Rockwell Automation T8402 Trusted Dual 24V dc Digital Input Module - 60 Channel - Manual (Page 8)

Trusted
TM
Module T8402
Issue 13 April 10 PD-T8402 8
1. Description
The Trusted TM Dual 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.
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).