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T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES
7 63-4365
Network Variables
—A class of variables defined in
Neuron C that allows communication over the LonWorks®
network to other nodes on the network. An output network
variable in one node can be bound to corresponding input
network variable(s) in other node(s). Changing the value of
the output network variable in one node causes the new
value to be automatically communicated to the bound input
network variable(s) in other node(s). When an input
network variable is updated, an nv_update_occurs event is
posted at the receiving node(s) so that the application
program can take action based on the change. A network
management node that explicitly reads and/or writes the
network variable can also poll network variables. Network
variables can contain one data field (one or two bytes) or
multiple data fields (a structure).
Node
—A device implementing layers one through six of
the LonTalk® protocol including a Neuron® Chip,
transceiver, memory, and support hardware.
Notebook PC
—Portable personal computer.
Optional Mechanism/Object/Network Variables
—
Optional mechanisms and variables that shall be
implemented on an as-needed basis. However, a different
mechanism or network variable cannot be implemented if
an existing optional mechanism or network variable can
perform the same function.
Programmable Controller
—A controller that has a
variable number of control loops of different types and is
user-programmed to execute an application. The user can
select the number and type of control loops. The user also
has the capability of generating new types of control loops.
Recovery Mode or Recovery Period
—The time in
unoccupied periods when the temperature control is
adjusting the control setpoint so that the space
temperature reaches the occupied setpoint when the
schedule change occurs.
RIO
—Excel 10 Remote Input/Output device.
RTC
—Real Time Clock.
Schedule
—The structure that defines the occupancy
states, setpoints and the time of the changes between
these states.
SGPU
—Significant Event Notification and Guaranteed
Periodic Update.
SGPUC
—Significant Event Notification and Guaranteed
Periodic Update with Change Field.
SLTA
—Serial LonTalk® Adapter. Adapts the transformer
coupled LonTalk® messages to the RS-232 Serial Port.
SNVT
—Standard Network Variable Type.
SCPT
—Standard Configuration Parameter Type.
CONSTRUCTION
The T7300F Thermostat has a keypad for setting system
parameters, a corresponding LCD display and a flip-down
keypad cover. The T7300F Thermostat mounts on the
Q7300H Subbase.
The Q7300H Communicating Subbase includes
LonWorks® Bus terminals and a jack for temporary
network connections to a personal computer. A service pin
push button provides service messaging to physically
locate the device on the LonWorks® network. The
subbase mounts horizontally on the wall or on a
2 in. x 4 in. junction box.
Fig. 3 shows T7300F/Q7300H dimensions.