Echelon SmartServer 2.2 - Manual (Page 99)

100 Configuring and Managing the SmartServer
Maximum Number
of Simultaneous
Receive
Transactions Enter the maximum number of receive transactions that the RNI
application can receive at one time. This value may range from 1 to
32,768. The default value is 16. You can increase this value if you
observe buffer overflows. You can decrease this value if you observe that
the SmartServer’s memory is low.
A receive transaction entry is required for any incoming message which
uses either repeating or acknowledged messaging service (a receive
transaction is not required for messages using unacknowledged service).
A receive transaction entry is also required for each unique source
address/destination address/priority attribute.
Each receive transaction entry contains a current transaction number. A
message is considered to be a duplicate if its source address, destination
address, and priority attribute vector into an existing receive transaction
and the message’s transaction number matches the entry’s transaction
number.
Receive transaction entries are freed after the receive timer expires. The
receive timer duration is determined by the destination device and varies
as a function of the message addressing mode. For group addressed
messages, the receive timer is determined by the address table. For
Neuron ID addressed messages, the receive timer is fixed at eight seconds.
For other addressing modes, the non-group receive timer in the
configuration data structure is used.
4. Click Submit to save your changes.
SmartServer RNI Limits
The capabilities of the RNI on the SmartServer depend largely on the software running on the host
computer. When configured as an RNI, the SmartServer has the following limits:

Up to 32,768 address table entries.

Up to 256 simultaneous outgoing transactions.

Up to 32,768 simultaneous incoming trasactions.

Up to 1,024 network variable aliases.

Up to 256 groups, with up to 15 used for incoming messages.

Up to 4,096 dynamic network variables.

Output messages can be sent to up to 256 different destination addresses within each 24-second
interval. Multiple messages can be sent to each of those destination addresses within the interval.

One RNI link at a time.
See Introduction to L ON W ORKS

Platform for more information about these limits. This guide is
available on the Echelon Web site at www.echelon.com/docs .
Switching Between the SmartServer RNI and a Local Network Interface
You can switch the network interface used by an OpenLNS, LNS, or OpenLDV application to
communicate with a L
ON W ORKS network. You can switch to either the RNI configured on the
SmartServer or a local network interface such as a PCLTA-20 or 21, PCLTA-10, PCC-10, or U-10.
If your SmartServer is configured as an RNI and want to switch to a local L ON W ORKS network
interface, but you want to leave the SmartServer attached to the network, you must disable the RNI