3ladder logic – ProSoft Technology MVI69-DFNT User Manual

Page 43

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MVI69-DFNT ♦ CompactLogix or MicroLogix Platform

Ladder Logic

EtherNet/IP Client/Server Communication Module

User Manual

ProSoft Technology, Inc.

Page 43 of 167

May 14, 2014

3

Ladder Logic

In This Chapter

Module Data .......................................................................................... 43

Using the RSLogix 5000 v16 Add-On Instruction .................................. 44

Adding the Module to an Existing CompactLogix Project ...................... 51

Adding the Module to an Existing MicroLogix Project ............................ 55

Ladder logic is required for the MVI69-DFNT 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 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.
For applications using RSLogix™ 5000, versions 16 and later, some sample
ladder files include Add-On Instruction (AOI) samples and rung import files.
These AOI samples compress all logic needed to use the module into an easily-
managed, single logic rung, which can be used as the basis for creating your
own custom application or can be quickly added to an existing application.

3.1

Module Data

All data related to the MVI69-DFNT used in Add-On Instruction (AOI) logic are
stored in Controller Tag variables based on User-defined Data Type (UDT)
structures. See the sample AOI program for details.

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