Echelon LonMaker User Manual
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Appendix G – Glossary
Synchronized
The state of a LonMaker network design when a LonMaker drawing and the physical devices on the
network match the LNS network database.
Target
The destination of a connection specified by a device handle and network variable (or message tag)
index. Each connection is defined in terms of a hub and a one or more targets connected to the hub.
For network variable connections, the hub may only be a single input or output network variable in the
connection. For example, if the hub is an output network variable, all the targets in the connection
must be input network variables.
Terminator
Provides electrical termination for twisted pair channels. Properly placed terminators prevent signal
reflections.
Test
A management command used to ensure that a device or functional block is operating and is
configured correctly.
TP/FT-10
The free topology twisted pair L
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ORKS
channel type, 78Kbps bit rate.
TP/XF-1250
A bus twisted pair L
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W
ORKS
channel type, 1.25Mbps bit rate.
TP/XF-78
A bus twisted pair L
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W
ORKS
channel type, 78Kbps bit rate.
Transceiver
A device that is both a transmitter and a receiver for a communications channel. In a L
ON
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network, it is the component that physically connects a Neuron Chip to its channel. The transceiver
implements layer 1 of the LonTalk protocol.
Unacknowledged Service
A service of the LonTalk protocol sends a message once to the addressee(s). There is no
acknowledgement from the addressee(s) that the message has been delivered.
Unattached
The state of the LonMaker tool when it is not connected to a L
ON
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ORKS
network.
Unconfigured
A device state where the device has an application image, but no network image. The device must be
configured before it can operate on the network.
User-defined Configuration Property Type (UCPT)
A non-standard data structure used for configuration of the application program in a L
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ARK
device.
UCPTs should be used only when there is no appropriate standard configuration property type (SCPT)
defined. L
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M
ARK
-certified devices must have UCPTs documented in resource files according to a
standard format, in order to allow the devices to be configured without the need for proprietary
configuration tools.
User-defined Network Variable Type (UNVT)
A non-standard network variable type defined by the manufacturer of a device. UNVTs should be used
only when there is no appropriate standard network variable type (SNVT) defined. L
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ARK
-certified