User manual

IEC61131 User and Reference Manual
April 22, 2008
473
6. Click on the Master Poll tree node from the DNP Configuration panel.
a. Set the Base Poll Interval to 1s.
b. Ensure Mimic Mode is Disabled.
c. Click on the Add button within the Master Poll panel to create a new master poll schedule.
d. In the Add/Edit Master Poll dialog, do the following:
i. Set Station to 10
ii. Under Class 0 Polling group box, set the Interval to 3600 base poll intervals (1 hour).
iii. Leave the Poll Offset at the default of 0 base poll intervals.
TIP: Static (Class 0) comprise current values of all DNP3 points in the I/O
database. Due to the shear size of this data, it is recommended to reduce the
frequency of static polls. Urgent data will be updated at the master via Class polls
or unsolicited messages.
iv. Under Class 1 Polling group box, set the Interval to 10 base poll intervals (10 seconds).
v. Set the Poll Offset to 1 base poll intervals.
vi. Leave the Limit Maximum Events checkbox unchecked.
vii. Under Class 2 Polling group box, set the Interval to 600 base poll intervals (10
minutes).
viii. Set the Poll Offset to 2 base poll intervals.
ix. Leave the Limit Maximum Events checkbox unchecked.
x. Under the Time Synchronization group box, set the Interval to 21600 base poll
intervals (6 hours).
xi. Set the Poll Offset to 3 base poll intervals.
TIP: Polling intervals on Master request for time synchronization are configured in this
dialog. If possible, set this to a daily frequency.
A small base poll interval limits that maximum poll interval to 32767 seconds. Daily polls
(every 86400 seconds) are, therefore, not possible when the base poll interval is set for 1
second. .
xii. Under Unsolicited Response group box, leave all fields at default. The completed dialog
should look like this: