ProSoft Technology MVI71-GEC - Manual (Page 48)

Reference MVI71-GEC ♦ PLC 5 Platform
User Manual Generic ASCII Ethernet Communication Module
Page 48 of 86 ProSoft Technology, Inc.
May 11, 2011
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 PLC backplane driver
o
Test and clear all RAM
o
Initialize the serial communication ports
2 Read configuration for module from GEC.CFG file on Compact Flash Disk
3 Initialize servers
4 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 devices 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.