Refreshing iFIX Displays

You can use the Refresh Rate Expert to set the refresh rate of all the objects in your picture. What is important to remember about refresh rates is that the more unique refresh rates in a picture, the greater the potential impact to the overall system performance. You may certainly implement a slow rate for some objects and a fast rate for other objects, but if you try to finely tune multiple objects with many different rates, you may actually make your overall refresh performance slower.

The following recommendations may help you to optimize your system performance while implementing a refresh rate strategy:

• Leave the default rate of 1 second for the refresh rate of every animation in a picture. Alternatively, use a slower rate (such as 5) for the objects that can have slow updates, and a fast rate (such as .1 second) for objects requiring faster updates. More unique update rates will tend to result in slower performance.
• Avoid using a refresh rate of 0. This is the fastest refresh rate possible, and will, therefore, have the greatest impact to your system's performance. The performance impact will be greatest on the SCADA nodes which host the data.
• When you modify pictures that were created with early versions of iFIX, use the Refresh Rate Expert to set the older pictures' update rates to 1 second or greater.