Mitsubishi Electric MELSEC iQ-F Series - Page 10

1 BASICS OF A PROGRAMMABLE CONTROLLER
1.2 Program
1 - 5
1
Program processing sequence
A CPU module executes operations in series from the start step of the program memory from left to right and from top to
bottom (in the order of 1), 2) ... and 17)) in units of a ladder block as shown below.
0
3
7
17
1)
X0
2)
X1
5)
X3
4)
X2
6)
X4
8)
X5
9)
X6
11)
X7
13)
X8
15)
X9
16)
XA
3)
Y11
Y12
Y13
Y14
Y15
Y10
7)
10)
12)
14)
17)