DDC Online direct digital controls
Honeywell - WEBs-AX  

WEB-602-XPR; WEB-602-XPR-GW (WEB-602-XPR with wireless modem); WEB-602-XPR-GWO (WEB-602-XPR with wireless modem and open license); WEB-602-XPR-O (WEB-602-XPR with open license)

Primary Control Unit
Date Last Saved: 3/5/2012 9:06:25 AM

Product Name(s): WEB-602-XPR; WEB-602-XPR-GW (WEB-602-XPR with wireless modem); WEB-602-XPR-GWO (WEB-602-XPR with wireless modem and open license); WEB-602-XPR-O (WEB-602-XPR with open license)
Product Description: Controller and server platform designed for remote monitoring and control. Combines integrated control, supervision, data logging, alarming, scheduling, network management functions, and a graphical user interface.
Product Application(s): Used for control, monitoring, and energy applications in small to medium facilities. Used for distributed control and monitoring in medium to large facilities, multi-site applications, or large scale control applications.
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): N.A.
Universal Input (AI or DI): 8 0-10 V

0-20 mA

Dry contact
Analog Output (AO): 4 0-10 V
Digital Output (DO): 4 Relay (24 VAC/30 VDC)
Universal Output (UO):
Control Unit Model #:AIDIUIDOAOUOOther
WEB-602-XPR 8 4 4
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other information not provided
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other information not provided
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Both AO and DO
DO Only
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Integral Flow Sensor? N.A.
Integral Damper Actuator? N.A.
Can controller accept occupant override from thermostat? N.A.
Can controller accept occupancy sensor input? N.A.
Expander Boards N.A.
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(2) Ethernet ports @ 10/100 Mbps
(1) EIA-232 port
(1) EIA-485 non isolated port
External Communication Ports, Speeds and Access Devices 1 USB port
optional FTT10 Lon adapter (card only)
optional FTT10 Lon adapter (card and driver)
optional RS-232 port adapter
optional dual port RS-485 adapter (electrically isolated)
optional modem card
Additional Information (Optional)
Network Accessing Capabilities via Controller
Access controller only
Access controller plus additional controllers on network segment / LAN
Access all controllers on system
No access available on this controller
Controller Access Devices
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Zone-Based Interface Access
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
Other information not provided
*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e. 'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
Functions Available Through Field Interface**:View ParamsChange ParamsChange
O&M SupportTAB/Cx Support
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Microprocessor(s) AMCC PowerPC 440, 524 MHz processor
Clock Type
Powered, battery-backed 3 month minimum
Battery powered
Powered, no battery backing
Clock Synchronization yes
Volatile Memory (RAM) Capacity 256 MB SDRAM
Volatile Memory (RAM) Uses
RAM use unrestricted
RAM use restricted as shown below
Information Not Provided
Program Execution / Calculation storage
Data / Trends / Alarms storage
Configuration / Parameter storage
Control Programming storage
Others information not provided
Is Volatile Memory Supported By Battery? yes
Battery Type(s) NiMh battery; optional external 12VDC sealed lead acid battery
Battery Life 3 month minimum
Backup Battery Operating Time 5 minutes is typical
Non-Volatile Memory Capacity (EEPROM/Flash)* 128 MB serial flash
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other information not provided
Additional Information
* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly impact system performance.
Can trend data be stored in this controller? yes
How many total trend values can be stored? information not provided
What is the controllers role in trending? trending source
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
When full, does controller automatically send up trend data, overwrite data, or stop logging data? information not provided
Programming Method(s) WEBs-AX
Resident vs Non-Resident Program Execution information not provided
Resident/Supervisory. This controller supervises the scheduling of other controllers.
Resident/Stand Alone. This controller contains its own schedule.
Non-Resident. This controller is dependent upon another controller for its schedule.
None. This controller has no scheduling features.
Other information not provided
Resident Energy Management
Energy management algorithms for this controller can be custom programmed
Pre-programmed/built-in algorithms available, and are fully editable using custom programming
Pre-Programmed/built-in with limited editing via template-based programming
Controller is not typically used for energy management functions
Others information not provided
Specific Pre-Programmed Algorithms Available
None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy, dry-bulb, CO2, modulating/2-position, etc.)
Other information not provided
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) information not provided
Automatic PID Tuning Feature information not provided
Automatical-Dial Alarm Support information not provided
Does controller perform multiple retries and buffer/store alarm until connection is made? information not provided
Are multiple destinations possible? yes
Upon controller power loss or hardware failure:
Are network communications affected? no
Is loss recognized on/by the network and alarm reported? yes
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Other information not provided
Volatile memory functions?
Retained for life of backup battery
Other information not provided
Upon restoration of power does the controller:
Auto-reboot without operator intervention? information not provided
Automatically reset/synchronize the clock? information not provided
Update all monitored functions? information not provided
Generate an alarm if backup battery is dead? information not provided
Upon network or communications failure does controller:
Continue to operate standalone? yes
Operate with last global settings or user-specified value? N.A.
Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
information not provided
Does network automatically reconfigure upon restoration? information not provided
Does network store 'loss of communications' alarm with time of event? information not provided
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? information not provided
Internal hardware failure? information not provided
Open/shortened sensor? information not provided
Control Enclosure plastic wall mounted chassis
Power Supply Required
Voltage 24 VAC/DC
VA information not provided
Surge Protection
Underwriters Laboratories UL 916
C-UL listed to Canadian Standards Association
FCC Part 15 Class A
CE yes
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided