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Appendix C: Johnson Controls N2 Protocol Implementation Conformance Statement

Unit Ventilator

Integration Guide

Serial Transmission Mode

Supported?

N2 Open

Slave (Slave is the Default Dipswitch setting)

Communication Types

Baud rates

Data Bits

Parity

Stop Bits

2-wire EIA-485

9600

None

Network Point Types

Analog Inputs (AI)

Binary Inputs (BI)

Analog Outputs (AO)

Binary Outputs (BO)

Internal Floats (ADF)

Internal Integers (ADI)

Internal Bytes (BD)

Protocol Commands

Identify Device Type

Write Analog Input

Sync Time

Write Binary Input

Poll Without Acknowledge

Write Analog Output

Poll With Acknowledge

Write Binary Output

Read Analog Input

Write Internal Parameter

Read Binary Input

Override Analog Input

Read Analog Output

Override Binary Input

Read Binary Output

Override Internal Parameter

Read Internal Parameter

Override Release Request

Appendix C: Johnson Controls N2 Protocol Implementation Conformance

Statement

Содержание Carrier Unit Vent Open

Страница 1: ...V Ve en nt ti il la at to or r I In nt te eg gr ra at ti io on n G Gu ui id de e CARRIER CORPORATION 2019 A member of the United Technologies Corporation family Stock symbol UTX Catalog No 11 808 513...

Страница 2: ...ur local Carrier office Important changes are listed in Document revision history at the end of this document CARRIER CORPORATION 2019 All rights reserved throughout the world i Vu is a registered tra...

Страница 3: ...for LonWorks communication 15 Troubleshooting LonWorks communication 16 Start up 16 Sequence of Operation 17 Scheduling 17 Supply fan 18 Cooling 19 Heating 20 Mixed air damper Modulating 22 Mixed air...

Страница 4: ...rnal application programming provides optimum performance and energy efficiency Unit Vent enables the unit to run in 100 stand alone control mode or it can communicate to the Building Automation Syste...

Страница 5: ...Contact Fan Status Dry Contact N A Freezestat BI IN 6 1 Gnd Low Limit Thermostat Dry Contact N A OA Damper AO AO 1 2 Gnd Mixed Air Damper 0 10 Vdc 2 10 Vdc N A Valve F B AO AO 2 4 Gnd Face Bypass Damp...

Страница 6: ...Cnet MS TP N2 Modbus and through the Option Card port for the LonWorks Option Card NOTES Changing protocol requires no programming or point assignment by the installer or operator Power must be cycled...

Страница 7: ...address Set the Tens 10 s switch to the tens digit of the address and set the Ones 1 s switch to the ones digit EXAMPLE If the controller s address is 25 point the arrow on the Tens 10 s switch to 2...

Страница 8: ...imizes MS TP network communications by preventing token passes and poll for master requests to non existent Master nodes In the above example MAC address 16 knows to pass the token back to MAC address...

Страница 9: ...the Equipment Touch interface navigate to the Properties Menu screen and click Login NOTE The following graphic is generic and not specific to your system 2 Type Touch for the password and click Done...

Страница 10: ...tlined in this manual Review all of the steps and use the following list to check your settings Verify accuracy of the following Hardware settings for BACnet MS TP 8 Data bits No Parity and 1 Stop bit...

Страница 11: ...it Vent recognizes its address only after power has been cycled 3 Set communications selector for BACnet ARC156 4 Set the both DIP switches 3 and 4 OFF for BACnet ARC156 NOTE The baud rate for BACnet...

Страница 12: ...controller recognizes physical changes DIP switches rotary switches and jumpers upon power up If RX LED is solid then the terminations are incorrect If the network has greater than 32 devices or excee...

Страница 13: ...00 feet 610 meters or 32 nodes Devices should be daisy chained and not star wired Attach the drain shield wire to both ends of the network segment and through every controller NOTE Use the same polari...

Страница 14: ...hes rotary switches and jumpers upon power up Refer to Appendix A for the Network Points list Refer to Appendix D for the Protocol Implementation Conformance Statement Software settings defined throug...

Страница 15: ...d 22 AWG shielded twisted pair wire EIA 485 Maximum wire length 2000 feet 610 meters or 32 nodes Devices should be daisy chained and not star wired Attach the drain shield wire to both ends of the net...

Страница 16: ...y switches and jumpers upon power up Modbus Exception Codes that might be returned from this controller Codes Name Description 01 Illegal Function The Modbus function code used in the query is not sup...

Страница 17: ...ique address Set the Tens 10 s switch to the tens digit of the address and set the Ones 1 s switch to the ones digit EXAMPLE If the controller s address is 25 point the arrow on the Tens 10 s switch t...

Страница 18: ...system s network layout diagram This is done using the device s unique Neuron ID A network management tool such as Echelon s LonMaker is used to commission each device as well as to assign addressing...

Страница 19: ...nterfaces to start up access information read sensor values and test the controller This interface Provides a Field Assistant application Runs on a laptop that connects to controller s Local Access po...

Страница 20: ...source can be changed to one of the following Occupancy Schedules The controller is occupied 24 7 until you configure a time schedule using the Equipment Touch Field Assistant or the i Vu application...

Страница 21: ...he space temperature failure alarm condensate overflow alarm or the test mode is active the fan shuts down immediately regardless of occupancy state or demand Automatic Fan Speed Control The Unit Vent...

Страница 22: ...Fan Status Option The optional input can be configured as either an occupancy input or a fan status input If configured as fan status the controller compares the status of the fan to the desired comma...

Страница 23: ...d Water The control can operate a modulating 0 10 Vdc or 2 10 Vdc type F B damper and an optional 2 position NO or NC chilled water valve to maintain the desired cooling setpoint The damper modulates...

Страница 24: ...rolled to maintain the Heating Control Setpoint during heating and will not exceed the Maximum Heating SAT limit If the fan is off or a fan failure alarm occurs the valve modulates to maintain the Sup...

Страница 25: ...is Modulating Space temperature reading is valid Supply Fan must be on and not in Alarm OAT is valid Heat mode is not active Fire Smoke Detector FSD is Normal OAT is less than Damper Lockout Temperatu...

Страница 26: ...monitors the CO2 level and compares it to the configured setpoints and adjusts the minimum damper position as required The control provides proportional ventilation to meet the requirements of ASHRAE...

Страница 27: ...DCV Override These can be adjusted to meet various specifications Demand Limiting The Unit Vent accepts 3 levels of demand limit from the network In response to a demand limit the unit decreases its h...

Страница 28: ...interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at h...

Страница 29: ...r in the navigation tree and go to Properties BACnet Objects tab When an i Vu Open controller or a third party system writes to any of the system points you must use BACnet Priority Level 16 and the v...

Страница 30: ...ned the system point to its default value Therefore a BAS should never read back the system point s value to confirm the commanded value was successfully received To confirm a write refer to the table...

Страница 31: ...Default Value BACnet Point Name BACnet Object ID Modbus Register Type Modbus Register Return Air Temperature R F ra_temp AV 1010 Input Register Float 65 Setpoint R W F occ_cl_stpt AV 3001 Holding Reg...

Страница 32: ...AV 2026 Input Register Float 37 Occ Override Delay R W min 15 occ_ovr_delay AV 9028 Holding Register Float 63 Outdoor Air Temperature R F oa_temp AV 1003 Input Register Float 87 Override Time Remainin...

Страница 33: ...7012 Discrete Input 39 Occupancy Status R Unoccupied Occupied occ_status BV 2008 Discrete Input 18 Outdoor Air Temperature R Normal Alarm oat_alarm BV 7036 Discrete Input 19 Reset Filter Alarm R W Off...

Страница 34: ...Float 147 Maximum Heating SAT R W F 105 sat_ht_max AV 83004 Holding Register Float 41 Minimum Cooling SAT R W F 50 sat_cl_min AV 83003 Holding Register Float 61 Space Temp Source R 1 Sensor Failure 2...

Страница 35: ...ADF 74 nvoOAVntDmpr Output active default Damper Setpoint Override Value R W F F ADF 19 nviDmpSetOvr Input passive default Economizer Purge Min Pos R W Open Open ADF 5 nviEcnPrgMin Input passive defa...

Страница 36: ...Output active default Indoor Air Quality R Normal Alarm BI 33 nvoIAQAlm Output active default Indoor Air Quality Sensor R Normal Alarm BI 37 nvoIAQSensor Output active default Low Space Temperature R...

Страница 37: ...default System Mode R 1 Off 2 Fan Only 3 Economize 4 Cooling 5 Heating 6 Cont Fan 7 Test 8 Start Delay 9 Temper SAT 10 Fire Shutdown 11 Shutdown 12 IAQ Override 12 Pre occ Purge ADI 13 nvoOpMode Outp...

Страница 38: ...IER CORPORATION 2019 Integration Guide All rights reserved 35 The PIC statements are updated regularly Please refer to the BACnet website http www bacnetinternational net catalog index php m 28 for th...

Страница 39: ...Is static device binding supported This is currently necessary for 2 way communication with MS TP slaves and certain other devices XX Yes Networking Options Router Clause 6 List all routing configura...

Страница 40: ...Inputs BI Analog Outputs AO Binary Outputs BO Internal Floats ADF Internal Integers ADI Internal Bytes BD Protocol Commands Identify Device Type Write Analog Input Sync Time Write Binary Input Poll W...

Страница 41: ...ete Outputs single 00001 09999 06 Preset Single Register Write Holding Registers single 40001 49999 15 Force Multiple Coils Write Discrete Outputs 00001 09999 16 Preset Multiple Coils Write Holding Re...

Страница 42: ...SNVT_speed_mil SNVT_alarm_2 SNVT_evap_state SNVT_motor_state SNVT_state SNVT_amp SNVT_ex_control SNVT_muldiv SNVT_state_64 SNVT_amp_ac SNVT_file_pos SNVT_multiplier SNVT_str_asc SNVT_amp_f SNVT_file_...

Страница 43: ...fr_mode SNVT_length_micr SNVT_res SNVT_volt_dbmv SNVT_defr_state SNVT_length_mil SNVT_res_f SNVT_volt_f SNVT_defr_term SNVT_lev_cont SNVT_res_kilo SNVT_volt_kilo SNVT_density SNVT_lev_cont_f SNVT_rpm...

Страница 44: ...JN E RD 5 22 18 Troubleshooting BACnet MS TP Troubleshooting N2 Troubleshooting ARC156 Corrected BACnet Device Instance number C TS RD F 1 11 18 Sequence of Operation Supply Fan Section added on Conf...

Страница 45: ...CARRIER CORPORATION 2019 A member of the United Technologies Corporation family Stock symbol UTX Catalog No 11 808 513 01 11 19 2019...

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