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. (CitectSCADA always attempts to maintain a data transferTransfer of information from one location to another. The speed of data transfer is measured in bits per second (bps). 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).