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Subject: Re: How to define a global variable and global array in python script for a widget of Control system studio (CS
From: "Kasemir, Kay" <kasemirk@ornl.gov>
To: lzf neu <lzfneu@live.com>, "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Mon, 30 Oct 2017 12:49:17 +0000

Hi:


This is how you read:

> data="">


This is _not_ how you write, since you obviously can't assign anything to the number returned by getDouble():
> PVUtil.getDouble(pvs[1])=data

> However, the error occurs:
> SyntaxError:("can't assign to function call", ('<script>',3,0, 'PVUtil.getDouble(pvs[0])=value\n'))

This is how you would write:
pvs[1].setValue(data)


If you want to use scripts, it might be a good idea to study the example scripts in BOY Examples/scripts, where "setValue" is used a couple of times.
Or read the online help:
CSS Applications, Displays, BOY, Script, Access PV, "2. Write PV Value" introduces PV.setValue.

-Kay

References:
Re: How to define a global variable and global array in python script for a widget of Control system studio (CSS) ? Anton Derbenev
答复: How to define a global variable and global array in python script for a widget of Control system studio (CSS) ? lzf neu

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