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Device Object Table    

 

 

 

 

 

 

 

 

 

 

 

 
 

Object Name 

Type and 

Instance 

Object Property 

Controller Parameter 

VT76xxX5x00B Device  Object_Identifier 

Property 75 (R,W) 

Unique ID number of a device on a network 

 

 Object_Name 

Property 77 (R,W) 

Unique name of a Device on a network 

 

 Model 

Name 

Property 70 (R) 

Controller Model number 

 

 Firmware 

Revision 

Property 44 (R) 

Current BACnet firmware revision used by the 
controller 

 

 Protocol 

Version 

Property 98 (R) 

Current BACnet firmware protocol version 

Default is Version 1 

 

 Protocol 

Revision 

Property 139 (R) 

Current BACnet firmware protocol revision 

Default is Version 2 

 

 

Max ADPU Length 

Property 62 (R) 

Maximum ADPU Length accepted 

Default is 244 

 

 ADPU 

Timeout 

Property 10 (R) 

ADPU timeout value 

Default is60 000 ms 

 

 Application-

Software-Version 

Property 12 (R) 

Controller base application software version 

Default is based on current released version 

 

 

Max_Master (R,W) 

Maximum master devices allowed being part of 
the network. 0 to 127, default is 127 

  

MS/TP_Address 
Property 1001 (R,W) 

BACnet MS-TP MAC Address. Proprietary 
attribute. Default is as assigned by configuration 

  

MS/TP_Baud_Rate 
Property 1002 (R,W) 

BACnet MS-TP Baud-Rate. Proprietary attribute. 

Range is: 1 = 9.6 KBps, 2 = 19.2 KBps, 3 = 38.4 
KBps, 4 = 76.8 KBps and 5 = Auto Baud Rate. 
Index 5 is 

Write only

. Reading attribute will state 

current Baud rate used. Writing index 1 to 4 will fix 
the Baud rate to the desired value. 

 

Содержание VT76 Series

Страница 1: ...1 PIR Ready VT76xx Series With Without Scheduling Controllers For Commercial HVAC Applications BACnet Integration Manual ITG VT76xx PIR BAC E02 028 6015_R2 Issue Date January23 2011...

Страница 2: ...r without a factory installed PIR cover Fig 1 VT7600 Series The additional following documentation is available on www viconics com Detailed information on the controller VT76xxX5x00x is available on...

Страница 3: ...Application Specific Controller B ASC The BACnet controller series supports the following BACnet Interoperability Building Blocks BIBBs Application Service Designation Data Sharing Read Property B DS...

Страница 4: ...ADPU Length Property 62 R Maximum ADPU Length accepted Default is 244 ADPU Timeout Property 10 R ADPU timeout value Default is60 000 ms Application Software Version Property 12 R Controller base appl...

Страница 5: ...e R W Outdoor Temperature AV 9 Present_Value R W Outdoor Temp Override BV 10 Present_Value R W Room Humidity AV 11 Present_Value R W Room Humidity Override BV 13 Present_Value R W Occupancy Command MV...

Страница 6: ...tput AV 22 Present_Value R Analog Heat Output AV 35 Present_Value R Controller Status GRP 23 Present_Value R AUX BI 24 Present_Value R G Fan BI 25 Present_Value R Y1 Cool BI 26 Present_Value R Y2 Cool...

Страница 7: ...d Heat Setpoint AV 42 Present_Value R W Occupied Cool Setpoint AV 43 Present_Value R W Unoccupied Heat Setpoint AV 44 Present_Value R W Unoccupied Cool Setpoint AV 45 Present_Value R W Fresh Air Level...

Страница 8: ...t_Value R W Power up Delay AV 60 Present_Value R W Temporary Occ Time MV 61 Present_Value R W Fan Control BV 62 Present_Value R W Anticycle MV 63 Present_Value R W Fan Purge Delay BV 64 Present_Value...

Страница 9: ...r Changeover Setpoint AV 77 Present_Value R W Economizer Minimum Position AV 78 Present_Value R W Mechanical Cooling Enabled BV 79 Present_Value R W Mixed Air Setpoint AV 80 Present_Value R W Heatpump...

Страница 10: ...Dehumidification Lockout Functions MV 92 Present_Value R W Dehumidification Output Status BI 93 Present_Value R Humidification Model Configuration Options GRP 94 Present_Value R AI1 Config BV 94 Prese...

