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VTR8300 Series
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Schneider Electric VTR8300 Series, VT8300 Series Selection Guide

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VTR8300 / VT8300 Series BACnet Integration
Terminal Equipment Controller
Commercial and Lodging HVAC Applications
BACnet
CONTROLLER
2
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
VTR8300 AND VT8300 SERIES PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT (PICS)
Vendor Name: Viconics Technologies
Supported BACnet
all requirements for designation as an Application Specific Controller (B-ASC). The BACnet controller supports the following BACnet Interoperability Building Blocks (BIBBs).
Application Service Designation
Data Sharing – Read Property - B DS-RP-B
Data Sharing – Read Property Multiple - B DS-RPM-B
Data Sharing – Write Property - B DS-WP-B
Data Sharing - Write Property Multiple Service - B DS-WPM-B
Device Management - Time Synchronization - B DM-TS-B
Device Management - Device Communication Control - B DM-DCC-B
Device Management – Dynamic Device Binding - B DM-DDB-B
Device Management – Dynamic Object Binding - B DM-DOB-B
®
Services: The BACnet® communicating controller meets
Note: The controller does not support segmented requests or responses.
VTR8300/VT8300
VC3000 Relay Pack
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
BACnet® Integration Manual
DEVICE OBJECTS TABLE
VTR8300 / VT8300 Series
3
Object Name
VTR83xxA5x00B
VT83xxU5x00B
Type and
Instance
Device
Object Property Controller Parameter
Object_Identifier Property 75 (R,W)
Object_Name Property 77 (R,W)
Model Name Property 70 (R)
Firmware Revision Property 44 (R)
Protocol Version Property 98 (R)
Protocol Revision Property 139 (R)
Max ADPU Length Property 62 (R)
ADPU Timeout Property 10 (R)
Application­Software-Version
Property 12 (R)
Max_Master (R,W)
Unique ID number of a device on a network
Unique name of a device on a network
Controller model number
Current BACnet
Current BACnet
®
firmware revision used by controller
®
firmware protocol version
Default is Version 1
®
Current BACnet
firmware protocol revision
Default is Version 2
Maximum ADPU Length accepted Default is 480
ADPU timeout value Default is 3000 ms
Controller base application software version Default is based on current released version
Maximum master devices allowed to be part of network.
0 to 127, default is 127
Description Property 28 (R,W)
Location Property 58 (R,W)
Local Date Property 56 (R)
Local Time Property 57 (R)
String of printable characters (Same as "Long Screen Message" CSV2)
String of printable characters (Same as "Short Screen Message" CSV1)
Indicates date to best of device knowledge
Indicated time of day best of the device knowledge
4
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
ANALOG OBJECT PROPERTIES
Object Type
Read/Write Settings
Input
AI
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read / Write Read / Write Read / Write
Read / Write* Read / Write Read / Write
Output
AO
Values
AV
Object Property Controller Parameter
Event State Property 36
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Out of Service Property 81
Present Value Property 85
Indicates if object has an active event state associated with it
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
Indicates whether (TRUE/FALSE) the physical input object represents is not in service
Contains values of all properties specified
N/A Read Only Read Only
Read Only Read Only Read Only
N/A Read Only Read / Write
Read Only Read Only Read Only
Read Only Read Only Read Only
N/A Read Only
N/A Read Only N/A
N/A
Priority Array Property 87
Reliability Property 103
Relinquish Default
†
Property 104
Status Flags Property 111
Units Property 177
Hight Limit Property 45
Low Limit Property 59
N/A = Not Applicable, property not used for objects of that type
* The Present_Value is only writeable when Out_Of_Service is TRUE.
† Relinquish default is Read Only for AV100+
Read-only array of prioritized values
Indicates if Present_Value is "reliable"
Default value used for Present_Value when values in Priority_Array have a NULL value
Represents flags that indicate general health of life safety point object
Indicates measurement units of Present_Value
Specifies a limit Present_Value must exceed before an event is generated
Specifies a limit Present_Value must fall below before an event is generated
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
BACnet® Integration Manual
BINARY OBJECT PROPERTIES
Object Type
Read/Write Settings
Input
BI
Output
BO
VTR8300 / VT8300 Series
Object Property Controller Parameter
Values
BV
5
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read Only Read Only Read Only
Read / Write Read / Write Read / Write
Read Only Read / Write N/A
Read / Write Read / Write Read / Write
Active Text Property 4
Event State Property 36
Inactive Text Property 46
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Out of Service Property 81
Polarity Property 84
Present Value Property 85
Characterizes intended effect of the ACTIVE state of Present_Value property
Indicates if object has an active event state associated with it
Characterizes intended effect of INACTIVE state of Present_Value property
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
Indicates whether (TRUE/FALSE) physical input object represents is not in service
Indicates relationship between physical state of input and Present_Value
Contains values of all properties specified
Read Only Read Only Read Only
N/A Read Only Read Only
Read Only Read Only Read Only
Priority Array Property 87
Relinquish Default Property 104
Status Flags Property 111
N/A = Not Applicable, property not used for objects of that type
Read-only array of prioritized values
Default value to be used for Present_Value when values in Priority_Array have a NULL value
Represents flags that indicate general health of life safety point object
6
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
MULTISTATE OBJECT PROPERTIES
Object Type
Read/Write Settings
Inputs
MSI
Read Only Read Only
Read Only Read Only
Read Only Read Only
Read Only Read Only
Read Only Read Only
Read / Write Read / Write
Values
MV
Object Property Controller Parameter
Event State Property 36
Number of States Property 74
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Out of Service Property 81
Indicates if object has an active event state associated with it
Defines number of states Present_Value may have
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
Indicates whether (TRUE/FALSE) physical input object represents is not in service
Read / Write* Read / Write
N/A Read Only
N/A Read / Write
Read Only Read Only
Read Only Read Only
Present Value Property 85
Priority Array Property 87
Relinquish Default Property 104
State Text Property 110
Status Flags Property 111
N/A = Not Applicable, property not used for objects of that type
*The Present_Value is only writeable when Out_Of_Service is TRUE.
Contains values of all properties specified
Indicates relationship between physical state of input and Present_Value
Default value used for Present_Value when values in Priority_Array have a NULL value
Represents descriptions of all possible states of Present_Value
Represents flags that indicate general health of life safety point object
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
BACnet® Integration Manual
CSV PROPERTIES
Object Property Read/Write Controller Parameter
VTR8300 / VT8300 Series
7
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Present Value Property 85
Status Flags Property 111
Event State Property 36
Read Only Unique ID number of an object on a network
Read Only Unique name of an object on a network
Read Only Indicates membership in a particular object type class
Read / Write Contains values of all properties specified
Read Only
Read Only
Represents flags that indicate general health of life safety point object
Indicates object has an active event state associated with it
PG OBJECT PROPERTIES
Read/Write Object Property Controller Parameter
String of printable characters whose content is not restricted. Contains the LUA program script (max size = 480 bytes)
Describes the reason why a program has been halted Text is also displayed in the HMI debug log
Read / Write
Read Only
Description Property 28
Description Of Halt Property 29
Read Only
Read Only
Read Only
Read Only
Read Only
Write Only
Read Only
Read Only
Read Only
Instance Of Property 48
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Out Of Service Property 81
Program Change Property 90
Program State Property 92
Reason For Halt Property 100
Status Flags Property 111
Local name of the application program being executed by this process
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
Indicates whether (TRUE/FALSE) the process this object represents is not in service
Used to request changes to the operating state of the program. Writing to property affects all 10 PG objects
Current logical state of all 10 PG objects executing application programs
If program halts, this property reflects the reason for halt for all 10 PG objects
Represents flags that indicate general health of life safety point object
8
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
CAL OBJECT PROPERTIES
Read/Write Object Property Controller Parameter
Read / Write
Read Only
Read Only
Read Only
Read Only
Date List Property 23
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Present Value Property 85
List of calender entries.
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
This property is TRUE when current date matches an entry.
SCH OBJECT PROPERTIES
Read/Write Object Property Controller Parameter
Read Only
Effective Period Property 32
Range of dates within which the Schedule object is active. All dates are in range, so always Effective
Read / Write
Read Only
Read Only
Read Only
Read / Write
Read / Write
Read Only
Read Only
Read / Write
Exception Schedule Property 38
Object Identifier Property 75
Object Name Property 77
Object Type Property 79
Present Value Property 85
Out Of Service Property 81
Reliability Property 103
Status Flags Property 111
Weekly Schedule Property 123
Sequence of schedule actions that takes precedence over normal behavior on a specific day or days. By default, this property refers to the calendar.
Unique ID number of an object on a network
Unique name of an object on a network
Indicates membership in a particular object type class
Contains the current value of the schedule (0:unoccupied, 1:occupied)
Only writeable when Out Of Service is TRUE
Indicates whether (TRUE/FALSE) the internal calculations of the schedule object are used to determine the value of the Present Value property
Indicates if Present Value is "reliable"
Represents flags that indicate general health of life safety point object
7 elements that describe the sequence of schedule actions for each day of the week.
