Daikin MicroTech II Chiller BACnet MS/TP Communication Module

Introduction

This manual provides information regarding the network integration system used with MicroTech® II unit controllers on Daikin Applied chillers. It describes how to install or replace a BACnet® MS/TP communication module on a MicroTech II chiller unit controller. It also explains how to set network parameters and establish communication between the chiller and BACnet network.

Revision History

Notice

© 2020 Daikin Applied, Minneapolis MN. All rights reserved throughout the world.

Daikin Applied reserves the right to change any information contained herein without prior notice. The user is responsible for determining whether this product is appropriate for his or her application.

TM The following are trademarks or registered trademarks of their respective companies: BACnet from American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Windows from Microsoft Corporation, and Daikin Applied, Templifier and MicroTech II from Daikin Applied.

Software Revision

This document supports the following BACnet Communication Module software and firmware, and all subsequent versions, until otherwise indicated.

Current Hardware: Application Software Version: 2.15, Firmware Revision: AeBCM-2.0.5- BeBCM-485-2.0.5

Previous Hardware: Application Software Version: 2.00, Firmware Revision: AmBCM-16 - BmBCM-485-15g

Limited Warranty

Consult your local Daikin Applied representative for warranty details. To find your local Daikin Applied representative, go to www.DaikinApplied.com.

Reference Documents

1. The legacy version of the BACnet Communication Module hardware consisted of a printed circuit board inside a tan metal enclosure, which was mounted to the door of the unit control panel.

Hazardous Information Messages

Recognize Safety Symbols, Words and Labels

The following symbols and labels are used throughout this manual to indicate immediate or potential hazards. It is the owner and installer's responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of property damage and/or product damage, serious personal injury or death. Improper installation, operation and maintenance can void the warranty.

⚠️ CAUTION Cautions indicate potentially hazardous situations, which can result in personal injury or equipment damage if not avoided.

Static sensitive components. Can cause equipment damage.

Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs while power is applied to the panel.

⚠️ WARNING Warnings indicate potentially hazardous situations, which can result in property damage, severe personal injury, or death if not avoided.

⚠️ DANGER Dangers indicate a hazardous situation which will result in death or serious injury if not avoided. Electric shock hazard. Can cause personal injury or equipment damage. This equipment must be properly grounded. Connections and service to the MicroTech II Unit Controller must be performed only by personnel knowledgeable in the operation of the equipment being controlled.

ℹ️ NOTICE This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense. Daikin disclaims any liability resulting from any interference or for the correction thereof.

BACnet Communication Module Overview

The BACnet communication module connects the MicroTech II chiller unit controller to a building automation system (BAS). This interface enables the exchange of BACnet objects between the unit controller and the network. The BACnet communication module, together with the unit controller, support the BACnet MS/TP (EIA 485) data link layer (physical layer).

Features

• Integration into a building automation and control system via BACnet MS/TP (B-AAC profile)
• Simple insertion of the circuit board module into a MicroTech II chiller unit controller
• Several options for setting network parameters via the BACnet Configuration Tool user interface, unit controller, or BAS
• LEDs that indicate communication status and network activity
• BACnet application pre-installed and ready for custom configuration

Specifications

The following section provides a summary of technical data and conformance to agency listings.

General

• Dimensions: 2 3/8" x 1 3/16" (60 x 30 mm)
• Operating Temperature: 14 - 140°F (-10 - 60°C)
• Humidity: 80% RH

Storage and Transportation

• Temperature: -4 - 158°F (-20 - 70°C)
• Humidity: 80% RH

Electrical

• Power: 8-38 VDC (±5%) bus connector, max. 1W
• Network cable: RS-485 (EIA-485)
• Bus connection/Transceiver: 3-wire twisted pair, shielded AWG 20-22, max 3281 ft (1000 m), Galvanic isolation
• Bus termination: A+, B-, GND (3 wires), 1/8 Unit load, 120 Ω end of line resistor for units at start or end of trunk
• Data transmission (baud rate): 9600, 19200, 38400 (default) 76800 bps

Additional Components

• Plug-in network connector: EIA-485 connection plug
• Jumpers (3):
• BACnet Configuration Tool software: Free download on www.DaikinApplied.com

Agency Listings - Unit Controller

NOTE: In this manual, RS-485 and EIA-485 are used synonymously.

