Sierra InnovaSonic 207i BACnet User manual

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InnovaSonic®207i BACnet
Instruction Manual
BACnet Device Specification for
207i Ultrasonic Liquid Flow Meter
Version IM-207i-BACnet V2.3/19

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Phone [phone] [phone] Fax [phone]
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© COPYRIGHT SIERRA INSTRUMENTS 2019
No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into
any human or computer language, in any form or by any means, electronic, mechanical, manual, or otherwise, or disclosed to
third parties without the express written permission of Sierra Instruments. The information contained in this manual is subject
to change without notice.
TRADEMARKS
InnovaSonic® is a Registered Trademark of Sierra Instruments, Inc. Other product and company names listed in this manual
are trademarks or trade names of their respective manufacturers.

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Table of Contents
1 Introduction ....................................................................................................................................7
1.1 BACnet MS/TP Description .........................................................................................................................................7
2 BACnet Module Installation............................................................................................................8
2.1 Overview RS-485 Network ..........................................................................................................................................8
2.2 Baud Rate and MAC Address Configuration ...............................................................................................................9
2.3 Attaching Module Board to Network............................................................................................................................9
2.4 BACnet Field Installation...........................................................................................................................................10
3 InnovaSonic 207i Com Settings ................................................................................................... 11
3.1 Configure Baud Rate and MAC Address with Smart Interface Portal (SIP) .............................................................. 11
3.2 Configure Baud Rate and MAC Address Using Local Display and Keypad ..............................................................13
4 Supported BACnet Services/Objects (PICS)................................................................................16
4.1 Acronyms and Definitions..........................................................................................................................................16
4.2 Supported BACnet Services/Objects ........................................................................................................................17
4.3 BACnet Supported Device, Object and Property Table.............................................................................................17
4.4 Analog Input and Analog Value .................................................................................................................................27
5 BACnet Engineering Units ...........................................................................................................29
5.1 Units Not Supported By BACnet ...............................................................................................................................29
6 Troubleshooting Tips....................................................................................................................31
6.1 Other Troubleshooting Tips .......................................................................................................................................31

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Warnings in This Manual
“Warning,” “Attention,” and “Note” statements are used throughout this manual to draw your attention to important
information.
General Warning Information
Symbol Key
Symbol
Symbol
Meaning
Descripition
Warning
“Warning” statements appears with information that is important to
protect people and equipment from damage. Pay very close attention
to all warnings that apply to your application. Failure to comply with
these instructions may damage the meter and cause personal
injury.
Caution
“Attention” indicates that failure to comply with stated instructions
may result in damage or faulty operation of the meter.
Note
“Note” indicates that ignoring the relevant requirements or
precautions may result in flow meter damage or malfunction.
Symbol
Descripition
To avoid potential electric shock, follow National Electric Code safety practices or your local code when wiring this
unit to a power source and to peripheral devices. Failure to do so could result in injury or death. All AC power
connections must be in accordance with published CE directives.
Do not power the flow meter with the sensor remote (if applicable) wires disconnected. This could cause over-heating of
the sensors and/or damage to the electronics
All wiring procedures must be performed with the power off.
Before attempting any flow meter repair, verify that the line is de-pressurized Agency approval for hazardous location
installations varies between flow meter models. Consult the flow meter nameplate for specific flow meter approvals
before any hazardous location installation.

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Receipt of System Components
When receiving a Sierra mass flow meter, carefully check the outside packing carton for damage incurred in
shipment. If the carton is damaged, notify the local carrier and submit a report to the factory or distributor.
Remove the packing slip and check that all ordered components are present. Make sure any spare parts or
accessories are not discarded with the packing material. Do not return any equipment to the factory without
first contacting Sierra Customer Service .
Technical Assistance
If you encounter a problem with your flow meter, review the configuration information for each step of the
installation, operation, and setup procedures. Verify that your settings and adjustments are consistent with
factory recommendations. Installation and troubleshooting information can be found in the InnovaSonic 207i
Product Instruction Manual.
If the problem persists after following the troubleshooting procedures outlined in the 207i product manual,
contact Sierra Instruments by fax or by email (see inside front cover for contact information). For urgent phone
support, you may call [phone] or [phone] between 8:00 a.m. and 5:00 p.m. PST. In Europe,
contact Sierra Instruments Europe at [phone]. In the Asia-Pacific region, contact Sierra Instruments
Asia at [phone]. When contacting Technical Support, make sure to include this information:
• The flow range, serial number, and Sierra order number (all marked on the meter nameplate)
• The software version (visible at start up)
• The problem you are encountering, and any corrective action taken
• Application information (gas, pressure, temperature and piping configuration)
General Caution Information
The AC wire insulation temperature rating must meet or exceed 80°C (176°F).
Printed circuit boards are sensitive to electrostatic discharge. To avoid damaging the board, follow these precautions to
minimize the risk of damage:
- before handling the assembly, discharge your body by touching a grounded, metal object
- handle all cards by their edges unless otherwise required
- when possible, use grounded electrostatic discharge wrist straps when handling sensitive component
Before making adjustments to the device, verify the flow meter is not actively monitoring or reporting to any master
control system. Adjustments to the electronics will cause direct changes to flow control settings.
All flow meter connections, isolation valves and fittings for hot tapping must have the same or higher-pressure rating as
the main pipeline.
Changing the length of cables or interchanging sensors or sensor wiring will affect the accuracy of the flow meter.
You cannot add or subtract wire length without returning the meter to the factory for re-calibration.
When using toxic or corrosive gases, purge the line with inert gas for a minimum of four hours at full gas flow before
installing the meter.

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Warranty Statement
All Sierra products are warranted to be free from defects in material and workmanship and will be repaired or
replaced at no charge to Buyer, provided return or rejection of product is made within a reasonable period but no
longer than one (1) year for calibration and non-calibration defects, from date of delivery. To assure warranty service,
customers must register their products online on Sierra’s website. Online registration of all of your Sierra products is
required for our warranty process. Read complete warranty policy at www.sierrainstruments.com/warranty.
Register Warranty Online
Register now at www.sierrainstruments.com/register. Learn more about Sierra’s warranty policy at
www.sierrainstruments.com/warranty

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1Introduction
This document describes the set-up, function and operation of the BACnet digital communications protocol for Sierra
Instruments’ InnovaSonic 207i ultrasonic liquid flow meter. This manual assumes the reader already has a working
knowledge of BACnet protocol requirements and terminology. For specific information about the InnovaSonic 207i
ultrasonic flow meter, consult the InnovaSonic 207i Instruction Manual. For all InnovaSonic 207i documentation, go
to: sierrainstruments.com/downloads/207i.
1.1 BACnet MS/TP Description
BACnet is a communications protocol for Building Automation and Control (BAC) networks that is governed by the
American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), SSPC 135, ANSI, and ISO
16484-5 standard protocol.
The BACnet Master/Slave/Token-Passing (MS/TP) driver implements a data link protocol that uses the services of the
RS-485 physical layer. The MS/TP bus is based on BACnet standard protocol SSPC‐135, Clause 9. BACnet MS/TP
protocol is a peer-to-peer, multiple master protocol based on token passing. Only master devices can receive the
token, and only the device holding the token is allowed to originate a message on the bus. The token is passed from
master device to master device using a small message in consecutive order starting with the lowest address. Slave
devices on the bus only communicate when responding to a data request from a master device.

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2BACnet Module Installation
2.1 Overview RS-485 Network
BACnet MS/TP uses a RS-485 (EIA-485) physical layer, so all of the same RS-485 wiring practices apply. Devices
should be wired using a daisy chain topology and the last device should have one 120Ω termination resistor to prevent
reflections. RS-485 repeaters may be used to exceed 30 devices or to clean up the signal. In some cases, a pull up and
pull down resistor may be used to “stiffen” the bus bias, although most devices have some built in (See Figure 1).
Although the BACnet MS/TP uses the RS-485 physical layer, the different data link layer allows any device to be a
master or a slave.
Figure 1. Overview of BACnet RS-485 Network
Connect wires to RS-485
network at “A,” “B,” “C”
isolated RS-485 ground

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2.2 Baud Rate and MAC Address Configuration
The baud rate and MAC (MS/TP) addresses can be set by either using the 207i Smart Interface Portal (SIP) Software,
which is recommended, or the local display and keypads on the meter. Download the 207i SIP software at
sierrainstruments.com/downloads/207i. See Chapter 3 for SIP and local display complete configuration instructions.
WARNING | Due to the way BACnet token passing works, duplicate addresses may lock
up the entire network and require a re-boot to restore full network functions.
2.3 Attaching BACnet Module Board to Network
BACnet is normally installed in slot 12 of the terminal board (See Figure 2 below). To set up the physical layer,
connect your network wires to the RS-485 connections which are A-, B+, C isolated RS-485 ground. Follow all RS-
485 wiring practices (See Figure 1 and Figure 2). The BACnet board has one dual LED that helps during
troubleshooting. The “RX” and “TX” markings are not relevant for BACnet. A red LED (solid or blinking) indicates
the BACnet board is not talking to the 207i main board. A green blinking LED light indicates the 207i is
communicating between the main board and BACnet board (See Chapter 6, for troubleshooting details).
Figure 2. Standard BACnet Module Located in Slot 12 of Terminal Board
CAUTION | When configuring BACnet, it is veryimportant that all of the devices on an
MS/TP bus communicate at the same baud rate: 9600, 19200 and 38400. Configure the
MAC (MS/TP) address between 1 to 127.
Connect wires to RS-485
network “A-”, “B+”, and “C”
LED blinking green indicates
BACnet is working. Red
indicates BACnet is not
configured yet.

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2.4 BACnet Field Installation
As stated, BACnet is usually installed in slot 12. However, the BACnet module can be installed in any free slot on the
board. Users may install their BACnet module in the field as standard with other option modules. The module has 4
plastic screws, one on each corner that are used to mount the module. The electrical power connections to the 207i are
made through the 4-pin connector (See Figure 3). Make sure to power down the 207i before installing any module.
Plug the BACnet Module into an open slot, (slot 12 normally) and secure it with the four plastic screws provided. You
will need to temporarily remove the LCD to access the back two screws.
Figure 3. BACnet Module Field Installation
As stated in Section 2.2, configuration of the RS-485 (MAC) address and baud rate, is done either with the 207i Smart
Interface Portal Software (SIP) or the local keyboard on the meter. See Chapter 3 for SIP and local display configuration
instructions.
Warning | Only install 207i option Modules with the 207i powered off and use proper ESD
precautions.
4-plastic screws
to secure
BACnet module
4-pin
Connector

Page 11
3InnovaSonic 207i Com Settings
3.1 Configure Baud Rate and MAC Address with Smart Interface Portal (SIP)
To configure the baud rate and MAC MS/TP with the 207i Smart Interface Portal Software (SIP) follow the steps below:
NOTE | BACnet is available on SIP Version 1.3.4 or higher. The latest SIP software version
can be downloaded on Sierra’s website at sierrainstruments.com/207isoftware.
1. Download the SIP software on the Sierra website at sierrainstruments.com/207isoftware.
2. Connect the 207i to your computer via the USB cable provided in your shipment. For more details on SIP installation,
refer to the 207i SIP Instruction Manual, Chapter 1.
CAUTION | If installing the BACnet in the field after initial installation of the product, the
207i software may need to be updated. Go to sierrainstruments.com/207isoftware.
3. Once your SIP is initialized, open your Smart Interface Portal (SIP) application and click the “Master Setup” button.
Figure 4. InnovaSonic 207i Smart Interface Portal Main Menu
Master Setup

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4. Click on “BACnet MS/TP Setup” button.
Figure 5. 207i SIP BACnet MS/TP Setup
5. In the “BACnet MS/TP Setup” screen, complete the configuration of your 207i for BACnet by doing the following:
WARNING | Due to the way BACnet token passing works, duplicate addresses may lock
up the entire network and require a re-boot to restore full network functions.
1) Select “On” in the “Off/On/Text” field.
2) Type in the BACnet MAC address in the “Address” field. Acceptable number range 1 to 127.
3) Choose your “Baud Rate”: 9600, 19200, or 38400.
4) Once done, click the “Update Meter” button.
CAUTION | When configuring BACnet, it is veryimportant that all of the devices on an
MS/TP bus communicate at the same baud rate: 9600, 19200 and 38400. Configure the
MAC (MS/TP) address between 1 to 127.
BACnet
MS/TP Setup

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Figure 6. BACnet MS/TP Set Up For MAC Address and Baud Rate
3.2 Configure Baud Rate and MAC Address Using Local Display and Keypad
To configure the Baud Rate and MAC address using the local display and keypad on the meter, follow the steps below:
1. Press the key. Pressing the key will bring you the top of the “MAIN MENU.”
2. From the “MAIN MENU,” scroll down to the “Input/Output” menu and press the key.
NOTE: Only three menu options show on the screen at a time.
Input BACnet MAC
address (range 1-127)
and Baud Rate
Select “Update
Meter” to complete
configuration of
BACnet

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3. Once in the “Input/Output” menu, scroll down and select “Slot 12 BACnet” and press the key. You will now
be in the BACnet setup menu. Note: There will be a series of screens in this section to complete the configuration of
BACnet to your 207i.
4. The next menu screen in the BACnet setup area is the “Off/On/Test” menu. Scroll down and select “On” to turn on the
BACnet Module. Press to go to “Address” screen.
5. Once in the BACnet MAC “Address” menu type in your MAC address. Acceptable address range from 1 to 127. Press
to go the next menu screen “Baud” in the BACnet setup menu.
WARNING | Due to the way BACnet token passing works, duplicate addresses may lock
up the entire network and require a re-boot to restore full network functions.

