Transcript 6001-54.2_SLIDES_PRE_BACnetBasics_Lab11x

BACNET MS/TP
Topics:
1 – Network Requirements
2 – Device Addressing
3 – Power Supply Requirements
4 – System Architecture
5 – BACnet Objects & Services
6 – Labwork
1
BACnet MS/TP
EST: 45:00
1 – Network Requirements
5 – BACnet Objects & Services
2 – Device Addressing
6 – Labwork
3 – Power Supply Requirements
7 – Project Conversion
4 – System Architecture
8 – Troubleshooting Issues
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2
Topology
Wiring
Device Load
Baud Rate
CHAPTER 2
BACNET MS/TP
NETWORK REQUIREMENTS
TOPIC 1
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BACnet Integration in EC-Net-AX
 BACnet network design review
– Topology and wiring
– Addressing
– Power supply
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Commission an EC-BOS review
BCP BACnet Network driver
BACnet MS/TP Communication Port
Device MS/TP MAC addressing
Discovering devices
Device Instance number (ID) strategy
PC connection with BACnet IP to MS/TP adaptor
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MS/TP Network Topology
BACnet MS/TP Network Topology
4,000 ft / 50 devices
(Recommended)
Data
Transmission
Protocol
MS/TP (RS-485)
Architecture Type
Daisy Chain
Number of device
per segment
255 max (128 masters +
128 slaves)
50 recommended
Network Length
1220 meters (4000 ft) max
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MS/TP Network Wiring
Cable Type
BACnet MS/TP Network Wiring
Wiring
Shielded twisted pair (STP) (DC approved #07CBL-BACnet)
Data Bus is Polarity Sensitive
Shield wire is continue on the entire length
Connect shield wire to building ground on one end only
End-Of-Line
120 Ohms resistor on each end of the segment
- Jumper on ECB Controllers
- External resistor on EC-BOS and ECB-Stat
Bias
510 Ohms per wire
Minimum of one, maximum of two sets per segment
Provided by built-in EOL (internal jumper EOL)
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MS/TP Network Load
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All Distech Controls’ devices are categorized as Masters and rated as ⅛ load
Other may have different network load ratings (for example, ¼, ½, or full load)
If a segment contains dissimilar device load ratings, the device with the
highest load rating is the one that sets the limit for the maximum number of
devices for that data bus segment
For example, you plan to put the following devices on one data bus segment:
The solution for the above
example is to create two
data bus segments
connected together by a
repeater and then split up
the devices between the
data bus segments.
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MS/TP Network Baud Rate
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By default, the Distech BACnet controllers have their BAUD rate set to AUTO
The recommended baud rate for Distech Controls’ devices is 38.4 kbps
All devices on the data bus must be set to the same baud rate
Therefore, the chosen baud rate must be supported by all devices connected to
the data bus
Most devices will have a settings AUTO.
This is the preferred setting for a
controller. However, at least one
controller on the BACnet MS/TP network
data bus must have its BAUD rate set.
The preference is to set the building
controller’s BAUD rate (if present). e.g.
on an EC-BOS.
Baud Rate
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Support: from 9.6 to 76.8 kbps
Recommended: 38.4 kbps
Default setting on ECB controllers: AUTO
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MS/TP Network Baud Rate
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When the Baud rate is set to AUTO, the controller cannot initiate any
communication until it has detected the baud rate of the BACnet MS/TP network
If all controllers on the BACnet MS/TP network are set to AUTO, then all
controllers will not communicate
Setting the BAUD rate on at least one controller is required, which will set the
BAUD rate for all other controllers on the data bus
Setting the BAUD rate on ECB controllers is performed with the EC-Smart-Vue
General Configuration Menu (See Hardware Installation Guide)
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BACNET MS/TP
DEVICE ADDRESSING
TOPIC 2
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Device Addressing / Best Practices
Device Addressing Overview
Device MAC Addressing
Bus Master Device Settings
Device Instance (ID) Number
Device Numbering System
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Device Addressing Overview

Each device connected to the BACnet MS/TP data bus is identified by a:
– MAC address
– Device Instance number
– Network number
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The MS/TP Device MAC Address uniquely identifies a device on an
MS/TP Network segment (identified by a Network Number). Devices on
another MS/TP Network segment (identified by a different Network Number)
can have the same MAC Address. The MAC Address is any number
between 0 and 127 for Master devices, and 128 to 254 for Slave devices.

