Description, Figure 1 module architecture, Trusted – Rockwell Automation T8448 Trusted TMR Zone Interface Module - 40 Channel User Manual

Page 9: Module t8448

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Trusted

TM

Module T8448

Issue 14 Apr 10

PD-T8448

9

1. Description

The TMR Zone Interface 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).

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