Question:
Can I write all the values in a block at once, instead of writing them individually in each element?
Solution:
Yes. To do so, disable the IOBlock’s AllowWrite property (False). It establishes that the block will not perform automatic writes.
There are two possibilities for writing in the block:
1. By using WriteEx method:
- Create an Array with the same size (i.e., number of elements) of your IOBlock;
- Pass the value to be written in the block element to each of the Array’s elements;
- After loading the Array with these values, use WriteEx method to write the values.
Example of script:
'Declaring the Array's size
Dim ArrayValue(4)
'Loading the Array's elements
ArrayValue(0) = 10
ArrayValue(1) = 20
ArrayValue(2) = 30
ArrayValue(3) = 40
ArrayValue(4) = 50
'Writing the block
Application.GetObject("Driver1.Block").WriteEx ArrayValue
2. By using Write method:
- Disable the AllowRead property (automatic read) of the IOBlock where you want to write;
- Load the block elements with the desired values;
- After the values have been loaded, use Write method to write the values of the elements previously loaded;
- After writing them, enable the block’s AllowRead property (True) again.
Example of script:
'Disables read
Application.GetObject("Driver1.Block").AllowRead = False
'Loads values into elements
Application.GetObject("Driver1.Block.Element1").Value = 10
Application.GetObject("Driver1.Block.Element2").Value = 20
Application.GetObject("Driver1.Block.Element3").Value = 30
Application.GetObject("Driver1.Block.Element4").Value = 40
Application.GetObject("Driver1.Block.Element5").Value = 50
'Writes the block
Application.GetObject("Driver1.Block").Write()
'Enables read
Application.GetObject("Driver1.Bloco").AllowRead = True
Attached to this article is a sample application that illustrates the procedures seen above.
Attachments:
