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You can configure each group in the OPC Client to read data from the OPC server’s internal cache or from an actual device. Reading from the cache returns the last value read by the OPC server. The server updates the cache based on the group’s update rate. Reading from an actual device returns the latest values from the process hardware. Although the latest value is obtained, reading from a device can cause undue stress on the system. For this reason, we recommend that you only use device reads for diagnostic and troubleshooting purposes.
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Important Notice You do not have the latest version of iFIX! You are missing out on the newest capabilities and enhanced security. For information on all the latest features, see the iFIX product page. For more information on upgrades, contact your GE Digital sales agent or e-mail GEDClientServices@gevernova.com. For the most up-to-date documentation, go here. |
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