ICS TRIPLEX T8151B

Description

ICS TRIPLEX T8151B
The Trusted® Communications Interface (CI) is an intelligent module that provides a range of
communication services for the Trusted Controller, minimising communication loading of the Triple
Modular Redundant (TMR) Processor.
A user-configurable module, the CI can support multiple communication media.
Up to four Communications Interfaces (CIs) can be supported by a Trusted System.
Features:
• Trusted Operating System.
• Dual Ethernet and four serial ports.
• Support for a wide range of communication protocols.
• Secure, dependable communications via high performance communications links.
• Modbus Slave.
• Optional Modbus Master (with T812X Trusted Processor Interface Adapter).
• Optional Sequence Of Events (SOE) Over Modbus.
• Front Panel serial diagnostic port, fault and status indicators
This port operates at 19200 baud on RS232. A command line diagnostic protocol is available
via this port, accessed using a TC-304-01 Maintenance Cable and a terminal program. This
protocol is not affected by the Processor Front Panel keyswitch.
3.1.2. Rear Serial Ports
These ports may be configured between 1200 and 115200 baud. All four ports support
RS485, port 1 supports RS232 with full handshaking and port 2 supports RS232 without
handshaking. These ports can be allocated as a Modbus Remote Terminal Unit (RTU) Slave
or Master (Modbus Master requires a T8122 or T8123 Processor Interface Adapter).
3.1.3. Ethernet Ports
These ports can each support multiple protocols simultaneously.
• Modbus RTU Slave, packaged as a serial stream on Ethernet. This is appropriate for
conversion to serial Modbus at terminal servers or for the Trusted OPC servers and
SOE/Process Historian collector. Up to ten connections can be made to Ethernet
slaves, and the port only needs to be allocated once. Port 2000 is used by default.
The slave can either actively make a connection (appropriate for some terminal
servers) or wait for a connection.
• Open Modbus Transport Control Protocol (TCP), an Ethernet Modbus protocol
designed by Modicon. This will automatically operate if port 502 is selected. Only
Modbus Slave is available on this protocol.
• Modbus RTU Master, packaged as a serial stream on Ethernet. This is enabled by
fitting a T8122 or T8123 Processor Interface Adapter. The Master only makes one
connection, so it may connect to one Ethernet based slave or to one chain of slaves
on a serial link via a terminal server. Each CI can control up to 16 Modbus Masters,
communicating with up to 64 Slaves total, with up to 400 messages total. Each
Master, Slave and message can be individually controlled and monitored, including
statistical data. A Modbus Master can also broadcast messages to some or all Slaves
simultaneously.
• SOE over Modbus protocol. A section of the Modbus address map is used as an
event buffer for SOE events (not Process Historian). This requires programming in
the remote end to poll the data block (with a Modbus Master) and interpret the