Configurable Logic Blocks

The configuration memoiy of the used drtex 5 is divided into frames. Each frame contains 41 words of 32 bits each, for a total of 1312 bits. Frames are accessed by their individual addresses, through the Frame Address Register (FAR), and are divided into block type, top/bottom bit, row, major address and minor address. Each frame row comprises several rows of the basic FPGA components, such 20 rows of Configurable Logic Blocks (CLBs) and four block RAMs. 

The programmable interconnections between the configurable logic blocks and I/O blocks can be made in several ways, for example, general purpose, direct and vertical, and horizontal long line interconnect. 

The process and instrumentation (P I) diagram provides a graphical representation of the control configuration for the process. The P I diagrams illustrate the measurement devices that provide inputs to the control strategy, the actuators that will implement the results of the control calculations, and the function blocks that provide the control logic. 

One level below the flow network, the analyst must define the Reliability Block Diagrams. Reliability Block Diagrams (RBD) are similar to logic flow networks and describe the interdependency between equipment items. Two configurations are to be defined blocks in series or blocks in parallel. Equipment items in series are required to be operational at all times to keep the system available. Equipment items in parallel, also known... 

Capabilities of components of a production system are a combination of the equipment hardware and well-formed instructions (equipment recipes, handling instructions). Equipment recipes, for instance, are loaded fiiUy automated by the equipment for the purpose of configuration which is performed by function blocks of control components. Alternatively, by means of handling instractions human operators are instructed to turn knobs and adjust dials as provided by the equipment interface. Those actions again lead to the configuration of the control logic inside the equipment. 

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