Rockwell Automation 22-COMM-P PowerFlex Profibus Adapter - Manual (Page 97)

SLC Ladder Logic Examples D-9
Figure D.4 Main Routine
Multi Drive Example
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 3 drives with one Profibus adapter on the network
(MultiDrive Mode):
Station 0 PowerFlex 40 with 22--COMM-P
Station 1 PowerFlex 40
Station 2 PowerFlex 40
The expample program demonstrates using Logic Command / Reference, Logic Status / Feedback and Parameter
Access using the Parameter Protocol.
On power-up, zero out the transmit buffer to the Scanner.
0
S:1
15
First Pass
FLL
Fill File
Source
0
Dest #N20:0
Length 10
FLL
1
MOV
Move
Source
S:3
2561<
Dest M0:1.4011
?<
MOV
The Scanner is configured to 20 bytes (10 words) of inputs: 4 Bytes "Ctrl/Stat & Ref Fdbk" for each drive (= 12 Bytes)
8 Bytes "Parameter Access"
Read the drives data from the Profibus scanner.
File N10: contains the acutal read data that can be used elsewhere in the ladder program.
Address Description
M1:1.0 (N10:0) Logic Status Drive 0
M1:1.1 (N10:1) Speed Feedback Drive 0
M1:1.2 (N10:2)
Logic Status Drive 1
M1:1.3 (N10:3) Speed Feedback Drive 1
M1:1.4 (N10:4)
Logic Status Drive 2
M1:1.5 (N10:5) Speed Feedback Drive 2
M1:1.6 (N10:6) Parameter Access Word 1 (PCA)
M1:1.7 (N10:7) Parameter Access Word 2 (IND)
M1:1.8 (N10:8) Parameter Access Word 3 (PVA 1)
M1:1.9 (N10:9) Parameter Access Word 4 (PVA 2)
2
COP
Copy File
Source
#M1:1.0
Dest #N10:0
Length 10
COP
Execute LAD 3 - Station 0 Drive Logic
3
JSR
Jump To Subroutine
SBR File Number
U:3
JSR
Execute LAD 4 - Station 1 Drive Logic
4
JSR
Jump To Subroutine
SBR File Number
U:4
JSR
Automatically have the SST-PFB-SCL scanner's watchdog period track that of the
SCL processor (recommended per SST user manual)