CARRIER COMFORT NETWORK BUS ARCHITECTURE

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CARRIER COMFORTNETWORKBUS ARCHITECTURE
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Carrier Comfort Network

• Carrier Comfort Network (CCN) is a controls
  concept that consist of Carrier control products
  and Carrier equipment that are stand alone as
  well as designed to function together on a
  Digital Control System.

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CCN BUS ARCHITECTURE
Terms Description
CCN Carrier Comfort Network - Carrier protocol
communication system CCS Carrier Comfort Systems
- Family of communicating Stats (Temp for single
zone and VVT for multi zone) FID Field Installed
Device - General purpose field programable
controller. 1600/6400 Carrier Comfort Controllers
(new style FIDs) PIC Product Installed Controls
- Factory installed and programed equipment
specific controllers. CIO Communications Input /
Output Devices Repeater Used to clean and amplify
the CCN sign or as a protocol converter from RS
485 to RS 232 bus signals. Bridge Used to build a
secondary bus system.
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CCN BUS ARCHITECTURE
Terms Description
Temp A single zone stat. Temp(T) A single zone
stat with an internal clock. MS VVT Monitor Stat
with out an internal clock for multi zone
applications. MS(T) VVT Monitor Stat with an
internal clock for multi zone applications. BC VV
T Bypass Control device for pressure control in
multi zone applications. ZC VVT Zone Control
device for zone control in multi zone
applications. NAM Network Access Module for
incoming remote communications
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CCN BUS ARCHITECTURE
CCN PRIMARY BUS
(3 Conductor Shielded stranded wire cable 18 ga.)
Comfort Controllers Or FIDs (CCN)
TEMP (CCS)
CIO (CCN)
PIC (CCN)
VVT (CCS)

• For General CCN Type Devices Theoretical
  Maximum of 239 Devices on any bus.
• For CCS type Devices A Maximum of 32 33CS
  Devices or 8 Scanning Devices (Monitor Stats) on
  any bus.
• This is a Local Area Network (LAN) not a Wide
  Area Network (WAN)

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CCN BUS ARCHITECTURE PICs

• Product Integrated Control
• Is Factory Mounted On Carrier HVAC Equipment With
  Sensors
• VAV Air Terminals
• Air Handling Units
• Chillers
• Rooftop Units

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PIC Architecture
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CCN BUS ARCHITECTURE FID s

• Field Installed Device
• Is An All Purpose Controller For Carrier
  Equipment without PICs Non- Carrier HVAC
  Equipment
• In Addition Controls
• Cooling Towers
• Pumps
• Lights
• Boilers

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203 FID Architecture
CCN Primary Bus
Power 2 - 20 V ac
SIO Bus
Power 1 - 9 V ac
P R OCESSOR
8 INPUT S
8 OUTPUT S
Owners Module
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6400 Comfort Controller Architecture
CCN Primary Bus
Power - 24 V ac
SIO Bus
P R OCESSOR
16 POINTSI/O
16 POINTSI/O
16 POINTSI/O
Local Interface Device
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CIO s ARCHITECTURE

• Communications Input / Output
• For System Level Control Strategies
• Chiller Plant Control
• VAV Air Systems Control
• Loadshed
• Watersource Heatpump Systems
• PTAC System Management

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CIO Module Architecture
CCN Primary Bus
Power - 20 V ac
CIO M o d u l e

• Some CIOs
• Data Collection
• Tent Billing
• Auto Dial Gateway
• Chiller Visor
• Alarm Printer Interace
• Loadshed Module
• Flotronic System Manager

• No Input or Outputs
• All System Level Controls
• Thru Communications.

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CCN BUS ARCHITECTURE
The Key to the CCN BUS is Addressing

• An address is required of all devices on the bus.
• No two devices on the same CCN system may ever
  have the same address.
• A CCN and CCS address consists of a 3 digit bus
  number and a 3 digit device number.

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CCN BUS ARCHITECTURE
CCN BUS is Addressing

• Legal bus numbers are 0 to 239 inclusive
• The primary bus number is always 0
• Secondary bus numbers are 1 to 239 inclusive.
• Legal device numbers are 1 to 239 inclusive.
• A repeater module and NAM configured to work with
  a computer are not addressed.

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CCN BUS
Addressing TEMP Devices

• For a simple and multiple TEMP system, the only
  addressing rule is to never duplicate addresses.
• For a simple TEMP and multiple TEMP system, bus
  communication is at a minimum, and therefore
  usually a single bus is sufficient.

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CCN BUS
Addressing VVT Devices

• For a simple and multiple VVT system, the only
  addressing rule is to never duplicate addresses.
• The bypass controller MUST be addresses one less
  than the monitor stat.
• Zone controllers must be addressed below the
  bypass controller.

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CCN BUS ARCHITECTURE
USE OF REPEATERS
MS(T)
BC
ZC
ZC
MS
BS
ZC
ZC
60 DEVICES or 1,000 Feet
60 DEVICES or 1,000 Feet
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
TEMP
60 DEVICES or 1,000 Feet
59 DEVICES or 1,000 Feet

• Use a repeater every 60 devices (Signal strength
  degradation)
• Use a repeater every 1,000 feet (Reflective
  degradation)

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CCN BUS ARCHITECTURE
USE OF A REPEATER TO CONVERT RS-485 TO RS-232
RS-485
RS-485
MS(T)
BC
ZC
MS
BS
ZC
ZC
Repeater Module used to Convert
RS-232
Runs Comfortworks, Building Supervisor IV Or
Network Service Tool IV
IBM Compatible Computer
Repeater
Repeater Module used to Amplify
RS-485
RS-485
Repeater
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
TEMP

• A Repeater can be used to convert the signal for
  a computer or
• A Repeater can be used to amplify the signal

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CCN BUS ARCHITECTURE
USE OF NETWORK ACCESS MODULE (NAM)
RS-485
RS-485
MS(T)
BC
ZC
MS
BS
ZC
ZC
NAM
RS-232
RunsComfortworks, Building Supervisor IV Or
Network Service Tool IV
IBM Compatible Computer
OR
RS-232
Note A NAM can receive incoming calls, but can
not originate a call.
US Robotics Modem
RS-485
RS-485
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
TEMP

• Use a NAM to convert the signal for a personal
  computer or
• Use a NAM to convert the signal for a Hayes
  compatible modem

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CCN BUS ARCHITECTURE
USE OF BRIDGES
PRIMARY BUS
TEMP
TEMP
TEMP
TEMP
6400
CIO
PIC
SECONDARY BUS
SECONDARY BUS
MS(T)
BC
ZC
ZC
MS
BC
ZC
ZC

• A secondary bus may only be created from the
  primary bus.
• A CCN may be expanded to have up to 239 secondary
  buses.

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CCN BUS ARCHITECTURE
USE OF BRIDGES
PRIMARY BUS
BUS SEGMENT (60/1000)
BUS SEGMENT (60/1000)
Repeater
TEMP
TEMP
6400
CIO
PIC
TEMP
BRIDGE
ADGW
SECONDARY BUS
BUS SEGMENT (60/1000)
BUS SEGMENT (60/1000)
Repeater
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
6400
BUS SEGMENT (60/1000)
BUS SEGMENT (59/1000)
Repeater
TEMP
TEMP
TEMP
6400
CIO
PIC
PIC
TEMP
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CCN BUS
USE OF TSM AS A BRIDGE
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CCN BUS ARCHITECTURE
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CCN BUS ARCHITECTURE
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CCN BUS ARCHITECTURE
Communications Point To Point
MS(T)
BC
ZC
ZC
MS
BS
ZC
ZC
Communication
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
TEMP

• Communication Packet
• Address of Receiver
• Address of Sender
• Communication Message
• CRC (BIT Check

Acknowledge
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CCN BUS ARCHITECTURE
Communications Broadcast
MS(T)
BC
ZC
ZC
MS
BS
ZC
ZC
Broadcast
TEMP
TEMP
TEMP
6400
CIO
PIC
TEMP
TEMP

• Communication Packet
• Special Address Code Meaning This package is to
  be received by All Nodes on the Network
• Address of Sender
• Communication Message
• CRC (BIT Check

Broadcast Acknowledgement
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CCN BUS ARCHITECTURE
Broadcast Communications Rules

• Many CCN devices may broadcast information over
  the network such as time of day or point values
  like outdoor air temperature, or relative
  humidity.
• Broadcast information is sent (or made available)
  to all Network Devices.
• Every BUS should have one device configures as a
  the Broadcast Acknowledger
• The Broadcast Acknowledger acts as a spokes
  person for the entire Bus by acknowledging back
  to the sender that a successful broadcast was
  received.
• Time broadcastors send their internal clock time
  and holiday status twice a day at 100 AM and
  100 PM, as well as when requested to send time
  by another Network Device.

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CCN BUS ARCHITECTURE
USE OF BRIDGES
PRIMARY BUS
TEMP
TEMP
TEMP
TEMP
6400
CIO
PIC
SECONDARY BUS
SECONDARY BUS
MS(T)
BC
ZC
ZC
MS
BC
ZC
ZC

• A secondary bus may only be created from the
  primary bus.
• A CCN may be expanded to have up to 238 secondary
  buses.