Mitsubishi Electronics PAC-YG31CDA operation manual Functional specification

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4.Functional specification

4.1 Communication Protocol Specification

1) Protocol Outline

BACnet/IP which applied to ANSI/ASHRAE 135-1995, 135a, 135b correspondingly on UDP/IP of Ethernet is used.

Ether Header

IP Header

UDP Header

BVLL Header NPCIof BACnetNETWORK APDU of BACnet

2) Ether Header

A physical layer sets a transmission medium to 10 BASET by Ethernet.

3) IP Header

The private address of Class C is recommended (*1). Subnet mask 255.255.255.0 *1: Recommendation value (range) [192.168.1.1]～[192.168.254.254]

[192.168.0.0] and [192.168.255.255] do not use it.

4) UDP Header

The default UDP port of a unicast and broadcasting is set to 47808 (OxBAC0).

5) BVLL Header

BVLC type (one octet)

0x81 fixation (BVLL to BACnet/IP)

BVLC function (one octet)

0x0AAt the time of a unicast

 

0x0B At the time of broadcasting

BVLC length (two octets)

Arbitrary (wording-of-a-telegram length setup: a big endian specification)

6)NPCI of BACnetNETWORK

Version (one octet)

0x01 Fixation

Control (one octet)

0x04 Those with a response message

 

0x00 With no response message

7) APDU of BACnet

It has arbitrary lengths of 1024 or less octets. Contents details are ANSI/ASHRAE135-1995, 135a, 135b references.

8)Application of BACnet

・The instance number of a Device object ・Segmentation

・APDU which can be received ・APDU timeout

・Vender ID ・Process ID

3(Setting change of a instance number is possible) Transmission and reception are un-supported.

1024 octet

3 sec(Setting change of a instance number is possible)

99

blank (Setting change of a process ID is possible)

7

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Contents Please read this manual before using the unit Test operation from BMS ………37………36 Page Making improper improvements or repairs may Safety PrecautionsRelocating the unit you may result in incorrect Other machinesPrecautions for General Usage Other PrecautionsRequirements system recommendations System RequirementsCompatible Airconditioner Checking the G-50A version RestrictionsNumber of units Updating the G-50ASystem Configuration Example System ConfigurationHardware Connection Diagram Group Configuration IC IC IC 01 02 IC IC 04Functional specification Support Object ListList of the objects to be used is shown below Analog InputObject Object type Instance Object and Management ItemNumber Swing Air direction state Xxxx15 Inactive Permit Active Prohibit Filter resetXxxx22 Horizontal Xxxx23 HorizontalService Initiate Execute Service ListInitiate Issue of service Execute Reception and execution of serviceBACnet if transmits Service list for every objectStandard support Setting change is possible BACnet if receivesFunction Event Service specificationProhibition of local operation Mode Object Object type EventSetting functional list Pre-installation Steps InstallationPreparing for installation Setup the serial No BACnet if SetupStarting the setup program 1CD-ROM directory structureClick the Finish button on the Setup Complete screen Check the installation folderSetup completion Check the program folderBACnet if Uninstall UninstallBasic Mouse Operation Part Names and FunctionsWindow Elements DragStart up Initial Startup and ShutdownBefore Startup ShutdownPage Start Up SetBACnet System Setting ProcedureShutdown SetBACnet Open/Close file Get/Put system settingsWindows Elements Title barSystem Setting Procedure Setup for G-50A3 Add/Modify/Delete Group Modify group configuration2 G-50A NO. and IP-Address Add groupInput the number of a group Group setup Group SetupFrom G-50A Select the model of a group ICIndoor unit LC Lossnay unitCommunication setup Setup for BACnetNotification Setting Notification COV notification setupCOV Change Of Value Add COV notification addressDelete notification address Event Notification SettingModify notification address Click the Delete button. The confirmation screen will openAdd notification class Notification Class SettingNotification Address Setting Add notification addressNotification setting parameter Use Speed Type System SetupUnit Of temperature TimePC connections and settings Site AdjustmentSite Adjustment 50A test runTest operation from centralized controller G-50A Tools for Site AdjustmentStep Models IP address range Initial setting of BACnet ifPC using BACnet if For BMS network For G-50A system 50A main unitSettings Setting CheckTime set Date and Time Is it set up correctly? Is it in agreement with the IP address set as G-50A?Test operation from BMS Building Management System IPaddress Group Number BACnet Interface PAC-YG31CDA Site Adjustment sheet50A Number Was operated by BMS Appendix 1 Auto Log In Confirmation Method Appendix 2 Initial Value Page WT04221X03

PAC-YG31CDA specifications

Mitsubishi Electronics has long been recognized for its innovation and commitment to providing high-quality climate control solutions. The PAC-YG31CDA is one of the standout products from the company, designed to enhance the performance and functionality of air conditioning systems.

The PAC-YG31CDA is primarily used as a communication interface for centralized control settings in multi-split air conditioning systems. It allows for integration with various types of building management systems, making it an essential component in modern HVAC (heating, ventilation, and air conditioning) setups. This unit supports simplified control and monitoring, aiming to optimize energy use while maintaining user comfort.

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In terms of performance, the PAC-YG31CDA features a robust design that ensures reliability and durability. Its compact size allows for easy installation and integration into existing systems, minimizing disruption during setup. Furthermore, the unit is energy-efficient, designed to reduce operational costs while enhancing user comfort.

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