Echelon SmartServer 2.2 Bedienungsanleitung PDF herunterladen (Seite 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 LONWORKS



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 LONWORKS 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 LONWORKS network

interface, but you want to leave the SmartServer attached to the network, you must disable the RNI

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