Loss of Cold Retain Values in AC800M OPC Servers
System 800xA V3.1
On AC800M OPC Servers, settings to Save Cold Retain Values "Automatically" do not get retained after a reboot of AC800M OPC Servers. Automatic save setting ("Automatically Active" Radio Button) reverts to Manual save setting ("Manually" Radio Button) in "Save Cold Retain Values" Options window of "OPC Server for AC800M Configuration".
The issue was experienced because of not performing “Save Configuration” step after Save Cold retain Values setting was changed to "Automatic".
Following steps, detailed in document 3BSE035983-510 -AC 800M OPC Server, must be performed in a sequential order to retain the Automatic Saving of cold retain values:
1: Enable Save Cold Retain Values (See pages 29 and 30.)
2: Use OPC Server Configuration Panel and click File > Save. (See bottom of page 31)
3: Enable Automatic Load of OPC Server Configuration (See page 32)
"Cold Retain Values save setting" is accessible on AC800M OPC Servers via “Start\Programs\ABB Industrial IT 800xA\Control and IO\OPC server for AC800M\OPC server for AC800M- OPC Server Configuration Window\Tools\Save Cold Retain Values”.
The issue is applicable to all released versions of 800xA with AC800M Connect and stand-alone AC800M OPC Servers.