Rockwell Automation T812X Trusted Processor Interface Adaptor - Manual (Page 7)

Trusted
TM
Process Interface Adaptor T812X
Issue 8 Sep 07 PD-T812X 7
1. Description
The Trusted TM Processor Interface Adaptor T812x is designed to be connected directly to the rear of a
Trusted TM TMR Processor position in a Trusted TM Controller Chassis T8100. The Adaptor provides a
communications connection interface between the Trusted TM TMR Processor and remote systems.
The Adaptor also provides the option of connecting IRIG B time synchronisation signals to the
Processor. Connection between the Adaptor and the Trusted
TM TMR Processor is via two 48-way
DIN41612 E-type connectors (SK1), one each for connection to the Active and Standby Processors.
Figure 2 shows the physical layout of serial port, diagnostics and IRIG B connectors on the Adaptor
pcb.
Figure 2 Adaptor Layout
The Adaptor comprises a printed circuit board (pcb) on which the communications ports, IRIG B
connectors and both SK1 sockets (connectors to the Active/Standby Trusted
TM TMR Processors) are
mounted. The Adaptor is contained within a metal enclosure and is designed to be clipped onto the
appropriate connector at the rear of the Controller Chassis. Release buttons are provided to enable
the Adaptor to be disconnected.
The communication ports available at the Adaptor are RS422/RS485 2 wire on Port 1, and
RS422/RS485 2 or 4 wire on Ports 2 and 3.
An earth point is provided on the pcb so that the Chassis earth of the Processor will be connected to
the shell of the Adaptor and module rack earth. It is an important safety and ESD requirement that the
equipotential bonding is connected and maintained.