Johnson Controls WT-BAC-IP Installation Instructions Manual

Brand: Johnson Controls

Model: WT-BAC-IP

Category: Networking

Type: Installation Instructions Manual

WT-BAC-IP Gateway Installation Instructions

Refer to the QuickLIT website for the most up-to-date version of this document.

Application

The WT-BAC-IP Gateway is a multi-function device that performs wireless mesh network management tasks and

provides bidirectional communication between the wireless devices of the Johnson Controls® WT-4000 Series

Pneumatic-to-Direct Digital Control (DDC) Room Thermostat System and the BACnet® IP Client. The gateway

communicates wirelessly with its associated devices and performs all the high-level system functions, such as

BACnet object creation and object sourcing. This robust mesh network supports up to 100 wireless devices per

WT-BAC-IP Gateway.

The WT-BAC-IP Gateway is designed for indoor, intra-building applications only. The gateway uses

direct-sequence, spread-spectrum RF technology, and operates on the 2.4 GHz Industrial, Scientific, and Medical

(ISM) band. The gateway meets the IEEE 802.15.4 standard for low power, low duty cycle RF transmitting

systems.

North American Emissions Compliance

United States

Canada

IMPORTANT: Use the WT-BAC-IP Gateway only to provide an input to equipment under normal operating

conditions. Where failure or malfunction of the gateway could lead to personal injury or property damage to the

controlled equipment or other property, additional precautions must be designed into the control system.

Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls,

intended to warn of or protect against failure or malfunction of the gateway.

Compliance Statement (Part 15.19)

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired

operation.

Warning (Part 15.21)

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s

authority to operate the equipment.

Industry Canada Statement

The term IC before the certification/registration number only signifies that the Industry Canada technical

specifications were met.

Le terme « IC » précédant le numéro d'accréditation/inscription signifie simplement que le produit est conforme

aux spécifications techniques d'Industry Canada.

WT-BAC-IP Gateway

Installation Instructions

WT-BAC-IP

Part No. 24-10732-21, Rev. B

Issued June 2017

24- 10732-21, Rev. B

(barcode for factory use only)

WT-BAC-IP Gateway Installation Instructions

Installation

Parts Included

• WT-BAC-IP Gateway

• 12 VDC power adapter

• WT-BAC-IP Installation CD

• WT-BAC-IP Configuration Tool Installation Files

• Product literature

Requirements

• Computer with Windows® 7 or newer

• WT-BAC-IP with firmware revision 1.3.5 or newer

Installing the WT-BAC-IP Gateway Software

From the WT-BAC-IP Installation CD, double-click setup.exe, located under the main WT-BAC-IP Configuration

Tool folder. Follow the on-screen instructions to install the program on the computer.

Establishing an IP Connection to the WT-BAC-IP

Use the following steps to establish an IP connection to the WT-BAC-IP.

1. Configure a temporary static IP address on your computer (Windows 7) by going to Start > Control Panel >

View Network Status and Tasks > Change Adapter Settings.

2. Right-click the Local Area Connection (LAN) icon and select Properties. The Local Area Connection

Properties dialogue box appears.

3. Right-click the Internet Protocol Version 4 (TCP/IPv4) item and click Properties.

4. In the Local Area Connection Properties dialogue box, click the Use the following IP address radio button.

Enter 192.168.35.1 for the IP address. Enter 255.255.255.0 for the subnet mask. See the following figure. Click

OK.

Figure 1: Local Area Connection Properties Dialogue Box

WT-BAC-IP Gateway Installation Instructions

Note: Return to the Internet Protocol Version 4 (TCP/IPv4) Properties dialogue box after the WT-BAC-IP is

installed. Click Obtain an IP address automatically. This option returns your computer back to standard Dynamic

Host Configuration Protocol (DHCP).

5. Connect an Ethernet cable from your computer to the WT-BAC-IP Gateway.

6. Plug the 12 VDC adapter into the WT-BAC-IP.

7. Open the WT-BAC-IP Configuration Tool program.

8. In the By MAC Address tab, type in the MAC address printed on the back of the WT-BAC-IP (in the upper left-

hand corner of the product label).