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6. Once in the “Baud” menu screen, scroll down and select your baud rate of either 9600, 19200, or 38400 and press the
key. Press to go the next menu screen “Parity” in the BACnet setup menu.
7. Leave “Parity” on “None,” and press the key twice to return to the “MAIN MENU.”
NOTE | The “Parity” is always “None” regardless of the menu’s selection.
CAUTION | When configuring BACnet, it is veryimportant that all of the devices on an
MS/TP bus communicate at the same baud rate: 9600, 19200 and 38400. Configure the
MAC (MS/TP) address between 1 to 127.

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4Supported BACnet Services/Objects - Protocol
Implementation Conformance Statement (PICS)
A BACnet object represents physical or virtual equipment information, as a digital input or parameter. The InnovaSonic 207i
ultrasonic flow meter uses the following object types:
•Device Object (1)
•Analog Input (23)
•Analog Value (1)
Each object type defines a data structure composed by properties that allow access to the object information. The tables on the
following pages show the implemented properties for each InnovaSonic 207i flow meter.
4.1 Acronyms and Definitions
Acronyms and Definitions
Item
Description
APDU
Application Protocol Data Unit
BACnet
Building Automation and Control Network---Data communication protocol
MS/TP
Master---Slave Token passing (a twisted pair RS-485 network created by BACnet)
BIBB
BACnet Interoperability Building Block (Specific individual function blocks for data exchange between
interoperable devices).
BV
Binary Value
BI
Binary Input
AI
Analog Input
RP
Read Property
WP
Write Property
RPM
Read Property Multiple
WPM
Write Property Multiple
DDP
Dynamic Device Binding
DOP
Dynamic Object Binding

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DCC
Device Communication Control
PICS
Protocol Implementation Conformance Statement
4.2 Supported BACnet Services/Objects
Supported BACnet Services/Objects
BACnet Interoperability Building Block
Services
Support
DS-RP-B
Read Property
Execute
DS-WP-B
Write Property
Execute
DM-DDB-B
Read Property Multiple
Execute
DM-DOB-B
Write Property Multiple
Execute
DM-DCC-B
Who-Is
Execute
DS-RPM-B
I--‐Am
Initiate
DS-WPM-B
Who-Has
Execute
DS-RP-B
I-Have
Initiate
DS-WP-B
Device Communication Control
Execute
4.3 BACnet Supported Device, Object and Property Table
BACnet Object Name
Obj, Instance
BACnet Object Property
Default/Sample Values
Sierra 207i
Dev, 1
Object Identifier
MAC
Object Name
207i Flowmeter
Object Type
Flowmeter
System Status
Operational
Vendor Name
Sierra Instruments
Vendor Identifier
ASHRA# 722
Model Name
207i
Firmware Revision
v1.x.xx
Application Software Version
v1.x.xx
Location
*TAG as set in 207i menu

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BACnet Object Name
Obj, Instance
BACnet Object Property
Default/Sample Values
Description
*TAG as set in 207i menu
Protocol Version
1
Protocol Revision
12
Protocol Services Supported
Protocol Object Types Supported
Object List
Max APDU Length Accepted
480
Segmentation Supported
No
APDU Timeout
6000
Number Of APDU Retries
3
Max Master
127
Max Info Frames
1
Device Address Binding
Database Revision
0
Flow
AI, 1
Object Identifier
AI-1
Object Name
Flow
Object Type
Analog Input
Present Value
0
Description
Current Flow Rate
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
* as selected in 207i menu
Velocity
AI, 2
Object Identifier
AI-2
Object Name
Velocity

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BACnet Object Name
Obj, Instance
BACnet Object Property
Default/Sample Values
Object Type
Analog Input
Present Value
0
Description
Current Velocity of Fluid
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
meters_per_second
POS Totalizer
AI, 3
Object Identifier
AI-3
Object Name
POS Totalizer
Object Type
Analog Input
Present Value
0
Description
POS Flow Total
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
* as selected in 207i menu
NEG Totalizer
AI,4
Object Identifier
AI-4
Object Name
NEG Totalizer
Object Type
Analog Input
Present Value
0
Description
NEG Flow total
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
* as selected in 207i menu

Page 20
BACnet Object Name
Obj, Instance
BACnet Object Property
Default/Sample Values
NET Totalizer
AI, 5
Object Identifier
AI-5
Object Name
NET Totalizer
Object Type
Analog Input
Present Value
0
Description
Net Flow Total of Fluid
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
* as selected in 207i menu
Energy Flow Rate
AI,6
Object Identifier
AI-6
Object Name
Energy Flow Rate
Object Type
Analog Input
Present Value
0
Description
Energy Flow Rate of Fluid
Status Flags
F,F,F,F { }
Event State
NORMAL
Out Of Service
0
Units
* as selected in 207i menu
Energy POS Total
AI,7
Object Identifier
AI-7
Object Name
+ Energy Tot
Object Type
Analog Input
Present Value
0
Description
Energy Positive Total
Status Flags
F,F,F,F { }
Event State
NORMAL