Echelon i.LON 1000, User Manual, Page: 78 / 126

10-6 Advanced Usage of the
<iLonWeb>
HTML Tag
Attribute Description
:298.RY:3.TX:768.TY:95.SZ:2> </iLonWeb>
Alternatively, AS:GR specifies group addressing. If specified, the GR field
must specify the group ID, and the ME field must specify the number of
members in the group, for example, if you want to send an update to group 3,
which contains 4 members:
<iLonWeb FUNC=ShowValue
SYMBOL=NVE_
AS:GR.DM:0.GR:3.ME:4 .ST:UR.PR:0.AU:0.SY:0.NI:6.NS
:298.RY:3.TX:768.TY:95.SZ:2> </iLonWeb>
AS:BR specifies broadcast addressing. If specified, the SU field must specify
the subnet ID for subnet broadcast, or must be 0 to define domain broadcast.
For example, to broadcast to all devices on subnet 2:
<iLonWeb FUNC=ShowValue
SYMBOL=NVE_
AS:BR.DM:0.SU:2 .ST:UR.PR:0.AU:0.SY:0.NI:6.NS:298.
RY:3.TX:768.TY:95.SZ:2> </iLonWeb>
ST:e Service Type describes the message delivery service to be used when updating
a remote input network variable. Values can be: UA for unacknowledged
service, UR for unacknowledged-repeat, or AK for acknowledged.
UR - The update message is sent several times, without any acknowledgment
message from the far side. The number of repetitions is determined by the
"Retry Count" attribute, and the repeated messages are separated by at least
"TX Timer" milliseconds.
UA - The update message is sent once, without any acknowledgement from
the far side.
AK - The update message is sent out and waits for an acknowledgement from
the far side for "TX Timer" milliseconds. If no acknowledgement is received
for the TX Timer period, the update message is sent again, and the wait for
acknowledgement begins again. This is repeated "Retry Count" times.
PR:b The priority attribute for messages to this network variable. This Boolean
field is 0 for no priority and 1 for priority. If Priority is 1, network variable
update and fetch messages will be sent as L
ON
W
ORKS
priority messages.
AU:b The authentication attribute for messages to this network variable. This
Boolean field is 0 for no authentication and 1 for authentication. If
Authentication is 1, network variable update and fetch messages will be sent
with the L
ON
W
ORKS
authentication protocol.
SY:b The synchronous attribute for this network variable. This Boolean field is 1
for synchronous or 0 for non-synchronous.
NI:x The index of the network variable in decimal within the application device.
NS:x The network variable Selector, given in hex, is assigned by the L
ON
W
ORKS
binder to logically connect network variables on the network, causing network
variable value updates to be directed to the assigned targets. A selector value
of FFFF in this field signifies that the
i. LON 1000 is polling some device's
output network variable.
RY:x Specifies the number of retries to use. See the above "Service Type" attribute
for a description of how this attribute affects updates of remote input network