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DeviceHigh |
This property defines the highest value achieved by this I/O Tag in a device. This property is used to perform a scale adjustment of the value received from a device before setting it to the Value property. Likewise, the inverse operation is performed before sending that value to the I/O Driver, when writing. This conversion only occurs when the EnableScaling property is set to True. Default value of this property is 1,000. The next script contains an example of using this property.
Sub Tag_OnStartRunning()
' Adjusts the scale of temperature
' ranging from 0 to 255 at PLC, but it actually means
' 0 to 100 Celsius degrees
EU = "Celsius degrees"
EnableScaling = True
DeviceHigh = 255
DeviceLow = 0
EUHigh = 100
EULow = 0
End Sub
NOTE |
Bit values, the properties from Bit00 to Bit31, are not affected by adjustments in the scale, that is, they represent the bits from the value read by a device before conversion. |