i-Vu Open Systems
IP & MS/TP Networks
&
Open Controllers on 3rd Party
Systems

What will we cover?
We will cover i-Vu Open System:
MS/TP Networks
TCP/IP Networks
Addressing i-Vu Open Controllers & 3 rd Party systems – special considerations
2

MS/TP Network
3

MS/TP Network
MS/TP Network
MS  Master-Slave
TP  Token-Passing
MS/TP devices are either Masters or Slaves
Masters – can initiate communication and will respond to broadcasts
Slaves – only respond to direct requests for information i-Vu Open controllers are Master devices
4

MS/TP Network
On any given MS/TP bus, each MS/TP device must have a unique MS/TP address (commonly called MAC address)
Master devices can have a MAC address between 0 and 127.
Slave devices can have a MAC address between 0 and 254.
i-Vu Open device MAC address is set using rotary switches. Max address is 99.
5

MS/TP Network
In order for a device to initiate communication it must have the token.
Lowest addressed device creates token following power up or collision.
Master device passes token to next master device when done.
Max Info Frame setting determines how many requests can be made before having to pass token.
6

MS/TP Network
To determine next master recipient, master does a Poll for Master.
i-Vu Open controllers will do a Poll for Master every 50 times they get the token if there is a gap in addressing.
Polls one address each time it gets token
7

MS/TP Network
A simple i-Vu Open VVT System
RTU
Rotary
Address
02
VVT Zone
Rotary
Address
09
Bypass
Rotary
Address
14
VVT Zone
Rotary
Address
15
8

MS/TP Network
A review of a BACScope capture shows the token being passed between the 4 controllers on the network
(addresses are in HEX format).
9

MS/TP Network
Since there are gaps in the addressing, the BACScope capture will also show periodic Poll for Master messages.
10

MS/TP Network
Questions?
11

TCP/IP Network
12

TCP/IP Network
Open Routers and Open Links are BACnet/IP to
MS/TP Routers
Internal router of an i-Vu Open server is also a router when the USB Open Adapter is used.
Adding Open Routers or Open Links allows you to:
Access i-Vu Open devices from the IP side
Expand systems beyond the 60 device limit of an MS/TP bus running at 76.8k.
13

TCP/IP Network
Open routers have an IP address and a MAC address.
The MS/TP MAC address of an i-Vu Open router will always be 0 and cannot be changed.
On a system with multiple i-Vu routers that does not have a front end, one router should have rotary switches set to 01 to make him the
‘master’ router. The master will synch time and collect color status from other routers.
14

TCP/IP Network i-Vu Open server
Standard or Plus
USB Router
MS/TP Network
BACnet/IP Network i-Vu Router
MS/TP Networks
MAC Address 3
MAC Address 3
IP
Router i-Vu Link
MAC Address 3
MAC Address 7 MAC Address 7 MAC Address 7
15

TCP/IP Network
BBMDs
BBMDs: BACnet Broadcast Management
Devices
Used to manage BACnet Broadcasts across routers
BACnet uses broadcasts for everything from discovering nodes to sending trend and alarm data to the server
16

TCP/IP Network
BBMDs
Only one router per subnet needs to be configured as a BBMD
Use the BBMD Tool to configure your routers.
For an i-Vu server, the internal router must have a valid IP address in order to configure it as a
BBMD
BBMDs must be configured in order for i-Vu or FA to be able to fully discover an entire system spread across multiple subnets
17

TCP/IP Network
BBMDs i-Vu Open server
IP: 141.61.92.87
Subnet: 255.255.255.0
IP
Router
USB Router
IP: 141.61.92.88
Subnet: 255.255.255.0
IP
Router i-Vu Router
IP: 16.128.12.22
Subnet: 255.255.255.0
USB Router
MS/TP Network
MS/TP Networks
IP
Router i-Vu Link
IP: 41.4.22.54
Subnet: 255.255.255.0
18

TCP/IP Network
BBMDs
The network on the previous slide would require each router to be a BBMD
The BBMD table loaded would contain the IP address of each of the three routers so would look as follows:
19

TCP/IP Network
Questions?
20

Controller Addressing in i-Vu Open
21

Addressing
An i-Vu Open controller has two addresses:
It’s MS/TP Network Address
It’s BACnet System Address
MS/TP Network Address
The BACnet MS/TP network address is set using the rotary switches on the device
This address must be unique only on the local MS/TP network where the controller is installed
This is referred to as the MAC address of the controller
22

Addressing
IP
Router i-Vu Link i-Vu Open server
MS/TP Network i-Vu Router
MS/TP Networks
MAC Address 3
MAC Address 7
MAC Address 3
MAC Address 7
MAC Address 3
MAC Address 7
23

Addressing
BACnet System Address
Referred to as the DeviceID or Device Instance of the controller
This can be generated automatically (default) or set manually
Automatically, it is set as a combination of the Network
Number that the device resides on and the device
MAC address (Auto Generation)
Manually, it is set via software (using BACView, Field
Assistant or i-Vu), to any valid BACnet Device ID
24

Address
Addressing
Default Controller Configuration
Dip
Switches
Default Settings
Rotary Address = 0
Dip Switches set
Baud Rate = 76.8K
Internal Configuration
Network number =16101
Device Instance is not set
25

Addressing
Default Router Configuration
Dip
Switches
Address
Default Settings
Rotary Address = 0
Dip Switches set
Baud Rate = 76.8K
IP Address = 192.168.168.1
Internal Configuration
BACnet/IP Network Number
1600
MS/TP Network number is not set
Device Instance is not set
26