Read Only
Schedule Default Property 174
Default value to be used when no other scheduled value is in effect. Always Unoccupied
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
BACnet® Integration Manual
VTR8300 AND VT8300 SERIES
VTR8300 / VT8300 Series
9
Object Name
User HMI AV 2 √ √ √ √
Low Backlight AV 3 √ √ √ √
Night Backlight AV 4 √ √ √ √
Purge Sample Period AV 5 √ √ √ √
Purge Open AV 6 √ √ √ √
Calibrate Temperature Sensor AV 7 √ √ √ √
Calibrate Humidity Sensor AV 8
COM Address AV 10 √ √ √ √
ZigBee PAN ID AV 11 √ √ √ √
ZigBee channel AV 12
ZigBee Short Address AV 13 √ √ √ √
ZigBee IEEE Address AV 14 √ √ √ √
Get from COM AV 15 √ √ √ √
BACnet Stack Poll Rate AV 16 √ √ √ √
Lua Parameter A AV 25 √ √
Lua Parameter B AV 26 √ √
Lua Parameter C AV 27 √ √
Lua Parameter D AV 28
Lua Parameter E AV 29 √ √
Lua Parameter F AV 30 √ √
Occupied Heat Setpoint AV 39 √ √ √ √
Occupied Cool Setpoint AV 40 √ √ √ √
Standby Heat Setpoint AV 41 √ √ √ √
Standby Cool Setpoint AV 42 √ √ √ √
Unoccupied Heat Setpoint AV 43 √ √ √ √
Unoccupied Cool Setpoint AV 44 √ √ √ √
Default Heating Setpoint AV 45 √ √ √ √
Standby Differential AV 46 √ √ √ √
Number of Pipes AV 52 √ √ √ √
Main Password AV 56 √ √ √ √
User Password AV 57 √ √ √ √
Heating Setpoint Limit AV 58 √ √ √ √
Cooling Setpoint Limit AV 59 √ √ √ √
Temporary Occupancy Time AV 62 √ √ √ √
Minimum Deadband AV 63 √ √ √ √
Proportional Band AV 65
Standby Time AV 67
Unoccupied Time AV 68 √ √ √ √
Type and
Instance
VTR8300A5x00B
VTR8350A5x00B
VT8300U5x00B
√ √
√ √ √ √
√ √
√ √ √ √
√ √ √ √
Object Name
VT8350U5x00B
RH Setpoint AV 71 √ √
Dehumidification Hysterisys AV 72 √ √
Dehumidification Max Cooling AV 73 √ √
Heating CPH AV 84
Cooling CPH AV 85 √ √
Heating Demand Limit AV 88 √ √ √ √
Cooling Demand Limit AV 89 √ √ √ √
Floating Time AV 90 √ √
Room Temperature AV 100 √ √ √ √
Outdoor Temperature AV 101 √ √ √ √
Room Humidity AV 103 √ √
Supply Temperature AV 102 √ √ √ √
UI 19 Changeover AV 104
Remote Sensor Temperature AV 105 √ √
PI Heating Demand AO 21 √ √ √ √
PI Cooling Demand AO 22 √ √ √ √
Pulsed Heating Demand AO 90 √ √ √ √
UO 11 Analog Output AO 123 √ √
UO 12 Analog Output AO 124
UO 9 Analog Output AO 125 √ √
UO 10 Analog Output AO 126 √ √
Thermistor AI 1 √ √ √ √
Light Sensor Level AI 2
Thermistor Self Heating AI 3 √ √ √ √
Relative Humidity Raw Value AI 4 √ √ √ √
Rem. Sensor AI 5 √ √
UI 23 Raw value AI 7 √ √
UI 22 Raw Value AI 8 √ √
UI 19 Raw value AI 31 √ √
Wireless Zone 1 IEEE Address AI 210 √ √
Wireless Zone 2 IEEE Address AI 220 √ √
Wireless Zone 3 IEEE Address AI 230
Wireless Zone 4 IEEE Address AI 240 √ √
Wireless Zone 5 IEEE Address AI 250 √ √
Wireless Zone 6 IEEE Address AI 260
Wireless Zone 7 IEEE Address AI 270 √ √
Wireless Zone 8 IEEE Address AI 280 √ √
Wireless Zone 9 IEEE Address AI 290
Type and
Instance
VTR8300A5x00B
√ √ √ √
√ √ √ √
√ √ √ √
VTR8350A5x00B
VT8300U5x00B
VT8350U5x00B
√ √
√ √
√ √
√ √
10
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
VTR8300 AND VT8300 SERIES
Object Name
Wireless Zone 10 IEEE Address AI 300 √ √
Door Contact Status BV 1 √ √ √ √
Door Contact Installed BV 2
Window Contact Status BV 3 √ √ √ √
Window Contact Installed BV 4 √ √ √ √
Low Battery Alarm BV 5
Force High Backlight BV 6 √ √ √ √
Display Long Screen Message BV 7 √ √ √ √
Local Motion BV 32 √ √ √ √
Window Alarm BV 35 √ √ √ √
Filter Alarm BV 36 √ √ √ √
Service Alarm BV 37 √ √ √ √
Dehumidification Status BV 38 √ √
Smart Recovery Status BV 40 √ √
ZigBee PIR Sensor Installed BV 200 √ √
ZigBee Sensor Motion BV 201 √ √
UO 9 Binary Output BO 93 √ √ √ √
UO 10 Binary Output BO 94 √ √ √ √
High Speed Fan Output BO 95
Medium Speed Fan Output BO 96 √ √ √ √
Low Speed Fan Output BO 97 √ √ √ √
BO8 Auxiliary Output BO 98
UO 11 Binary Output BO 101
UO 12 Binary Output BO 102 √ √
BI 1 / UI 16 Status* BI 29 √ √ √ √
BI 2 / UI 17 Status* BI 30 √ √ √ √
RUI 1 / UI 19 Status* BI 91 √ √ √ √
RBI 2 Status BI 92 √ √ √ √
Short Screen Message CSV 1 √ √ √ √
Long Screen Message CSV 2 √ √ √ √
Long message background color MV 1 √ √ √ √
HMI Colour MV 2 √ √ √ √
Main Display MV 3 √ √ √ √
Display Language MV 4 √ √ √ √
Time Format MV 5
Network Units MV 6 √ √ √ √
Network Language MV 7 √ √ √ √
BACnet Baud Rate MV 8 √ √ √ √
* Entry before slash refers to VTR83XX models, entry after slash refers to VT83XX models
Type and
Instance
VTR8300A5x00B
VTR8350A5x00B
VT8300U5x00B
√ √ √ √
√ √ √ √
√ √ √ √
√ √
√ √
√ √
Object Name
VT8350U5x00B
No Activity Sleep Mode MV 9 √ √ √ √
Occupancy Command MV 10
Standby Mode MV 11 √ √ √ √
Dehumidification Lockout MV 13 √ √
Sequence of Operation MV 15 √ √ √ √
System Mode MV 16 √ √ √ √
Fan Mode MV 17 √ √ √ √
Use Standby Screen MV 32 √ √ √ √
BI 1 / UI 16 Configuration* MV 46 √ √ √ √
BI 2 / UI 17 Configuration* MV 47 √ √ √ √
UI 19 Configuration MV 49 √ √
Auto Mode Enable MV 50 √ √ √ √
Temperature Scale MV 51 √ √ √ √
Fan Sequence MV 57 √ √ √ √
Setpoint Function MV 58 √ √
Auto Fan Function MV 66 √ √ √ √
Room Humidity Setpoint MV 70 √ √
Enable Smart Recovery MV 71 √ √
Schedule Menu MV 73 √ √
Control Type MV 81 √ √
RUI 1 Configuration MV 82 √ √
RBI 2 Configuration MV 83 √ √ √ √
Heating Valve MV 86 √ √ √ √
Cooling Valve MV 87
Pulsed Heating MV 90
BO8 Aux Output Time Base MV 91 √ √
BO8 Aux Output configuration MV 92 √ √
DA / RA MV 94 √ √
Fan Control MV 95 √ √ √ √
UO 9 Configuration MV 96 √ √
UO 10 Configuration MV 97
UO 11 Configuration MV 98 √ √
UO 12 Configuration MV 99 √ √
French MV 101
Spanish MV 102 √ √
Chinese MV 103 √ √
Russian MV 104
Occupancy Source MV 110 √ √
Type and
Instance
VTR8300A5x00B
VTR8350A5x00B
VT8300U5x00B
√ √ √ √
√ √ √ √
√ √ √ √
√ √
√ √
√ √
VT8350U5x00B
Viconics Technologies Inc.
© 2014 Viconics Technologies Inc. All rights reserved.
