I need help with a script that will update the values of tags

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1

Hello all,

I need a script that will use the values from "ImpA" which is located in a memory tag dataset to update my values in the "Ideal Current" tags.
My CB folders are 23(CB 1...CB 23).

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2

could be something like this

# type here you ds tag paht
dsTagPath = ''
# fix your destination path
cbBasePath = '....../Inverter %s/DC Inputs/CB %s'

# read you DS here
dataset = system.tag.readBlocking([dsTagPath])[0].value

tagPaths = []
values = []
for row in system.dataset.toPyDataSet(dataset):
	cbNumber = str(row['CBNumber'])
	inverterNumber = str(row['InverterNumber'])
	impA = row['ImpA'] 
	
	tagPaths.append( cbBasePath % (inverterNumber, cbNumber) )
	values.append( impA) 

# your final write
system.tag.writeBlocking(tagPaths, values)
3

Is there a good reason that you are not using expression bindings that would be much faster and easier on resources?

4

I didn't think that of that. Wouldn't that require going into each folder and creating the expression(which might take longer)?

5

Are you not using a UDT for each breaker? That usually simplifies this sort of thing (after the initial head-scratching). You can make a parameter on the UDT for the CB number and use that in the expression binding to look up the appropriate value in the dataset.

See the Dataset Access section: