beautypg.com

3 ladder logic – ProSoft Technology MVI71-DFNT User Manual

Page 43

background image

MVI71-DFNT ♦ PLC 5

Ladder Logic

EtherNet/IP Client/Server Communication Module

User Manual

ProSoft Technology, Inc.

Page 43 of 175

February 3, 2011

3 Ladder Logic

Ladder logic is required for application of the MVI71-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.