Echelon i.LON SmartServer Technical Information Page 84

  • Download
  • Add to my manuals
  • Print
  • Page
    / 443
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 83
i.LON SmartServer 2.0 Programmer’s Reference
6-6
Property Description
point every five seconds to ensure that each application gets
a current value for each poll.
It is important to note this as you set poll rates for various
applications, as you may end up causing more polls than is
efficient on your network. For example, if an Alarm
Generator is polling a data point every 9 seconds and a Data
Logger is polling a data point every 10 seconds, the Data
Server would have to poll the data point every second to
ensure that each application polls for a current value. This
may create a significant amount of undesired traffic.
<UCPTalarm2Description>
Optional. The description field of the SNVT_alarm2 data
point selected for the Alarm Generator. This data point can
be selected by setting the SNVT_alarm_2 output data point
property.
The description of the data point could include the value
that increased and caused the alarm, an alarm or error code
defined by the manufacturer, or the alarm limit. This can be
a maximum of 22 characters long, and will be inserted in the
description field of the SNVT_alarm2 data point each time
an alarm is generated.
<UCPTcompFunction>
Specifies the function that the Alarm Generator will use to
compare the values of the input data point and the compare
data point. For descriptions of the comparison functions
you can use, see
Comparison Functions.
<UCPTalarmSetTime>
Specifies the time period an alarm condition must exist
before the Alarm Generator will consider it a valid alarm
and generate an alarm. The time period must be entered in
seconds, as a double precision floating point value.
<UCPTalarmClrTime>
Specifies the time period to wait after the condition that
caused an alarm has returned to normal status before the
alarm will be cleared. The time period must be entered in
seconds, as a double precision floating point value.
<UCPTlowLimit1Offset>
<UCPTlowLimit2Offset>
<UCPThighLimit1Offset>
<UCPThighLimit2Offset>
Enter a scalar value for each of these properties. These
values will be used as the offset limits for the Alarm
Generator when the <UCPTcompFunction> property is set
to FN_LIMIT. In this case, alarms will be generated when
any of the following conditions are true:
Value of Input Data Point> Value of Compare Data
Point + highLimit1Offset
Value of Input Data Point > Value of Compare Data
Point +highLimit2Offset
Value of Input Data Point < Value of Compare Data
Point – lowLimit1Offset
Value of Input Data Point < Value of Compare Data
Page view 83
1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 442 443

Comments to this Manuals

No comments