Component Data

The BACnet MS/TP communication module is a printed circuit board that inserts directly into the serial card slot of the MicroTech II chiller unit controller as shown in Figure 1. There have been two versions of the BACnet MS/TP communication module. The current version (Figure 2) has a black EIA-485 connector. The previous version (Figure 3) has a green EIA-485 connector.

Figure 1: BACnet MS/TP Communication Module Attached to Unit Controller - This figure shows the communication module plugged into the serial card slot of the MicroTech II unit controller.

Figure 2: Current Version of BACnet MS/TP Hardware - This figure displays the current version of the BACnet MS/TP hardware, featuring a black EIA-485 connector.

Current Hardware

Light Emitting Diodes (LEDs)

The BACnet MS/TP communication module has a Status LED and a Network LED to indicate communication activity and status of the module. These indicators are visible when the communication module is connected to the unit controller and the unit is powered on. See Figure 4 for LED locations.

Figure 4: Current Version of BACnet MS/TP Hardware - This figure illustrates the current version of the BACnet MS/TP hardware, showing the locations of the Status LEDs, Network LEDs, Pushbutton, 8-Pin Header, S1/S2/S3 Switches, and Network Connector.

Figure 3: Previous Version of BACnet MS/TP Hardware - This figure shows the previous version of the BACnet MS/TP hardware.

Status LED

The Status LED indicates the communication state between the communication module and the unit controller. Table 1 describes the activity of the Status LED. During power-up or restart, the Status LED shows the following sequence:

• Immediately after startup: quick flashing red-green
• ~2 seconds after startup: steady green
• ~30 seconds after startup: regularly flashing green

Once the startup process is complete, the Status LED consistently flashes green when the module is operating correctly. The table below describes the color and activity of the Status LED.

Table 1: Status LED Activity - Current Hardware

Network LED

The Network LED indicates the communication status between the BACnet communication module and the BACnet MS/ TP network. Table 2 describes the activity of the Network LED. During power-up or restart, the Network LED shows the following sequence:

• Immediately after startup: LED is unlit
• ~20 seconds after startup: LED alternates Green-Red-Green-Red

Once the startup sequence is complete, the table below describes the color and activity of the Network LED.

Table 2: Network LED Activity - Current Hardware

BACnet Network Connector

A 3-pin network plug connects the communication module to the BACnet MS/TP network (Figure 4). The BACnet MS/ TP module is a 2-wire EIA-485 device, so only the + (signal positive) and - (signal negative) terminals should be used.

8-Pin Header

The 8-pin header connects the unit controller to the communication module (Figure 4).

S1, S2, and S3 Switches

Switches S1, S2, and S3 are located inside the front opening of the cover (Figure 4).

• Switch S1 adds a 510-Ω polarization resistance between the negative data line (-) and GND.
• Switch S2 adds a 120-Ω terminal resistance between the two data lines (+) and (-).
• Switch S3 adds a 510-Ω polarization resistance between the positive data line (+) and the +VCC internal voltage.

Refer to Installation and Mounting for information on how to set these switches.

Pushbutton

The pushbutton is used to either reboot the communication module or temporarily restore the factory defaults (Figure 4). Refer to the Restart or Reset the Communication Module section for detailed information about when and how to use the pushbutton.

Previous Hardware

Light Emitting Diodes (LEDs)

The BACnet MS/TP communication module has Status LEDs and a RS-485 LEDs to indicate communication activity and status of the module. These indicators are visible when the communication module is connected to the unit controller and the unit is powered on. See Figure 5 for LED locations.

Figure 5: Current Version of BACnet MS/TP Hardware - This figure shows the previous version of the BACnet MS/TP hardware, indicating locations of jumpers, LEDs, pushbutton, 8-pin header, network connector, and RS-485 LEDs.

Status LED

The Status LED indicates the communication state between the communication module and the unit controller. Table 3 describes the activity of the Status LED. During power-up or restart, the Status LED shows the following sequence:

• Off
• Two seconds after startup: quick flashing red-green
• Five seconds after startup: steady green
• ~50 seconds after startup: regularly flashing

Once the startup process is complete, the Status LED blinks at regular intervals. Table 3 below describes the color and activity of the Status LED.

Table 3: Status LED Activity - Previous Hardware

Network LED

The Network LED indicates the communication status between the BACnet communication module and the BACnet MS/TP network. Table 4 describes the status of the RS-485 LED.