BACnet® Integration Manual
VTR8300 AND VT8300 SERIES
VTR8300 / VT8300 Series
11
Object Name
Mode button MV 111 √ √
Custom button icon MV 114 √ √ √ √
Custom button behaviour MV 115 √ √ √ √
Arabic MV 120 √ √ √ √
Bulgarian MV 121 √ √ √ √
Czech MV 122 √ √ √ √
Danish MV 123 √ √ √ √
Dutch MV 124 √ √ √ √
Finnish MV 125 √ √ √ √
German MV 126 √ √ √ √
Hungarian MV 127 √ √ √ √
Indonesian MV 128 √ √ √ √
Italian MV 129 √ √ √ √
Norwegian MV 130 √ √ √ √
Polish MV 131 √ √ √ √
Portuguese MV 132
Slovak MV 133 √ √ √ √
Swedish MV 134 √ √ √ √
Turkish MV 135
Wireless Zone 1 Set Function MV 210 √ √
Wireless Zone 2 Set Function MV 220 √ √
Wireless Zone 3 Set Function MV 230 √ √
Wireless Zone 4 Set Function MV 240 √ √
Wireless Zone 5 Set Function MV 250 √ √
Wireless Zone 6 Set Function MV 260 √ √
Wireless Zone 7 Set Function MV 270
Wireless Zone 8 Set Function MV 280 √ √
Wireless Zone 9 Set Function MV 290 √ √
Wireless Zone 10 Set Function MV 300 √ √
BACnet Status MI 1 √ √ √ √
ZigBee Status MI 2 √ √ √ √
Effective Occupancy MI 33
Wireless Zone 1 Status MI 210 √ √
Wireless Zone 1 Battery MI 211 √ √
Wireless Zone 1 Paired MI 212
Wireless Zone 2 Status MI 220 √ √
Wireless Zone 2 Battery MI 221 √ √
Wireless Zone 2 Paired MI 222
Type and
Instance
VTR8300AxBxx
VTR8350AxBxx
VT8300UxBxx
√ √ √ √
√ √ √ √
√ √
√ √ √ √
√ √
√ √
Object Name
VT8350UxBxx
Wireless Zone 3 Status MI 230 √ √
Wireless Zone 3 Battery MI 231 √ √
Wireless Zone 3 Paired MI 232 √ √
Wireless Zone 4 Status MI 240 √ √
Wireless Zone 4 Battery MI 241 √ √
Wireless Zone 4 Paired MI 242
Wireless Zone 5 Status MI 250 √ √
Wireless Zone 5 Battery MI 251
Wireless Zone 5 Paired MI 252 √ √
Wireless Zone 6 Status MI 260 √ √
Wireless Zone 6 Battery MI 261
Wireless Zone 6 Paired MI 262 √ √
Wireless Zone 7 Status MI 270 √ √
Wireless Zone 7 Battery MI 271 √ √
Wireless Zone 7 Paired MI 272 √ √
Wireless Zone 8 Status MI 280 √ √
Wireless Zone 8 Battery MI 281 √ √
Wireless Zone 8 Paired MI 282
Wireless Zone 9 Status MI 290 √ √
Wireless Zone 9 Battery MI 291 √ √
Wireless Zone 9 Paired MI 292 √ √
Wireless Zone 10 Status MI 300 √ √
Wireless Zone 10 Battery MI 301 √ √
Wireless Zone 10 Paired MI 302 √ √
Lua Program 1 PG 1 √ √
Lua Program 2 PG 2 √ √
Lua Program 3 PG 3 √ √
Lua Program 4 PG 4 √ √
Lua Program 5 PG 5 √ √
Lua Program 6 PG 6 √ √
Lua Program 7 PG 7 √ √
Lua Program 8 PG 8 √ √
Lua Program 9 PG 9 √ √
Lua Program 10 PG 10 √ √
Schedule SCH 1 √ √
Calendar CAL 1
Type and
Instance
VTR8300AxBxx
VTR8350AxBxx
VT8300UxBxx
VT8350UxBxx
√ √
√ √
√ √
√ √
√ √
12
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© 2014 Viconics Technologies Inc. All rights reserved.
VTR8300 / VT8300 Series
BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR AV OBJECTS
Object name Object Type Instance
User HMI AV 2 0 11 0
Low Backlight AV 3 0% 100% 60%
Night Backlight AV 4 0% 100% 5%
Calibrate Temperature Sensor AV 7 - 5°F(2.5°C) 0°F (0°C)
Calibrate Humidity Sensor AV 8 -15% 15% 0%
COM Address AV 10 0 254 254
ZigBee PAN ID AV 11 0 1000 0
ZigBee channel AV 12 0 25 10
ZigBee Short Address AV 13 0 32767 0
ZigBee IEEE Address AV 14 0 32767 0
Get from COM AV 15 0 254 0
BACnet Stack Poll Rate AV 16 1 5 4
Lua Parameter A AV 25 -32768 32767 0
Lua Parameter B AV 26 -32768 32767 0
Lua Parameter C AV 27 -32768 32767 0
Lua Parameter D AV 28 -32768 32767 0
Lua Parameter E AV 29 -32768 32767 0
Lua Parameter F AV 30 -32768 32767 0
Occupied Heat Setpoint AV 39 40°F (4.5°C) 90°F (32°C) 72°F (22°C)
Occupied Cool Setpoint AV 40 54°F (12°C) 100°F (37.5°C) 75°F (24°C)
Standby Heat Setpoint AV 41 40°F (4.5°C) 90°F (32°C) 69°F (21°C)
Standby Cool Setpoint AV 42 54°F (12°C) 100°F (37.5°C) 78°F (26°C)
Unoccupied Heat Setpoint AV 43 40°F (4.5°C) 90°F (32°C) 62°F (16.5°C)
Unoccupied Cooling Setpoint AV 44 54°F (12°C) 100°F (37.5°C) 80°F (26.5°C)
Minimum
Range Value
Maximum
Range Value
Default Value
Default Heating Setpoint AV 45 65°F (18°C) 80°F (26.5°C) 72°F (22°C)
Standby Temperature Differential AV 46 10°F (5.5°C) 50°F (28°C) 40°F (22°C)
Number of Pipes AV 52 2 4 2
Main Password AV 56 0 9999 N/A
User Password AV 57 0 9999 0
Heating Setpoint Limit AV 58 40°F (4.5°C) 90°F (32°C) 90°F (32°C)
Cooling Setpoint Limit AV 59 54°F (12°C) 100°F (37.5°C) 54°F (12°C)
Temporary Occupied Time AV 62 0H 24H 2H
Min. Deadband AV 63 2°F (1°C) 5°F (2.5°C) 2°F (1°C)
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR AV OBJECTS
Object Name Object Type Instance
Proportional Band AV 65 3°F (1.2°C) 10°F (5.6°C) 3°F (1.2°C)
Standby time AV 67 5H 24H 5H
Unoccupied Time AV 68 0H 24H 0H
Room Humidity Setpoint AV 71 30% 95% 50%
Dehumidification Hysteresis AV 72 2% 20% 5%
Dehumidification Max Cooling AV 73 20% 100% 100%
Heating CPH AV 84 3 8 4
Cooling CPH AV 85 3 8 4
Heating Demand Limit AV 88 0% 100% 0%
Cooling Demand Limit AV 89 0% 100% 0%
Floating Time AV 90 5 90 15
Room Temperature AV 100 -40°F (-40°C) 122°F (50°C) N/A
Outdoor Temperature AV 101 -40°F (-40°C) 122°F (50°C) N/A
Supply Temperature AV 102 -40°F (-40°C) 122°F (50°C) N/A
Room Humidity AV 103 5% 95% N/A
RUI Temperature AV 104 -40°F (-40°C) 122°F (50°C) N/A
Remote Sensor temp AV 105 -40°F (-40°C) 122°F (50°C) N/A
VTR8300 / VT8300 Series
Minimum
Range Value
Maximum
Range Value
13
Default Value
PROPERTY VALUE RANGE RESTRICTIONS FOR AO OBJECTS
Object Name Object Type Instance
PI Heating Demand AO 21 0% 100% N/A
PI Cooling Demand AO 22 0% 100% N/A
Pulsed Heating Demand AO 90 0% 100% N/A
UO 11 Analog Output AO 123 0 100 0
UO 12 Analog Output AO 124 0 100 0
UO 9 Analog Output AO 125 0 100 0
UO 10 Analog Output AO 126 0 100 0
Minimum
Range Value
Maximum
Range Value
Default Value
14
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR AI OBJECTS
Object Name Object Type Instance
Thermistor AI 1 -400 1220 0
Light Sensor Level AI 2 0 30000 N/A
Thermistor Self Heating AI 3 -400 1220 0
Relative Humidity Raw Value AI 4 200 800 0
Rem. Sensor AI 5 0 4095 0
UI 23 Raw value AI 7 0 4095 0
UI 22 Raw Value AI 8 0 4095 0
UI 19 Raw value AI 31 0 4095 0
Wireless Zone 1 IEEE address AI 210 0 32767 0
Wireless Zone 2 IEEE address AI 220 0 32767 0
Wireless Zone 3 IEEE address AI 230 0 32767 0
Wireless Zone 4 IEEE address AI 240 0 32767 0
Wireless Zone 5 IEEE address AI 250 0 32767 0
Wireless Zone 6 IEEE address AI 260 0 32767 0
Wireless Zone 7 IEEE address AI 270 0 32767 0
Wireless Zone 8 IEEE address AI 280 0 32767 0
Wireless Zone 9 IEEE address AI 290 0 32767 0
Wireless Zone 10 IEEE address AI 300 0 32767 0
Minimum
Range Value
Maximum
Range Value
Default Value
PROPERTY VALUE RANGE RESTRICTIONS FOR BV OBJECTS
Object Name Object Type Instance
Door Contact Status BV 1 Closed Open Closed
Door Contact Installed BV 2 No Yes No
Window Contact Status BV 3 Closed Opened Closed
Window Contact Installed BV 4 No Ye s No
Low Battery Alarm BV 5 Off On Off
Force High Backlight BV 6 Off On Off
Display Long Screen Message BV 7 Off On No
Local Motion BV 32 On Off On
Window Alarm BV 35 Off On Off
Filter Alarm BV 36 Off On Off
Service alarm BV 37 Off On Off
Dehumidification Status BV 38 Off On Off
Smart Recovery Status BV 40 Off On Off
ZigBee PIR Sensor Installed BV 200 Off On Off
Zigbee Sensor Motion BV 201 Off On Off
