4ladder logic – ProSoft Technology MVI56E-MCMR User Manual
Page 117

MVI56E-MCMR ♦ ControlLogix Platform
Ladder Logic
Modbus Communication Module with Reduced Data Block
User Manual
ProSoft Technology, Inc.
Page 117 of 225
May 13, 2014
4
Ladder Logic
In This Chapter
MVI56E-MCMR User Defined Data Types .......................................... 118
Ladder logic is required for application of the MVI56E-MCMR 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 DVD, is extensively
commented, to provide information on the purpose and function of each rung. For
most applications, the sample ladder will work without modification.