Rockwell-automation T8110B/T8110 Trusted TMR Processor Instrukcja Użytkownika Pobierz pdf (Strona 22)

Trusted

TMR Processor T8110B/T8110

Issue 18 Feb 08 PD-T8110B/T8110 22

3.3.4. Front Panel Voting Bus

The front panel voting bus provides the following functions:

Figure 2 Functional Block Diagram showing

Trusted

TMR Processor Communications

3.4. Isolation

All signals exchanged between FCRs are protected to prevent the propagation of faults between

independently powered FCRs .

The front panel diagnostics port is electrically isolated from the front panel FCR.

The processor and front panel FCR provide electrical isolation for the 24V dc power feed in addition to

the POWER WARNING signal.

• voted watchdog signal to the front panel for indicating Processor faults.

• voted serial data to the front panel for communications, front panel indicators, etc.

• protected serial data from the front panel for communications, front panel status, etc.

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Rockwell-automation T8110B/T8110 Trusted TMR Processor Instrukcja Użytkownika Strona 22