Minimum
Range Value
Maximum
Range Value
Default Value
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR BO OBJECTS
Object Name Object Type Instance
UO 9 Binary Output BO 93 Off On Off
UO 10 Binary Output BO 94 Off On Off
High Speed Fan Output BO 95 Off On Off
Medium Fan Speed Output BO 96 Off On Off
Low Speed Fan Output BO 97 Off On Off
BO 8 Auxiliary Binary Output BO 98 Off On Off
UO 11 Binary Output BO 101 Off On Off
UO 12 Binary Output BO 102 Off On Off
PROPERTY VALUE RANGE RESTRICTIONS FOR BI OBJECTS
Object Name Object Type Instance
BI 1 / UI 16 Binary Input BI 29 Deactivated Activated Deactivated
BI 2 / UI 17 Binary Input BI 30 Deactivated Activated Deactivated
RUI 1 / UI 19 Binary Input BI 91 Deactivated Activated Deactivated
RBI 2 Status BI 92 Deactivated Activated Deactivated
VTR8300 / VT8300 Series
Minimum
Range Value
Minimum
Range Value
Maximum
Range Value
Maximum
Range Value
15
Default Value
Default Value
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Long Message Background Colour MV 1
HMI Colour MV 2
Main Display MV 3
1 White
2 Green
3 Blue
4 Grey
5 Dark Grey
6 Default
7 Red
1 White
2 Green
3 Blue
4 Grey
5 Dark Grey
1 Temperature
2 Setpoint
White
Green
Temperature
16
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Display Language MV 4
Time Format MV 5
Network Units MV 6
Network Language MV 7
BACnet Baud Rate MV 8
No Activity Sleep Mode MV 9
Occupancy Command MV 10
1 English
2 French
3 Spanish
4 Chinese
5 Russian
6 Arabic
7 Bulgarian
8 Czech
9 Danish
10 Dutch
11 Finnish
12 German
13 Hungarian
14 Indonesian
15 Italian
16 Norwegian
17 Polish
18 Portuguese
19 Slovak
20 Swedish
21 Turkish
1 AM-PM
2 24 Hours
1 SI
2 Imperial
1 English
3 Spanish
1 9600
2 19200
3 38400
4 57600
5 76800
6 115200
7 Auto
1 Disabled
2 Enabled
1 Local Occupancy
2 Occupied
3 Unoccupied
English
AM-PM
SI
English2 French
Auto
Disabled
Local Occupancy
VTR8300 / VT8300 Series
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17
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Standby Mode MV 11
Dehumidifcation Lockout MV 13
Sequence of Operation MV 15
System Mode MV 16
Fan Mode MV 17
Use Standby Screen MV 32
BI 1 / UI 16 Configuration MV 46
BI 2 / UI 17 Configuration MV 47
Auto Mode Enable MV 50
Temperature Scale MV 51
Fan Menu Sequence MV 57
1 Absolute
2 Offset
1 Disabled
2 Enabled
1 Cooling Only
2 Heating Only
3
4
5 Cooling / Heating
6
1 Off
2 Auto
3 Cool
4 Heat
1 Low
2 Med
3 High
4 Auto
5 On
1 No
2 Ye s
1 None
2 Rem NSB
3 Motion NO
4 Motion NC
5 Window
1 None
3 Override
1 Disabled
2 Enabled
1 °C
2 °F
1 Low-Med-High
2 Low-High
3 Low-Med-High-Auto
4 Low-High-Auto
5 On-Auto
Cooling with Electric
Reheat
Heating with Electric
Reheat
Cooling / Heating, with
Electric Reheat
Absolute
Enabled
Heating Only
Heat
Auto
No
None
None2 Door Dry
Enabled
°C
On-Auto
18
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VTR8300 / VT8300 Series
BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Setpoint Function MV 58
Auto Fan Function MV 66
Room Humidity Display MV 70
Enable Smart Recovery MV 71
Schedule Menu MV 73
Control Type MV 81
RUI 1 Configuration MV 82
RBI 2 Configuration MV 83
Heating Valve MV 86
Cooling Valve MV 87
Pulsed Heating MV 90
BO8 Aux Output Time Base MV 91
BO8 Aux Output Configuration MV 92
Action MV 94
1 Dual Stp
2 Attach Stp
1 AS
2 AS / AD
1 Disabled
2 Enabled
1 Off
2 On
1 Disabled
2 Enabled
3
4
1 On / Off
2 Floating
3 Analog
1 None
2 Filter
3 Service
4 COC/NH
5 COC/NC
6 COS
1 None
3 Service
1 NO
2 NC
1 NO
2 NC
1 Off
3 Occupancy Output
1 15 min.
2 10 sec.
1 Not Used
2 Aux NO
3 Aux NC
4 Aux F&NO
5 Aux F&NC
1 DA
2 RA
Dis.no.clk
En.no.clk
Dual Stp
AS
Disabled
Off
Disabled
Floating
None
None2 Filter
Normally Closed
Normally Closed
Off2 On
15 min.
Not Used
DA
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Fan Control MV 95
UO 9 Configuration MV 96
UO 10 Configuration MV 97
UO 11 Configuration MV 98
UO 12 Configuration MV 99
French MV 101
Spanish MV 102
Chinese MV 103
Russian MV 104
Occupancy Source MV 110
Mode button MV 111
Custom button icon MV 114
VTR8300 / VT8300 Series
1 On
3 Off-All
1 Analog
2 Binary
1 Analog
2 Binary
1 Analog
2 Binary
1 Analog
2 Binary
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Motion
2 Schedule
1 Normal
2 Off-Auto
1 Default Button
2 No Button
3 System Mode Heat/Cool
4 System Mode On/Off
5 Fan Mode
6 Override Button
7 Units Button
8 Help Button
9 Language Button
10 Schedule Button
11 Lighting Button
12 Blind Button
13 Lamp Button
14 Energy Button
15 Make Room Button
16 Setting Button
17 Timer Button
19
On2 Off-Auto
Binary
Binary
Binary
Binary
Enabled
Enabled
Enabled
Enabled
Motion
Normal
Default Button
20
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VTR8300 / VT8300 Series
BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Custom button behaviour MV 115
Arabic MV 120
Bulgarian MV 121
Czech MV 122
Danish MV 123
Dutch MV 124
Finnish MV 125
German MV 126
Hungarian MV 127
Indonesian MV 128
Italian MV 129
Norwegian MV 130
Polish MV 131
Portuguese MV 132
Slovak MV 133
1 Default Function
2 No Function
3 System Mode Function
4 Fan Function
5 Override Function
6 Schedule Function
7 Units Function
8 Help Function
9 Language Function
10 Conguration Function
11 Custom Function
12 Standby Function
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 Disabled
2 Enabled
Default Function
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
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PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
VTR8300 / VT8300 Series
21
Swedish MV 134
Turkish MV 135
Wireless Zone 1 Set Function MV 210
Wireless Zone 2 Set Function MV 220
Wireless Zone 3 Set Function MV 230
Wireless Zone 4 Set Function MV 240
Wireless Zone 5 Set Function MV 250
Wireless Zone 6 Set Function MV 260
1 Disabled
2 Enabled
1 Disabled
2 Enabled
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
Disabled
Disabled
None
None
None
None
None
None
22
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS
Object Name Object Type Instance Index Text Default Value
Wireless Zone 7 Set Function MV 270
Wireless Zone 8 Set Function MV 280
Wireless Zone 9 Set Function MV 290
Wireless Zone 10 Set Function MV 300
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
1 None
2 Window
3 Door
4 Motion
5 Status
6 Remove
None
None
None
None
PROPERTY VALUE RANGE RESTRICTIONS FOR MI OBJECTS
Object Name Object Type Instance Index Text Default Value
BACnet Status MI 1
ZigBee Status MI 2
Effective Occupancy MI 33
1 Offline
2 Online
1 Not Detected
2 Power On
3 No Network
4 Joined
5 Online
1 Occupied
2 Unoccupied
3 Override
4 Standby
Offline
N/A
Occupied
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MI OBJECTS
Object Name Object Type Instance Index Text Default Value
Wireless Zone 1 Status MI 210
Wireless Zone 1 Battery MI 211
Wireless Zone 1 Paired MI 212
Wireless Zone 2 Status MI 220
Wireless Zone 2 Battery MI 221
Wireless Zone 2 Paired MI 222
Wireless Zone 3 Status MI 230
Wireless Zone 3 Battery MI 231
Wireless Zone 3 Paired MI 232
Wireless Zone 4 Status MI 240
VTR8300 / VT8300 Series
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
