Echelon ISI User Manual

Page 112

ISI Programmer’s Guide

110

Byte offset

Data Type

Field Name

Note

N+5

unsigned

Variant

Variant number for the

offered connection. Variants

may be defined for any
device category and/or

functional profile/member

number pair. Variants
allow different

interpretations of the
offered data, based on a

variant value. Set to zero

unless otherwise known.
Values 1 – 127 are standard

variant values specified by

the

ISI Protocol

Specification

and by ISI

profiles published by

ARK

International.

Values 128 – 254 are

available for use by

manufacturer-specific
connections.
Value 255 is reserved.

N+6

unsigned : 1

Extended.

Acknowledged

Normally cleared. For

regular CSMO, CSMA, and
CSMR messages, this field

is always zero. You must

specify isiFlagExtended
when starting the ISI

engine to use this field.
See text for special
considerations.

N+6

unsigned : 1

Extended.Poll

Normally cleared. For
regular CSMO, CSMA, and

CSMR messages, this field
is always zero. You must

specify the isiFlagExtended

flag when starting the ISI
engine to use this field.
See text for special

considerations.