Address 255 is a wild card for broadcasts.
Addressing
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Both the MAC Address and the Device Instance must be set for
each device and are essential for proper BACnet LAN operation
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Device Addressing Overview

The BACnet Device Instance (or Device ID) uniquely identifies a device
across the complete BACnet internetwork. The Device Instance may be any
number between 0 and 4194302. It is with the Device Instance that
messages are exchanged between BACnet devices.
Unlike a MAC Address, a Device Instance cannot be reused elsewhere in
the BACnet internetwork (it must be unique).

The BACnet Network Number is any number between 1 and 65534. A
network number identifies a LAN for routing purposes. Each BACnet MS/TP
Network will have a Network Number, and each BACnet IP Network will
also have a Network Number.
Addressing
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Both the MAC Address and the Device Instance must be set for
each device and are essential for proper BACnet LAN operation
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MS/TP Device MAC Address
Reserve some MAC Addresses for common commissioning and maintenance tasks.
– Reserve MAC 0 for the Building Controller MS/TP port
– Reserve MAC 1 for a portable router, so it can be temporarily connected without
conflicting with other devices already connected to the data bus.
 Avoid gaps in the MAC address sequence.
 The physical order is unimportant.
 MAC Addresses should be used as shown in the following table.
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Setting MS/TP Device MAC Address
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ECB devices:
– The MAC address can be changed using EC-SmartVue (all DIP switches need to be at 0 position)
– The MAC address can also be changed using DIP
switches on ECB-203 and higher series
(device power cycle is required after)
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ECB-STAT: On the LCD interface menu
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EC-BOS: Using EC-NetAX Pro, MstpPort / Link Properties
Tool Kit
Ex. MAC: 2+16+64 = 82
All technicians should have an EC-Smart-Vue in their tool kit
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MS/TP Bus Master – Device Settings
In a typical BACnet Network, the Network interface card used to access the MS/TP
bus is called the Bus Master. In recommended architectures, the EC-BOS MS/TP
Port is the Bus Master Device.
There are 4 configurations that are required on the Bus Master Device:
– Baud Rate
– MS/TP Address (MAC Address)
– Max Master
– Max Info Frames
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MS/TP Bus Master – Baud Rate & MAC
The Baud Rate

Usually set in the Bus Master (EC-BOS) and will be the only reference if all
devices on the network are set to AUTO. All devices on the network need to
have the same Baud rate manually set or AUTO
– 38.4 kbps is the recommended Baud rate setting in the EC-BOS
– AUTO is the default and recommended setting for all ECB controllers
The MS/TP Address

Or MAC Address for the Bus Master (EC-BOS) is set to 0 (it’s the default value)
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MS/TP Bus Master – Max Master
MS/TP Network: Bus Master Device (Building Controller)

