ProSoft Technology MVI69-103M - Manual (Page 43)

Ladder Logic MVI69-103M ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-103 Master Communication Module
ProSoft Technology, Inc. Page 43 of 131
November 3, 2008
When the command bit (MVI69103M.CONTROL.UserCommand.Activate) is set,
the module will build the block 9902 in the output image. The module will receive
the new block and place the commands into the command queue for execution.
3.1.6 Event Message Data Object (MVI69103M_Event)
The module can be configured to pass event messages received from the
controlled devices to the processor. Refer to the Pass-Through Events (page 24)
parameter for further information about this feature. The module sends this
information to the processor in read blocks with identification codes of 9903. The
example ladder logic has a data structure that conforms to the data structure sent
for each element by the module. The following figure displays the object:
Data Type Description
Session Session values
Sector Sector values
ASDU_Type ASDU type for event message
PointIndex Point index
Function Function index
FaultNumber Fault Number for event (ASDU type 2 and 4 only)
Milliseconds Milliseconds
Seconds Seconds
Minutes Minutes
Hour Hour
Invalid Valid time flag
DST Daylight savings time flag
RelativeTime Relative Time (ASDU type 2 and 4 only)
Value Value for event received (may want to set float type for ASDU 4)