Echelon OpenLNS - Manual (Page 1037)

OpenLNS Programmer's Reference 1000
network variable may be received by connections and devices that it is not intended to.
LNS attempts to avoid this problem by the appropriate allocation of network variable
selectors. However, some connection intersections make the use of broadcast addressing
impossible, and so you may need to avoid using broadcast addressing in some situations.
One solution for this problem is to use aliases for unicast connections, instead of using
multicast connections. See the Optimizing Connection Resources section in Chapter 8 of
the OpenLNS Programmer’s Guides for more information on this.
lcaErrConnExistingBcastCausesNvLeak
25
An attempt was made to create a connection (of any type), but a detected network
variable leak was caused by the use of broadcast addressing on another device. A
network variable leak means that update messages for the network variable may be
received by connections and devices that it is not intended to. LNS attempts to avoid this
problem by the appropriate allocation of network variable selectors. However, some
connection intersections are not possible when broadcast addressing is in use. One
solution for this problem is to use aliases for unicast connections, instead of using
multicast connections. See the Optimizing Connection Resources section in Chapter 8 of
the OpenLNS Programmer’s Guides for more information on this.
lcaErrConnBcastCantAck
26
Acknowledged services cannot be used with broadcast addressing.
Note that subnet broadcast is not allowed with ACKD service, and domain broadcast is
not allowed with either ACKD or UNACKD_RPT services.
lcaErrConnDomainBcastMustUseUnackd
27
Domain broadcast addressing is restricted to the unacknowledged service.
Please note that UNACKD_RPT service is not allowed with Domain broadcast.
lcaErrConnConflictingPrioritySettings
28
The connection descriptions for intersecting connections have incompatible settings for
priority. The priority option is available only for network variables. If an output network
variable that is not declared as polled is a member of multiple connections, the priority
settings for all of those connections must be identical. If a polling input network variable
is a member of multiple connections, the priority settings for those connections must also
be identical.
lcaErrConnConflictingAuthSettings
29
The authentication settings for the network variables in a connection are incompatible.
If a target network variable (an input network variable, or polled output network
variable) in a connection is using authenticated messaging, then all network variables
involved in the connection must also use authenticated messaging.
lcaErrConnConflictingSvctypeSettings
30
The connection descriptions for intersecting connections have incompatible settings for
service type. If an output network variable that is not declared as polled is a member of
multiple connections, the service type settings for all of those connections must be
identical.
lcaErrConnConflictingTimerSettings
31
The connection descriptions for intersecting connections have incompatible settings for
one of the timer values. If an output network variable that is not declared as polled is a
member of multiple connections, the timer settings for all of those connections must be