c arrier c omfort n etwork bus architecture

6/28/98 CCN_BUS 1

Customer Technical Training

CARRIER COMFORTNETWORKBUS ARCHITECTURE

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• 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.

Carrier Comfort Network

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CCN PRIMARY BUS

Comfort Controllers Or FID’s (CCN)

TEMP (CCS)

CIO(CCN)

PIC(CCN)

(3 Conductor Shielded stranded wire cable 18 ga.)

VVT (CCS)

CCN BUS ARCHITECTURE

• 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 Stat’s) on any bus.

• This is a Local Area Network (LAN) not a Wide Area Network (WAN)

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CCN BUS ARCHITECTURE PIC’s

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

SIO Bus

PROCESSOR

LocalInterfaceDevice

12

In

6

out

Power - 20 V acCCN Primary Bus

8or16

POINTS

I/O

8or16

POINTS

I/O

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CCN BUS ARCHITECTURE FID ’s

Field Installed Device• Is An All Purpose Controller For

Carrier Equipment without PIC’s & Non- Carrier HVAC Equipment

• In Addition Controls– Cooling Towers– Pumps– Lights– Boilers

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203 FID Architecture

Power #1 - 9 V acPower #2 - 20 V ac SIO Bus

PROCESSOR

OwnersModule

8

INPUTS

8

OUTPUTS

CCN Primary Bus

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6400 Comfort Controller Architecture

SIO Bus

PROCESSOR

LocalInterfaceDevice

16

POINTS

I/O


16

POINTS

I/O

16

POINTS

I/O

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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

CIO

Module


Some CIO’s:•Data Collection•Tent Billing•Auto Dial Gateway•Chiller Visor•Alarm Printer Interace•Loadshed Module•Flotronic System Manager

No Input or OutputsAll System Level ControlsThru Communications.

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• 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.

The Key to the CCN BUS is Addressing:

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• 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.

CCN BUS is Addressing:Example Address: ( 024 , 127)

Bus Number Device Number

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CCN BUS

• 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.

Addressing TEMP Devices

TEMPTEMPTEMP TEMP

SIMPLE TEMP BUS

TEMPTEMPTEMPTEMP(T)

BUS NUMBER 000 000 000 000 000 000 000 000ELEMENT NUMBER 008 007 006 005 004 003 002 001

Addressing TEMP Devices

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CCN BUS

ZCZCZC ZC

SIMPLE VVT BUS

ZCZCBCMS(T)

BUS NUMBER 000 000 000 000 000 000 000 000ELEMENT NUMBER 008 007 006 005 004 003 002 001

• 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.

Addressing VVT Devices

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

USE OF REPEATERS

MS(T) BC ZC ZC MS BS ZC ZC

TEMPTEMPTEMP6400CIOPICTEMPTEMP

60 DEVICES or 1,000 Feet 60 DEVICES or 1,000 Feet

60 DEVICES or 1,000 Feet59 DEVICES or 1,000 Feet

Repeater

Repeater

Repeater

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

USE OF A REPEATER TO CONVERT RS-485 TO RS-232

MS(T) BC ZC MS BS ZC ZC


IBM Compatible Computer

RS-485

RS-232 Runs: Comfortworks, Building Supervisor IVOr Network Service Tool IV

RS-485

RS-485 RS-485

Repeater Module used to Amplify

Repeater Module used to Convert

Repeater

Repeater

Repeater

Repeater

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

USE OF NETWORK ACCESS MODULE (NAM)

MS(T) BC ZC MS BS ZC ZC


NAM

IBM Compatible Computer

US Robotics Modem

RS-485

RS-232

RS-232OR

Runs:Comfortworks, Building Supervisor IVOr Network Service Tool IV

Note: A NAM can receive incoming calls,but can not originate a call.

RS-485

RS-485 RS-485

Repeater

Repeater

Repeater

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TEMP TEMP TEMPTEMP6400


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

USE OF BRIDGES

MS(T) BC ZC ZC MS BC ZC ZC

CIOPIC

PRIMARY BUS

SECONDARY BUS SECONDARY BUS

BRIDGEBRIDGE

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CCN BUS ARCHITECTUREUSE OF BRIDGES

TEMPTEMP6400CIOPICBRIDGE TEMP

PRIMARY BUS

SECONDARY BUS

BUS SEGMENT (60/1000’)

TEMPTEMPTEMP6400CIOPICPIC TEMP

Repeater

TEMPTEMPTEMP6400CIOPIC6400 TEMP


Repeater

RepeaterBUS SEGMENT (60/1000’)BUS SEGMENT (59/1000’)

Repeater

ADGW

BUS SEGMENT (60/1000’) BUS SEGMENT (60/1000’)

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CCN BUS USE OF TSM AS A BRIDGE

TEMPTEMP6400CIOPICTSM TEMP

PRIMARY BUS

SECONDARY BUS


6400PICPIC6400CIOPICPIC 6400

Repeater

ASIASITCUTCUTCUTCUTCU ASI

Repeater


RepeaterBUS SEGMENT (60/1000’)BUS SEGMENT (59/1000’)

Repeater

ADGW

BUS SEGMENT (60/1000’) BUS SEGMENT (60/1000’)


PIC PIC PIC PIC PIC PIC PIC PIC PIC

48EK

CCN COMMUNICATION BUS

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CCN COMMUNICATIONS BUS

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

Communications Point To Point



Repeater

Repeater

Repeater

Acknowledge

Communication

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• 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

Communications Broadcast



Repeater

Repeater

Repeater

Broadcast

Broadcast Acknowledgement

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TEMP TEMP TEMPTEMP6400


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

USE OF BRIDGES

MS(T) BC ZC ZC MS BC ZC ZC

CIOPIC

PRIMARY BUS

SECONDARY BUS SECONDARY BUS

BRIDGEBRIDGE

c arrier c omfort n etwork bus architecture

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