DDC Online direct digital controls
Honeywell - WEBs-AX  

WEB-600; WEB-600-O (WEB-600 with open license); WEB-600-O-US (WEB-600 with open license manufactured in the US); WEB-600-US (WEB-600 manufactured in the US)

Primary Control Unit
Date Last Saved: 3/5/2012 9:06:17 AM

Product Name(s): WEB-600; WEB-600-O (WEB-600 with open license); WEB-600-O-US (WEB-600 with open license manufactured in the US); WEB-600-US (WEB-600 manufactured in the US)
Product Description: Primary controller that provides integrated control, supervising, data logging, alarming, scheduling, and network management functions with internet connectivity and web serving capabilities.
Product Application(s): Applicable for small facilities, remote sites, or distributing control. Also applicable for monitoring in large facilities. Optional I/O modules can be plugged in for applications where local control is required.
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): N.A.
Universal Input (AI or DI): See I/O Expansion 10K Thermister


Dry Contact
Analog Output (AO): See I/O Expansion 0-10Vdc
Digital Output (DO): See I/O Expansion Relay (Max 30V/.5A)
Universal Output (UO):
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
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 WEB optional I/O modules, up to four per WEB-600 controller, 2 per WEB-600 controller if combined with a 34 Point I/O module.
Expansion Device Model #AIDIUIDOAOUOOther
WEB-IO-16 8 4 4
WEB-IO-34 16 10 8
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 Optional RS-232 Port Adapter

Optional Dual Port RS-485 Adapter (electrically isolated)

Optional Modem Card

Optional LonWorks FTT-10A card and driver

Optional FTT10 Lon adapter (card only)
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)
*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) IBM PowerPC 440 524 Mhz processor
Clock Type
Powered, battery-backed 3 month maximum
Battery powered
Powered, no battery backing
Clock Synchronization Yes with WebStation or Internet connection
Volatile Memory (RAM) Capacity 128MB DDR RAM
Expandable to 256MB DDR RAM
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
Is Volatile Memory Supported By Battery? 5 minutes is typical
Battery Type(s) Information not provided
Battery Life Information not provided
Backup Battery Operating Time 5 minutes typical.
Three months for clock.
Non-Volatile Memory Capacity (EEPROM/Flash)* 128MB Serial Flash
Expandable to 256MB
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
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? Determined by resource count
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? Automatically sends up data to WebStation
Programming Method(s) WebsPro-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.
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
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.)
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) Yes (PPI,PID)
Automatic PID Tuning Feature No
Automatical-Dial Alarm Support Optional modem card
Does controller perform multiple retries and buffer/store alarm until connection is made? Yes
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 by WebStation
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Volatile memory functions?
Retained for life of backup battery
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Yes
Automatically reset/synchronize the clock? Yes
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? Yes
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.)
Does network automatically reconfigure upon restoration? Yes
Does network store 'loss of communications' alarm with time of event? Yes
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? Yes
Internal hardware failure? N.A.
Open/shortened sensor? N.A.
Control Enclosure Plastic, din rail or screw mounted chassis
Power Supply Required
Voltage 90-263 VAC, 50/60Hz, Auto Adjusting


120 VAC, 50-60 Hz
VA Information not provided
Surge Protection
Underwriters Laboratories UL 916, C-UL listed to Canadian Standards Association (CSA)
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