Rockwell Automation T8444 Trusted TMR Pulse Generator and Monitoring Module - Manual (Page 9)

Trusted
TM
Module T8444
Issue 09 Apr 10 PD-T8444 9
1. Description
The TMR Pulse Generator and Monitoring module is a member of the Trusted TM range of Input/Output
(I/O) modules. All Trusted TM I/O modules share common functionality and form. At the most general
level, all I/O modules interface to the Inter-Module Bus (IMB) which provides power and allows
communication with the TMR Processor. In addition, all modules have a field interface that is used to
connect to module specific signals in the field. All modules are Triple Modular Redundant (TMR).
Figure 1 Module Architecture
All High Integrity I/O modules are made up of 4 sections: Host Interface Unit (HIU), the Field Interface
Unit (FIU), the Field Termination Unit (FTU), and the Front Panel Unit (or FPU).