Addressing
Auto-generating Scheme
Standalone controllers or systems that do not have i-Vu Open routers will always have a default
MS/TP network number of 16101
When controllers are connected to a iVu Open router then it’s setting will determine the automatic
BACnet addressing scheme for the connected Controllers (see below). i-Vu Open Router or Link
IP Network Number = 1600
Device Instance Number = 1600xx
MS/TP Network Number = 161xx
MS/TP MAC Address = 0 (fixed)
NOTE: USB Adapter Network # is randomly generated by default i-Vu Open Controllers:
Device Instance Number = 161xxyy
MS/TP MAC Address = yy
MS/TP Network Number = 161xx (actually learned from the router; defaults to
16101 if no i-Vu Open router is present)
Legend
16 = Carrier's BACnet Vendor ID xx = Router's rotary address (Router Address) yy = Open controller's rotary address (MS/TP MAC Address)
27

Addressing
Router Setup – IP Addressing
Routers or Links can be set to an Assigned IP address or allowed to obtain an
IP address using DHCP.
To Assign an IP address:
Use BACView
Use PC and HyperTerminal: Turn Dip Switch 1 and 2 ON. Cycle power. Connect to the Router or Link with a PC running HyperTerminal using a USB-L cable or connect through the S2 port. Note: Turn Switch 1 OFF and cycle power when done.
28

Addressing Examples
Auto-generating with External Routers
BACnet/IP Network number 1600
Rotary Address 01
Router Device Instance
160001
MS/TP Network 16101
Number
Rotary Address 03
Device Instance
1610103
Rotary Address 07
Device Instance
1610107
16 = Carrier’s BACnet Vendor ID
29

Addressing Examples
Autogenerating with i-Vu Open Server i-Vu Open
Standard or Plus
MS/TP Network
Number is
Autogenerated.
16593
Server Device Instance
169999
Rotary Address 03
Device Instance
1659303
Rotary Address 07
Device Instance
1659307
16 = Carrier’s BACnet Vendor ID
30

Addressing Examples
Autogenerating with External Routers
BACnet/IP Network number 1600
IP
Router
Server Device
Instance Number i-Vu Open
169999
Standard or Plus
MS/TP Network
16593
Number
Rotary Address 03
Device Instance
1659303
Rotary Address 07
Device Instance
1659307
Rotary Address 01
Router Device Instance
160001
16101
Rotary Address 03
Device Instance
1610103
Rotary Address 07
Device Instance
1610107
31
16 = Carrier’s BACnet Vendor ID

Addressing
Manual Addressing - Routers
At the site level/Discovery, the Advanced tab allows for manual addressing of the routers
When using manual addressing make sure that each network number and device instance is unique or the
NETWORK WILL HAVE PROBLEMS!!
32

Addressing
Manual Addressing - Controllers
At the Router level/Discovery, the Advanced tab allows for manual addressing of the Controllers
When using manual addressing make sure that each device instance is unique or the NETWORK WILL HAVE
PROBLEMS!!
33

Addressing
Manual Addressing
Manually defining network numbers
The maximum device instance number is 4,194,302.
Network numbers greater than 40,000 would potentially cause errors in the system because it will cause device instance numbers to be greater than
4,194,302.
i-Vu will automatically subtract 40,000 and assign a device instance minus
40,000 to the controller.
Example
Network number = 50000 50000 – 40000 = 10000
Controller MAC address = 22 22 appends to 10000
Device Instance = 1000022
34

Addressing
Auto Vs. Manual Addressing
Auto Addressing
Automatically configures
Routers to have unique
Network numbers
Automatically configures the controllers to have unique device instance numbers
Manual Addressing
Manual process to give unique network numbers
Manual process to give unique device instance numbers
Recommended only if it is specified for a certain network numbering scheme!
35

Addressing
Multiple i-Vu systems on same LAN
You must have unique Device IDs and MS/TP Network numbers
By default, every i-Vu Open server has a Device ID of 169999
Two or more i-Vu Open servers on the same LAN would result in duplicate server Device IDs
Every i-Vu Open system, by default, uses the same addressing scheme which means that great care needs to be taken
MS/TP network numbers must be manually set or care needs to be taken to ensure that the rotary switches on all routers are unique.
If the network number is manually set then the router Device ID will most likely also need to be manually set.
36

Addressing
Multiple i-Vu systems on same LAN
If two or more i-Vu servers reside on the same
LAN and they can be found by BACnet a common problem is that alarm and trend data may periodically be lost.
Problem most likely to be seen with Internal router since a device binds with the last device that responds to its request.
37

Addressing
Questions?
38

rd
39

3 rd Party BMS Considerations
Default Network Number
All Open controllers, by default, have an internal network number of 16101. Thus, the
BMS system CANNOT have their own network
(of any kind) with a network number of 16101.
Only way to change default network number in an i-Vu Open controller is to connect controller to an i-Vu router configured with the desired
MS/TP network number.
40

3 rd Party BMS Considerations
Auto Generated Device IDs
Third party routers will NOT send the MS/TP network number to Open controllers. ALC and other OEM customers routers will send it.
Open controllers use the network number to generate a unique Device ID as part of the i-Vu
Open system.
If you have Open controllers on more than one 3 rd party MS/TP network serious consideration should be given to using user defined Device IDs set using BACView or Field Assistant.
41

Thank You!
42