Knowledge Base / Gateways / AN-X2 / Remote IO DRV

How to scale values from 16 bit integers to floats with the AN-X2-AB-DHRIO gateway running the RIO DRV firmware

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When migrating an old 1305 or 1336 drive to a new PowerFlex 753 or PowerFlex 755 drive it is necessary to scale some of the parameters.  When scaling from an integer to a float the following formula is used to generate a multiplier which is then inserted into the RioDef template file.

Formula:
New Scale Maximum Value and divide it by the current maximum scaled value

Example:
Output Frequency as an input to the PLC or SLC
Maximum in the drive is 650.00
Maximum in the PLC or SLC is 32767
32767 / 650 = 50.41

I:1 <-Feedback * 50.41

Example:
Commanded Speed Reference as an input to the Drive
Maximum value in the drive is 13920
Maximum in the PLC or SLC is 32767
13920 / 32767 = .4248

O:1 * .4248 -> Reference