Description, Figure 1 module architecture, Trusted – Rockwell Automation T8423 Trusted TMR 35 - 120 Vdc Digital Input Module User Manual
Page 8: Module t8423
Trusted
TM
Module T8423
Issue 15 Apr 10
PD-T8423
8
1. Description
The Trusted
TM
TMR 35-120Vdc Digital Input 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 Trusted
TM
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 Trusted
TM
I/O modules comprise four sections: Host Interface Unit (HIU), the Field Interface Unit
(FIU), the Field Termination Unit (FTU) and the Front Panel Unit (or FPU).