ProSoft Technology MVI56E-DNPNET - Manual (Page 101)

MVI56E-DNPNET ♦ ControlLogix Platform Contents
DNPNET Ethernet Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 101 of 140
February 13, 2015
The sequence counter field in the returned block is set to the last successfully processed
block 9959 from the ControlLogix processor. Compare this value to that sent by the
ControlLogix processor.
If the values match, the events can be removed from the ControlLogix processor. If the
values do not match, or the ControlLogix processor does not receive a 9959 block, the
ControlLogix processor must re-send the block.
Block 9968: Binary Input Event With CLX Time
Block identification code 9968 sends a set of binary input events with ControlLogix
processor time to the module.
Word Offset
in Block Data Field(s) Description
0 Block ID This field contains the value of 9968 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 30.
2 Sequence
Counter
This field is used to hold the sequence counter for each 9968
block transfer. This is used to synchronize and confirm receipt
of the block by the module.
(Begin Event #1)
3 Point_Number This is the data point in the DNPNET binary input database
represented by the event.
4 Class_ Override Bits 0 and 1 are used for class override values of 1, 2, or 3
5 Value Value of the point, 0 or 1, of bit 0 of this 16-bit word. All other
bits are ignored.
6 Reserved
7 to 10 CLX_Time 64-bit Time as number of microseconds since Jan 1st, 1970
(Next 29 Events)
13 to 22 Ten words of data for Event #2
… … …
233 to 242 Ten words of data for Event #30
(End of Event
Data)
243 to 247 Spare Not used
Up to 30 events can be passed from the ControlLogix processor to the module in each
block. To ensure that the block reached the module and was processed, the module will
send a response read block 9968 to the ControlLogix processor.
The following table describes the format of the block.