Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 40)

40 Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013
Chapter 1 Detail Drive Configuration and Operation
The feedback is also scaled so that base motor speed = 32768. The SLC/PLC-5
does not use DINT, and only handles 16 bit integers, so the feedback has to be
handled differently to account for references above 32767 or below -32768. The
following example shows how to read feedback values less than twice base motor
speed.
Datalink Programming
Datalinks are transmitted and received through block transfer I/O. The SLC/
PLC-5 is limited to 16 bit integers and floating point. Because the SLC/PLC-5
does not support 32-bit integers, 32-bit integer datalinks remain split into two,
16 bit integers. In order to send or receive floating-point datalinks the LSW and
MSW must be swapped and the COP (copy) instruction must be utilized. The
following examples are for transmitting and receiving the floating-point
Datalinks.