Using system.opc.writeValues

Ignition
1

How do I format the following individual OPC writes using: system.opc.writeValues.

system.opc.writeValue(“IgnitionOPCUA”, “[CHEMIDYN]S2:40”, hourupdate)
system.opc.writeValue(“IgnitionOPCUA”, “[CHEMIDYN]S2:41”, minuteupdate)
system.opc.writeValue(“IgnitionOPCUA”, “[CHEMIDYN]S2:42”, secondupdate)

2

The user manual tells you what parameters the call expects.

It might look something like this:

system.opc.writeValues(
	"IgnitionOPCUA", 
	["[CHEMIDYN]S2:40", "[CHEMIDYN]S2:41", "[CHEMIDYN]S2:42"], 
	[hourupdate, minuteupdate, secondupdate]
)
3

[quote=“Kevin.Herron”]The user manual tells you what parameters the call expects.

It might look something like this:

system.opc.writeValues( "IgnitionOPCUA", ["[CHEMIDYN]S2:40", "[CHEMIDYN]S2:41", "[CHEMIDYN]S2:42"], [hourupdate, minuteupdate, secondupdate] ) [/quote]

Funny, I was just working with this today…

I’m thinking that a python manual is the second most useful document to have on your computer, right after the user manual…

4

Be careful that you have a manual for the right version of Python. Ignition currently uses a rather ancient Python 2.1…

5

exactly what I was hoping to find out…

6

This link to Python 2.1 documentation may be useful.

FYI, updating to 2.5 (or the most recent production version of Jython) is on the development roadmap without a current estimated release date.

7

Teaser?

The current version is: 2.5.2 (Release_2_5_2:7206, Mar 2 2011, 23:12:06) [Java HotSpot(TM) 64-Bit Server VM (Sun Microsystems Inc.)]