2 Ye s
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
23
None
None2 Normal
No2 Ye s
None
None2 Normal
No2 Ye s
None
None2 Normal
No
None
24
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VTR8300 / VT8300 Series
BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MI OBJECTS
Object Name Object Type Instance Index Text Default Value
1 None
Wireless Zone 4 Battery MI 241
Wireless Zone 4 Paired MI 242
Wireless Zone 5 Status MI 250
Wireless Zone 5 Battery MI 251
Wireless Zone 5 Paired MI 252
Wireless Zone 6 Status MI 260
Wireless Zone 6 Battery MI 261
Wireless Zone 6 Paired MI 262
Wireless Zone 7 Status MI 270
Wireless Zone 7 Battery MI 271
Wireless Zone 7 Paired MI 272
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
2 Normal
3 Low
1 No
2 Ye s
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
None2 Normal
No2 Ye s
None
None2 Normal
No2 Ye s
None
None
No
None
None2 Normal
No2 Ye s
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BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR MI OBJECTS
Object Name Object Type Instance Index Text Default Value
Wireless Zone 8 Status MI 280
Wireless Zone 8 Battery MI 281
Wireless Zone 8 Paired MI 282
Wireless Zone 9 Status MI 290
Wireless Zone 9 Battery MI 291
Wireless Zone 9 Paired MI 292
Wireless Zone 10 Status MI 300
Wireless Zone 10 Battery MI 301
Wireless Zone 10 Paired MI 302
VTR8300 / VT8300 Series
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
3 Low
1 No
3 Invalid
1 None
2 Closed
3 Opened
4 Motion
5 No Motion
1 None
2 Normal
3 Low
1 No
2 Ye s
3 Invalid
25
None
None2 Normal
No2 Ye s
None
None2 Normal
No2 Ye s
None
None
No
26
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VTR8300 / VT8300 Series
BACnet® Integration Manual
PROPERTY VALUE RANGE RESTRICTIONS FOR CSV OBJECTS
Object Name Object Type Instance
Short Screen Message CSV 1
Long Screen Message CSV 2
String of printable characters. (Same as Location Property 58 (R,W)) * Not saved in EEPROM, this info will be lost after a power loss.
String of printable characters. (Same as Description Property 28 (R,W)) * Not saved in EEPROM, this info will be lost after a power loss.
Parameters
PROPERTY VALUE RANGE RESTRICTIONS FOR PG OBJECTS
Object Name Object Type Instance
Lua Program 1 PG 1 Lua program code is recorded in the description field
Lua Program 2 PG 2 Lua program code is recorded in the description field
Lua Program 3 PG 3 Lua program code is recorded in the description field
Lua Program 4 PG 4 Lua program code is recorded in the description field
Lua Program 5 PG 5 Lua program code is recorded in the description field
Lua Program 6 PG 6 Lua program code is recorded in the description field
Lua Program 7 PG 7 Lua program code is recorded in the description field
Lua Program 8 PG 8 Lua program code is recorded in the description field
Lua Program 9 PG 9 Lua program code is recorded in the description field
Lua Program 10 PG 10 Lua program code is recorded in the description field
Parameters
PROPERTY VALUE RANGE RESTRICTIONS FOR SCH / CAL OBJECTS
Object Name Object Type Instance
Occupancy Schedule SCH 1
Occupancy Calendar CAL 1 Date, Range of dates, Weekend
7 days of the week, 3 occupied setpoint times & 3 unoccupied setpoint times alternating in fixed order.
Parameters
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BACnet® Integration Manual
INTEGRATION – GLOBAL COMMANDS
The following figure shows which objects from the controller can be monitored and controlled from the BAS front-end.
Global Command Control Level Device Level
VTR8300 / VT8300 Series
27
MSTP
Network
BAS
Front End
All Devices (All controllers)
Outdoor Temperature
Outdoor Temperature & Outdoor Humidity (Enthalpy)
Outdoor Temperature and HVAC plant current mode
Specific Devices (Specific area controllers)
Schedule
Schedule & Outdoor Temperature
VTR8300/VT8300 Series
controller
Outdoor Temperature (AV10)
Dehumidification Lockout (MV13)
Sequence of Operation (MV15)
System mode (AV16)
Occupancy Command (MV10)
Fan Mode (MV17)
Occupied Heating Setpoint (AV39)
Unoccupied Heating Setpoint (AV43)
Occupied Cooling Setpoint (AV40)
Unoccupied Cooling Setpoint (AV44)
Restrict user access to controller
Room temperature for testing and override
Figure 1 : Global commands from a BAS front-end to a typical VT83xx series controller
Main Password (AV56)
Room Temperature (AV100)
Note: For information about integrating ZigBee wireless sensors with BACnet, refer to the ZigBee wireless sensor installation guide "Pairing VT8000 Series Room Controllers with ZigBee Sensors"
28
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BACnet® Integration Manual
VTR8300/VT8300 INTEGRATION – GRAPHICAL USER INTERFACE OBJECTS
Objects typically used in a GUI:
• RoomTemperature(AV100)
• OccupiedandUnoccupiedHeatSetpoints
(AV 39 and AV43)
• OccupiedandUnoccupiedCoolSetpoints (AV 40 and AV44)
• OutdoorTemperature(AV101)
• SupplyTemperature(AI102,ifavailable)
• OccupancyCommand(MV10)
• SystemMode(MV16)
• HeatingOutput(BO94)
• CoolingOutput(BO93)
• PIHeatingDemand(AO21)
• PICoolingDemand(AO22)
• WindowAlarm(BI35)
• FilterAlarm(BI36)
• ServiceAlarm(BI37)
Occupancy
System mode
Outdoor Temperature
PI Cooling 78%
Demand
Aux Output
Figure-1 GUI Example - VTR8300
Occupied
Cool
o
80
F
Supply Temperature (AI11)
On
Unoccupied Heating Setpoint
Unoccupied Cooling Setpoint
Occupied Heating Setpoint
Occupied Cooling Setpoint
Supply Temperature
o
65.2
F
PI Heating Demand
Room Temperature
65.2
74.2
71.0
73.0
62.0
82.0
o
53%
o
F
o
F
o
F
o
F
o
F
F
VTR8300/VT8300 INTEGRATION – GRAPHICAL USER INTERFACE OBJECTS
The following objects should be used in a GUI:
•RoomTemperature(AV100)
• OccupiedandUnoccupiedHeatSetpoints
(AV 39 and AV43)
• OccupiedandUnoccupiedCoolSetpoints (AV 40 and AV44)
• RoomHumidity(AV103,ifavailable)
• RoomHumiditySetpoint(MV70,ifavailable)
• OutdoorTemperature(AV101)
• SupplyTemperature(AV102,ifavailable)
• OccupancyCommand(MV10)
• SystemMode(MV16)
• FanMode(MV17)
• HeatingOutput(BO94)
• CoolingOutput(BO93)
• PIHeatingDemand(AO21)
• PICoolingDemand(AO22)
• WindowAlarm(BI35)
• FilterAlarm(BI36)
• ServiceAlarm(BI37)
Fan Status
On
Occupied
Heat
High
o
42
F
Occupied Heating Setpoint
Occupied Cooling Setpoint
Unoccupied Heating Setpoint
Unoccupied Cooling Setpoint
Occupancy
System mode
Fan mode
Outdoor Temperature
Filter Alarm
Normal
Figure-2 GUI Example - VTR8300
PI Heat
53%
Room Temperature
Room Humidity
Room Humidity Setpoint
Supply Temperature
PI Cool
0%
71.2
71.0
73.0
62.0
82.0
49.7
50.0
42
o
F
o
F
o
F
o
F
o
F
o
F
o
F
o
F
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BACnet® Integration Manual
CONFIGURATION OBJECTS
If your BAS allows you to remove objects, Viconics recommends removing all configuration objects once your setup is complete. This prevents unnecessary network polling and traffic.
WIRING GUIDE
Overview
Viconics uses EIA-485 as the physical layer between their devices and supervisory controllers. A "Device” represents any product with an active EIA-485 network connection, including Viconics and non-Viconics controllers.
A summary of network specifications are listed below.