Table 4: Network LED Activity - Previous Hardware

BACnet Network Connector

A 3-pin network plug connects the communication module to the BACnet MS/TP network (Figure 5). The BACnet MS/ TP module is a 2-wire EIA-485 device, so only the + (signal positive) and - (signal negative) terminals should be used.

8-Pin Header

The 8-pin header connects the unit controller to the communication module (Figure 5).

P1, P2, and P3 Jumpers

Jumpers P1, P2, and P3 are located inside the front opening of the cover (Figure 5).

• Jumper P1 Adds a 510-Ω polarization resistance between the negative data line (-) and GND.
• Jumper P2 Adds a 120-Ω terminal resistance between the two data lines (+) and (-).
• Jumper P3 Adds a 510-Ω polarization resistance between the positive data line (+) and the +5Vdc internal voltage.

Refer to See Installation and Mounting on page 8 for information on how to set these jumpers.

Pushbutton

The pushbutton is used to either reboot the communication module or temporarily restore the factory defaults (Figure 5). Refer to the Restart or Reset the Communication Module section for detailed information about when and how to use the pushbutton.

Installation and Mounting

The following section describes how to field install a new BACnet MS/TP communication module or replace an existing module on the MicroTech II chiller unit controller.

⚠️ CAUTION Electrostatic discharge hazard. Can cause equipment damage.

This equipment contains sensitive electronic components that may be damaged by electrostatic discharge from your hands. Before you handle a communication module, you need to touch a grounded object, such as the metal enclosure, in order to discharge the electrostatic potential from your body.

⚠️ WARNING Electric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Only personnel knowledgeable in the operation of the equipment being controlled must perform connections and service to the unit controller.

Field Installation Kit

The communication module field-installed kit ships with the following items:

Current Hardware:

• The BACnet MS/TP communication module circuit board and plastic cover
• EIA-485 plug-in network connector (attached to module)
• This Manual (IM 906)

Previous Hardware:

• The BACnet MS/TP communication module circuit board and plastic cover
• EIA-485 plug-in network connector (attached to module)
• Three jumpers (attached to inside cover of module)
• Ferrite-lined plastic enclosure (for noise reduction, if needed)
• This Manual (IM 906)

Installing a new Communication Module

Follow these steps to install a new communication module on the unit controller.

1. Remove power from the unit controller.
2. Locate the serial card slot on the controller (Figure 6).
   Figure 6: Serial Card Slot in Unit Controller - This figure shows the serial card slot on the MicroTech II unit controller, highlighting the area where the communication module is installed.
3. Remove the existing cover from the serial card slot if it has not already been removed. Use a small screwdriver to carefully pry the cover off from one end (Figure 7).
   Figure 7: Remove Serial Card Slot Cover - This figure illustrates the process of removing the serial card slot cover using a small screwdriver.
4. Grasp the communication module, with the network connector on the underside. The 8-pin header must mate to the 8-pin plug in the unit controller. The plug has a guide on each end to direct it into the mating guide on the communication module header. Figure 8 shows the serial card slot with the 8-pin plug that mates to the header on the communication module.
   Figure 8: Serial Card Slot Connection - This figure shows the serial card slot and the 8-pin plug that connects to the communication module's header.
5. Insert the communication module, pointed up, into the slot. Keeping it level, roll the module into position as you guide it into the slot, feeling the connectors line up (Figure 9, Steps 1 and 2).
   Figure 9: Inserting the Communication Module - This figure shows the steps for inserting the communication module into the serial card slot, emphasizing feeling the connectors align.
6. When you feel the connectors align, press the communication module into the plug. Verify that the module is firmly connected (Figure 9, Step 3).

NOTE: Previous hardware version is shown below. However, the installation process for current version hardware is identical.

Replacing a Communication Module

Follow these steps to remove an existing communication module from unit controller and replace it with a new one.

