Rockwell Automation 160PD1 160 Profibus Communication Module - Manual (Page 38)

6–12 Using the 160-PD1 on Profibus
SLC Ladder Logic Example (continued)
Once the bytes have been swapped, the control and status words can
be manipulated as per normal.
Note: If your scanner does not order the MSB first, LSB second, but
the other way around, then the program above can be omitted.