ProSoft Technology MVI71-DFNT - Manual (Page 69)

MVI71-DFNT ♦ PLC 5 Reference
EtherNet/IP Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 69 of 175
February 3, 2011
5.2 Functional Overview
5.2.1 General Concepts
The following discussion explains several concepts that are important for
understanding module operation.
On power up the module begins performing the following logical functions:
Module Power Up
1 Initialize hardware components
2 Initialize PLC backplane driver
o Test and clear all RAM
o Initialize the serial communication ports
o Read configuration for module from DFNT.CFG file on Compact Flash
Disk
3 Initialize Module Register space
4 Enable Server Drivers
5 Enable Client Driver
6 Initialize all serial communication ports
After the module receives the configuration, the module begins communicating
with other nodes on the network, depending on the configuration.
Upon completing the power-up configuration process, the module enters an
infinite loop that performs the functions shown in the following diagram.
Main Logic Loop