Echelon OpenLNS - Manual (Page 147)

OpenLNS Programmer's Reference 110
Properties
The Channel object contains the following properties :
• AltPathType
• AppDevices
• BitmapFilePath
• ClassId
• Delay
• Description
• Extensions
• Handle
• IconFilePath
• MaxPriority
• Name
• Parent
• RouterDevices
• TransceiverId
AltPathType
Summary Specifies whether the channel requires an alternate path so
that it can broadcast on separate frequencies. In some cases,
the use of alternate frequencies improves communication on
a channel.
Some transceivers broadcast on two frequencies for greater
signal reliability (for example, the PLT-22). This property
allows the user to explicitly inform LNS that a channel has
(or does not have) an alternate frequency.
Availability Local, full, and lightweight clients.
Syntax altPathType = channelObject.AltPathType
Element Description
channObject The Channel object to be acted on.
altPathType The alternate path type. The
enumerated values for this property,
which are contained in the
ConstChannelAltPathType constant, are
as follows:
0 lcaChannelDefaulAltPathType
Channels with their
TransceiverId
property set to lcaXcvrPL_20A (15),
lcaXcvrPL_20A_AltClockRate (14),
lcaXcvrPL_20C (16), or
lcaXcvrPL_20N (17), will require the
alternate path, other channels will not.
The TransceiverType property does not
distinguish between PLT-20, PLT-21
and PLT-22. This is the default and the
recommended setting.