Rockwell Automation T8403 Trusted 24V dc Digital input Module - 40 Channel - Manual (Page 8)

Trusted
TM
Module T8403
Issue 15 Jun 13 PD-T8403 8
1. Description
The Trusted
TM
TMR 24V dc 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).