Страница 11: ...B VT7656B5x00B VT7607B5x00B VT7657B5x00B VT7600H5x00B VT7652H5x00B VT7600W5x00B VT7652W5x00B VT7606E5x00B VT7656E5x00B VT7600F5x00B VT7652F5x00B Minimum CO2 Level AV 100 Present_Value R W Humidifier O...

Страница 12: ...chedule Weekly_schedule Present_Value Weekly_Schedule a The following AV s are defined as read only When Out_of_Service properties is set to true the Present_Value if written is not derived to the app...

Страница 13: ...0 F 37 5 80 F 26 5 C Heating Setpoint Limit AV 48 40 F 4 5 C 90 F 32 C 90 F 32 C Cooling Setpoint Limit AV 49 54 F 12 C 100 F 37 5 54 F 12 C Heating Lockout Temperature AV 50 15 F 26 C 120 F 49 C 120...

Страница 14: ...V 96 0 100 N A Supply Heat Lockout Temperature AV 96 15 F 26 C 120 F 49 C 32 F 0 C Humidification High Limit Spt Setpoint AV 97 50 90 85 Supply PI Heat Demand AV 97 0 100 N A Low RH Setpoint AV 98 10...

Страница 15: ...Cool BI 27 Off On Off W1 Heat BI 28 Off On Off W2 Heat BI 29 Off On Off Reversing Valve BI 30 Off On Off DI 1 Status BI 31 Not Activated Activated Not Activated DI 2 Status BI 32 Not Activated Activat...

Страница 16: ...79 Off On Off Comfort Mode BV 84 Comfort Economy Comfort High CO2 Alarm BI 84 Off On Off Reversing Valve Configuration BV 85 Normally Cool Energized in Heating Normally Heat Energized in Cooling Norma...

Страница 17: ...2 Auto 3 Cool 4 Heat Fan Mode MV15 1 On Smart 2 Auto 3 Smart Keypad Lockout MV18 1 Level 0 Level 0 2 Level 1 3 Level 2 Effective Occupancy MV 34 1 Occupied Depends on local occupancy 2 Unoccupied 3 Te...

Страница 18: ...None None 2 RemNSB 3 RemOVR 4 Filter 5 Service 6 Fan lock Proportional Band MV 67 1 2 2 F 0 6 C 2 2 3 3 F 1 2 C 3 4 4 F 1 7 C 4 5 5 F 2 2 C 5 6 6 F 2 8 C 6 7 7 F 3 3 C 7 8 8 F 3 9 C Event Display MV71...

Страница 19: ...ode MV15 Occupied Heating Setpoint AV42 Unoccupied Heating Setpoint AV44 Occupied Cooling Setpoint AV43 Unoccupied Cooling Setpoint AV45 Restrict user access to thermostat Keypad Lockout MV18 Outdoor...

Страница 20: ...fective Occupancy MV34 System Mode RTU MV14 or System Mode HPU MV13 G Fan BI25 Y1 Cool BI26 Y2 Cool BI27 W1 Heat BI28 W2 Heat BI29 or Reversing Valve BI30 Economizer Output AV22 if available Aux BI24...

Страница 21: ...controllers For clarity we will use the term Device to represent any product with an active EIA 485 network connection including Viconics and non Viconics controllers Summary Specifications Parameter...

Страница 22: ...ystems with long lengths benefit from using low capacitance cable i e 17pF ft or lower Network Configuration EIA 485 networks use a daisy chain configuration A daisy chain means that there is only one...

Страница 23: ...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 40...

Страница 24: ...ate daisy chains branch from each repeater Do not install repeaters in series as this may result in network reliability problems Figure 6 demonstrates an incorrect use of a repeater in an EIA 485 netw...

Страница 25: ...OL resistor value Network Adapter The polarity of the connection to the cable is important From one module to the other it is important that the same coloured wire be connected to plus or and the othe...

Страница 26: ...ce of a network N A Right after power is applied 2 long blinks and then no blinking Polarity has been reversed at the module Reverse polarity at the module Table 2 Status LED condition and possible so...

Страница 27: ...rogram Otherwise any read or write request will occur at the Supervisory Controller s program scan rate which might as well be in hundredths of milliseconds This can easily bog down a network as singl...

Страница 28: ...the MS TP communication port is initialized on power up If the network speed is changed the device will keep listening at the previously detected speed for 10 minutes before resuming auto bauding Re...

Страница 29: ...Do not exceed the maximum number of devices and maximum length allowed by the EIA 485 specifications Too many devices were installed without any repeaters Repeaters need to be installed as specified...

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