Rockwell Automation T8160 Trusted TMR Interface - Manual (Page 13)

Trusted TM TMR Module T8160
Issue 13 May 13 PD-T8160 13
3. Application
3.1. Module Management
The module is configured automatically by the Trusted TM TMR Processor.
Configuration information in the module’s memory is compared with the physical I/O sub-system. Any
discrepancies are identified and reported.
Changeover between active and standby modules (in dual module configurations) is controlled by the
Trusted
TM TMR Processor, when the active Trusted TM TMR Interface either fails or is removed
3.2. Communication Busses
3.2.1. Inter-Module Bus
The processor sub-system fault containment regions contain the Bus Interface for the Inter-Module
Bus. The Bus Interface provides communication between modules in the Controller chassis.
The Inter-Module Bus contains the following triplicated signals:
Additionally, a CHASSIS CONNECTION signal is provided for grounding the module electromagnetic
interference shield.
3.2.2. Processor Memory Voting Bus
The memory voting bus is 8 bits wide and provides real-time voting of memory read cycles.
3.2.3. Processor Control Voting Bus
The control voting bus is used to vote the necessary control signals for the Regent+Plus I/O Processor
design.
• 6.5V
- IMB power
• DATA -
8 bit, bi-directional bus
• CMND/RESP
bus direction control
• IOM_SEL
I/O module select signal
• IOM_CLK
I/O module clock signal
• SYS_WDOG
indicates the operability of the associated TMR Processor
fault containment region
• PWR_FAIL
indicates a power fault in the associated TMR Processor
fault containment region.