I have a Channels table, with one column being the unit a channel is on. This can change, and is simply the name of the unit. I have another table in the driver that is the list of units, containing information like the serial number.
How can I trend the unit the channel is on?
Trending on strings does not work, nor does a dynamic discrete. There is no numeric representation (from the device) of the unit that is unique.
Any information is appreciated. Thanks.
Hi Blake,
We have come across the same issue ourselves.
If you are comfortable editing a protocol using dis, you can edit the following fields.
Where the Raw type is "other" change to "numeric text" and the Type from "string" to "Double"
<Interprete>
<RawType>numeric text</RawType>
<LengthType>next param</LengthType>
<Type>double</Type>
</Interprete>
Then, under Measurement, change "string" to "number"
<Measurement>
<Type>number</Type>
</Measurement>
You can then enter a unit for the display as it is now a number and not a string.
I hope that helps.