Slc Ladder Logic Example - Main Program - Allen-Bradley PowerFlex 20-COMM-P FRN 1 Series User Manual

Logic Command/Status Words
These examples use the Logic Command word and Logic Status word
for PowerFlex 70 and PowerFlex 700 drives. Refer to
Logic Command/Status Words
the bits in these words may vary if you are using a different DPI Host
product. Refer to the documentation for your Host product.

SLC Ladder Logic Example - Main Program

Figure 5.4 Example SLC Ladder Logic - Main Program
This example program is for a PROFIBUS demonstration using a SLC 5/05 processor with an SST Profibus scanner
(SST-PFB-SLC) in the first slot of the rack. The program is written for (2) drives on the network:
Station 1 PowerFlex 70 Tabletop demo with 20-COMM-P
Station 2 PowerFlex 70 Tabletop demo with 20-COMM-P
The example program demonstrates using Logic Command / Reference, Logic Status / Feedback, Datalinks, and Parameter
Access using the Parameter Protocol.
On power-up, zero out the transmit buffer to the Scanner.
First Pass
S:1
0000
15
Automatically have the SST-PFB-SLC scanner's watchdog period track that of the SLC processor (recommended per SST user
manual)
0001
The Scanner is configured for 28 bytes (14 words) of inputs for each drive. Two drives require 48 bytes (28 words).
Read the drives data from the Profibus scanner.
0002
Using I/O Messaging
for more information. The definition of
5-9
Appendix C,
FLL FLL
Fill File
Source 0
Dest #N20:0
Length 28
SST Scanner
Write Data
Word 0
MOV MOV
Move
Source S:3
2562 <
Dest M0:1.4011
?<
SST Scanner
Read Data
Word #0
COP COP
Copy File
Source #M1:1.0
Dest #N9:0
Length 28