1. Remove power from the unit controller.
2. Locate the serial card slot on the unit controller (Figure 6).
3. Pull the network cable connector from the communication module.
4. Remove the existing cover from the serial card slot. Use a small screwdriver to carefully pry it off from one end (Figure 7).
5. Grasp the communication module, with the network connector on the underside. The 8-pin header must mate to the 8-pin plug in the unit controller. The plug has a guide on each end to direct it into the mating guide on the communication module header. Figure 8 shows the serial card slot with the 8-pin plug that mates to the header on the communication module.
6. Insert the communication module, pointed up, into the slot. Keeping it level, roll the module into position as you guide it into the slot, feeling the connectors line up.
7. When you feel the connectors align, press the communication module into the connector. Verify that the communication module is firmly connected.
8. If needed, activate dip switches S1, S2, and S3 (current hardware) as shown in Figure 10, or install the P1, P2, and P3 jumpers (previous hardware) as shown in Figure 11. This step is only required if it is the first or last unit on the network. Do not activate switches or insert the jumpers on intermediate units.
   Figure 10: Dip Switch Positions (Current Hardware) - This figure illustrates the correct positions for dip switches S1, S2, and S3 on the current hardware.
   Figure 11: Jumper Connections (Previous Hardware) - This figure shows the correct placement for jumpers P1, P2, and P3 on the previous hardware.
9. Insert the plug-in connector to the communication module.
10. Mount the plastic cover (provided in the field kit) on the serial card slot. Slip the cover over the network connector plug (Figure 12).
    Figure 12: BACnet MS/TP Communication Module with Cover (Current Hardware) - This figure shows the BACnet MS/TP Communication Module with its cover installed.
11. Connect the communication module to the network (Figure 14 and Figure 15):
    a. Route the network cable through the knockout and to the communication module.
    b. Connect the positive (+) wire of the network cable to Pin 2 of the connector plug.
    c. Connect the negative (-) wire to Pin 3 of the connector plug. Note that no wire is connected to Pin 1 (GND).
    Figure 14: Network Cable Routing and Connections - This figure illustrates how to route and connect the network cable to the communication module.
    Figure 15: Network Connection Detail - This figure provides a close-up view of the network connection, showing Pin 2 (+) and Pin 3 (-) for the RS-485 network cable.
12. (Optional) Install the ferrite-lined plastic enclosure on the network cable for noise reduction (Figure 13).
    Figure 13: Ferrite Enclosure - This figure shows the ferrite enclosure used for noise reduction on the network cable.

Network Configuration

Set up Network Communication

The following section describes how to configure the BACnet MS/TP communication module for BAS network integration using the BACnet Configuration Tool.

The communication module, when connected properly to the unit controller, is ready to operate with the factory default values of the network parameters. Many default values may be changed with the unit controller keypad or via the network. Several key parameters require the use of Daikin Applied's BACnet Configuration Tool. The objective here is to explain how to set addressing parameters for the communication module using the BACnet Configuration Tool.

These instructions assume that the user is familiar with common BACnet concepts, terminology, and addressing requirements.

Getting Started

The BACnet Configuration Tool is a Microsoft® Windows® based interface used in conjunction with the communication module. The software is available as a free download on the Daikin Applied website. The purpose of the BACnet Configuration Tool is to set, modify, and test network addressing parameters for the communication module. The Configuration Tool displays the BACnet objects and supported properties. It is also used to download new firmware or a new CSV (comma separated variable file), if necessary.

The BACnet Configuration Tool must be used to set the following parameters:

• Baud rate
• Device instance number
• MAC address (particularly with multiple chillers on a single network)

BACnet Configuration Tool Interface Overview

There are four main components to the BACnet Configuration Tool user interface:

• The initial BACnet Configuration MAC Layer Select dialog pop-up box
• The main application with four tabs as described in Table 5
• The BACdoor OEM Client Status icon and window
• The MS/TP MAC Layer Status icon and window – for diagnostic use only

Table 5: BACnet Configuration Tool Interface Details

The Configuration Tool as a BACnet Device

The Configuration Tool uses standard BACnet commands when communicating via a BACnet network. For example, it issues a ReadProperty or WriteProperty request to the device object (in this case, the Chiller Unit Controller). By default, the Configuration Tool is assigned the device instance 3333 and the MS/TP MAC address 1. This can be changed using the BACdoor OEM Client configuration dialog described in the BACdoor OEM Client Status window section of this document.

How to use these Instructions

The following instructions are organized into these key subjects:

1. Installation and Setup
2. Launch and use the BACnet Configuration Tool
3. Verify BACnet Communication
4. Download BACnet Firmware Files
5. Change BACnet Configuration Tool Addressing Parameters
6. BACnet MS/TP MAC Layer Select Options
7. Restart or Reset the Communication Module

Refer to sections #1-3 if:

• You are downloading or accessing the BACnet Configuration Tool for the first time
• You have just installed a new communication module, or have recently replaced a module
• You want to change a previously configured parameter(s) on a communication module that is already installed and functioning on the unit controller
• You want to confirm BAS communication

Sections #4-6 cover additional or optional features of the BACnet Configuration Tool. Refer to any of these sections if:

• You need to download BACnet firmware files or a CSV file - see page 18
• You want to change the configuration options for the BACnet Configuration Tool itself. See Change BACnet Configuration Tool Addressing Parameters on page 18
• You need to confirm the BACnet MS/TP information packets being passed to the network. See BACnet MS/TP MAC Layer Select Options on page 19

Finally, section #7 describes how to reset or return the communication module to factory default values using the pushbutton. See Restart or Reset the Communication Module on page 20.

Windows and PC Requirements

Windows Requirements

The BACnet Configuration Tool is compatible with Windows XP and newer operating system versions.

PC Requirements

An EIA-485 interface is required for use with the BACnet Configuration Tool when connecting to the communication module. An EIA-485 interface can be achieved by one of the following means:

1. Insert an external EIA-485 converter into a USB port on your PC
2. Connect an external RS-232 to EIA-485 converter to an existing PC serial port.
3. Insert an internal EIA-485 PC adapter into your PC.

NOTE: The EIA-485 interface is not included with the BACnet Communication Module kit. It is available through B & B SmartWorx (www.bb-elec.com) or other suppliers.

⚠️ WARNING Electric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Only personnel knowledgeable in the operation of the equipment being controlled must perform connections and service to the unit controller.

Installation and Setup

1. Download the BACnet Configuration Tool from https://oslo.daikinapplied.com/api/sharepoint/getdocument/Doc100/InstallBCMCFG230.zip or contact the Daikin Applied Controls Customer Support group at 866-462-7829 for direction to the download.
2. Install the BACnet Configuration Tool to your PC (see Windows and PC Requirements). For support purposes, it is recommended that you install to the default directory.
3. Verify the communication module is installed in the Serial Slot of the unit controller. See Installation and Mounting on page 8.
4. Verify that the EIA-485 converter is properly connected properly to the PC, and that the wiring between the communication module and the EIA-485 converter have the correct + and - terminals connected.
5. Using the keypad, verify the "Protocol=" on the Network Config menu of the unit controller is set to BACnet. Refer to the appropriate MicroTech II chiller unit controller operation manual (See Reference Documents on page 3) for more information about using the keypad.
6. Double-click on BACnetCFG.exe from the folder in which it was installed. The default installation path is C:\Program Files\DaikinApplied\Chiller BACnet Configuration Tool.

Launch and use the BACnet Configuration Tool

1. Navigate to the BACnet Configuration Tool (Start/Programs/DaikinApplied/Chiller BACnet Configuration Tool) or double-click on the desktop icon, if present.
2. When the Configuration Tool opens, the BACnet MAC Layer Select dialog box appears (Figure 16).
   Figure 16: BACnet MAC Layer Select Dialog Box - This dialog box allows the user to select the BACnet MAC Layer Type.
3. Select both BACnet MS/TP and No Router options and click OK.

NOTE: If you have trouble opening the MS/TP portion of the BACnet Configuration Tool, make sure the COM port on the PC is available and working properly, then verify that the BACnet Configuration Tool is using the same COM port. The default COM Port for the Configuration Tool is 1. See Troubleshooting for additional tips.

Table 6: Configuration Tool Default Values

Set Network Parameters

It is now possible to set the Device Instance Number, MS/TP Station Address (i.e. MAC Address), Max Master, and Baud Rate (in that order). Table 7 shows the full list of available parameters, defaults, and descriptions.

NOTE: BACnet communication modules with software application versions prior to 2.0 and firmware revision AmBCM-16 - BmBCM-485-15g support 62 BACnet objects. BACnet communication modules with software application versions 2.0 (AmBCM-16 - BmBCM-485-15g) and newer support 131 BACnet objects. This difference in number of objects is visible when reading the object lists as described in the following section.

1. Enter the communication module's current Device Instance in the upper left of the screen (Figure 17, box #1).
2. Select Read Object List (Figure 18, box #2). If the BACnet Configuration Tool is communicating with the module, it counts from 0 to 131 (or 62) as shown in Figure 17, box #3.
   Figure 17: Initiate Communications - This figure shows the BACnet Communication Module Configuration screen, highlighting the Device Instance and Read Object List button.
3. After the Configuration Tool has successfully counted from 0 to 131 (or 62), press the Read button in the upper left portion of the screen.
4. Verify that the Read/Write Status field counts up to 100%. Once this is complete, the MS/TP Station Address and Max Master fields become populated with values (Figure 18).
   Figure 18: Configuration Tool Communicating Properly - This figure shows the BACnet Communication Module Configuration screen after successful communication, displaying populated fields.

