ProSoft Technology MVI56-103M - Manual (Page 97)

MVI56-103M ♦ ControlLogix Platform Reference
IEC 60870-5-103 Master Communication Module User Manual
ProSoft Technology, Inc. Page 97 of 152
February 22, 2013
5.2 General Concepts
The following discussion explains several concepts that are important for
understanding module operation.
5.2.1 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
2 Read configuration for module from IEC103M.CFG file on Compact Flash
Disk
3 Initialize the databases and ports
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 serial networks.
5.2.2 Main Logic Loop
Upon completing the power up configuration process, the module enters an
infinite loop that performs the following functions: