Time fuction

Ignition
1

how to extract current time of the system and write it to the tag which is defined as date??

i am able to extract time in string format but i want it in date format.because i want it to update it in mySQL table datetime column…

2

if you are doing this in a script (based on your other posts, I believe this to be true), then a datetime.datetime type will work.

[code]import datetime

#get current time
t=datetime.datetime.now()

#write to tag
system.tag.write("[default]Test/DateTime", t)[/code]

3

I find the java objects that exist under the hood are a bit easier to use. Jordan’s code would become:[code]from java.util import Date

#get current time
t=Date()

#write to tag
system.tag.write("[default]Test/DateTime", t)[/code]If you inspect any datetimes that come from component properties, you’ll find that they are instances of java.util.Date.

4

thanks for reply,

is there any way to perform arithmatic operation on this date i got…( i have performed arithmatic in expression binding but not sure same will work in component scripting or not.)

i wanted to add 90 mins to the time i stored in Tag …

5

system.date.add* performs arithmetic docs.inductiveautomation.com/pa … Id=6045659

tplus90 = system.date.addMinutes(t, 90)
6

i am using the code mentioned by pturmel:
from java.util import Date

#get current time
t=Date()

#write to tag
system.tag.write("[default]Test/DateTime", t)

but when i perform system.date.addMinutes(t,90) operation, i get following error:

1st arg can’t be coerced to java.util.Date…

is there any other way to perform date operation?

7

What is the exact code you are using? That should work fine, I just tested it and it works.

[code]from java.util import Date

#get current time
t=Date()

tplus90 = system.date.addMinutes(t, 90)
#write to tag
system.tag.write(“Test/DateTime”, tplus90)[/code]

8

thanks for the reply, it worked for system.date.now()…

i am using following code:

temp = 2
currentdate = system.date.now()
EntryGateTimeOut = system.date.addMinutes(currentdate, 90)
EntryTimeOut = system.date.format(EntryGateTimeOut,"YYYY-MM-dd HH:mm:SS")
system.tag.write("TT/TT%d/EntryGateTimeOutTime"%(temp),EntryTimeOut)