Opc server for ac 800M, Installation and Configuration
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| Save Cold Retain Values
Each time Control Builder enters Offline mode, cold retain values are normally saved. However, there may be long time going between different times of saving these cold retain values, and in case of a power failure more recent cold retain values might be available if using the Save Cold Retain Values function in OPC Server for AC 800M. You can configure the Offset. The Offset is added to the configured cycle time for the first cold retain save after activation. 'Save cold retain values' is a function in the OPC Server for cyclically saving variable values that have been declared with the attribute cold retain. This subsection only describes issues for 800xA and can therefore be ignored by CCB Users. Save Cold Retain Values Section 2 Start-up and Configuration 30 3BSE035983-510 Saving cold retain values From the OPC Server Configuration Panel, open the Save cold retain values dialog box by selecting Tools > Save cold retain values... To set automatically saved cold retain values, select the option “Automatically”, and set an interval time (recommended every 720 minutes). To configure offset time for the set interval, set an offset time (recommended value is 0 minutes). By setting offset time, you can reduce controller load while running redundant OPC Servers. In a redundant configuration, one of the OPC Servers should have offset time set to zero and the other as 360. This setting avoids the situation where two OPC servers fetch cold retain values from the controllers at the same time. Figure 9. Save cold retain values dialog. Section 2 Start-up and Configuration Access Rights 3BSE035983-510 31 tải về 0.83 Mb. Chia sẻ với bạn bè của bạn:
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