1. Manuals
  2. Brands
  3. Fox Thermal Manuals
  4. Measuring Instruments
  5. FT2A
  6. Manual

Fox Thermal FT2A Manual

Thermal mass flow meter & temperature transmitter, modbus & bacnet
Hide thumbs Also See for FT2A:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Instruction Manual
Fox Thermal
THERMAL MASS FLOW METER
& TEMPERATURE TRANSMITTER
Model FT2A
Modbus & BACnet
www.foxthermal.com | 399 Reservation Road Marina, CA. 93933
105435
Rev. D

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FT2A and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Fox Thermal FT2A

Summary of Contents for Fox Thermal FT2A

  • Page 1 Fox Thermal THERMAL MASS FLOW METER & TEMPERATURE TRANSMITTER Model FT2A Modbus & BACnet www.foxthermal.com | 399 Reservation Road Marina, CA. 93933 105435 Rev. D...
  • Page 2 Please note that Fox Thermal reserves the right to change and/or improve the product design and specification without notice. Fox FT2A Manuals: •...

  • Page 3: Table Of Contents

    Table Of Contents 1. Modbus Introduction Page 4 2. Modbus Protocol Page 4 3. RS485 Wiring for Modbus Page 5 4. FT2A Commands Supported by Modbus Page 6 5. Modbus Programming Page 12 6. BACnet Introduction Page 17 7. BACnet Protocol Page 16 8.

  • Page 4: Modbus Introduction

    Thank you for purchasing the model FT2A thermal gas mass flow meter from Fox Thermal. The model FT2A is one of the most technically advanced flow meters in the world. Extensive engineering effort has been invested to deliver advanced features, accuracy measurement performance and outstanding reliability.

  • Page 5: Rs485 Wiring For Modbus

    W1 to the TERM position. Disconnect the termination resistor on all other external Modbus devices. The termination resistor of the FT2A is disconnected by setting jumper W1 to the NC (Not Connected) position. Fig. 3.1: Modbus Wiring Pin 1 of termination resistor header...

  • Page 6: Ft2A Commands Supported By Modbus

    Command 04: Read input register. Command 06: Preset single register Read Holding Registers (command 03) This command reads the basic variable from the FT2A and has the following format: Request: <Meter Address> <Command code=03> <Register start address high> <Register start address low>...
  • Page 7 Modbus/BACnet FT2A Commands Supported by Modbus Register Modbus Data Type Scaling Comment Address Address 0x09 40010 Velocity (high) 0x0A 40011 Flow in Eng units * 10 Mass flow in selected units * 10 0x0B 40012 Flow in Eng units *100...
  • Page 8 Modbus/BACnet FT2A Commands Supported by Modbus Register Modbus Data Type Scaling Comment Address Address 0x30 40049 Total 24 hrs, Record day 5, low register Tot24hrs: Record day 5 0x31 40050 Total 24 hrs, Record day 5, high register Tot24hrs: Record day 5...
  • Page 9 Modbus/BACnet FT2A Commands Supported by Modbus Read Input Register (FT2A Status, Command 04) This command is used to report the FT2A status information. Request: <Meter Address> <Command code=04> <Register address =0> <Register address =0> <Register count =0> <Register count =1> <CRC high> <CRC low>...
  • Page 10 Modbus/BACnet FT2A Commands Supported by Modbus Table 4.3: Status 2 Bits Definitions for Command 04, Modbus Address 30002 Definition Comment Not used Not used Busy Busy Not used Not used Curve #2 Selected (for 2 gas curves only) Curve #2 Selected (for 2 gas curves only)
  • Page 11 Modbus/BACnet FT2A Commands Supported by Modbus 24 hours Event: Address=40018, data = 182 (0xB6) This command generates a 24 hours event, the same way as when the 24 hours counter rolls over. This may be useful to record total over a shorter period.

