Trane Tracer MP580 User Manual

CNT-SVP01C-EN 109
Chapter 10
Network variable bindings
This chapter describes how to use network variable bindings in Tracer
MP580/581 controller applications.
Overview
The Comm5 communications protocol allows data to be shared between
devices (stand-alone or with a BAS) on a Comm5 network. This is called
peer-to-peer communication. As an example of peer-to-peer communica-
tion, two or more devices serving the same space share data, such as a
temperature reading, without having to pass the data through a BAS.
Network variables are used to share data between devices. The method
used to direct data from one device to another is called network variable
binding, or just binding. A network variable output from one device is
bound to a network variable input on another device. An output variable
from one device can be bound to input variables on many other devices.
Network variables
Each network variable is a standard type. This standard type is referred
to as a standard network variable type (SNVT, pronounced “snivet”). To
bind two variables together they must be the same network variable type.
For example, an output of type SNVT_temp_p can only be bound to an
input of type SNVT_temp_p. For more information about SNVTs, see the
LonMark™ Web site (www.lonmark.org). From that Web site you can
download the official list of SNVTs.
Binding network variables
IMPORTANT
Only Comm5 devices can use network variable binding. Devices on
other communications links do not have this capability.
BAS communications typically do not require the use of network variable
binding because a Tracer Summit BCU will automatically bind to the
proper data in a device. However, communications speed may be
increased between two devices by binding their data rather than having
the BAS read the information from one device and then broadcast it to
another.
Use the Rover service tool to create bindings. (See the Rover Operation
and Programming guide, EMTX-SVX01C-EN.)

Trane Tracer MP580 Specifications

General

Brand	Trane
Model	Tracer MP580
Category	Controller
Language	English

Summary

Chapter 1 Overview

Using Rover service tool

Learn to use the Rover service tool for device setup and configuration.

Accessing the Tracer MP580/581

Steps to connect and access the controller via the Rover service tool.

Chapter 2 Viewing status

Viewing the status of binary and analog outputs

Monitor the current state of hardware outputs on the controller.

Overriding binary and analog outputs

Manually change the value of binary and analog outputs.

Changing binary and analog variables

Modify the values of variables through the Displays tab.

Chapter 3 Configuring the Tracer MP580/581

Configuring inputs

Set up universal, binary, analog, and pulse inputs for the controller.

Configuring outputs

Configure binary and analog hardware outputs with descriptors and times.

Configuring variables

Set up binary and analog variables for data management and control.

Configuring user security

Set up security privileges for users to access controller functions.

Chapter 4 Using the Schedule application

Setting up the daily schedule

Define daily start and stop times for occupancy schedules.

Controlling the occupancy mode of the Tracer MP580/581

Manage controller occupancy modes from various sources.

Chapter 5 Using the Calculations application

Setting up a calculation

Define calculation name, input type, conversion factor, and units.

Chapter 6 Graphical programming overview

Opening the TGP editor

Access the Tracer Graphical Programming editor to create programs.

Blocks

Understand the fundamental programming blocks used in the TGP editor.

Keyboard short cuts

Learn keyboard shortcuts for efficient work with programs and blocks.

Chapter 7 Creating a graphical program

Editing program properties

Define program name, execution frequency, and description.

Connecting blocks using wired connections

Establish data flow between blocks using wired connections.

Chapter 8 Using the Occupancy and PID blocks

Using the Occupancy block

Utilize the Occupancy block for determining values and states of outputs.

Using the PID block

Implement proportional, integral, derivative control loops for modulating devices.

Chapter 9 Implementing a graphical program

Compiling a program

Check programs for errors and prepare them for download.

Downloading a program

Transfer compiled programs to the Tracer MP580/581 controller.

Chapter 10 Network variable bindings

Overview

Understand data sharing between devices on a Comm5 network.

Examples of network variable bindings

Explore common uses of bindings in Tracer MP580/581 applications.