To prevent the passing of the token to unused MAC Addresses situated after
the final Master device, the Max Master must be set in each Master Device.
About the Max Master Property
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By default, the Max Master for the MS/TP Bus is set to 127 in the EC-BOS
In practice, the actual number of devices connected to a data bus is far less.
This gap unnecessarily slows-down the data bus.
Set the Max Master in the EC-BOS to the highest Master device’s MAC Address
to optimize the efficiency of the data bus (reserve 3 to 5 more for spares)
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MS/TP Bus Master – Max Info Frames
MS/TP Network: Bus Master Device (Building Controller)
Max Info Frames is set to 20 (default) in the EC-BOS – may be increased as needed
Once a device has the token, it can make a number of information requests to other
devices on the BACnet internetwork. The maximum number of requests is limited by
the Max Info Frames property.
Ordinary BACnet MS/TP devices should
have the Max Info Frames properties set
to between 1 and 5. The Bus Master
(EC-BOS) should have the Max Info
Frames property set to about 20.
Device Type
Info Frames
Reason
ECB-STAT
1
Thermostats
ECB-VAV series
5
Terminal units controllers don’t have many requests
ECB-203 (and above)
5
System unit controllers have more requests
EC-BOS
20
Building Controllers have most requests
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BACnet Device Instance Number (ID)
Default Numbering System for Distech Controls’ controllers
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By default, controllers from Distech Controls automatically self-assign a Device
Instance number generated from the MAC Address assigned to the controller
during installation.
The Device Instance number is calculated as follows, where 364 is Distech
Controls BACnet manufacturer ID:
– Default Device Instance number = 364 X 1000 + MAC Address
This Numbering system is sufficient for a BACnet network that has only one MS/TP
Network on only one Building Controller (EC-BOS).
Examples:
MAC Address
Default Numbering System
Default Device Instance Number
3
364000 + 3
364003
20
364000 + 20
364020
123
364000 + 123
364123
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BACnet Device Instance Number
For Larger BACnet Networks
For larger BACnet networks that have more than one building controller,
set the MAC addresses, Device Instance numbers and Network numbers
manually according to a good well thought-out network planning scheme.
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Device Instance Numbering System
Numbering System for MAC Addresses, Device Instance and Network Numbers
Distech recommends the following scheme, as it reuses the MAC Address and Network
Number in the Device Instance number to make it easier to implement:
Discover
Make sure to add only the devices connected to the MS/TP port of the specific ECBOS being configured. Using this numbering system will greatly help to identify those
devices that should be added to a given EC-BOS.
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Device Instance Numbering System
Example
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BACNET MS/TP
POWER SUPPLY REQUIREMENTS
TOPIC 3
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Power Supply Requirements
 Power Supply Wiring
 Power Supply Ground Lift
 Typical Wiring Diagram
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Power Supply Wiring
24V Power Supply wiring
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The 24V COM terminal of all devices must be connected to the Electrical System Ground.
Without this signal reference, transceivers may interpret the voltage levels of the
differential data signals incorrectly, and this may result in data transmission errors.
All Distech devices use the 24V COM terminal as the signal reference point for the data
bus. That wire must be connected to the Electrical System Ground at the power supply.
This ensures that the 24V COM terminals of all devices in the building are at the same
potential
Mechanical ground is unacceptable: Do not use a pipe, conduit or duct work for a ground
For inter-building connections, it is recommended to use a BACnet/IP or Fox network
connection.
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Power Supply Ground Lift
Avoid Ground Lift
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Ground lift is caused by wire resistance causing voltage drop on the power
wire run.
Because the 24V COM terminal is the signal reference point for the data
bus, a ground lift would offsets that reference and affect the transceiver’s
valid data levels.
If the ground lift (voltage drop) is more than 7 volts, there is a risk of data
corruption and offline events due to the device being incapable of correctly
reading data signals.
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Power Supply Ground Lift
Techniques to Reduce Ground Lift
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Power wiring runs should not be too long, nor have too many devices
connected to it.
Use the instructions in the Hardware installation guide for limitations info.
Always use a transformer with 100VA power or less.
Power 5 devices or less with one 100VA transformer.
Use a wire with a gage of 18 or less for the power run.
When the total load of a number of device requires more than 100 VA, use
two or more transformers.
Maintain consistent polarity when connecting controllers and peripherals to
the power run.
The 24V COM terminal of the transformer must be connected to the
building’s ground.
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BACNET MS/TP
SYSTEM ARCHITECTURE
TOPIC 4
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Typical Wiring Diagram
Device BACnet MS/TP LAN and Power Wiring Diagram
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Medium-to-Large Building Architecture
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Peer-to-Peer Architecture
True Peer-to-Peer
 Typical architecture for very small projects
 No building controller required
 Any device is able to Initiate data transfer
 Data sharing from one to many
 Local network connection required for
engineering
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BACnet IP to MS/TP Network Adaptor
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Used to connect a computer (typically a
laptop) to a BACnet MS/TP network
Internal Web server for configurations and
diagnostics
Optically isolated MS/TP port
Supplied by a USB port (USB port is strictly
used to power the unit)
3.5mm Stereo jack quick connect to MS/TP
bus
Applications
–
–
–
–
Commissioning
Configuring
Engineering
Troubleshooting
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Adaptor
Use the adaptor in Peer-to-Peer architectures
Also when no IP connection to the BAS is accessible
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BACNET MS/TP
BACNET OBJECTS & SERVICES
TOPIC 5
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BACnet Specific Objects
BACnet Objects
Inputs
Outputs
Values
PID
Schedule
Calendar
Commandable objects usage
Non-commandable objects usage
BACnet Network properties
Alarm properties (B-AAC)
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BACnet Specific Services
Read Property Services
COV Subscription Services
Receive Broadcast COV
Write Property Services
Send Broadcast COV Services
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LAB 11: Getting Started With BACnet MS/TP
BACnet MS/TP
LABWORK
TOPIC 6
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Lab 11: Starting With BACnet MS/TP
LAB 11 – 75 min
Getting Started With BACnet MS/TP Controllers