Change the Device Instance Number

Follow these steps (Figure 19):

1. Select Enable Device Instance radio button. This deactivates most of the fields and allows the Device Instance to be modified.
2. Enter the new Device Instance Number for the communication module.
3. Press the Write button and verify that it reaches a value of 100%.
4. Close and re-open the BACnet Configuration Tool.
5. Repeat Steps 1-4 using the new Device Instance Number.
6. Select Disable Device Instance radio button.
   Figure 19: Change Device Instance - This figure shows the BACnet Communication Module Configuration screen with the Device Instance modification options.

Change MS/TP Station Address, Max Master, and Max Info Frames

Change MS/TP Station Address (i.e. MAC Address for the communication module), Max Master, and Max Info Frames as desired. Default values are shown in Table 7.

NOTE: The Max Master value should match the largest MS/TP Station Address value to provide maximum system efficiency. If the largest MS/TP Station Address on the network is not known, use a Max Master value of 127. The Max Master value should always be set equal to or less than 127.

Change the Baud Rate

Change the Baud Rate of the communication module from the default value of 38400, if required by your network (7).

NOTE: Many computers do not support a Baud Rate of 76800. For this reason, your PC may no longer communicate to the module after its Baud Rate has been set to 76800. However, this does not mean that there is an issue with the module. If necessary, to reconnect to the communication module after making the change, please refer to the Reset Factory

Defaults When the Chiller is Off (or On) for further instructions.

8. Press the Write button in the upper left portion of the screen. The Read/Write Status then counts to 100%.
9. After reaching 100%, press the Reboot button in the lower right portion of screen. Performing this step reboots the communication module, not the BACnet Configuration Tool or the unit controller.
10. Verify that the LED behavior on the communication module changes, indicating that a reboot has occurred.
11. Allow the communication module at least two minutes to reboot, and then close and re-open the BACnet Configuration Tool.
12. Re-establish communication by following these steps:
    a. Enter the Device Instance Number in the BACnet Device Instance field in the upper left portion of the screen.
    b. Press the Read Object List button and wait until it reaches a value of 0 to 131 (or 62).
    c. Press the Read button and verify that it reaches a value of 100%.
    d. Verify that all parameters are now at their desired values.

Table 7: BACnet Device Tab - Network Parameters and Options

Verify BACnet Communication

The BACnet Configuration Tool can also be used to verify that the communication module is successfully passing data to the network. The following section describes how to use the Test tab for this purpose.

1. Open the BACnet Configuration Tool and navigate to the Test tab (Figure 20).
   Figure 20: Open Test Tab and Select Object ID - This figure shows the BACnet Configuration Tool with the Test tab selected and the ObjectID/ObjectName/Units option chosen.
2. Select the center radio button “ObjectID/ObjectName/ Units.”
3. Press the Read button in the upper left-hand portion of the screen. The Read Status counts to 100% while the Object ID, Object Name, and Present Value fields populate.
4. After reaching 100%, check the Present Value of the variables to verify that they are reading actual current values (Figure 21).
   Figure 21: Read Present Values - This figure shows the BACnet Configuration Tool displaying present values for various objects after a successful read operation.

NOTE: Another way to verify BACnet communication is to record the present values, then perform a second Read a few minutes later and confirm if some of the temperature measurement values have changed slightly over time.

Download BACnet Firmware Files

New or updated firmware and/or CSV files can be downloaded using the BACnet Configuration Tool's System tab.

NOTE: These files do not need to be updated unless instructed by the Daikin Applied Controls group.

The steps below describe the downloading process. Table 8 describes the properties and buttons available on this tab.

1. Go to www.DaikinApplied.com to download the necessary file(s) or call the Daikin Applied Controls Customer Support group at 866-462-7829 to request a copy of the firmware or CSV file.
2. Save the file on your hard drive.
3. Open the BACnet Configuration Tool, read the Object List, then Read the Device Properties.
4. Navigate to the System tab (Figure 22).
   Figure 22: System Tab - This figure shows the System tab of the BACnet Configuration Tool, displaying options for firmware and file downloads.
5. Click the Browse Button, then locate and select the desired file from your hard drive. The type of file to be downloaded depends on the filename and its extension. Typical Filenames are:
   
   • flash_apps.bin
   • flash_sys.bin
   • flash_apps-20170101.car
   • bcm.csv
6. Click on the Download button.
7. Once the download is complete, reboot the communication module.
8. View the firmware version to confirm the update was successful.

