I have an intermittent issue on DeltaV 12.3 where the dynamic graphic fill in a vessel on a mimic does not correspond to the actual value shown digitally on the faceplate. Re opening the mimic usually cures this.
The dynamic fills in question use the "fetch input range on open" option to fetch the range of the data source. I suspect the cause of the problem is that this is not retrieved correctly so a default is used. The reason I suspect this is that there are frequent entries in the standard DvStatus.grf mimic reporting "Temporary read" and "module has not been located" errors. Presumably only one attempt is made to retrieve the input range and if this fails then there is a problem. If retrieval of the actual process value fails, there will be further attempts every 1s (or whatever the refresh interval is) and so the value will quickly be corrected.
I would welcome any information about the purpose of the DvStatus.grf mimic and whether I should be getting frequent read errors. If not then how do I get rid of them?