3009 TRICONEX Main Processor Module Tricon

Description:

A Tricon chassis houses three Main Processor (MP) Modules, each serving one channel (also referred to as a leg) of the controller. Each processor independently communicates with its I/O subsystem and executes the control program. The three MP Modules compare data and the control program at regular intervals. Each Main Processor operates autonomously with no shared clocks, power regulators, or circuitry. Processor specifications are listed in the specifications table for each MP.

A high-speed proprietary bus system called TriBus provides these functions: interprocessor communications, hardware majority voting of all digital input data, and comparison of control program variables. TriBus uses a fully isolated, serial communication channel, which operates at 4 Mbps with the Model 3006 and Model 3007 MPs, at 25 Mbps with the Model 3008 MPs or the Model 3009 MPs when they are installed in the Model 8110 Main Chassis, and at 1000 Mbps when the Model 3009 MPs are installed in the Model 8120E Enhanced Performance Main Chassis. A direct memory access controller manages the synchronization, transfer, voting, and data correction independent of the control program or executive software.

DRAM (dynamic random-access memory) is used for control program, sequence-of-events data, I/O data, diagnostics, and communication buffers. SRAM (static random-access memory) is used for the defined program retentives and configuration of disabled points. Memory is regularly validated by the TriBus hardware-voting circuitry.

To guarantee that the controller provides a deterministic response time, the scan time should always be set to a value greater than the I/O poll time (the maximum time needed by the controller to obtain data from the input modules). You can view the I/O poll time on the System Overview screen in the Enhanced Diagnostic Monitor (sold separately). For more information, see the Enhanced Diagnostic Monitor User’s Guide. Also, TriStation 1131 4.11.x and later provide an estimate of the poll time

Frequently Asked Questions:
1.What Baud rate does 3009 support?
2 Mbps

2.What's I/O interface do 3009 have?
RS-485

Datasheet Link:

3009 TRICONEX Main Processor Module Tricon PDF Datasheet