Expression taking 17 seconds approx to convert float to string in UDT

Ignition
1

Ignition version 7.9.4
I have created a UDT where I receive the date and time in float from a Plc. I pass these values to an expression tag (datatype string type). we are using the following expression for this:

dateformat(fromMillis(tolong(({{[.]IG_CloseDate_R}-25569)*86400000 + tolong({[.]IG_CloseTime_R}*86400000)-(getTimezoneRawOffset()*60*60*1000))), "yyyy-MM-dd HH:mm:ss")

the open /close date and time are in float

This expression takes 17 seconds to resolve.
Is there any way to reduce the time it is taking? 17 seconds is too long.

2

Did you copy/paste this or incorrectly transcribe it? There are an unbalanced number of curly brackets.

3

Also, it’s probably not that your expression itself is taking 17 seconds, but that the expression is on a scan class that’s slow for some other reason, like query tag(s). If you move the expression tag to a new scan class, does it still take 17 seconds?

4

i wrote this code to the website by hand, so there is a chance that i missed a bracket.

5

so, the expression tag is set to 1 sec, all the other memory tags providing the float values are also set to 1 sec.
when i change a float value , i can count upto 15 before i see the updated string on the expression tag.

6

Go to your Gateway Webpage >> Status >> Tags >> Click “Details” next to your Realtime Tag Provider >> Scanclasses. You should see a list of your scan classes with various stats. Take a screenshot if you are allowed to and upload here. You’re looking for any scan classes where the “Last Duration” or “Avg Duration” is greater than the rate.

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