3ladder logic – ProSoft Technology MVI56-103M User Manual
Page 55

MVI56-103M ♦ ControlLogix Platform
Ladder Logic
IEC 60870-5-103 Master Communication Module
User Manual
ProSoft Technology, Inc.
Page 55 of 152
February 22, 2013
3
Ladder Logic
In This Chapter
Module Data .......................................................................................... 56
Command Control Data Object ............................................................. 60
Event Message Data Object .................................................................. 62
Adding the Module to an Existing Project .............................................. 63
Ladder logic is required for application of the MVI56-103M module. Tasks that
must be handled by the ladder logic are module data transfer, special block
handling, and status data receipt. Additionally, a power-up handler may be
needed to handle the initialization of the module’s data and to clear any
processor fault conditions.
The sample ladder logic, on the ProSoft Solutions CD-ROM, is extensively
commented, to provide information on the purpose and function of each rung. For
most applications, the sample ladder will work without modification.