Allen-Bradley PowerFlex 20-COMM-P FRN 1 Series User Manual page 60

5-10 Using I/O Messaging
Figure 5.4 Example SLC Ladder Logic - Main Program (Continued)
Profibus scanners vary from manufacturer to manufacturer in how the bytes are ordered in a word. For example, some Profibus
scanners operate with high & low bytes swapped (the value "1234" is represented as "3412"). The READ data is copied into
N10: and the bytes are reversed in the SWP instruction below so a value such as "3412" is viewed as "1234".
0003
File N10: contains the actual read data that can be used elsewhere in the ladder program.
Station 1
M1:1.0
M1:1.1
M1:1.2
M1:1.3
M1:1.4
M1:1.5
M1:1.6
M1:1.7
M1:1.8
M1:1.9
M1:1.10
M1:1.11
M1:1.12
M1:1.13
0004
Execute LAD 3 - Station 1 Drive Logic
0005
For Ladder 3 Station 1 Drive Logic, see
- Station 1 Program.
For Ladder 4 Station 2 Drive Logic, see
- Station 2 Program.
Station 2
(N10:0) M1:1.14
(N10:1) M1:1.15
(N10:2) M1:1.16
(N10:3) M1:1.17
(N10:4) M1:1.18
(N10:5) M1:1.19
(N10:6) M1:1.20
(N10:7) M1:1.21
(N10:8) M1:1.22
(N10:9) M1:1.23
(N10:10) M1:1.24
(N10:11) M1:1.25
(N10:12) M1:1.26
(N10:13) M1:1.27
Description
(N10:14) Logic Status
(N10:15) Speed Feedback
(N10:16) Datalink A1
(N10:17) Datalink A2
(N10:18) Datalink B1
(N10:19) Datalink B2
(N10:20) Datalink C1
(N10:21) Datalink C2
(N10:22) Datalink D1
(N10:23) Datalink D2
(N10:24) Parameter Protocol Word #1
(N10:25) Parameter Protocol Word #2
(N10:26) Parameter Protocol Word #3
(N10:27) Parameter Protocol Word #4
Jump To Subroutine
SBR File Number
Figure 5.4 Example SLC Ladder
Figure 5.6 Example SLC Ladder
Station 1
Logic Status
COP COP
Copy File
Source #N9:0
Dest #N10:0
Length 28
Station 1
Logic Status
SWP SWP
Swap
Source #N10:0
Length 28
JSR JSR
U:3