Interfaces cannot perform network operations such as addingand removing devices.• Portable AquaTrend Interface – Mobile device designed for set up andcalibration of sensors already on the network. Portable AquaTrendInterfaces can communicate with one sensor at a time and cannotperform network operations. See section 2.2.3 and 5.2 for moreinformation about the Portable AquaTrend Interface.All AquaTrend Interfaces have the capability of functioning as a Master orRemote however, only the Master AquaTrend Interface is allowed to performnetwork management functions. All AquaTrend Interfaces are shipped fromthe factory in an undefined (neither Master or Remote) state. When anindividual AquaTrend Interface is defined as the Master, any other AquaTrendInterface on the network must be defined as a Remote. An AquaTrendInterface can be redefined (i.e., Remote to Master or Master to Remote);however, existing network connection information will be lost. After changing aRemote to a Master AquaTrend Interface, you must rebuild the network andreestablish communications between devices.2.2.2 AquaTrend/SOM with Integrated Signal Output ModuleThe AquaTrend/SOM Module is a combined AquaTrend Interface and SOM inone enclosure. See section 2.2.1 for information concerning the functions andoptions for the AquaTrend Interface portion of the combined AquaTrend/SOMand section 2.2.5 for more details about the SOM.