Ideal for large control requirements,
ranging from 28-points to 76-points
(HW inputs/outputs) (support up two
ECx-400 extension modules)

Fast-response 32-bit microprocessor
for complex data processing, including
floating point support and math
function execution, such as
trigonometric and psychometric
calculations

Supports up to 500 network values
40:00
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Lab 11: Starting With BACnet MS/TP
A.
Add BACnet Network
B.
Configure the Local Device (EC-BOS)
C.
Add & Configure MS/TP Port
D.
Set MAC Addresses for BACnet Devices
E.
Discover & Add Devices
F.
Configure Device IDs for all Devices
G.
Configure Max Master
H.
Launch EC-gfxProgram / Load a Project
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Lab 11: Starting With BACnet MS/TP
LAB 11A – 3 min
Create a BcpBacnetNetwork on the EC-BOS station
LAB 11B – 2 min
Configure the Local Device (EC-BOS)
LAB 11C – 10 min
Add & Configure the MSTP Port
LAB 11D – 10 min
Set MAC Address for all BACnet devices
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Lab 12: Starting With BACnet MS/TP
LAB 11E – 3 min
Discover & Add BACnet devices
LAB 11F – 5 min
Configure Device IDs for all BACnet devices
LAB 11G – 2 min
Configure the Max Master property and communicate to
all devices on the BACnet network
LAB 11H – 5 min
Launch EC-gfxProgram and Load a project
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Lab 12: Starting With BACnet MS/TP
LAB 12A – 3 min
Add a BcpBacnetNetwork on the EC-BOS Station
From the Distech Controls palette, add the BcpBacnetNetwork driver to your
station. Or use the New button in the Driver Manager.
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Lab 11: A – Add a BACnet Network
Add the BcpBacnetNetwork driver to the Drivers container of your EC-BOS station.
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Lab 11: A – Add a BACnet Network
Add the BcpBacnetNetwork driver to the Drivers container
of your EC-BOS station.
2
1
3
4
Driver Manager
New button
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2
Lab 11: Starting With BACnet MS/TP
LAB 11B – 2 min
Configure the Local Device (EC-BOS)
On the Local Device’s property sheet, set the Object ID property to a value
other than the default of -1.
For the Lab exercise, we will use the last 2 digits of the EC-BOS IP address
plus “000” to designate the EC-BOS as the master controller.
EXAMPLE: 13000
 13 = last 2 digits of BOS IP (10.1.1.113)
 000 = MAC address of EC-BOS
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Lab 11: B – Configure Local Device
Set the Object ID property to a value other than the default of -1.
Use the last 2 digits of the EC-BOS IP address plus “000” to designate the EC-BOS as the master controller.
EXAMPLE: 13000
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
13 = last 2 digits of BOS IP (10.1.1.113)
000 = MAC address of EC-BOS
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Lab 11: B – Configure Local Device
Set the Object ID property to a value other than the default of -1.
Use the last 2 digits of the EC-BOS IP address plus “000” to designate the EC-BOS
as the master controller.
Local Device
EXAMPLE: 13000
 13 = last 2 digits of BOS IP (10.1.1.113)
 000 = MAC address of EC-BOS
Object ID
Property sheet
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Lab 11: Starting With BACnet MS/TP
LAB 11C – 10 min
Add & Configure the MSTP Port
From the distechControls palette, add an MSTP port to the BcpBacnetNetwork
under BACnet Comm > Network.
Configure the following properties on the MSTP Port’s property sheet:
• Port Name
• Baud Rate
• MS/TP Address (MAC)
• Max Master
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Lab 11: C – Add/Configure MS/TP Port
From the distechControls palette, add an MSTP port to the BcpBacnetNetwork
under BACnet Comm > Network.
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Lab 11: C – Add/Configure MS/TP Port
