T8151B, T8151C, P8151
T8151B Communication interfaces
Description
The Trusted communication interfaces provide the Trusted controller with an intelligent communication interfaces which act as a relay between the Trusted processor and other systems, i.e. the engineering workstation (EWS) and third party systems. This minimizes communications loading of the Trusted processor.
The module has a Motorola 600 series processor and MPC106 PCI bridge/memory controller, its associated memory and glue logic. There is also a site for a PCI mezzanine card for future expansion.
The module communicates with the Trusted processor via the triplicated inter-module bus (IMB). When polled by the processor, the module’s bus interface 2-oo-3 votes the data from the IMB, and transmits back its reply via all three channels.
The module implements communications processing under the control of the Trusted processor. Messages received from the processor or an external link are validated undergo the necessary protocol conversion and are then forwarded to their destination.
An electrically isolated RS232 diagnostics serial port is provided on the front panel of the module for interfacing to the EWS.
The module receives a dual 24V dc supply from the controller backplane. An on-board power supply unit provides voltage conversion for the module electronics, supply conditioning and protection.
Configuration of the module is carried out using the Trusted Toolset running on an engineering workstation. Once configured and loaded into the Trusted controller, replacement modules are online educated by the TMR processor.

Features
Dual Ethernet and four serial ports available.
Support for a wide range of communications protocols.
Secure, dependable communications via high performance communications links.
Trusted Operating System.
Built-in hardware and software self-testing.
Hot replaceable.
Front panel serial diagnostics port.
Module fault and status indicators.
IEC 61508, SIL 3 safety applications.
Provision for future system expansion.