User manual

MVI56-HART ♦ ControlLogix Platform Ladder Logic
HART Multi-drop Master Communication Module User Manual
ProSoft Technology, Inc. Page 51 of 171
October 13, 2011
3 Ladder Logic
In This Chapter
 Using the Sample Program ................................................................... 52
 Adding the Module to an Existing Project .............................................. 57
Ladder logic is required for the MVI56-HART module to work. 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 inRAx 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.