From the distechControls palette, add an MSTP port to the BcpBacnetNetwork
under BACnet Comm > Network.
distechControls
MSTP Port
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Lab 11: C – Add/Configure MS/TP Port
Configure the following properties
on the MSTP Port’s property sheet:
•
Network Number
•
Port Name
•
Baud Rate
•
MS/TP Address (MAC)
•
Enabled
Bacnet Comm > Network > MSTP Port
Property sheet
Set to TRUE
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Lab 11: C – Add/Configure MS/TP Port
Configure the following properties on the MSTP Port’s property sheet:
• Network Number
• Port Name
• Baud Rate
• MS/TP Address (MAC)
• Enabled
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Lab 11: Starting With BACnet MS/TP
LAB 11D – 10 min
Set MAC Address / Baud Rate for all BACnet devices
Using one of the following methods, set the MAC address and BAUD rate for
the BACnet controllers:
• DIP switches
• EC-Smart-Vue
• LCD screen (x50 series)
• Menu button (STAT only)
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Lab 11: D – Set Device MAC Addresses
Using one of the following methods, set the MAC address and BAUD rate for the BACnet
controllers:
•
•
•
•
DIP switches
EC-Smart-Vue
LCD screen (x50 series)
Menu button (STAT only)
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Lab 11: D – Set Device MAC Addresses
The following options are available for setting the MAC address for a
programmable BACnet device:
Click for more info:
DIP Switches
EC-Smart-Vue
X50 LCD Screen
STAT Menu
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Lab 11: Starting With BACnet MS/TP
LAB 11E – 3 min
Discover & Add BACnet devices
Discover the devices (physical controllers) on your BcpBacnetNetwork.
Add them to the BcpBacnetNetwork in the Database pane.
Rename the device as appropriate with the site’s device naming convention.
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Lab 11: E – Discover/Add BACnet Devices
Discover the devices (physical controllers) on your BcpBacnetNetwork.
Add them to the BcpBacnetNetwork in the Database pane.
Rename the device as appropriate with the site’s device naming convention.
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Lab 11: E – Discover/Add BACnet Devices
Discover Pane
Database Pane
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Lab 11: Starting With BACnet MS/TP
LAB 11F – 5 min
Configure Device IDs for all BACnet devices
Select the devices for which you wish to change the Device ID in the Database
pane, and click the Change Device ID button.
Set the Device IDs for devices simultaneously for common changes or
individually for changes unique to a specific device.
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Lab 11: F – Configure Device IDs
Select the devices for which you wish to change the Device ID in the Database pane,
and click the Change Device ID button.
Set the Device IDs for devices simultaneously for common changes or individually for
changes unique to a specific device.
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Lab 11: F – Configure Device IDs
1
Change Device ID
Database Pane
2
3
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4
5
Lab 11: Starting With BACnet MS/TP
LAB 11G – 2 min
Configure the Max Master property and communicate to
all devices on the BACnet network
On the MSTP Port Link property sheet, use the MSTP Configuration tool to
set the Max Master for all BACnet devices on the network.
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Lab 11: G – Configure the Max Master
On the MSTP Port Link property sheet, use the MSTP Configuration tool to
set the Max Master for all BACnet devices on the network.
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Lab 11: G – Configure the Max Master
2
3
4
1
Max Master
MS/TP Configuration tool
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Lab 11: Starting With BACnet MS/TP
LAB 11H – 5 min
Launch EC-gfxProgram and Load a project
