Return hour value to memory tag called hour with this tag

Ignition
1

missing syntax
date = system.date.now()
system.date.getHour(date)

2

I'm not sure what the question is, are you wondering why your script doesn't work in a tag expression?? If so, this doesn't work because you are using Ignition's scripting language in an expression. Expressions use the expression language not scripting.

// 10,000ms = how often to evaluate now(), blank = use tag scan rate, 0 = off
getHour24(now(10000))
3

The expression language is not a scripting language. It does not support the '=' assignment instruction but does accept '=' as a comparison operator.

x = 5 is an assignment and will fail.
if({value} = 5, "Five", "Not five") is a comparison operation and will work.

Think of expressions as being like Excel formulas. They perform operations on values but are not scripts.

4

It does work - getHour24(now()) returns the integer for the hour. Do you know how I can get date and time? getDateTime() does not seem to work

5

When you are writing your expression, click on the sigma symbol in the editor to see all expression functions. Also, see the link I reference in my first post. now() by itself would return a date time.

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6

thanks very much

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