Echelon ISI - Manual (Page 104)

ISI Programmer’s Guide 102
You can upgrade a network from a self-installed network to a managed network.
You may do this to add non-ISI devices to an ISI network, to extend the network
beyond the ISI limits, or to introduce managed monitoring and control tools to
the network.
You can use the LonMaker Integration Tool or another application that
implements LNS recovery to automatically analyze an ISI network and create a
LNS database reflecting the present network configuration. The LonMaker tool
will also automatically create a LonMaker drawing that shows all the channels,
devices, functional blocks, and connections in the ISI network. You can then use
the LonMaker tool to further enhance and extend the network.
To transition an ISI network to a managed network using the LonMaker tool,
follow these steps:
1. Ensure all devices in the network are powered on.
2. Recover the network as described in Recovering a Network in the
LonMaker User’s Guide . One of the steps of the recovery procedure is to
optionally create device templates based on device interface (XIF) files for
your devices. This step is typically optional, but is required for any
devices created with the disable_snvt_si compiler directive. These
devices do not provide a network accessible definition of their interface,
and can only be recovered if an XIF file is available. For all devices, an
XIF file may have additional information that is not reported by the
device itself, and may therefore improve recovery.
3. Open the recovered LonMaker network and verify that all devices were
correctly discovered.
4. Change the network to the OnNet management mode.
5. Resynchronize the devices in the network to the LNS database as
described in Resynchronizing the Drawing, Database, and Network in the
LonMaker User’s Guide . This will update the SCPTnwrkCnfg
configuration property that is implemented in all ISI devices to disable
self-installation and enable configuration by the LonMaker tool and other
LNS applications. This will also correct network configuration errors
identified during recovery.
You can read the SCPTnwrkCnfg configuration property in an ISI device to
determine if the device is currently in the self-installed or managed state. If the
SCPTnwrkCnfg CP is set to CFG_LOCAL, then the device is currently self-
installed. If it is set to CFG_EXTERNAL, then the device is in the managed
state.
For more considerations, and example code, see Implementing a SCPTnwrkCnfg
CP .
You can also transition a device from a managed network back to a self-installed
network by deinstalling it as described in Deinstalling a Device in Chapter 2.