Understanding bindings

A heartbeated network variable has a timer associated with it. When the timer expires, the heartbeated network variable is sent regardless of change of state or delta value of that network variable. Heartbeating functions both as an indicator of value “freshness” and an indicator of the quality of communications between two devices. From the perspective of a terminal device, value freshness is most important. From the perspective of the building automation system, communication quality is most

Node

Nodes can be any LonTalk-compatible devices, such as appliances, switches, sensors, Tracer MP581s, and Tracer Summit BMTX BCUs, that are connected to a Trane LonTalk network. For the purposes of a UUKL- compliant system, a node is either a Tracer MP581 or a Tracer Summit

BMTX BCU.

Network Address

Nodes have network addresses, which are used to send messages and to determine if messages are destined for them. A node’s network address consists of three components:

•The domain to which the node belongs

•The subnet to which the node belongs within the domain

•The node number within the subnet

Domain, subnet, and node number are used to determine a custom bound variable’s origin and destination(s).

Binding types

The custom bindings necessary to use in a smoke control system fall into the following two categories:

•Subnet/node: A one-to-one binding in which one output NV is bound to one input NV.

•Group: A one-to-many binding in which one output NV is bound to two or more input NVs.

Basic binding shapes and the hub/target system

Aone-to-one binding is always a subnet/node binding type. A binding with a fan-out shape is always a group binding type. A binding with a fan- in shape is always made up of several subnet/node bindings. Fan-in and fan-out bindings can have an unlimited number of members. Custom fan- in bindings are not necessary for the smoke control system. The target network variable will change value depending on which output network variable was last sent. There is no way to determine the origin of the information.

Echelon uses a hub/target system to describe the parts of a binding. As the term implies, there can be only one hub in a binding. The hub is the focal point of either a fan-out or fan-in binding. The targets are at the other end of the hub. It is important to remember that the hub and

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BAS-APG001-EN, Engineered Smoke Control System for Tracer Summit specifications

The Trane Engineered Smoke Control System is an advanced solution designed to enhance safety and efficiency in buildings by effectively managing smoke during emergency situations. Specifically tailored for integration with the Tracer Summit Building Automation System, the Trane Engineered Smoke Control System (BAS-APG001-EN) combines cutting-edge technologies with user-friendly features, empowering facility managers to maintain optimal air quality and ensure occupant safety.

One of the standout features of the system is its programmable logic capabilities, which allow for customized smoke management strategies based on building layout and operations. This flexibility ensures that smoke is effectively controlled, providing clear egress paths for occupants while maintaining a safe environment for emergency responders. The system is engineered to operate seamlessly with other building systems, including HVAC and fire alarm systems, enabling a cohesive response during smoke events.

The Trane Engineered Smoke Control System employs sophisticated detection technologies that monitor air quality and detect smoke in real-time. This proactive approach facilitates early intervention, allowing for rapid activation of smoke control measures. Additionally, the integration of variable speed fans ensures that smoke is moved efficiently out of critical areas, reducing the risk of smoke inhalation for building occupants.

One of the key characteristics of this system is its ability to provide reliable, redundant operation. With engineered backup systems in place, the reliability of smoke control measures is significantly enhanced, ensuring that they will function correctly even in the event of a power failure. This is especially critical in high-rise buildings or complex structures, where smoke control is vital to occupant safety.

User interface features included in the Tracer Summit system offer intuitive controls and monitoring capabilities, simplifying the management of smoke control operations. Facility managers can easily view system status, receive alerts, and make necessary adjustments through the user-friendly dashboard, enhancing operational efficiency.

The Trane Engineered Smoke Control System stands out as a premier solution for smoke management in contemporary building designs. By integrating sophisticated detection technologies, programmable logic, and reliable operation, it provides an essential layer of safety in creating environments that prioritize occupant protection. As buildings continue to evolve, Trane’s commitment to innovation ensures that its Engineered Smoke Control System remains a key component in modern fire safety infrastructure.
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