ProSoft Technology MVI56-104S - Manual (Page 145)

Reference MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 145 of 188
November 18, 2009
5.3 General Concepts
The following discussion explains several concepts that are important for
understanding MVI56-104S module operation.
5.3.1 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 on Compact Flash Disk
3 Initialize module register space
4 Enable Server Driver for TCP/IP stack.
After the module has received the configuration, the module will begin receiving
and transmitting messages with devices on the serial networks.
5.3.2 ControlLogix Processor Not in Run
Whenever the module detects that the processor has gone out of the Run mode
(that is, Fault or PGM), the protocol ports can be shut down as prescribed in the
user configuration. When the processor is returned to a running state, the module
will resume communications on the network.