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ProSoft Technology MVI56-GEC User Manual

Page 71

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MVI56-GEC ♦ ControlLogix Platform

Reference

Generic ASCII Ethernet Communication Module

User Manual

ProSoft Technology, Inc.

Page 71 of 108

October 8, 2010

5.2

Functional Overview

5.2.1 General Concepts

The following discussion explains several concepts that are important for

understanding module operation.

Module Power Up
On power up the module begins performing the following logical functions:
1 Initialize hardware components

o

Initialize ControlLogix backplane driver

o

Test and clear all RAM

o

Initialize the serial communication ports

o

Initialize the TCP/IP stack and Ethernet interface

2 Initialize servers and clients
3 Set up the serial communication interface for the debug/configuration port
After the module has received the configuration, the module will begin receiving

and transmitting messages with clients and servers on the Ethernet network.

Main Logic Loop
Upon completing the power up configuration process, the module enters an

infinite loop that performs the functions shown in the following diagram.