| Applies To: |
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| Summary: |
| I have configured Cicode to only update
certain DiskPLC I/O tags on the Primary, however it is always
trending a value of zero ( 0 ).
My cicode has an IF statement that checks which CitectSCADA PC is the Primary before executing and updating the tag. eg. IF ParameterGet("Lan",
"Node", "") = "PRIMARY" THEN When the tag is viewed on either Primary or Standby the correct value is displayed, suggesting that the cicode and I/O Servers are working correctly. This tag is then trended but the trend value is always zero. i.e.. Trend Tag Name = Tag Expression = Tag Trigger = Sample Period = 00:01:00 Type = TRN_PERIODIC Comment = Furnace Increment Tag File Name = [TREND]: No Of Files = 12 Period = 1st How can I get the DiskPLC IO tag to trend correctly? |
| Solution: |
| One of the solutions to this is to check your Citect.INI settings under the [DNS] section. Making sure that your primary and standby parameters contain correct values. It is a common fault to have changed network settings on a PC and not to update the Citect.ini files to match these, then at a later stage when making changes such as this, you may encounter similar issues. In this case simply resetting the primary and standby to 'blank' defaults will solve the issue. |
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