Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 117)

Communications 8-9
1560E-UM050B-EN-P - June 2013
Reference/Feedback
The SMC-Flex does not offer the analog Reference feature. The analog
Feedback feature is supported and will provide Parameter 1, Current in
Phase A, automatically as the feedback word.
Parameter Information
A complete listing of the SMC-Flex parameters is located in Appendix B.
The parameter values stored and produced by the SMC-Flex through
communication are unscaled numbers. When reading or writing values
from a PLC image table, it is important to apply the proper scaling factor,
which is based on the number of decimal places.
Read Example
Parameter 11; Power Factor — The stored value is 85. Since this value
has two decimal places, the value should be divided by 100. The correctly
read value is 0.85.
Write Example
Parameter 46; Motor FLC — The value which is to be written to the
SMC is 75 A. Since this value has one decimal place, the value should be
multiplied by 10. The correctly written value is 750.
Display Text Unit Equivalents
Some parameters have text descriptions when viewed from a HIM or
through a communication software program such as RSNetworxÔ. When
receiving or sending information from a PLC each text description has a
numerical equivalent. Table 8.I has an example of Parameter 44, Overload
Class, and the appropriate relationship between the text descriptor and the
equivalent value. This relationship is identical for other similar parameters
located in Appendix B.
Table 8.I
Text Descriptor Numerical Equivalent
Disabled 0
Class 10 1
Class 15 2
Class 20 3
Class 30 4
Scale Factors for PLC
Communication