Echelon LNS - Manual (Page 305)

LNS Programmer's Guide 291
minimum purchase requirements, with the Echelon Software License Generator product
separately available from Echelon. Contact your Echelon sales representative for details.
The end-user should also use the LNS Server License Transfer Utility to transfer the
LNS Device Credits and the license in order to move the LNS Server to another PC. The
LNS Device Credits and license are transferred together. It is not possible to move some
of the LNS Device Credits on a PC to another PC. You must move all of the LNS Device
Credits and the LNS Server license to the new PC.
The LNS Application Developer’s Kit, when registered, can reauthorize as many LNS
Device Credits on the development PC as you need for development purposes, without
requiring you to request more LNS Device Credits from Echelon. If you need more LNS
Device Credits for development purposes, run the LNS Server License Wizard, and follow
the prompts. A dialog will appear asking you if you would like to automatically authorize
yourself for more LNS Device Credits. Answer “Yes” and you will be granted more LNS
Device Credits. This auto-authorization is only available on a PC with a properly
registered LNS Application Developer’s Kit. Because this capability is recorded in the
same license required to use the LNS Server, transferring the license to another PC
would move this capability to the target PC.
Additional information about LNS Device Credits may be available on the LNS Home
Page at www.echelon.com/lns .
Demonstration Mode
When an LNS application is initialized, it starts running in Demonstration Mode. In
Demonstration Mode, each network is limited to a total of four devices, excluding the
LNS Server PC, and any Network Service Devices or routers installed on the network. As
long as the number of devices is within this limit, the LNS Object Server operates
normally in Demonstration Mode. You can add or remove devices, load applications, and
create connections between devices.
If you want to distribute demonstrations of your application, you should always
distribute them in Demonstration Mode. Check the software license agreement that
governs the use of this product to determine if you can distribute LNS Object Servers.
Standard Mode
The Standard Mode is the LNS Device Credit-based licensing model described earlier in
this chapter. When operating in Standard Mode, the number of devices operating on the
network must be less than or equal to the number of LNS Device Credits installed on the
LNS Server PC. As in Demonstration Mode, the number of devices excludes the LNS
Server PC, Network Service Devices, and routers.
In addition to the total number of LNS Device Credits, LNS Servers operating in
Standard Mode are also assigned a pool of deficit credits. Deficit credits are LNS Device
Credits beyond the number purchased that you can use. Typically, 500 deficit credits are
allocated to each network.
Networks whose LNS Object Server has a maximum deficit credit pool greater than zero
can continue to install devices, even when the regular supply of LNS Device Credits has
been exhausted. As soon as the application starts using deficit credits, the LNS Object
Server alerts the LNS application via the OnLicenseEvent event, starts a 14-day timer,