Mitsubishi Electric MELSEC FX3U Programming Manual page 303

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. 32-bit operation (DOR and DORP)
The logical sum (OR) operation is executed to the contents of [
of bit, and the result is transferred to [
Command
input
FNC 27
DOR
• While the command input is OFF, the data of the transfer destination [
• While the command input is ON, the data of the transfer source [
change.
• When a constant (K) is specified in the transfer source [
automatically converted into the binary format.
• The logical sum operation is executed in units of bit as shown in the table below (1 ∨ 1 = 1, 0 ∨ 1 = 1,
0 ∨ 0 = 0, 1 ∨ 0 = 1).
Logical operation
(unit: bit)
+1,
D D
D
S S S
1 2
S +1, S
1 1
0
1
0
1
10 Arithmetic and Logical Operation (+, −, ×, ÷) – FNC 20 to FNC 29
10.8 FNC 27 – WOR / Logical Word OR
+1, ] and [
S S
1 1
].
S ∨ S S
+1, +1,
1 1 2 2
D
+1,
S S
1
+1, ] [
S S S
1 1
S +1, S
2 2
0
0
1
1
+1, ] in units
S S
2 2
→ D D
+1,
+1, ] does not change.
D
] [ +1, ] do not
S S
1 2 2
+1, ], it is
S
2 2
1: ON, 0: OFF
+1,
D D
DOR (FNC 27) instruction
0
1
1
1
301
1
2
3
4
5
6
7
8
9
10