Hach AquaTrend 51200, Instrument Manual

Page: 18 / 94

Page 18
Device Descriptions
51350-18 Aquatrend Interface Network.fm
Section 2
2.2 Device Descriptions
2.2.1 AquaTrend Interface Module
The two primary functions of the AquaTrend Interface are network
management and data display. Network management functions are required
only when performing modifications to the network such as adding or
removing devices. Multiple AquaTrend Interfaces (up to nine) can exist on a
network at any given time. Remote AquaTrend Interfaces serve to display data
from one or more sensors and access sensor menus.
• Master AquaTrend Interface – Acts as the main network data control
center for setup and operation of the network. The network can contain as
many as nine AquaTrend Interfaces but only one can be the Master
AquaTrend Interface. Only through the Master AquaTrend Interface can
network operations be performed.
• Remote AquaTrend Interface – Any AquaTrend Interface on a network
that is not a Portable or Master AquaTrend Interface. Remote AquaTrend
Interfaces can control and monitor all sensors on the network. Remote
AquaTrend Interfaces cannot perform network operations such as adding
and removing devices.
• Portable AquaTrend Interface – Mobile device designed for set up and
calibration of sensors already on the network. Portable AquaTrend
Interfaces can communicate with one sensor at a time and cannot
perform network operations. See
section 2.2.3 and 5.2 for more
information about the Portable AquaTrend Interface.
All AquaTrend Interfaces have the capability of functioning as a Master or
Remote however, only the Master AquaTrend Interface is allowed to perform
network management functions. All AquaTrend Interfaces are shipped from
the factory in an undefined (neither Master or Remote) state. When an
individual AquaTrend Interface is defined as the Master, any other AquaTrend
Interface on the network must be defined as a Remote. An AquaTrend
Interface can be redefined (i.e., Remote to Master or Master to Remote);
however, existing network connection information will be lost. After changing a
Remote to a Master AquaTrend Interface, you must rebuild the network and
reestablish communications between devices.
2.2.2 AquaTrend/SOM with Integrated Signal Output Module
The AquaTrend/SOM Module is a combined AquaTrend Interface and SOM in
one enclosure. See
section 2.2.1 for information concerning the functions and
options for the AquaTrend Interface portion of the combined AquaTrend/SOM
and
section 2.2.5 for more details about the SOM.