Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 163)

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 163
Detail Drive Configuration and Operation Chapter 1
result of the multiply function can be used in the receiving drive, or transmitted
directly to another drive.
Parameter 1030 [SL Mult A In] contains the value received from SynchLink after
it was divided by [SL Mult Base].
Parameter 1031 [SL Mult B In] contains the multiply scale factor to multiply by
the value received from SynchLink. Note that [SL Mult B In] could be a constant
or linked to a source parameter.
Parameter 1032 [SL Mult Base] contains the base to convert integer data received
from SynchLink back to floating-point data. Usually, [SL Mult Base] will be set
the same in the transmitting and receiving drive.
Parameter 1033 [SL Mult Out] contains the result of the multiply block. A
destination parameter can be linked to [SL Mult Out].
Parameter 1034 [SL Mult State] contains overflow bits if the data for the
multiply block is too large. It is broken down into the following bits:
• Bit 0 - “Local Ovflow” - The result of the multiply function is too large.
• Bit 1 - “Rx Ovflow” - The data received from SynchLink is too large.
• Bit 2 - Not used
• Bit 3 - “FtoI Ovflow” - In the transmitting drive, the data converted from
floating point to integer is too large.
For example, to receive the S-curved speed reference from the master and scale it
by 0.5, set parameter 1011 [SL Rx DirectSel 0] to “SL Multiply.” Set parameter
1031 [SL Mult B In] to 0.5. Set parameter 1032 [SL Mult Base] to 10,000. Link
parameter 37 [Spd Ref Bypass] equal to parameter 1033 [SL Mult Out].
Buffered Data
Buffered Data Transmit Parameters
Parameter 1160 [Tx Buf Data Type], bits 0 through 29, select whether each word
of buffered data that is transmitted is integer or floating-point. Data is
transmitted as integer when a bit is turned off. Data is transmitted as floating-
point when a bit is turned on.
Odd parameters 1161 [SL Buf Int Tx00] through 1219 [SL Buf Int Tx29] are
linked to integer parameters that you want to send out over SynchLink as
buffered data. Note that at this time, the maximum number of buffered words
that can be sent over SynchLink is 18, so only odd parameters 1161 [SL Buf Int
Tx00] through 1195 [SL Buf Int Tx17] would be used.
Even parameters 1162 [SL Buf Real Tx00] through 1220 [SL Buf Real Tx29] are
linked to floating-point parameters that you want to send out over SynchLink as
buffered data. Note that at this time, the maximum number of buffered words
that can be sent over SynchLink is 18, so only odd parameters 1162 [SL Buf Real
Tx00] through 1196 [SL Buf Real Tx17] would be used.