Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual User Manual
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Rockwell Automation Publication 1766-UM001H-EN-P - May 2014
Appendix F MicroLogix 1400 Distributed Network Protocol (DNP3)
The maximum number of the Events that can be logged is 6013, regardless of the
Event data type. With Series B controllers, a Data Set event can consume multiple
numbers of the event buffers.
If the number of the generated events reaches this value, the MicroLogix 1400
sets IIN2.3 [EVENT_BUFFER_OVERFLOW]. Further events are not logged
until the logged events are reported to DNP3 Master and the buffer is available.
The elements CS0:67 or CS2:67 in the Communication status file show how
many events are logged to the event buffer. The logged events are not removed
until they are reported to DNP3 Master successfully. Logged event can also be
cleared when one of the following events occur:
• New OS firmware upgrade
• New user program download.
The example below shows how to generate events for a Binary Input Object and a
16-bit Analog Input Object. In the DNP3 Slave configuration, Binary Input
Object Data File Number was configured to 10 and its Configuration File
Number was configured to 30. 16-bit Analog Input Object Data File Number
was configured to 14 and its Configuration File Number was configured to 36.