ProSoft Technology MVI56E-DNPNET - Manual (Page 92)

Contents MVI56E-DNPNET ♦ ControlLogix Platform
User Manual DNPNET Ethernet Client/Server Communication Module
Page 92 of 140 ProSoft Technology, Inc.
February 13, 2015
When the backplane task in the modules recognizes data in this queue, it will form 9903
blocks to transfer the data to the processor. Ladder logic extracts the event data from the
9903 block and places it in controller tags.
Word Offset
in Block Data Field(s) Description
0 Reserved
1 Block ID This is the next block requested by the module.
2 Event Count This field contains the number of events present in the block.
Values of 1 to 15 are valid.
3 to 18 Event 1 Event message
19 to 34 Event 2 Event message
35 to 50 Event 3 Event message
51 to 66 Event 4 Event message
67 to 82 Event 5 Event message
83 to 98 Event 6 Event message
99 to 114 Event 7 Event message
115 to130 Event 8 Event message
131 to 146 Event 9 Event message
147 to 162 Event 10 Event message
163 to 178 Event 11 Event message
179 to 194 Event 12 Event message
195 to 210 Event 13 Event message
211 to 226 Event 14 Event message
227 to 242 Event 15 Event message
243 Event Overflow 1 if module's 1000 count event buffer was full when this block
was packed
244 Events Queued Number of events still queued in module.
245 to 248 Spare Not used
249 Block ID This field contains the block identification code of 9903 for the
block.
Up to 15 events are passed to the processor in each block. The format of each event
message in the block is shown in the following table.
Word Offset Definitions Description
0 Device Index This field contains the module's device index for the IED the
message was received from (0 to 39).
1 IED Address This field contains the IED database index for the point. If set
to -1, then not in database.
2 DNPNET Address This field contains the DNPNET database index for the point. If
set to -1, then not in database.
3 Server Address This field contains the remote server address for the IED unit
from which the message was received.