Echelon ISI - Manual (Page 107)

105 ISI Programmer’s Guide
Byte offset Data Type Field Name Note
N unsigned [5] UniqueId A unique identifier for the
connection host, based on
the host’s Neuron ID.
N+5 unsigned long SerialNumber Connection host-allocated
serial number.
The byte offset N is 1 for the IsiCid or IsiConnectionHeader structure used with
ISI message types, and is 0 (zero) when used with the IsiConnection structure.
IsiConnection Structure
Represents a row in the connection table that is read with IsiGetConnection()
and written using IsiSetConnection().
Data Type Field
Name
Note
IsiConnectionHeader Header See IsiConnectionHeader
unsigned Host Local assembly number that acts as
host for this connection, or
ISI_NO_ASSEMBLY if none.
unsigned Member Local assembly number that is member
to this connection, or
ISI_NO_ASSEMBLY if none.
unsigned : 2 State Use IsiConnectionState enumerated
values
unsigned : 1 Extend For pending enrollment: this is a
pending connection extension.
unsigned : 1 HaveCsme For pending enrollment hosts: at least
one member has enrolled.
unsigned : 4 Width Width, as governed by this connection
table entry. A single connection table
entry can govern up to 4 selectors;
connections from compound assemblies
with a larger width are split into
multiple connection table entries.
ConnDesc structure Desc.Bf For—sometimes more efficient—access
via 8 bit cardinals, use the
Desc.OffsetAuto construct; see isi.h for
definition details.
IsiConnectionHeader Structure
Contains the connection identifier (CID) and selector value for a connection-
related ISI message.