Using the NetLinx Module to Program the ViewStat

It is important that the serial number array be the same length as the device array. If the serial number array happens to be shorter, the length will be set to that of the device array and the new members of the array will be set to the value 1. The two arrays are used to associate the ICSNet device number to the stat number of the thermostats (set locally through the thermostat's user interface)

Upon initialization, the VST module will retrieve the current settings of all of the thermostats on the network. This operation may take several seconds. During this time the NetLinx program will start receiving strings representing the states of all of the thermostat's controls. The above default temperature scale is Fahrenheit.

The ViewStat Communicating Thermostat is an enhanced version of the OPStat with the communication board built into the thermostat, advanced features and two displays. One display is for temperature, mode, limit settings, lock status, fan status, network communication and humidity. The second display is used for general text messaging for date, time, event status, and setup mode and user notifications.

The ViewStat can monitor remote temperature and humidity, has a flexible text mode setup and interface, and has the ability to lock local control of the thermostat.

Care must be taken when attaching to remote sensors in that the remotes can turn the thermostat into a humidity sensor that doesn't display the temperature in the main window. When acting as a humidity sensor, the temperature can be retrieved through the control interface only. The remote temperature is displayed in minor sections of the main window while the remote humidity inhabits the window center. When a remote sensor is attached, humidity changes do not generate a Change Of State message. Also, as a humidity sensor, the mode button will change from humidity to dehumidify and report accordingly over the control interface. To retrieve humidity, there is a conditional poll generated upon temperature events if the temperature event came from a humidity-supported device.

The VST_ZoneCnt is used to affect the wait period between successive commands being sent to the thermostats. The larger the VST_ZoneCnt value is, the longer the time delay between global commands becomes. The VST_ZoneCnt variable is associated with the serial number of a thermostat.

To install the ViewStat module, the developer must create an array of devices and an array of integers that stand for the serial number of the thermostat corresponding to the physical ICSNet device. Unless otherwise needed, the serial number of all thermostats should be set to '1', to allow the quickest response from the thermostat on global commands.

ViewStat also provides feedback from its local buttons: enter, scroll up, and scroll down. This allows the control system to track the menu navigation if desired.

The following diagram gives a graphical view of the interface between the NetLinx program and the NetLinx module.

NetLinx

VirtualNetLinx

Program

DeviceModule

ViewStat Controller

FIG. 39 Interface between the NetLinx program and the NetLinx module.

The ViewStat Model

The model will define a security system as consisting of the following components:

1.System: This refers the controller and all that it controls.

2.Zone: The system will consist of one or more ViewStat zones. A zone is nothing more than an area that can be controlled separate from other areas. Zones have their own temperature settings.

3.Thermostat: Each zone contains a thermostat. The thermostat is used for reading temperature and controlling when to turn on/off equipment as needed to maintain the desired temperature setting. Thermostats can control fans, heat, A/C., etc.

4.Setpoint: There are two types of setpoints: heat and cool. When the temperature reaches or falls below the heat setpoint the thermostat will turn the heat on (call for heat). When the temperature reaches or exceeds the cool setpoint the thermostat will turn the air conditioner on (call for air). These are also called comfort points. A user can keep the temperature within these points at all times by setting the setpoint values. For example, to maintain a temperature of 68-72 degrees the heat setpoint would be set to 68, the

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ViewStat Communicating Thermostat

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AMX manual ViewStat Model, Interface between the NetLinx program and the NetLinx module
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ViewStat specifications

AMX ViewStat is a revolutionary thermostat solution designed for both residential and commercial environments, providing robust control over heating, ventilation, and air conditioning (HVAC) systems. This intelligent device stands out for its user-friendly interface, advanced technology integration, and versatility in various settings.

One of the main features of AMX ViewStat is its intuitive touch screen interface, which enables users to easily navigate through settings and preferences. This 4.3-inch color display not only enhances usability but also allows for customization, offering users the ability to personalize the user experience according to their lifestyle and preferences. Whether adjusting temperature settings or scheduling heating/cooling cycles, the interface ensures a seamless interaction.

Among its key technological advancements is the integration of Wi-Fi connectivity. By connecting to a home or building's network, users can remotely access and control the thermostat through a smartphone, tablet, or computer. This level of control facilitates energy savings, as users can monitor and adjust settings from anywhere, leading to optimized usage and reduced utility bills.

AMX ViewStat is compatible with various HVAC systems, accommodating both conventional and heat pump setups. Its flexibility in adapting to different configurations makes it suitable for diverse applications, from single-family homes to large commercial spaces.

Moreover, the device incorporates advanced energy management features, granting users insights into their energy usage patterns. This data-driven approach allows users to make informed decisions about their energy consumption, ultimately promoting a more sustainable lifestyle.

In addition to its primary functions, AMX ViewStat integrates with other AMX control solutions, enabling a centralized command for home or office automation. When combined with AMX automation systems, users can achieve a fully integrated environment where lighting, security, and entertainment systems work in harmony with heating and cooling controls.

The construction of AMX ViewStat is robust yet stylish, designed to fit seamlessly into any decor. Available in multiple finishes, it adds a touch of elegance while ensuring durability and functionality.

In conclusion, AMX ViewStat is a state-of-the-art thermostat solution that offers a blend of advanced technology, ease of use, and energy efficiency. With features like remote connectivity, compatibility with various HVAC types, and integration with broader automation systems, it stands as a comprehensive solution for modern living and working environments.
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