Mitsubishi Electric MELSEC FX3U Programming Manual page 345

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. 32-bit operation (DBON and DBONP)
The status (ON or OFF) of the bit "n" in [
[When the bit "n" is ON,
• When a constant (K) is specified as the transfer source [
the binary format.
Command
input
FNC 44
DBON
...
b31 b30 b29
...
1 0 1
...
K31 K30 K29
Caution
• Note that the 32-bit value [n+1, n] is valid when D or R is specified as "n" in a 32-bit instruction.
In the case of "DBON D0 M0 R0", "n" is [R1, R0].
Program example
When the bit 9 (n = 9) in D10 is "1" (ON), M0 is set to "1" (ON).
X000
FNC 44
BON
1 0 1 0 1 0
b15
0 0 1 0 1 0
b15
D S
1
D D is set to ON. When the bit "n" is OFF,
1
S D
n
(n = K0 to K31)
S
b17 b16 b15 b14 b13 b12
1 1 1 0 1 0
K17 K16 K15 K14 K13 K12
S D
n
D 10 M 0 K 9
D 10
1 0 1 0 1 0 1 0 1 0
b8 b7 b0
n = 9
0 0 0 0 1 0 1 0 1 0
b0
n = 9
12.5 FNC 44 – BON / Check Specified Bit Status
+1, D S ] is output to D D
1 1
D D
D S +1, D S
1 1
[ +1, ]
S S
+1, S
b11 b10 b9 b8 b7 b6 b5
0 0 0 1 0 1
K11 K10 K9 K8 K7 K6 K5
n = 29
M 0 = ON
M 0 = OFF
12 Data Operation – FNC 40 to FNC 49
.
is set to OFF.]
1
], it is automatically converted into
= ON/OFF status of bit "n"
D
b4 b3 b2 b1 b0
0 0 1 1 1 1
← n
K4 K3 K2 K1 K0
D bit device
n = 5
0 (OFF)
1 (ON)
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