Communication Performance Considerations

Many external factors influence the performance of control and monitoring systems. The capabilities of the computer, the I/O Device(s), and the communication pathway between them are obvious factors. The faster they can transfer data, the faster your system operates. (Plant SCADA always attempts to maintain a data transfer rate as fast as the I/O Device hardware can support.) The data transfer rate is hardware dependent: once you have installed the hardware, your ability to influence this characteristic is limited.

However, there is one area where you can directly affect the performance of your runtime system: the arrangement of data registers in the I/O Device(s).

See Also

Caching Data

Grouping Registers

Remapping Variables in an I/O Device