ICS Triplex T8226 Power Supply Modules

The Trusted CI provides the Trusted System with an intelligent Communications Interface,

acting as a relay between the Processor, other Trusted Systems, the Engineering Workstation

and third-party equipment.

Data is transferred between the TMR Processor and the Communications Interfaces using a

common interface called the Network Variable Manager. When data is read from a Trusted

System, the data is obtained from the local copy maintained on the Communications

Interface, providing a fast response.

Data writes are more complicated. If a data write simply updated the local copy and was

then relayed to the processor, the other Communications Interfaces in the system would

carry different data. This may cause problems for redundant links.

To overcome this problem, when data is written to a Communications Interface, it is first

passed to the TMR Processor and the write is acknowledged immediately by the

Communications Interface (to avoid communications delays). The processor updates its own

database and then sends the data back to all Communications Interfaces so that they all

have the same data. This can take one or two application scans. This means that subsequent

reads will receive the old data immediately after the write, until the new data has been

distributed.

All changes to CI parameters (.ini changes) loaded online do not require a power cycle, and

will take effect immediately. The Communications Interface disconnects all communications

and restarts. Communications is also restarted on an application online update and is shut

down when the application is stopped.

Application

Supported Protocols

Front Panel Serial Port

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.

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).

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ABB EL3040 GAS ANALYSIS PANEL

ABB KENT-TAYLOR ZIRCONIA ZMT OXYGEN ANALYZER PANEL ZMT/231/000000 /4112

ABB Kent-Taylor Zirconia ZMT Oxygen Analyzer Panel ZMT/231/000000/4112

Abb Kent-Taylor Zirconi Zmt Ossigeno Analizzatore Pannello Zmt / 231/000000/411 2

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