ProSoft Technology MVI46-DFNT - Manual (Page 44)

Configuring the MVI46-DFNT Module MVI46-DFNT ♦ SLC Platform
User Manual EtherNet/IP Client/Server Communication Module
Page 44 of 177 ProSoft Technology, Inc.
October 12, 2010
2.9 Ladder Logic
Ladder logic is required for application of the MVI46-DFNT 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.
2.9.1 Module Data
All data related to the MVI46-DFNT module is stored in user defined data files
and the module’s M1 file. Files should be defined for each data type for the
module. Additionally, a file should be defined to hold the module status data. The
status data should be copied from the M1 file and placed in the assigned status
file. Input (monitor) data should be copied from the user file to the M1 file and
output (command) data should be copied from the user files to the M1 file.
2.9.2 Adding the Module to an Existing Project
1 Add the MVI46-DFNT module to the project. Double-click on the I/O
Configuration option in the Controller Organization window.