NOTE: Do not load BACnet files without first consulting Daikin Applied Controls Customer Support. It is not expected for the BACnet module to be routinely updated in the field. If the module must be updated and both BACnet software and firmware must be downloaded to the module, the BACnet firmware (flash_sys) file must be downloaded first, then the software (flash_apps) file should be downloaded.

Table 8: System Tab Details

Table 9: BACnet Files for Download

Change BACnet Configuration Tool Addressing Parameters

The BACdoor OEM Client Status tab is available for diagnostic purposes or to change the settings of the BACnet Configuration Tool itself. It is not used to modify settings specific to the communication module. It is only required if any of the following statements are true:

1. The Baud Rate was modified from 38400
2. The MSTP Station (MAC) Address was set to 1
3. The Device Instance of the communication module has been set to 3333, which is the same default value as the BACnet Configuration Tool
4. If the computer setting for the EIA-485 converter needs to be changed from Comm Port 1

NOTE: In order for the BACnet Configuration Tool and the communication module to operate correctly, they must both be at the same Baud Rate but have different Device Instance Numbers and MS/TP Nodes.

The BACnet Configuration Tool uses standard BACnet commands when communicating via a BACnet network. For example, it issues a ReadProperty or WriteProperty request to the device object (in this case, the chiller unit controller). The BACdoor OEM Client Status displays the status of BACnet packets as they are being exchanged among the BACnet Configuration Tool, the communication module, and any other BACnet devices on the network. It also displays a list of all devices that initiate BACnet I_Am service packets.

Typically the BACdoor OEM Client Status window can remain minimized in the Task Bar. It is separated from the BACnet Configuration Tool because the BACnet Configuration Tool rarely requires changes. The separation also helps to differentiate the BACnet Configuration Tool parameters from the communication module properties.

Follow these steps to change Baud Rate, MSTP Station Address, Device Instance, or other parameters specific to the BACnet Configuration Tool:

1. Navigate to the BACdoor OEM Client Library icon on the lower right of the screen (Figure 23). This icon appears when the BACnet Configuration Tool is open.
   Figure 23: BACdoor OEM Client Library - This icon indicates the BACdoor OEM Client Library is active.
2. Double-click on the BACdoor OEM Client Library icon to open the BACdoor OEM Client Library Configuration screen (Figure 24). The information on this screen indicates the BACnet address settings for the BACnet Configuration Tool.
   Figure 24: BACdoor OEM Client Library Configuration - This screen allows configuration of BACnet address settings for the BACdoor OEM Client Library.
3. Change the BACnet Configuration Tool's addressing parameters as necessary.
4. When the changes are completed, select OK.
5. Close and re-open the BACnet Configuration Tool to save the changes.

The BACnet Configuration Tool supports the following BACnet Media Access Control (MAC) layers as displayed in the layer select window (Figure 16).

• BACnet ISO 8802-3 "Ethernet"
• BACnet/IP
• BACnet Master Slave/Token Passing (MS/TP) over EIA-485

The BACnet MS/TP MAC Layer Select tab can be used to display network information packets. The BACnet MS/TP MAC Layer Status window is minimized into the Windows Tool Bar at the bottom of the display screen and is indicated by the [icon]. Follow these steps to use this feature:

1. Click the [icon] to make the BACnet MS/TP MAC Layer Status window visible (Figure 25).
   Figure 25: BACnet MS/TP MAC Layer Status Window - This window displays the status of BACnet MS/TP MAC layer activity.
2. Select Trace All Messages from the View drop-down menu to expand the available information. Minimize the BACnet MS/TP Layer Select during an image upload.

The BACnet MS/TP MAC Layer Status expanded window now displays the status of MS/TP packets as they are being exchanged among the BACnet Configuration Tool, the communication module, and any other BACnet MS/TP Devices on the network (Figure 26).
Figure 26: MS/TP MAC Layer Status Expanded Window - This expanded view shows the exchange of MS/TP packets between devices.

