ProSoft Technology MVI56-S3964R - Manual (Page 55)

Reference MVI56-S3964RT ♦ TControlLogix PlatformT
TSiemens 3964R ProtocolT
ProSoft Technology, Inc. Page 55 of 78
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.
Call I/O Handler
Call CFG/DEBUG Port
Driver
Call Network
Slave Drivers
Call I/O Handler
Transfers data between the module and processor
(user, status, etc.)
Call Serial Port Driver
Rx and Tx buffer routines are interrupt driven. Call to
serial port routines check to see if there is any data
in the buffer, and depending on the value, will either
service the buffer or wait for more characters.
Call Network Slave Drivers
Respond to messages received.
From Power Up Logic
Backplane Data Transfer
Receive from CP
April 17, 2008