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T8122 Processor Interface Adaptor P8122

T8122, T8122C, P8122

T8122 Processor Interface Adaptor (Modbus Master)

Description

The Trusted Processor Interface Adaptor T812X provides easy access to the communications ports of the Trusted TMR Processor in the Trusted Controller Chassis for Peer to Peer communications, DCS and other links, networked PCs etc. The Adaptor also supports fault/fail and diagnostics connections to the Processor, and connection facilities for IRIG B time Synchronization facilities, as well as enabling the user of Modbus Master facilities on the T8151 Communication Interface Card.

The Adaptor comprises a printed circuit board (PCB) on which the communications ports are mounted. The PCB also supports two 48- way DIN41612 E-type connectors which enables the Adaptor to be plugged into the Trusted TMR Processor Module input/output (I/O) connectors (Active and Standby) at the rear of the Trusted Controller Chassis. The communications ports available from the Adaptor are RS485 (Port 1) and RS422/485 (Ports 2 and 3). The Ports are accessed via Phoenix contact 2.5mm pitch connectors.

Fault/fail, diagnostic and PSU shutdown monitor, and IRIG B time Synchronization signals are also available via Phoenix connectors.

A complete set of connectors mentioned above are allocated to both the Active and Standby processors.

Termination resistors for RS422/485 communications are selectable via links. These are mounted on the PCB and are the only configurable items which require setting up before using the Adaptor.

When the Adaptor is plugged into the I/O connector on the rear of the Trusted Controller Chassis, it is mechanically latched in position. Release buttons are provided to enable the user to unplug the Adaptor as required.

Features

Allows easy access for external systems to communicate with a Trusted System

Easy installation (connects directly onto the I/O connector at the rear of the processor)

Two RS422/485 connections

One RS485 connection

Fault/fail connections for Active and Standby Processors

Processor diagnostics connection

PSU shutdown monitor connections

Connection facilities for IRIG B122 and IRIG B002 time Synchronisation signals

Modbus Master enabling of the T8151B Communication Interface Card



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