BACnet MS/TP MAC Layer Select Options

NOTE: Use the BACnet MS/TP MAC Layer Status portion of the BACnet Configuration Tool for diagnostic purposes only as it impacts BACnet MS/TP operation.

Setup for Automatic BACnet MAC Layer Opening

The BACnet Configuration Tool can be set up so that it bypasses the MAC Layer Select window altogether to automatically open using with the pre-defined BACnet MAC layer type. Follow the steps below should you choose to enable this feature:

1. Create a file named BACSET.INI in the Windows or WINNT folder using a text editor such as Notepad. Skip this step if a file named BACSET.ini already exists.
2. Place the following line as the first line of the file: [General]
3. Place the following line on the second line of the file: MACtype=MSTP
4. Save and close the file.

Restart or Reset the Communication Module

The communication module's pushbutton is used to restart the communication module or reset it to the default factory values. Figure 3 shows the location of the pushbutton. Below are the parameters that revert to default values when the pushbutton has been pressed. Refer to Table 7 for acceptable ranges and full descriptions of these parameters.

Restart the Communication Module

1. Verify that the communication module is installed correctly with the Status LEDs flashing continuously.
2. Hold the pushbutton for more than five seconds and no more than 10 seconds.
3. Around 10 seconds after releasing the button, the Status LEDs stop flashing, and 15 seconds later the communication module restarts. At this point, the Status LEDs are quickly flashing (red-green-red-green...).

Reset Factory Defaults When the Chiller is Off

1. Unplug network connections from the communication module.
2. Press and hold down the pushbutton for at least 20 seconds.
3. Apply power to the unit controller.
4. Keep the pushbutton pressed for at least 20 seconds.
5. Release the pushbutton once the Status LEDs start to blink red.
6. After three slow red blinks, the LEDs turn green and then rapidly blink dark red three times to indicate the command has been successful.

Reset Factory Defaults When the Chiller is On

1. Unplug network connections from the communication module.
2. Press the pushbutton for at least five seconds and no more than 10 seconds.
3. Release the pushbutton.
4. After another five seconds, press and hold the pushbutton again. The Status LEDs stop flashing and then quickly flash red.
5. Release the pushbutton when the status LEDs start slowly flashing red.
6. After three slow red blinks, the LEDs turn green and then rapidly blink dark red three times to indicate the command has been successful.

NOTE: After successfully using the pushbutton, the communication module only retains the default parameter values until the next reboot is performed. The communication module implements the latest user-specified values after a reboot has been performed without the pushbutton being pressed.

Troubleshooting

Troubleshooting Procedures

Follow these general procedures if you can control the MicroTech II chiller unit controller from the keypad/display, but are not able to communicate with the unit via the network. Also refer to Table 10 to diagnose and correct issues related to the setup and use of the BACnet Configuration Tool.

Network Parameters

• Confirm that the BACnet communication module is inserted properly and that the LEDs are functioning properly (Table 1 and Table 2).
• Verify that network parameters are set correctly as shown in Table 7.
• Make sure there are no duplicate devices on the network.
• Verify the unit controller is set up to communicate BACnet using the keypad/display. Refer to the proper Chiller Unit Controller OM for details.

Network wiring

If performance is unsatisfactory or network is experiencing issues such as noise, loss of data packets, or collisions:

• Confirm that the shield is landed at only one point in the trunk.
• Be aware that network topology must be daisy-chain or line topology (no T-Taps or ring layout).
• Verify that network wiring does not exceed 4000 ft total distance limit (without repeaters) at 76800 bps baud.
• Verify that polarity is maintained.
• Check that there are end-of-line termination resistors at the first and last device on the trunk. This is required by the RS-485 specification.
• Verify that the network trunk avoids strong sources of electromagnetic interference (EMI).
• Verify that the network trunk is not located near a DC load switch (relay).

Communications

• Verify that other devices on the network are still communicating.
• Verify that all appropriate configuration has been done to BAS server.

Contact the Daikin Applied Controls Customer Support group at 866-462-7829 for additional assistance, if necessary.

Table 10: BACnet Configuration Tool Troubleshooting

Parts List

Table 11: Replacement Parts List

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787).

Daikin Applied Training and Development

Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

Warranty

All Daikin equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local Daikin Applied representative for warranty details. To find your local Daikin Applied representative, go to www.DaikinApplied.com.

Aftermarket Services

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787). To find your local service office, visit www.DaikinApplied.com or call 800-432-1342.

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.DaikinApplied.com.

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