Allen-Bradley SMC-50, User Manual

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Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019 141
Communications Chapter 7
Table 51 - Logic Command Word (Control)
Reference/Feedback
The SMC-50 control module does not offer the analog Reference feature. The
analog Feedback feature is supported and provides Current Average, Parameter
5, automatically as the feedback word.
Parameter Information
A complete listing of the SMC-50 parameters is located in Appendix A on
page 199 .
Scale Factors for PLC
Communication
The parameter values stored and produced by the SMC-50 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
Power Factor, Parameter 17— The stored value is 85. Because this value has two
decimal places, the value should be divided by 100. The correctly read value is
0.85.
Write Example
Motor FLC, Parameter 78— The example value, which is to be written to the
SMC-50 control module, is 75 A. Because this value has one decimal place, the
value should be multiplied by 10. The correctly written value is 750.
Bit
Number
Control
Description
1 0
0 Stop Coast/Inhibit No action
1 Start Start No action
2 Stop Option Stop/Maneuver No action
3 Clear Fault Clear fault No action
5 Emergency Run Enable emergency run mode Disable emergency run mode
8…10 Reserved These bits must always be set to 0
11 Aux Enable Use the Network #1 - #4 bits Ignore the Network #1 - #4 bits
12 Network #1 Closes any output configured for
Network #1
Opens any output configured for
Network #1
13 Network #2 Closes any output configured for
Network #2
Opens any output configured for
Network #2
14 Network #3 Closes any output configured for
Network #3
Opens any output configured for
Network #3
15 Network #4 Closes any output configured for
Network #4
Opens any output configured for
Network #4