Question:
How can I apply a scale in an I/O Tag? Can I retrieve, via scale, its value without the scale?
Solution:
To use a value scale in an I/O tag, enable the Scale column (via checkbox), as well as Min. UE, Max. UE, Min. I/O, Max. I/O, and inform these values to the scale. The Min. UE and Max. UE columns represent the value settings displayed in the supervisory; the Min. I/O and Max. I/O columns are the values expected in the PLC (device).
For example, to show these values divided by 10:
Min. UE = 0 Min. I/O = 0
Max. UE = 100 Max. I/O = 1000
In this example, when the device sends 500, the supervisory will show valor 50.
NOTE: the values set up as limits do not influence the communication, and will only be used to calculate the scale. For example, when Max. UE = 100 and Max. I/O = 1000, and the device sends 2000, no error will be generated: the communication will work normally, and the supervisory will display 200.
For the I/O tag’s value before the scale, access its RawValue property.
