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Biddle Modbus Manual

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Manual
Modbus / BACnet
Model SR IndAC2 NOZ2
English
for software version U3.0 – 01
Original Manual
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  • Page 1 Manual Modbus / BACnet Model SR IndAC2 NOZ2 English for software version U3.0 – 01 Original Manual...
  • Page 2 Required basic knowledge How to read this manual Installation Special points Connecting the gateway for BACnet (accessory) Connecting the unit to Modbus Entering the Modbus node address Activating the connection Configuring the gateway for BACnet (accessory) Frequently used register addresses...

  • Page 3: About This Manual

    (‘Modbus RTU Slave’ or ‘BACnet’). This manual is not a guide to this protocol. For more information about Modbus, please refer to the spec- ifications and guidelines that are available on the website of the Modbus Organization: www.modbus.org.
  • Page 4 Characteristics of the Modbus connection (baud rate, parity, stop bit). Modbus node address Number by which the Modbus system recognises the unit. register address Position (number) in the Modbus system where the value/vari- able can be found (also called the Modbus address).
  • Page 5 An auto master unit has a control circuit board for automatic control and is selected in order to attend to the global Biddle regulation. This unit also regulates the communication in a master-slave system.

  • Page 6: Installation

    . . Installation Special points 2.1.1 Modbus/BACnet The unit is designed for communication with a Modbus sys- tem. With the aid of an IntesisBox Gateway, it is also possible to communicate with a BACnet system. 2.1.2 Multiple units on Modbus If you connect multiple units to the Modbus system, various set-ups are possible.

  • Page 7: Communication Parameter

    DATA Parity none Stop bits The turnaround time between the unit and Modbus is 4.2 msec. 2.1.4 Wiring A twisted-pair cable must be used for connection to the Mod- bus system. The cable must also have a third core for the GND (grounding).
  • Page 8 2.3.2 Connecting the unit to Modbus. Connecting the unit to Modbus 2.3.1 Accessing the control circuit board For SR: The connection for Modbus is on the top of the unit. For IndAC and NOZ : The connection for Modbus is on the control circuit board in the unit.
  • Page 9 ODBUS MANUAL NSTALLATION 2.3.2 Connecting the unit to Modbus 1. Lay a cable between the Modbus system and the unit. In the case of BACnet: Lay the cable between the gate- way and the unit. 2. Attach the cable to the unit, in accordance with the wiring diagram supplied: In the case of BACnet: Use the circuit diagram below.
  • Page 10 Entering the Modbus node address The default value for the Modbus node address is 1. Depend- ing on the Modbus network, it may be necessary to change this. This can be done via the dip switches on the control cir- cuit board.
  • Page 11 Note: Note down the residual values from left to right. 2.4.2 Entering the Modbus node address Enter the code of the Modbus node address with the aid of the 8 dip switches 1 on the control circuit board. • 0 = OFF •...
  • Page 12 / BAC NSTALLATION ODBUS Activating the connection 1. Connect the possible gateway for BACnet (accessory) to the mains supply, making use of the adapter. Warning: In the event that the adapter is absent: Connect the gateway to the mains supply in accordance with the locally applicable requirements.
  • Page 13 Listed in chapter are all regis- ter addresses. Note: Functions can be adjusted both on the b-touch control panel and via Modbus. The most-recently sent signal is valid. Note: Some settings can only be adjusted via the b-touch control panel.
  • Page 14 414 has been set to 0 (changes via b-touch permitted) and apply only until the start time of the next switching moment by Modbus. 209 Discharge temperature setpoint. The required discharge temperature is calculated by the auto- matic control.
  • Page 15 ODBUS MANUAL REQUENTLY USED REGISTER ADDRESSES Other frequently used register addresses to be set Other register addresses to be set are: REGISTER DESCRIPTION CONTROL UNIT MINIMUM MAXIMUM DEFAULT ADDRESS Turning the unit ON and OFF Turning the heating on and off Manual setting of the strength Adjusting the automatic strength control...

  • Page 16: Menu Parameter

    With the manual setting, you can select the strength. To achieve maximum comfort with minimum energy consump- tion, Biddle recommends selecting the lowest strength at which the airflow touches the ground. This setting may possi- bly need to be changed during the course of the day.
  • Page 17 ODBUS MANUAL REQUENTLY USED REGISTER ADDRESSES MENU PARAMETER REGISTER ADDRESS DESCRIPTION VALUE Select modes 2 = allowed: automatic (Options for modes) 3 = allowed: manual, automatic Automatic or manual control 1 = automatic Current status Caution: Use this address only for reading out.
  • Page 18 / BAC REQUENTLY USED REGISTER ADDRESSES ODBUS 103 Ventilation valve position Only with NOZ units with ventilation (types 25V and 50V) Depending on the settings, the unit can blow a set percentage of ventilation air. Note: In menu parameter 35.1, ‘Ventilation control’, of the b-touch control panel, one can enter whether the valve position can be set on a percentage basis or whether it can only be either entirely open or...
  • Page 19 . . All register addresses Note: It may occur that the system applied uses a value of 1 higher than the register addresses given here. In that event, you use 101 for register address 100, for example. Note: Menu parameters 0 – 1 are functions in the home screen of the b-touch control panel.
  • Page 20 / BAC LL REGISTER ADDRESSES ODBUS Status bits 0 (+1) = output 1 outputs 1 (+2) = output 2 2 (+4) = cooling 3 (+8) = heating 4 (+16) = on 5 (+32) = room con- trol active (menu parameter 45.1 (105) is not active) 6 (+64) = output 3 45.1...
  • Page 21 ODBUS MANUAL LL REGISTER ADDRESSES Air pressure, filter 0.1 Pa sensor Position of water valve for cooling (not applicable) Heating output Temperature sensor 0.1°C X354 For SR H3: Medium sensor For IndAC : Room temperature For NOZ ventila- tion: Inlet tempera- ture of ventilation air Input voltage, ana- 0.01 V...
  • Page 22 / BAC LL REGISTER ADDRESSES ODBUS For SR: Unit 0.1°C temperature (aver- age value of all units, without calibration correction menu 9) For IndAC : same as 205 For SR and 0.1°C IndAC : current outdoor tempera- ture (IR sensor, sen- sor X540 or temperature table (highest of all units))
  • Page 23 ODBUS MANUAL LL REGISTER ADDRESSES (not applicable) 0.1°C Discharge tempera- 0.1°C ture (average value in the case of multiple units) Discharge tempera- 0.1°C ture setpoint. (calcu- lated on the basis of the PID factors) Temperature sensor 0.1°C X354 (highest value in the case of multiple units) For SR H3:...
  • Page 24 / BAC LL REGISTER ADDRESSES ODBUS (not applicable) (not applicable) Software version, control circuit board (lowest value in the case of multiple units) (not applicable) Software version b- touch control panel (not applicable) Number of units (not applicable) Energy consumption, For SR 65536 total...
  • Page 25 ODBUS MANUAL LL REGISTER ADDRESSES Menu settings communication b- 0= not necessary touch necessary 1= necessary Reset error messages 0= read 1= write reset Reset user menu set- tings (not applica- ble) Reset user settings Reset system Reset default out- door temperature table Filter...
  • Page 26 / BAC LL REGISTER ADDRESSES ODBUS Minimum air temper- 0.1°C -100 ature Night temperature 0.1°C Night temperature SR and sensor 0= no night control 1= night control implemented IndAC 0= no night control 1= night control with unit sensor 5= night control with floor sensor Calibration of room 0.1°C...
  • Page 27 ODBUS MANUAL LL REGISTER ADDRESSES Door response 25.1 Door response: auto- 0= immediate matic 1= gradual 25.2 Fan speed in event of SR: 20 closed door IndAC 25.3 Room temperature 0= off control in event of 1= on closed door 25.4 Fan speed, room tem- perature control in...
  • Page 28 / BAC LL REGISTER ADDRESSES ODBUS 35.3 Only for NOZ ventilation: Mini- mum fan speed during ventilation 35.4 Only for NOZ ventilation: Maxi- mum fan speed during ventilation Temperature Outdoor tempera- 0.1°C -300 ture, heating OFF Outdoor tempera- 0.1°C ture, fan OFF Outdoor tempera- 0.1°C ture, unheated usage...
  • Page 29 61.1 Function, output 1 see table, unit manual 61.2 Function, output 2 61.3 Function, output 3 Modbus function, 0 = off output 1 (only if out- 1 = on put 1 has no function) 2 = not possible (not used)
  • Page 30 / BAC LL REGISTER ADDRESSES ODBUS current level (not used) Voltage, output 2 0.1V (not used) current level (not used) Sensors 0,1,3= unit sensor Indoor temperature sensor 2 = floor sensor X354 (IndAC 4= average, unit and floor sensor (IndAC 5= average, unit and sensor in control panel (SR)
  • Page 31 ODBUS MANUAL LL REGISTER ADDRESSES Hysteresis, boost 0.1°C function Hysteresis, room 0.1°C temperature Biddle specific parameters Time constant, inlet min. temperature Time constant, door min. open ratio K factor NOZ25 10000 2000 K factor NOZ50 10000 4400 P factor, room tem-...
  • Page 32 / BAC LL REGISTER ADDRESSES ODBUS 74.1 IR sensor: correction 0.1°C -100 to outdoor tempera- ture 74.2 IR sensor: correction 0.1°C -100 to room temperature 74.5 Reset IR sensor 0= always read 1= reset write values IR sensor PIRA IR parameters (Bid- 1000 dle setting) PIRB...
  • Page 33 ODBUS MANUAL LL REGISTER ADDRESSES Turning the heating 0 = heating off on and off 1 = automatic control Current status active Caution: Use this address only for read- ing out. Use 421 for writing. Manual setting of the strength Current status Caution: Use this address only for read-...
  • Page 34 / BAC LL REGISTER ADDRESSES ODBUS Ventilation modes 0 = 100% recircula- setting tion 1 = choice of ventila- tion percentage 2 = 100% recircula- tion / 100% ventila- tion Ventilation valve posi- tion (not applicable) (not applicable) Turning the unit ON 0 = permitted and OFF (change of value**)
  • Page 35 (not applicable) (not applicable) Turning the unit ON 0 = off and OFF 1 = on Modbus setpoint 2 = holiday setting (not applicable) Turning the heating 0 = heating off on and off 1 = automatic control...
  • Page 36 LL REGISTER ADDRESSES ODBUS (not applicable) (not applicable) For SR and 0.1°C -500 IndAC : Outdoor temperature meas- ured via Modbus (note: update every 60 min.) For NOZ : Room 0.1°C -500 temperature meas- ured via Modbus (note: update every 60 min.)
  • Page 37 * rw = read & write (read and write) ** change of value = changes via the b-touch control panel apply only until the starting time of the next switching moment by Modbus. Manual for software version U3.0 – 01 (22-06-2017)

  • Page 38: Register Types

    / BAC LL REGISTER ADDRESSES ODBUS Register types ENGTH WORDS ESCRIPTION int16 Signed Integer (–32768 to 32767) en-38...
  • Page 39 The unit has an incorrect Modbus • Check the unit’s Modbus node node address. address. The baud rate of the Modbus sys- • Set the Modbus system to the tem has been set wrongly. correct baud rate. Default value is 9600.
  • Page 40 / BAC RRORS ODBUS Reading out errors 5.2.1 Reading out errors Errors are recorded with a binary code in two registers. These are registers 216 and 217. In the log file “log_error.csv”, which can be read out with a USB flash drive, the errors are indicated with a numeric value. 5.2.2 Error codes registers For an explanation of the error messages, please refer to the manual for the unit.
  • Page 41 ODBUS MANUAL RRORS Error codes register 217/ErrorFlags[1] [1]; RROR LAGS OGERROR ODBUS ALUE ALUE ESCRIPTION Filters need cleaning No power supply Outdoor temperature sensor – replace battery Indoor temperature sensor – replace battery Faulty outdoor temperature sensor Faulty pipe sensor Faulty wireless outdoor temperature sensor Faulty wireless indoor temperature sensor Faulty room sensor (CA IndAC...
  • Page 42 . . Addresses If you have any comments or queries relating to this product, please do not hesitate to contact your Biddle branch. Biddle bv Biddle Air Systems Ltd. Biddle France P.O. Box 15 St. Mary’s Road, Nuneaton 21 Allée des Vendanges...
  • Page 43 ......42 Modbus......8 multiple master .

  • Page 44: Copyright And Trademarks

    It helps us to improve the documentation still further. For more information If you have any comments or queries relating to this product, please do not hesitate to contact Biddle. You will find the contact information for your Biddle branch in chapter Addresses.

This manual is also suitable for:

BacnetSr indac2 noz2

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