tekmar 482 tN4 Gateway - Manual (Page 11)

11 of 12 © 2012 D 482 - 01/12
tekmarNet ® Home Automation Protocol
Several leading home automation control companies
have worked together with tekmar and have created
software drivers for the tN4 Gateway 482 and tekmarNet
®
compatible products. These software drivers are available
from the home automation control company.
Refer to the 482 product page on tekmar’s website
http://tekmarcontrols.com/accessories/482.html
for details and a complete listing. The software drivers
allow easy integration of tekmarNet
® products to the home
automation system.
If you have a home automation system that is not listed
on the tekmar website, you may create your own software
drivers. This will require advanced programming skills.
The tekmarNet ® Home Automation protocol is available
on the tekmar website at:
http://tekmarcontrols.com/tha.html
Available Message Set:
NullMethod FanPercent
NetworkError TakingAddress
ReportingEnable DeviceInventory
OutdoorTemperature SetbackEnable
DeviceAttributes SetbackState
ModeSetting SetbackEvents
ActiveDemand FirmwareRevision
CurrentTemperature ProtocolVersion
HeatSetpoint DeviceType
CoolSetpoint DeviceVersion
SlabSetpoint DateTime
Thermostat Addressing
The 482 uses the following format to address each
thermostat: Port:Bus:Thermostat Device
Each thermostat is able to display the Bus and Thermostat
Device on the LCD display. This is documented as the
‘tekmarNet Address’ in the thermostat data brochure.
Port Number
The leading digit is the Port number. This determined by
the wiring connection that the thermostat is wired to on
the 482.
482 tN4 Bus 0 (terminals 3 & 4) = 0
482 tN4 Bus 1 (terminals 5 & 6) = 1
482 tN4 Bus 2 (terminals 7 & 8) = 2
482 tN4 Bus 3 (terminals 9 & 10) = 3
482 tN4 Bus 4 (terminals 11 & 12) = 4
Bus Number
The second digit is the thermostat bus number. The bus
number is pre-determined by the wiring of the thermostat
to a boiler or mixing reset control water temperature bus.
In the event that no reset control is installed, the bus
number is 0.
The 406 tN4 bus numbering is dependent on the
WaterTemp and the Zone settings when configuring the
control.
WaterTemp Zones Tank
Bus
Mix
Bus
Boiler
Bus
T — 1 —
T + M — 1 2 —
T + B — 1 — 2
T + MB Mix 1 * 3
T + MB Boil 1 2 **
* and ** thermostats on this bus are unable to communicate
to external systems.
Thermostat Device Number
The third and fourth digits indicate the thermostat
device number. The thermostat device number is a
two digit number that ranges from 01 to 24 and can be
determined from the thermostat address. To determine
the thermostat address, please consult the data brochure
for the appropriate thermostat.
Example 1
A thermostat with bus and thermostat device number of
b:01 is wired to a model 400 controller boiler bus and in
turn is wired to the 482 on port 0. This address is 0101.
Example 2
A thermostat with bus and thermostat device number of
b:24 is wired to a model 423 controller boiler bus and in
turn is wired to the 482 on port 0. This address is 0424.
Example 3
A group of thermostats are wired together to create a stand-
alone network. A thermostat with thermostat device number
15 is wired to the 482 on port 0. This address is 0015.
Control Bus Bus # Control Bus Bus #
274 Boiler 1 420 Boiler 1
275 Boiler 1 421 Mix 1
400 Boiler 1 422 Mix1 1
401 Boiler 1 422 Boiler 2
402 Mix 1 422 Mix2 2
402 Boiler 2 423 Bus1 1
403 Mix 1 423 Bus2 2
403 Boiler 2 423 Bus3 3
423 Boiler 4