338
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.3 FNC 42 – ENCO / Encode
2) When is a word device (1 ≤ n ≤ 4)
ON bit positions among "2
n
" bits (1 ≤ n ≤ 4) from a device specified in are encoded to .
- The encoding result of is "0" (OFF) from the most significant bit to the low-order bit "n".
Cautions
1. When two or more bits are ON in the data
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.
D
1
S
D
1
S
D
1
D
D
1
D
Command
input
FNC 42
ENCO
nS
D
When it is T, C, D, R, U
\G
, V or Z
(1
≤
n
≤
4)
0001000010101010
b15
All of these bits are 0.
b0
1100000000000000
b15 (1)(2)4
b0
012(3)456
7
Ignored
S
D
2
n
= 8 (When "n" is 3)
D0
D2
D
1
S
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