ProSoft Technology MVI69-DNPSNET - Manual (Page 75)

Reference MVI69-DNPSNET ♦ CompactLogix or MicroLogix Platform
Distributed Network Protocol Interface Module
ProSoft Technology, Inc. Page 75 of 119
November 3, 2008
Block 9959 - Processor Analog Input Event
If the processor sends a block 9959, the module will place the analog input event
data in the block into the event buffer and alter the data values for the points in
the DNP analog input database. The format for the event message is shown in
the following table.
Block Format for Write
Word Offset in Block Data Field(s) Description
0 Block ID This field contains the value of 9959 identifying
the event block to the module.
1 Event Count This field contains the number of events
contained in the block. Valid values for this field
are 1 to 9.
2 Sequence Counter This field holds the sequence counter for each
9959 block transfer. This synchronizes and
confirms receipt of the block by the module.
3 DNP Analog Input
Data point This is the data point in the DNP analog input
database represented by the event.
4 Analog Input Value This is the new analog input value represented in
the event.
5 Month/Day Formatted: bits 0 to 4 = Day, bits 8 to 11 =
Month. All other bits are ignored.
6 Hour/Minute Formatted: bits 0 to 5 = Minutes, bits 8 to 12 =
Hour. All other bits are ignored.
7 Sec/Millisecond Formatted: bits 0 to 9 = Milliseconds, bits 10 to
15 = Seconds.
8 Year Four digit year value for event.
9 to 14 Six words of data for Event #2.
15 to 20 Six words of data for Event #3.
21 to 26 Six words of data for Event #4.
27 to 32 Six words of data for Event #5.
33 to 38 Six words of data for Event #6.
39 to 44 Six words of data for Event #7.
45 to 50 Six words of data for Event #8.
51 to 56 Six words of data for Event #9.
57 to n Spare Not Used
To ensure the receipt of this block of information, the module returns a block
9959 with the sequence counter set to the value of the last successful block 9959
received.
Block Format for Read
Word Offset in Block Data Field(s) Description
0 Block ID Identification code for block set to 9959.
1 Block ID Block identification code for request from PLC by
the module.
2 Event Count This field contains the number of events
processed by the module.