Summary Specifications
Parameter Details
Media
Characteristic Impedance
Distributed capacitance
Maximum length per segment
Polarity
Multi-drop
Terminations
Network bias resistors
Maximum number of nodes per segment
Maximum number of nodes per network
Baud rate
VTR8300 / VT8300 Series
Twisted pair 18 AWG, 22 AWG, or 24 AWG (shielded recommended)
100-130 ohms
Less than 100 pF per meter (30 pF per foot)
1200 meters (4000 feet) Note: 18 AWG cable
Polarity sensitive
Daisy-chain (no T connections)
1. Devices are installed at both ends of the MS/TP network: 120 Ohms resistor should be installed at each end.
2. A device is installed at one end of the MS/TP network and a third-party device is installed at the other end. Install an End-Of-Line resistor value that matches the third-party device instruction regarding the End-Of-Line resistors.
3. Third-party devices are installed at both ends of the MS/TP network. Follow the third-party device instructions regarding the End-Of-Line resistors.
510 ohms per wire (maximum two sets per segment)
64 (Viconics devices only)
128
9600, 19200, 38400, 57600, 76800, 115200 (Auto detect)
29
Table : Summary of Specifications for a Viconics EIA-485 Network
30
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BACnet® Integration Manual
WIRING GUIDE
Cable Type
Viconics recommends the use of balanced 22-24 AWG twisted pair with a characteristic impedance of 100­130 ohms and capacitance of 30 pF/ft or lower. A braided shield is also recommended.
Impedance
A value based on the inherent conductance, resistance, capacitance, and inductance that represent the impedance of an infinitely long cable. The nominal impedance of the cable should be between 100 ohms and 120 ohms. Using 120 ohms results in a lighter load on the network.
Capacitance (pF/ft)
The amount of equivalent capacitive load of the cable (per foot basis). One factor limiting total cable length is the capacitive load. Systems with long lengths benefit from using low capacitance cable (17pF/ft or lower).
NETWORK CONFIGURATION
EIA-485 networks use a daisy chain configuration. A daisy chain has only one main cable and every network device is connected directly along its path.
Figure 3 illustrates two improper network configurations and the proper daisy chain configuration.
Figure 3 : Three different network configurations: star, bus, and daisy chain. Only the daisy chain configuration is correct for an EIA-485 network
Other methods of wiring an EIA-485 network may give unreliable and unpredictable results. There are no troubleshooting methods for these types of networks. Site experimentation may be required with no guarantee of success. As a result, Viconics only supports daisy chain configurations.
Recommended Maximum Number of Devices
For reasons of network performance, a maximum of 64 nodes is recommended on a single daisy-chain segment. A node is defined as any device (panel, zone, or Repeater) connected to the RS485 network. Terminators do not count as a node.
Add the following to determine the number of nodes on a network:
•Onenodeforeachdevice,includingmainpanels
•Onenodeforeachrepeateronthechain
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VTR8300 / VT8300 Series
*NOTE: End Of Line resistors do not count as nodes.
31
EOL
Resistor
SC
Supervisory
EOL
Resistor
Controller
Node 1 Node 2 Node 3 Node 4 Node 5
Figure 4 : Exa mple Network - 5 Nodes
Figure 4 shows one node for the main SC panel and 4 for the controllers, for a total of 5 nodes. If more than 64 devices are needed on the network, install repeaters to create additional network segments. However, the BACNet MS/TP protocol may exhibit slow performance on large networks with more than 64 total nodes.
Maximum Cable Length
The maximum length of a chain is related to its transmission speed. The longer the chain, the slower the speed. Using proper cable, the maximum length of an EIA-485 daisy chain is 4000-ft (1200 m). This only works reliably for data rates up to 100,000 bps. Viconics' maximum data rate is 76,800 bps. network length of more than 4000 feet, repeaters are required to extend the network.
EIA-485 Repeaters
If you have more than 64 devices, or require a maximum network length of more than 4000 feet, repeaters are required to extend the network. Note that long networks or networks with more than 64 nodes may experience slow performance due to limitations of the BACnet MS/TP protocol.
If you require a maximum
EOL
Resistor
SC
Supervisory
Controller
EOL
Resistor
Repeater
EOL
Resistor
Repeater
EOL
Resistor
Repeater
EOL
Resistor
EOL
Resistor
EOL
Resistor
EOL
Resistor
Figure-5 Correct Repeater Use in an EIA-485 Network
The ideal configuration is to daisy chain the repeaters to the main panel. From each of these repeaters, a separate daisy chain branches off. Figure 5 demonstrates a valid use of repeaters in an EIA-485 network.
Do not install repeaters in series as this may result in network reliability problems. Incorrect use of a repeater in an EIA-485 network is illustrated in Figure 6.
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Terminal Controller
Terminal Controller
To others
To others
13 - COM +
14 - COM -
VTR83xxA
VTR83xxA
13 - COM +
14 - COM -
EOL
Resistor
EOL
Resistor
SC
Supervisory
Controller
Repeater
CAUTION:
DO NOT ADD A SECOND REPEATER IN SERIES
EOL
Resistor
Repeater
EOL
Resistor
EOL
Resistor
Figure-6 Incorrect Repeater Use in an EIA-485 Network
End Of Line (EOL) Resistors
A MS/TP network must be properly terminated. For daisy chain configurations, you must install an EOL resistor at each end of the daisy chain. Depending on your MSTP network configuration, the resistance value of the EOL resistor may change.
• If Viconics's devices are installed at both ends of the MSTP network, a 120 Ohm resistor should be installed at each end.
• If a Viconics device is installed at one end of the MSTP network and a 3rd party device is installed at the other end, make sure you install an EOL resistor value that matches the 3rd party devices instructions regarding its EOL resistor value, and install a 120 Ohm resistor at the Viconics device end.
• If 3rd party devices are installed at both ends of the MSTP network, both must use EOL resistors with values matching the those described in the instructions for the devices.
Network Adapter
BACnet® Communication Wiring (if applicable)
Figure-7 MS/TP Connections
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The polarity of the connection to the cable is important. From one module to the other it is important that the same colored wire be connected to “plus” or “+” and the other colored wire be connected to the “minus” or ”-“. Figure 7 shows the proper MS/TP connections.
NOTE: The Ref terminal should NEVER be used to wire shields. The 2 shields from each feed of the network connection to a controller should be wired any accidental connection to the ground.
The joined shield connection should then be grounded at a SINGLE point on the whole segment. More than one ground connection to a shielded wire may induce ground loop noises and affect communication.
DEFAULT DEVICE NAME AND ID
Default Device Name set to Model number – MAC where:
•MACisthecurrentMACaddressofthedevice.
•ModelnumberisViconicspartnumber.
The device name upgrades as soon as there is a change to the device MAC address.
The Device Name and Device ID properties are writable. Both properties can be renamed from any BACnet® network management tool as long as the tool itself can write to these properties.
VTR8300/VT8300 Models
Default Device ID is set to: 83000 + MAC where MAC is the current MAC address of the device.
The device ID upgrades as soon as there is a change to the device’s MAC. For example, when a VTR8300 controller with a MAC address of 63 is connected to a network, its default Device ID is 83063.
INTEGRATING VICONICS DEVICES ON A BACNET MS/TP NETWORK
Before doing any BACnet® integration, make sure you refer to a Viconics PICS document (Protocol Implementation Conformance Statement). The PICS document lists all the BACnet® Services and Object types supported by a device. You can find the document at www.viconics.com.
Viconics devices do not support the COV service. COV reporting allows an object to send out notices when its Present-Value property is incremented by a pre-defined value. Since this is not supported at Viconics, special attention should be given to the polling time settings at the Supervisory Controller and Workstation level when using a graphic interface or an application program to read or write to a Viconics object.
Graphical Interfaces
A graphic interface might poll all data linked to the graphic page on a COV basis. If the third-party device does not support COV, the graphical interface relies on a pre-configured polling interval, which is usually in hundredths of milliseconds. Any device containing a monitored object could be subject to network traffic congestion if such a polling interval is used. Viconics strongly recommends a polling interval of 5 seconds (minimum) for any graphical interface. This becomes even more critical in graphics where a single representation might poll many devices. If the proper poll rate is not respected, devices may be reported offline by certain front-ends by saturating the traffic handling capacity of BACnet® MS/TP without COV subscription.
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together in the back of the controller and properly protected to prevent
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Free Programmed Object or Loops
Read and write MS/TP data on an “If Once” basis or a “Do Every Loop" basis instead of reading or writing to a third-party device’s object directly in the program. Otherwise, any read or write request occurs at the Supervisory Controller’s program scan rate, which may be in hundredths of milliseconds. This can bog down a network as single commands can be sent to all ASC devices down the MS/TP trunks every hundredths of milliseconds
Programs writing to the devices should have a structure similar to the following:
If Once Schedule = On then
MV10 = Occupied
End If
If Once Schedule = Off Then
MV10 = Unoccupied
End If
OR
Do Every 5min
If Schedule = On Then
MV10= Occupied
Else
MV10 = Unoccupied
End If
End Do
Retries and Timeouts
In BACnet® integration, you should note the device object of the Supervisory Controller and Operator’s Workstation. This object contains the two following required properties:
1) Retry Timeout
2) Number of APDU Retries
The Retry Timeout specifies the time between re-transmissions if the acknowledgement is not received. Increasing this value may help if you are experiencing problems with controllers dropping off line.
The Number of APDU Retries specifies the number of times unsuccessful transmissions are repeated. If the receiving controller has not received the transmission successfully after this many attempts, no further attempts will be made.
For example, if one of the controllers does not reply to a Supervisory Controller (SC) request, and the SC’s Retry Timeout is set to 2000 milliseconds and the Number of APDU Retries is set to 1 (SC level), the SC sends one other request 2 seconds later. If the MS/TP device does not reply, it is considered off line by the workstation.
Having a Retry Timeout value of 10450 milliseconds and a Number of APDU Retries property set to 3 at the SC level may prevent the device from dropping off line. These properties should also be changed at the workstation level since the workstation issues requests to any MS/TP devices when the graphics are used.
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Writing and Binding Behaviour
Refer to the proper section as per the table below for BACnet write command behaviour for specific objects and functionality.
Green = proper write binding method
Orange = correct write binding method with behaviour changes on the user HMI
Red = application locking write binding method
Object type Relinquish Default Priority Array 4-16 Priority Array 1-3
AI’s, BI’s & MI’s Note A) Note A) Note A)
Configuration Properties Note B) Note C) Note C1)
User HMI objects Note B) Note C) Note C1)
Status objects Note D) Note E) Note E1)
Physical hardware output objects Note D) Note F) Note F1)
Note A) AI’s, BI’s & MI’s.
Object examples in this category: AI2 / Light Sensor Level, BI29 / UI16 Status, MI33 / Effective Occupancy.
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All input objects are read only and cannot be written to independently of the priority array used. These types of points are typically used for statuses and external logic functions.
Note B) Configuration Properties and User HMI objects.
Object examples in the configuration property category: AV57 / User Password, BV6 / Force High Level Back­light, MV2 / HMI color.
Object examples in the User HMI category: AV40 / Occupied Cool Setpoint, MV16 / System Mode, MV17 / Fan Mode.
Writing and binding to the relinquish default property is the preferred method to use when setting up network logic using the configuration properties and user HMI objects.
When writing and binding to the relinquish default, the control will store and archive the new written present value in flash over the network. As soon as the new present value is received, the controller will use this new present value in all its internal control logics and functions.
When writing and binding to the relinquish default, the controller internal control logics and functions are NOT by-passed, and the controller will still operate normally.
When writing and binding to the relinquish default, a user can still change user HMI values and an installer can still change configuration properties. In this case, the present value used by the controller internal control logics and functions is the last one received. Either the network present value or a value changed locally at the controller HMI.
BACnet Relinquish
Default value
Local HMI
Last value in
New present value process output
entered value
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Note C) Configuration Properties and User HMI objects.
Writing and binding to the priority arrays 4 to 16 property is a method to use IF the required intent is to lock the local HMI and prevent local adjustments made by the user HMI values or the configuration property values. If preventing the local user from accessing or tampering with the local HMI is the goal there are other simpler and more elegant ways to do so:
• Proper selection of the user experience of the local HMI. AV2 / User HMI can tailor the user screen to
properly present to the user the only local adjustments allowed. In total 12 different HMI user screen options are available. Locking the object by writing to array 4 to 16 is not required.
• AV56 / Main Password will prevent unauthorized installers from tampering with the configuration
properties. Locking the object by writing to array 4 to 16 is not required.
• AV57 / User Password will prevent unauthorized users from tampering with the user HMI value. Locking
the object by writing to array 4 to 16 is not required.
When writing and binding to the priority array 4 to 16, the control will NOT store and archive to flash memory and will simply use it in RAM. As soon as the new present value is received in priority arrays 4 to 16, the con­troller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 4 to 16, the controller internal control logics and functions ARE bypassed, and the controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority arrays 4 to 16 for its built-in internal control logics and functions. HOWEVER, since these present values are only stored in RAM and not in flash, if a power reset occurs, the override type function will be lost and the controller will start to operate using the relinquish default value. If the override type function is required, a new write command to priority arrays 4 to 16 is needed.
The controller fully supports native and BACnet compliant priority array 1 to 16 write commands. This simply means that a write value at level 4 has a higher authority than a write at level 9.
When writing and binding to priority array 4 to 16, a user cannot change user HMI values and an installer cannot change configuration properties. In this case, the present value used by the controller internal control logics and functions is the last write command received at priority array 4 to 16.
You can easily identify an overridden point at the controller in either configuration view, the setpoint view, the service view or the test outputs view. The point will be highlighted in RED indicating a write command to priority array 4 to 16.
The ONLY way to release the override due to the use of writing to priority array 4 to 16 is to send a write NULL command to the proper priority array currently locking the controller.
BACnet Priority
Array 4 to 16 value
BACnet Relinquish
Default value
Local HMI
Last value in
New present value process output based on priority array 4 -16
entered value
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Note C1) Configuration Properties and User HMI objects.
The behaviour is similar to the behaviour described in NOTE C with the following exceptions and changes
When writing and binding to the priority array 1 to 3, the controller WILL store and archive to flash memory. As soon as the new present value is received in priority array 1 to 3, the controller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 1 to 3, the controller internal control logics and functions ARE bypassed the same way they are when writing to priority array 4 to 16. The controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority array 1 to 3 for its built-in internal control logics and functions. HOWEVER, since writing to priority array 1 to 3 will store the value in flash memory, if a power reset occurs, the override type function will be maintained and the controller will start to operate right away using the last value written to priority array 1 to 3.
The ONLY way to release the override due to the use of writing to priority array 1 to 3 is to send a write NULL command to the proper priority array currently locking the controller. Only then will the controller start using the relinquish default value and allow the user or installer to change values.
Note D) Status objects and Physical hardware output objects.
No override functions are effective when writing or binding to the relinquish default property of status objects and physical hardware output objects. When writing to the relinquish default property, the internal program is not bypassed and still has priority over the write command on the relinquish default property.
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The internal program constantly writes internally to the same location used by the relinquish default property hence a single BACnet write at relinquish default has no effect on status objects and physical hardware output objects.
Internal controller program
under normal operaon
BACnet Relinquish
Default value
Status and outputs are processed by the controller for normal operation
BACnet Relinquish
Default network write
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BACnet Priority
Array 4 to 16 value
Status outputs are
value
BACnet Relinquish
Default value
Internal controller
normal operaon
BACnet Relinquish
Note E) Status objects.
Object examples in this category: BV36 / Filter Alarm, AV21 / PI Heating Demand. All status objects are writable.
Writing and binding to the priority array 4 to 16 property is a method to use IF the requirement is to lock the controller program and prevent statuses from being flagged based on the internal operation of the controller application programming.
When writing and binding to the priority array 4 to 16, the control will NOT store and archive to flash memory and will simply use it in RAM. As soon as the new present value is received in priority array 4 to 16, the controller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 4 to 16, the controller internal control logics and functions ARE bypassed, and the controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority array 4 to 16 for its built-in internal control logics and functions. HOWEV- ER, since these present values are only stored in RAM and not in flash, if a power reset occurs, the override type function will be lost and the controller will start to operate using the relinquish default value. If the override type function is required, a new write command to priority array 4 to 16 is needed.
The controller fully supports native and BACnet compliant priority array 1 to 16 write commands. This simply means that a write value at level 4 has a higher authority than a write at level 9.
When writing and binding to priority array 4 to 16, you locally identify if an override is effective on a status object using the service view. The point will be highlighted in RED indicating a write command to priority array 4 to 16. In this case, the present value used by the controller internal control logics is by-passed and the value displayed and used is the last write command received at priority array 4-16.
The ONLY way to release the override due to the use of writing to priority array 4 to 16 is to send a write NULL command to the proper priority array currently locking the controller.
program under
Default network write
processed by BACnet
Priority Array 4 to 16
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Note E1) Status objects.
Object examples in this category: BV36 / Filter Alarm, AV21 / PI Heating Demand. All status objects are writable.
The behaviour is similar to the behaviour described in NOTE E with the following exceptions and changes
When writing and binding to the priority array 1 to 3, the controller WILL store and archive to flash memory. As soon as the new present value is received in priority array 1 to 3, the controller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 1 to 3, the controller internal control logics and functions ARE bypassed the same way they are when writing to priority array 4 to 16. The controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority array 1 to 3 for its built-in internal control logics and functions. HOWEVER, since writing to priority array 1 to 3 will store the value in flash memory, if a power reset occurs, the override type function will be maintained and the controller will start to operate right away using the last value written to priority array 1 to 3.
The ONLY way to release the override due to the use of writing to priority array 1 to 3 is to send a write NULL command to the proper priority array currently locking the controller. Only then will the controller start using the relinquish default value and allow the user or installer to change values.
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Note F) Physical hardware output objects.
Object examples in this category: BO95 / BO4 High Speed fan, AO123 / UO11 Analog Status. All physical hardware output objects are writable. CAUTION NEEDS TO BE EXERCISED since bypassing the internal control functions of the controller CAN RESULT in damage to the equipment.
Writing and binding to the priority array 4 to 16 property is a method to use IF the requirement is to lock the controller program and prevent physical hardware output objects from being powered based on the internal operation of the controller application programming.
When writing and binding to the priority array 4 to 16, the control will NOT store and archive to flash memory and will simply use it in RAM. As soon as the new present value is received in priority array 4 to 16, the con­troller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 4 to 16, the controller internal control logics and functions ARE bypassed, and the controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority array 4 to 16 for its built-in internal control logics and functions. HOWEVER, since these present values are only stored in RAM and not in flash, if a power reset occurs, the override type function will be lost and the controller will start to operate using the relinquish default value. If the override type function is required, a new write command to priority array 4 to 16 is needed.
The controller fully supports native and BACnet compliant priority array 1 to 16 write commands. This simply means that a write value at level 4 has a higher authority than a write at level 9.
When writing and binding to priority array 4 to 16, you locally identify if an over­ride is effective on a status object using the test output view or the service view. The point will be highlighted in RED indicating a write command to priority array 4 to 16. In this case, the present value used by the controller internal control logics is bypassed and the value displayed and used is the last write command received at priority array 4-16.
The ONLY way to release the override due to the use of writing to priority array 4 to 16 is to send a write NULL command to the proper priority array currently locking the controller.
Internal controller program
under normal operaon
BACnet Relinquish
Default network write
BACnet Relinquish
Default value
BACnet Priority
Array 4 -16 value
Physical hardware outputs are processed by
BACnet Priority
Array 4 -16 value
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Note F1) Physical hardware output objects.
Object examples in this category: BO95 / BO4 High Speed fan, AO123 / UO11 Analog Status. All physical hardware output objects are writable. CAUTION NEEDS TO BE EXERCISED since bypassing the internal control functions of the controller CAN RESULT in damage to the equipment.
The behaviour is similar to the behaviour described in NOTE F with the following exceptions and changes
When writing and binding to the priority array 1 to 3, the controller WILL store and archive to flash memory. As soon as the new present value is received in priority array 1 to 3, the controller will use this new present value in all its internal control logics and functions.
When writing and binding to the priority array 1 to 3, the controller internal control logics and functions ARE bypassed the same way they are when writing to priority array 4 to 16. The controller will NOT operate with its own present values, but will be forced to use the last write commands received on priority array 1 to 3 for its built-in internal control logics and functions. HOWEVER, since writing to priority array 1 to 3 will store the value in flash, if a power reset occurs, the override type function will be maintained and the controller will start to operate right away using the last value written to priority array 1 to 3.
The ONLY way to release the override due to the use of writing to priority array 1 to 3 is to send a write NULL command to the proper priority array currently locking the controller. Only then will the controller start using the relinquish default value and allow the user or installer to change values.
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General Notes on BACnet Writing and Binding Behaviour.
• If in doubt as to whether a point is overridden using BACnet priority array 1 to 16 or not, open the
controller configuration menu, the service view or the test output view. An overridden point will appear in RED in the tables.
• ALL entries in priority array 1 to 16 MUST be set to “null” if normal operation using the internal control
functions and factory application program is to be used.
• Reinitializing the controller to factory default directly from the configuration interface at the controller WILL
release ANY and ALL write entries into priority array 1 to 16 on ALL objects.
Summary for Integrators
• AI’s, BI’s & MI’s are not writable and are typically only used for status
• Configuration properties and user HMI objects
o Write and bind to relinquish default if you want the local interface to still be able to modify these
settings
o Write and bind to priority array 4 to 16 if you desire to override the local application but not save that
override after a power reset
o Write and bind to priority array 1 to 3 if you desire to override the local application and save that
override after a power reset
• Status objects and physical hardware output objects
o Write and bind to relinquish default has no effect since the internal application program constantly
overrides the last network command value
o Write and bind to priority array 4 to 16 if you desire to override the local application but not save that
override after a power reset
o Write and bind to priority array 1 to 3 if you desire to override the local application and save that
override after a power reset
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TIPS AND THINGS YOU NEED TO KNOW
• Each controller is delivered from the factory with the default MAC address set at 254. At this value, the
BACnet® communication is not active and the device does not participate in the token pass. To enable the BACnet® communication, set the local MAC address configuration property of the controller to any valid value from 0 to 127.
• After the initial configuration of your device and if your BAS allows you to remove objects, you should remove
all configuration objects to prevent unnecessary polling of unused objects and to help speed up the network.
• In default mode of operation, the device automatically matches its baud rate to the baud rate of the network.
Automatic baud rate detection occurs when the MS-TP communication port is initialized (on power up). If the network speed is changed, the device keeps listening at the previously detected speed for 10 minutes before resuming auto-baud. Re-powering the devices forces the auto-baud.
• If the device goes off line, the following bound controller parameters are released:
Room Temperature
Outdoor Temperature
Occupancy
• The BACnet® Data Link layer has two key parameters, the device object name and the device object ID. The
device object name must be unique from any other BACnet® device object name on the BACnet® network (not just the MS-TP sub-network). The device object ID must be unique from any other BACnet® device object ID on the entire BACnet® network (not just the MS-TP sub-network).
• Time synchronization can be made through a network even if the controller does not support the full date.
Therefore, the device cannot claim conformance to the Device Management – Time Synchronization - B (DM­TS-B) service. The device object does not have the Local_Time or Local_Date properties.
• Device Name and Device ID properties are writable in Viconics device objects. Both properties can be
renamed from any BACnet® network management tool as long as the tool itself gives access to write to these properties.
TROUBLESHOOTING
Error / Fault Possible Cause Solution
Controller does not
come online
Two or more controllers have the same MAC address.
The MS-TP network has too many devices.
Too many devices were installed without any repeaters.
The MS-TP cable runs are broken Locate the break and correct the wiring.
MS-TP connections at the module are reversed
The controller does not have power Apply power to the controller
Modify each duplicate address to a unique number.
Do not exceed the maximum number of devices and maximum length allowed by the EIA-485 specifications.
Repeaters must be installed
Respect polarity of the wires on a MS-TP network.
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APPENDIX A
Important notice to all Niagara integrators
For all intents and purposes, BO95 / BO 4 High Speed Fan Output is used on all examples below. Where BO95 is the object BACnet instance and BO 4 is the terminal location on the controller
Using native Niagara Set Command for an object
Typically when BACnet device objects are discovered under a BACnet device in Niagara, objects are proxied under the local server database using standard Niagara device and object management processes.
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As such using the simple add object command, Niagara creates local proxy extensions of certain of the object properties including the BACnet object present value.
When using the “set” command under Niagara, the local server issues a BACnet write command to the con­troller without specifying any specific priority array from 1 to 16. As per the BACnet standard, when a control­ler receives an unspecified write command, the controller automatically assigns it to priority array level 16.
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As such, the controller now has an entry in priority array 16 of an object which effectively “overrides” it and by-passes the local control application program.
The know issue with this is that by default, Niagara does not poll or update any of the priority arrays of an object and it is NOT reflected under the proxied object property sheet.
So although you do see the real present value of the object under present value “Out” extension of the object, the displayed priority array 16 “In16” shows a value of NULL. But in effect, it is not NULL.
Viewing if a BACnet array 1 to 16 is actually being used
The only way to positively confirm if a point has an entry in any of the 16 priority array levels is to use the Niagara BACnet “Config” view. Simply open the view and add the objects as needed.
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Now to confirm if there is an entry, simply view the property sheet of the BACnet object.
In this view you will confirm an entry at level 16 or any other priority array level.
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If the point was overridden by accident and the normal controller operation is required and desired, simply set the overridden priority array to NULL to resume the controller normal operation under the relinquish default property value.
Binding to a point using the Fallback
Caution need to be taken when binding objects to specific server logic for central control and applications. The same cautions that apply to the “set” command apply to the binding of a point using the Niagara “fallback” proxy extension.
Binding a logic block or function to the “fallback” sets the same behaviour as using the Niagara “set” command. The local server issues a BACnet write command to the controller without specifying any
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specific priority array from 1 to 16. As per the BACnet standard, when a controller receives an unspecified write command, the controller automatically assigns it to priority array level 16.
As such, the controller now has an entry in priority array 16 of an object which effectively overrides it and by- passes the local control application program.
If the intent of the central logic block or sequence is simply to reset local values and still allow local users to change certain settings (such as setpoints and system mode for example) then the easiest way is to bind the logic block to the BACnet relinquish default property value as described below.
Adding the relinquish default object property for binding
In the Niagara point manager under the device, click on the plus (+) icon to expand all the options and properties of the desired object.
Locate the relinquish default property value and add it to the local server database of proxied objects.
Make sure it is added as a writable object and that it is enabled.
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Now when binding your logic block simply point to the relinquish default property of an object at the “fallback” value. This will directly issue the write command to the relinquish default property value insuring you are not locking down the application at priority array 16.
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