ProSoft Technology MVI56-104S - Manual (Page 71)

Ladder Logic MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 71 of 188
November 18, 2009
Here is the structure of each GMT time-stamped event record in the block.
Word Offset in Event
Record Data Field(s) Description
0 DB Index This is the index for the point in the module's database.
This corresponds to the order of point definition for the
module data types. This is not the point address for the
event. For example, to refer to the third configured point,
enter a value of 2 (first event is 0).
1 ASDU This is the ASDU data type for the event message. Valid
entries for this field are as follows:
1=single-point
3=double-point
5=step
9=normalized
11=scaled
13 = short floating point
15=integrated total
2 Qualifier This is the qualifier code for the event message. This
parameter is only used for ASDU types 5, 9, 11 and 15.
Refer to the IEC Protocol Specification for a full listing of
valid qualifier codes for one of these ASDU types.
3 Year This field contains the four-digit year for this event.
4 Month This field contains the month value for the event. Valid
Values: 1 to 12
5 Day This field contains the day value for the event. Valid
Values: 1 to 31
6 Hour This field contains the hour value for the event. Valid
Values: 0 to 23
7 Minute This field contains the minute value for the event. Valid
Values: 0 to 59
8 Seconds and
Milliseconds
This field contains the seconds and milliseconds value
for the event. Valid Values: 0 to 59,999 (59 seconds and
999 milliseconds).
9 through 14 Data These words contain the data for the event. For single-
and double-point, step, and measured value events, the
first word is used. For integrated total events, the first
two words are used.