Ladder Logic
MVI56-DEM
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ControlLogix Platform
Honeywell DE Communication Module
ProSoft Technology, Inc.
Page 27 of 80
March 6, 2008
3 Ladder
Logic
Ladder logic is required for application of the MVI56-DEM 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.