9. Click Connect in the upper right-hand corner of the display window.

Figure 2: Internet Protocol Version 4 (TCP/IPv4) Properties Dialogue Box

Figure 3: Back Side of the WT-BAC-IP

WT-BAC-IP Gateway Installation Instructions

10. Updates appear in the bottom window of the tool. A status update of Connected! appears and the data fields

within the tool are populated as shown in the following figure.

Setting IP Connection Parameters

The WT-BAC-IP is configured with a static IP address of 192.168.35.10 out of the box. Use the following steps to

change the static IP address.

1. Click Edit next to the Connection Mode label.

2. Select the Static radio button. Additional parameters for modification appear as shown in the following figure.

3. Enter the intended value for the IP address, the subnet mask, and the applicable value if your application

requires the use of a default gateway.

4. Click Save.

5. If the intended application calls for a DHCP connection, simply select the DHCP option and click Save.

Changing the Wireless Network Information

All WT Series devices must share the same Group ID (GID) number in order for them to have a wireless

connection. Each device must have a unique Device ID (DID). All devices must be on the same Communications

Channel. If the GID, DID, or Communication Channel on the WT-BAC-IP need to be modified, this action can be

performed through the WT-BAC-IP Configuration Tool.

Notes:

• If multiple WT-BAC-IPs are installed at the site, you must give each WT-BAC-IP a unique GID. DIDs should not

be repeated across networks.

• The DID high byte should always be in the range of 160 to 255. The DID low byte should always be 247.

Figure 4: Connection Established to the WT-BAC-IP

Figure 5: Static IP Display



WT-BAC-IP Gateway Installation Instructions

1. In the Wireless Network Info row of the WT-BAC-IP Configuration Tool, click Edit.

2. Modify the parameters as needed. The DID typically remains at the default 200.247 address.

3. Channels 15, 20, and 25 are recommended as they are between the Wi-Fi communication channels and are

the least susceptible to interference. Check for the best channel before choosing one for the system.

Mapping Connected Devices

Ensure that all WT-4000 Series Thermostats and WT Routers are installed and powered. The GID of devices to be

mapped into the WT-BAC-IP must match.

1. Click View. A grid appears that shows the currently connected devices by their DID. All DIDs in the grid are

currently connected to the gateway.

Note: WT-4000 Series thermostats take up to 5 minutes to appear in the grid.

2. Ensure that the DIDs of all the physically installed devices are present in the grid before proceeding to the next

step.

3. When all devices are connected, you can map their respective BACnet objects by clicking Create.

Note: The Create function creates only BACnet objects for devices that are currently connected. It does not

automatically update the point list when more devices are added. Perform the Create function and the mapping into

the building automation system (BAS) again if more devices are added at a later time.

4. After clicking Create, the dialogue box at the bottom of the tool confirms that the point map has been created.

You can review the point map by clicking View.

Figure 6: Wireless Network Info



Figure 7: Connected Devices Grid

WT-BAC-IP Gateway Installation Instructions

Restarting the BACnet Application

The BACnet application that sources data for the BACnet objects does not run while the WT-BAC-IP Configuration

Tool configures the WT-BAC-IP. The WT-BAC-IP is not discoverable while the tool is in use.

Perform the following steps to restart the BACnet application and enable discovery of the device.

1. Ensure that all configuration tasks are complete (including changing wireless network addresses, modifying IP

connection parameters, and creating the point map).

2. Click Disconnect in the upper right-hand corner of the tool. Restarting the WT-BAC-IP takes up to 30 seconds.

The following image appears.

3. The WT-BAC-IP is now running and discoverable from the BAS.

Figure 8: Point Map Representation

Figure 9: WT-BAC-IP Running Notification

WT-BAC-IP Gateway Installation Instructions

WT-BAC-IP Gateway Point Mapping

The following table lists the BACnet objects associated with the WT-BAC-IP Gateway. The WT-BAC-IP also

sources BACnet objects for all its connected devices. Refer to the respective documentation for more information

about the BACnet objects.

