Mitsubishi Electric MELSEC FX3U Programming Manual page 340

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2) When D S
1
ON bit positions among "2
- The encoding result of
Command
input
Cautions
1. When two or more bits are ON in the
The low-order side is ignored, and only the ON position on the high-order side is encoded.
2. While the command input is OFF
The instruction is not executed. Activated encode outputs are latched in the previous ON/OFF status.
338
is a word device (1 ≤ n ≤ 4)
n
" bits (1 ≤ n ≤ 4) from a device specified in
is "0" (OFF) from the most significant bit to the low-order bit "n".
D D
1
When it is T, C, D, R, U \G , V or Z
FNC 42
S D
ENCO
(1 ≤ n ≤ 4)
b15
0 1 0 1 0
Ignored
b15
0 0 0 0 0
All of these bits are 0.
n
D0
2 n = 8 (When "n" is 3)
1 0 1 0 0 0 0 1
6 5 4 (3)
7
0 0 0 0 0 0 0 0
D2
data
D S
1
12 Data Operation – FNC 40 to FNC 49
12.3 FNC 42 – ENCO / Encode
are encoded to
D S
1
b0
0 0 0 S
2 1 0
4 (2) (1)
0 1 1 D
b0
.
D D
1