Right-click on the Bacnet device and select Launch Wizard.
EC-gfxProgram will load under EC-Net-AX. Validate connectivity with both the
EC-BOS and the BACnet controller.
Load a pre-loaded application project from the Code Library.
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72
Lab 11: H – Launch GFX and Load a Project
Right-click on the Bacnet device and select Launch Wizard.
EC-gfxProgram will load under EC-Net-AX. Validate connectivity with both the EC-BOS
and the BACnet controller.
Load a pre-loaded application project from the Code Library.
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Lab 11: H – Launch GFX and Load a Project
Launch Wizard
EC-gfxProgram
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Lab 11: H – Launch GFX and Load a Project
1
Code Library
gfxApplications
2
3
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BACnet MS/TP
PROJECT CONVERSION
TOPIC 7
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Project Conversion
To convert a project engineered in another protocol such as LonWorks, you
must convert it to the current protocol – in this case, BACnet. Before
conversion, the Error List will display many errors, such as below, because
BACnet does not know how to interpret the other protocol’s objects.
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Project Conversion
To convert a pre-engineered project to another protocol, use the Convert
Project button in the File menu. The resulting new list of errors should be
significantly reduced.
2
1
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Project Conversion
In the case of converting from a Lon project, BACnet does not recognize Network
Variables or SNVTs, and so each Network Variable must be replaced with a BACnet
Network Value block:
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Project Conversion
Each Network Value block must be
configured for the following properties:
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Network Value Mode
Configuration Type
Service
Device Path
Object
Property
Data Type
Default Value
Poll Interval
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Project Conversion
Property
Value
Network Value Mode
Input or Output
Configuration Type
Database or Manual
Service
For INPUTS:
•
Read Property
•
Read Property Multiple
•
COV Subscription
•
Receive Broadcast COV
For OUTPUTS:
•
Write Property
•
Write Property Multiple
•
Send Local Broadcast COV
•
Send Global Broadcast COV
Device Path
Select the device from a network tree
Object
For INPUTS:
Select the BACnet object from the device that is being received from (and
read by) the controller
For OUTPUTS:
Select the BACnet object from the device that is being sent to (and written to)
the other controller
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Project Conversion
The Project Conversion tool can save you
both time and money in allowing you to reuse
existing projects engineered in other
protocols or devices.
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CHAPTER 6
BACnet MS/TP
TROUBLESHOOTING ISSUES
TOPIC 8
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Troubleshooting Issues
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Troubleshooting Issues
- Fault Conditions
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Troubleshooting Issues
- Status LED Interpretations
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Troubleshooting Issues
- Before Calling Tech Support Verifications
Bus EOL termination
Duplicate MACs
Same Baud rate
Incorrect polarity
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Troubleshooting Issues
- Before Calling Tech Support Verifications
COV reporting
MAC address gaps
Non Daisy-chained
Power: not > 5 devices
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BACK TO
GETTING STARTED
WITH BACNET
MENU
(CLICK HERE)
The QUIZ is still under development.
So click again and we’ll take you to the next module.
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