Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 49)

Scan Theory
Chapter 5
5Ć2
Figure 5.1
Scan Sequence
11597
Output
Image
Table
Input
Terminals
Input
Image
Table
Output
Terminals
Copy output image table status
into output terminal circuits.
Copy input terminal status into
input image table
Program Statement
Execute each program rung in
sequence, writing into bits in the
data table, including the output
image table.
I/O
Scan
Program
Scan