  • Page 12: Modbus Programming

    Modbus/BACnet Modbus Programming Enter the Programming Mode Press the F1 or the F2 key repeatedly, in the normal running mode, until the following screen is shown. This enters the programming mode: SET PARAMETERS? Press YES (F4) and then the following screen will prompt the user to enter the password if enabled: PASWD:_ Enter the correct password.
  • Page 13 Modbus/BACnet Modbus Programming Fig. 5.1: Menu Tree: Comm Selection and Programming Enter menu by scolling to display 4 and entering the password SET PARAMETERS I/O FLO DSP EXIT SET I/O COM I/O 420 EXIT None Modbus Comm=Modbus BACnet Ethernet Profibus DeviceNet 1200 19200...
  • Page 14 Modbus/BACnet Modbus Programming Communication Protocol and Parameters To program the communication parameters, press I/O (F1) key from the base menu. SET I/O EXIT Then press I/O (F1) again: SET I/O EXIT Then press COM (F1) to select communication parameters. Set Bus protocol for Modbus: Bus=Modbus Press NXT (F1) repeatedly until Modbus is selected as shown and then press OK (F4) to accept the setting.
  • Page 15 Modbus/BACnet Modbus Programming Selections are: "115200" "76800" "57600" "38400" “19200” “9600” “4800” “2400” “1200” Parity=EVEN Press NXT (F1) repeatedly until the correct selection is shown and then press OK (F4) to accept the setting. Selections are: “NONE” “ODD” “EVEN” Address=02 Press CHG (F1) to change the address and then press OK (F4) to accept the setting.

  • Page 16: Bacnet Protocol

    Thank you for purchasing the model FT2A thermal gas mass flow meter from Fox Thermal. The model FT2A is one of the most technically advanced flow meters in the world. Extensive engineering effort has been invested to deliver advanced features, accuracy measurement performance and outstanding reliability.

  • Page 17: Bacnet Introduction

    DM-DOB-B Dynamic Object Binding DM-DCC-B Device Communication Control DS-RPM-B ReadPropertyMultiple DM-RD-B Reinitialize Device MS/TP baud rates: 9600, 19200, 38400, 57600, 76800, 115200 FT2A Character sets supported: ANSI X3.4, UTF-8 Fox Thermal BACnet vendor ID: 650 For more information about BACnet visit http://www.bacnet.org/.

  • Page 18: Rs485 Wiring For Bacnet Ms/Tp

    W1 to the TERM position. Disconnect the termination resistor on all other external BACnet MS/TP devices. The termination resistor of the FT2A is disconnected by setting jumper W1 to the NC (Not Connected) position. Fig. 8.1: BACnet MS/TP Wiring...

  • Page 19: Bacnet Programming

    Modbus/BACnet Modbus/BACnet BACnet Programming Enter the Programming Mode Press the F1 or the F2 key repeatedly, in the normal running mode, until the following screen is shown. This enters the programming mode: SET PARAMETERS? Press YES (F4) and then the following screen will prompt the user to enter the password if enabled: PASWD:_ Enter the correct password.
  • Page 20 Model FT2A Model FT2A Modbus/BACnet BACnet Programming Fig. 9.1: Menu Tree: Comm Selection and Programming Enter menu by scolling to display 4 and entering the password SET PARAMETERS I/O FLO DSP EXIT SET I/O COM I/O 420 EXIT Comm=BACnet 9600...
  • Page 21 Model FT2A Modbus/BACnet BACnet Programming BACnet Communication Protocol and Parameters To program the communication parameters, press I/O (F1) key from the base menu. SET I/O EXIT Then press I/O (F1) again: SET I/O EXIT Then press COM (F1) to select communication parameters.
  • Page 22 Modbus/BACnet BACnet Programming MAC_ADD=23 Next select the MS/TP Max Master. The selection is from 0-127. MAX_MASTER=127 Next input the device object instance. Selection is from 0-4194303. ID=12531 Next enter the device object name (9 characters maximum). NAME=FT2A_FLOW Note: Power cycle is required for the new settings to take effect.
  • Page 23 Modbus/BACnet...

  • Page 24: Glossary Of Terms And Abbreviations

    Modbus/BACnet Definitions Glossary of Terms Address Application Data Unit and Definitions B-SS BACnet - Smart Sensor BIBB BACnet Interoperability Building Blocks Communication Cyclic Redundancy Check Not Connected Personal Computer Protocol Data Units Non Resetting Totalizer TERM Terminal...

  • Page 25: Index

    Index BACnet Programming, p. 19 Protocol, p. 16 Wiring, p. 18 Modbus FT2A Commands Supported, p. 6 Preset Single Register, p. 10 Programming, p. 12 Protocol, p. 4 Read Holding Registers, p. 6 Read Input Registers, p. 9 Status Bits, p. 9 Wiring, p.
  • Page 26 Information Caution Wiring Definition of Terms...

Table of Contents