User manual

IEC61131 User and Reference Manual
April 22, 2008
555
Event Buffers shows the number of events in each type of event buffer and the allocated buffer size.
The buffers shown are for binary inputs, 16-bit analog inputs, 32-bit analog inputs, Floating point
analog inputs, 16-bit counter inputs, and 32-bit counter inputs, and Class 1, 2, and 3 events.
The Event Buffers window displays the number of events in each type of event buffer and the
allocated buffer size for the selected remote station. The event buffers displayed are:
 Binary In (binary inputs)
 AIN-16 (16-bit analog inputs)
 AIN-32 (32-bit analog inputs)
 AIN-Float (floating point analog inputs)
 Counter-16 (16-bit counter inputs)
 Counter-32 (32-bit counter inputs)
 Class 1 (class 1 events)
 Class 2 (class 2 events)
 Class 3 (class 3 events)
Note: Due to a limitation of the DNP3 protocol, an Unsolicited message from an outstation
is not capable of including information stating which data class generated the
message. As a result, all Unsolicited events when received by the master will be
counted as Class 1 events. Events which are polled by the master, however, do
contain class information and will be counted in the Event Buffer for the appropriate
class.