Integration Guide - BACnet and Modbus RTU …

1 SAFETY WARNINGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicingof heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge andtraining. Improperly installed, adjusted or altered equipment by an unqualified person could result in death orserious injury. When working on the equipment, observe all precautions in the literature and on the tags,stickers, and labels that are attached to the 2011 BAS-SVP01G-ENIntegration GuideBACnet and Modbus RTUC ommunication Interfacesfor Trane Chillers with Tracer AdaptiView Control 2011 Trane All rights reservedBAS-SVP01G-ENCopyright 2011 Trane All rights reservedThis document and the information in it are the property of Trane and may not be usedor reproduced in whole or in part, without the written permission of Trane. Trane reservesthe right to revise this publication at any time and to make changes to its content withoutobligation to notify any person of such revision or and its logo are trademarks of Trane in the United States and other countries.

2 Alltrademarks referenced in this document are the trademarks of their respective , Cautions, and NoticesWarnings, cautions, and notices are provided in appropriate places throughout thisdocument: WARNING:Indicates a potentially hazardous situation which, if not avoided,could result in death or serious injury. CAUTION:Indicates a potentially hazardous situation which, if not avoided,could result in minor or moderate injury. It could also be used to alert againstunsafe :Indicates a situation that could result in equipment or property-damage-only of 5 BACnet 5 BACnet Testing Laboratory (BTL) 5 Modbus RTU 5 Tracer UC800 Controller Rotary 7 Communication 7 Rotary 7 LED Description and 7 Equivalent Data Points Reference List for CenTraVac Chillers: BACnet , 9 Equivalent Data Points Reference List for Duplex CenTraVac Chillers: BACnet , Modbus 12 Equivalent Data Points Reference List for Tracer AdaptiView Panel Upgrade: BACnet , Modbus 16 BACnet Data Points and Configuration Property 19 BACnet Protocol Implementation Conformance Statement (PICS).

3 19 Standardized Device 19 Interoperability Building 19 Object 20 Protocol: Baud Rate, Device ID, and Supported Character 22 Baud 22 Device 22 Character 22 Measurements, Units, and Conversion Factors CenTraVac and Duplex .22 CenTraVac Object Data Points and 22 Device 22 Notification Class 23 Read/Write Values (Sorted by Object Type and Instance).. 23 Read-only Values (Sorted by Object Type and Instance).. 23 Diagnostics: Inputs with Alarming Capabilities (Sorted by Instance) .. 25 Duplex CenTraVac Object Data Points and 29 Device 29 Notification Class 29 Read/Write Values (Sorted by Object Type and Instance).. 29 Read-only Values (Sorted by Object Type and Instance).. 30 Diagnostics: Inputs with Alarming Capabilities (Sorted by Instance) .. 33 Tracer AdaptiView Panel Upgrade Object Data Points and Configurations39 Device 39 Notification Class 394 BAS-SVP01G-ENRead/Write Values (Sorted by Object Type and Instance).. 39 Read-only Values (Sorted by Object Type and Instance).

4 39 Diagnostics: Inputs with Alarming Capabilities (Sorted by).. 41 Modbus RTU Data Points and Configuration Property 47 Protocol: Baud Rate, Parity, and Supported Character 47 Baud 47 Stop 47 CenTraVac Data Points Descriptions and 47 Holding Registers Read/Write (Sorted by Register).. 47 Input Registers Read Only (Sorted by Register).. 47 Determining Input Register 50 Duplex CenTraVac Data Points Descriptions and 50 Holding Registers Read/Write (Sorted by Register).. 50 Input Registers Read Only (Sorted by Register).. 51 Tracer AdaptiView Panel Upgrade Data Points Descriptions and 54 Holding Registers Read/Write (Sorted by Register).. 54 Input Registers Read Only (Sorted by Register).. 55 Determining Input Register 57 Duplex CenTraVac Chillers and CenTraVac Chillers (For Software Part # ) .. 57 CenTraVac Chillers (For Software Part # or Higher) .. 62 Tracer AdaptiView Panel Upgrade (For Software Part # orHigher) .. 67 Additional 74 BAS-SVP01G-EN5 OverviewInteroperability provides the capability for building control systems or devices from multiplevendors to communicate with each other through open, standard has adopted open, standard interoperable protocols to give customers the flexibility tochoose the best possible vendor for their building subsystems and easily incorporate Traneproducts into legacy systems in existing Guide will provide: A brief overview of two of these protocols supported by Trane BACnet and Modbus Remote Terminal Unit (RTU) An equivalent listing of data points for both protocols for CenTraVac and Duplex CenTraVacchillers BACnet / Modbus RTU addressing BACnet / Modbus RTU data points and configuration property definitions Additional resources A glossary of termsNote:Usersof this Guide should have basic knowledge of BACnet / Modbus protocols.

5 For moredetailed information about these protocols, visit these company s web sites listed under Additional Resources, p. ProtocolThe Building automation and Control Network ( BACnet and ANSI/ASHRAE Standard 135-2004)protocol is a standard that allows building automation systems or components from differentmanufacturers to share information and control functions . BACnet provides building owners thecapability to connect various types of building control systems or subsystems together for a varietyof reasons. In addition, multiple vendors can use this protocol to share information for monitoringand supervisory control between systems and devices in a multi-vendor interconnected BACnet protocol identifies standard objects (data points) called BACnet objects. Each objecthas a defined list of properties that provide information about that object. BACnet also defines anumber of standard application services that are used to access data and manipulate these objectsand provides a client/server communication between Testing Laboratory (BTL) CertificationAll Tracer UC800 controllers are designed to support BACnet communication protocol.

6 Inaddition, some particular revisions of the UC800 firmware have been tested and have achieved BTLcertification by an official BACnet testing laboratory. For more details, refer to the BTL website RTU ProtocolModicon Communication Bus ( Modbus ) is an application layer-messaging protocol that, likeBACnet, provides client/server communication between devices over a variety of networks. Duringcommunications on a Modbus RTU network, the protocol determines how each controller willknow its device address, recognize a message addressed to its device, determine what action totake, and extract any data or other information contained in the communicate using a master/slave technique, whereby, only one device (master) caninitiate transactions (queries). Other devices (slaves) respond by supplying the requested data tothe master or by taking the action requested in the master can address individual slaves or it can initiate a broadcast message to all slaves.

7 In turn,the slaves respond to queries that are addressed to them individually or Modbus RTU protocol establishes the format for the master s query by placing into it the deviceaddress, a function code defining the requested action, any data to be sent, and an UC800 Controller Rotary SwitchesThis section provides information about the Tracer UC800 controller rotary switches and InterfacesThe UC800 supports the communication interfaces listed below. There is one set of terminations(link) for BACnet and Modbus . LonTalk and Comm 4 communication interfaces connect to theIPC3 bus which is the MBUS connection. BACnet MS/TP Modbus Slave LonTalk using LCI-C (from the IPC3 bus)Note:Referto Additional Resources, p. 73. Comm 4 using TCI (from the IPC3 bus)Rotary SwitchesThere are three rotary switches on the front of the UC800 (seeFigure 1, p. 8). Use these switchesto define a three-digit address when the UC800 is installed in a BACnet or Modbus RTU system (forexample, 107, 127, and so on).

8 Note:Valid MAC addresses are 001 to 127 for BACnet and 001 to 247 for Modbus RTU. Foradditional information about setting higher addresses, refer to Device ID, p. Description and OperationThere are 10 LEDs on the front of the 1shows the locations of each LED and adescription of its behavior in specific UC800 Controller Rotary SwitchesFigure 1. LED locationsMarquee LED Shows solid green when the UC800 ispoweredand operating normally. Shows solid red when the UC800 is powered, but representslowpoweror amalfunction. Blinks red when , MBUS, IMC TheTXLED blinks green at the data transfer rate when the UC800 transfers data to otherdevices on the link. TheRXLED blinks yellow at the data transfer rate when the UC800 receives data from otherdevices on the Link TheLINKLED shows solid green if the Ethernet link is connected and communicating. TheACTLED blinks yellow at the data transfer rate when data flow is active on the Shows solid green when pressed.

9 (For more details, refer to the document,Installation,Operation,andMaint enanceGuideforCVHE,CVHF,andCVHGW ater-cooledCenTraVacChillerswith Tracer AdaptiView Control listed in the section, Additional Resources, p. 73.)SERVICE TOOLSERVICEIMCMBUSLINKRXTXACTLINKUC800 MBUSLINK+24 VDCIMC1 IMCUSBADDRESS0123456789x10123456789x1001 23456789x100 SERVICEIMCMBUSLINKRXTXACTLINKADDRESS0123 456789x10123456789x100123456789x100 Example of before and after setting addressesMarquee LEDBAS-SVP01G-EN9 Equivalent Data Points Reference List for CenTraVacChillers: BACnet , Modbus RTUThe following table provides a quick reference to equivalent data point objects names forCenTraVac chillers when using either BACnet or Modbus RTU communications. This table is sortedalphabetically by data point :The information contained in the following table are for versions and higher. ,refertoBACnetandModbusRTUC ommunicationsInterfacesforTraneChillersw ith Tracer AdaptiView Control Integration Guide (BAS-SVP01B-EN)

10 Data Point Object NameBACnet ObjectModbus RTU RegisterActive Base Loading SetpointAI330006 Active Base Loading Setpoint SourceMI730032 Active Chilled Water Setpoint SourceMI430029 Active Cool/Heat Setpoint TemperatureAI730010 Active Current Limit SetpointAI230005 Active Current Limit Setpoint SourceMI530030 Active Hot Water Setpoint SourceMI630031 AFD Average Input CurrentAI7130112 AFD Input Current L1AI7230114 AFD Input Current L2AI7330115 AFD Input Current L3AI7430116 AFD Input FrequencyAI7530111 AFD Inverter Base TemperatureAI7830118 AFD Output PowerAI8030120 AFD Output VoltageAI7630113 AFD Rectifier Base TemperatureAI7930119 AFD Transistor TempAI7030110 Alarm PresentBI1030047 Approx Cond Water FlowAI1430021 Approx Evap Water FlowAI1230017 Approx Unit Heating PowerNA30009 Average Line CurrentAI6130004 Average Line Current AmpsAI5730097 BAS Base Loading EnableBV140007 BAS Base Loading SetpointAV440006 BAS Chilled Water SetpointAV140003 BAS Chiller Auto Stop CommandMV140001 BAS Chiller Mode CommandMV240002 BAS Current Limit SetpointAV240004 BAS Diagnostic ResetBV240008 BAS Hot Water SetpointAV340005 Base LoadingBI930046 Calculated Chiller CapacityAI530008 Carbon Tank TempAI3930071 Chiller Control ModeMI230027 Chiller RunningBI130003 Chiller Running StatusMI130026 Compressor Refrigerant Discharge Temperature AI3630065 Compressor Running MI1130055 Compressor Running TimeAI4930088, 30089 Compressor StartsAI4830086, 30087 Cond Differential Wtr PressAI1530022 Cond Entering Water TempAI1030013 Cond Leaving Water TempAI113001410 BAS-SVP01G-ENEquivalent Data Points Reference List for CenTraVac Chillers.