Table 1: BACnet Objects of the WT-BAC-IP Gateway (Part 1 of 2)

Number

Point Name Description BACnet

Object

Type

5 Occupancy_Mode Occupancy mode requested by the BAS:

1 – occupied; 2 – constrained float (unoccupied); 3 to 6 – reserved; 7 –

shoulder mode (shallow setback, also used in demand response events)

7 Comfort_Up_D Comfort zone upper range relative to system master setpoint; default 3°F;

maximum comfort zone 14° F

8 Comfort_Lo_D Comfort zone lower range relative to system master setpoint; default 3°F;

maximum comfort zone 14° F

10 Setback_Up_L Upper temperature limit in unoccupied setback mode; default 85°F; maximum

value restricted by Protect_Up_L temperature (register 12)

11 Setback_Lo_L Lower temperature limit in unoccupied setback mode; default 55°F; minimum

value restricted by Protect_Lo_L temperature (register 13)

12 Protect_Up_L Maximum temperature allowed in the zone; default 90°F AV

13 Protect_Lo_L Minimum temperature allowed in the zone; default 50° F AV

14 Override_Period Override duration with one-minute increments; default 120 minutes; maximum

240 minutes

15 Override_Up_D Comfort zone upper delta during override mode; default 5° F; maximum 14° F AV

16 Override_Lo_D Comfort zone lower delta during override mode; default 5° F; maximum 14° F AV

18 Dead_Band Temperature control deadband; default 1° F; maximum 14° F AV

31 Shoulder_Up_D Upper delta; default 5°F.

In shoulder mode, the device does not call for cool if space temperature is

below setpoint plus upper delta.

Shoulder_Lo_D Lower delta; default 5°F.

In shoulder mode, device does not call for heat if space temperature is above

setpoint minus lower delta.

33 Display_Mode Display mode setting:

0 – normal LCD and button functionality; 1 – temperature is not displayed and

buttons are disabled; 2 – normal LCD functionality but buttons are disabled

If set to any other value, everything is displayed as normal and buttons are

enabled; this feature is not supported in stand-alone mode.

54 UTC_High High indicates 16 bits of 32 bit time stamp in UTC format (UNIX epoch time). AI

55 UTC_Low Low indicates 16 bits of 32 bit time stamp in UTC format (UNIX epoch time). AI

57 Space_Temp Space temperature value in °F AI

58 BL_PSI_Rqstd The branch line pressure requested by the unit based on temperature

measurement, in PSI.

BL_PSI_Msrd The actual branch line pressure measured by the pressure sensor, in PSI. AI

WT-BAC-IP Gateway Installation Instructions

59 MS_Shoulder Bit 10 – motion detector shoulder mode triggered by lack of motion BI

Shoulder_On Bit 7 – shoulder mode button pressed BI

Override_On Bit 6 – override mode button pressed BI

Fan_On Bit 2 – fan on (if applicable) BI

Cool_On Bit 1 – cool on (branch line pressure in cooling zone) BI

Heat_On Bit 0 – heat on (branch line pressure in heating zone) BI

60 Current_Mode The unit’s current mode:

1 – occupied; 2 – constrained float (unoccupied); 3 to 6 – reserved; 7 –

shoulder mode

61 Master_SP The master (system) setpoint specified by the energy management application;

default 70°F.

62 User_SP The user setpoint specified by pressing up/down buttons on the unit; default

70°F.

69 SP_PSI The target branch line pressure when the temperature is at setpoint value;

default 9.0 PSI; valid range 1.0 to 22.0 PSI.

70 Action_Direction Acting direction: 0 (default) – direct acting; 1 – reverse acting AV

Gain Gain (change in branch line pressure in response to temperature change);

default 2.0 PSI for each 1°F change; valid range 1.0 to 5.0 PSI.

71 Throttle_Range Temperature range when pressure changes in response to temperature

change; default 6.0° F; valid range 0.0 to 10.0°F.

72 Unocc_PSI Branch line pressure when unit is in unoccupied mode and within temperature

constrained float limits, in PSI.

73 Low_PSI_Value In the case where Error Reporting Register indicates insufficient pressure,

this register holds the maximum branch line pressure of the system at that time,

in PSI.

79 Temp_Unit The unit of temperature; 0 represents °F, and 1 represents °C. The default is

°F. Any change to this value reboots the device.

MS_Grace The grace period (number of minutes) that the unit waits for motion detection

before it goes into shoulder mode. The default is 30 minutes, and the range is

10 to 100 minutes.

If the unit detects motion while it is in shoulder mode, it comes out of shoulder

mode within 5 minutes.

Motion detection is disabled if this register is set to less than 10 minutes or if

supply pressure is zero.

201 Hop_Count The number of hops through which the device’s data is routed to reach the

MeshGate; value 65535 indicates that the device is offline.

202 1st_Hop_ID_H High byte of device ID of the first hop node AI

1st_Hop_ID_L Low byte of device ID of the first hop node AI

204 RSSI Radio received signal strength (RSSI); signed 8 bit for Modbus register;

BACnet object shows actual value.

Batt_Voltage Battery voltage level in VDC AI

224 RF_Channel The radio channel number used by the device AV

510 Dev_Type This register holds an integer value that identifies the device type in the

wireless network. This is for use by the MeshGate, not for customer

applications.

Table 1: BACnet Objects of the WT-BAC-IP Gateway (Part 2 of 2)

Number

Point Name Description BACnet

Object

Type

WT-BAC-IP Gateway Installation Instructions

Explanation of Key Attributes

The following table lists the descriptions of key attributes of the WT-BAC-IP Gateway.

Technical Specifications

Table 2: WT-BAC-IP Key Attributes

Attribute Description

WT-BAC-IP Version Version level for the BACnet application software

MAC Address Unique 12-Digit HEX address for the WT-BAC-IP

Port UDP Port (default value 47808); editable if changes are necessary

Device Instance BACnet Instance ID; can be modified

Point Map View shows currently mapped BACnet objects. Create maps currently connected devices

and creates a new Point Map.

Online Device Count View shows the Grid View of currently connected devices. Update refreshes the count to

check for newly connected devices.

Wireless Network Info Shows information about the WT-BAC-IP’s GID, DID, and Channel; all three fields are

editable.

Connection Mode Allows the user to switch the WT-BAC-IP between DHCP and Static IP Addressing

WT-BAC-IP Gateway (Part 1 of 2)

Power Requirements 12 VDC external supply

Communications Interface: Ethernet 10Base-T/100Base-TX with RJ-45 Connector

Protocol: BACnet IP

Wireless Band Direct-Sequence, Spread-Spectrum, 2.4 GHz ISM Band

Operating Frequency

Range

2,405 to 2,480 MHz

Channels Quantity: 15

Spacing: 5 MHz

Transmissions Power: 18 dBm maximum

Rate: 250 Kbits for each second

Ambient Conditions Operating: 50 to 104°F (10 to 40°C), 5 to 95% RH, noncondensing

Storage: -4 to 158°F (-20 to 70°C), 5 to 95% RH, noncondensing

Materials Gray ABS plastic housing

Figure 10: WT-BAC-IP LED Functions

Published in U.S.A. www.johnsoncontrols.com

WT-BAC-IP Gateway Installation Instructions

Metasys® and Johnson Controls® are registered trademarks of Johnson Controls.

Building Technologies & Solutions

507 E. Michigan Street, Milwaukee, WI 53202

European Single Point of Contact: NA/SA Single Point of Contact: APAC Single Point of Contact:

JOHNSON CONTROLS

WESTENDHOF 3

45143 ESSEN

GERMANY

JOHNSON CONTROLS

507 E MICHIGAN ST

MILWAUKEE WI 53202

USA

JOHNSON CONTROLS

C/O CONTROLS PRODUCT MANAGEMENT

NO. 22 BLOCK D NEW DISTRICT

WUXI JIANGSU PROVINCE 214142

CHINA

Compliance United States:

Transmission Complies with FCC Part 15.247 Regulations for Low Power Unlicensed

Transmitter FCC Identification: HSW-Z2430HPA

RoHS Compliant (EU Directive)

Canada:

Industry Canada IC: 4492A-Z2430HPA

Shipping Weight 0.33 lb (0.15 kg)

WT-BAC-IP Gateway (Part 2 of 2)

Johnson Controls WT-BAC-IP Installation Instructions Manual

Brand: Johnson Controls

Model: WT-BAC-IP

Category: Networking

Type: Installation Instructions Manual

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Johnson Controls WT-BAC-IP Installation Instructions Manual

Johnson Controls WT-BAC-IP Installation Instructions Manual

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