Fnc 44 - Bon / Check Specified Bit Status - Mitsubishi FX3U Series Programming Manual

FX /FX Series Programmable Controllers
3U 3UC
Programming Manual - Basic & Applied Instruction Edition
12.5 FNC 44 – BON / Check Specified Bit Status
Outline
This instruction checks whether a specified bit position in a specified device is ON or OFF.
1. Instruction format
FNC 44
D BON
2. Set data
Operand type
S
S
1
D
n
3. Applicable devices
Bit Devices
Oper-
System User
and
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
S S
1
S D
2
n
: "D .b" cannot be indexed with index registers (V and Z).
Explanation of function and operation
1. 16-bit operation (BON and BONP)
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
format.
Command
input
b15 b14 b13
1 0
K15 K14 K13
304
Mnemonic
16-bit Instruction
P
7 steps BON
BONP
Word device number storing the source data
Bit device number to be driven
Bit position to be checked
[n: 0 to 15 (16-bit instruction), 0 to 31 (32-bit instruction)]
Digit Specification
D D is set to ON. When the bit "n" is OFF,
1
FNC 44
S D
BON
S
b12 b11 b10 b9 b8
1 0 0 0 0 1
K12 K11 K10 K9 K8 K7
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
D S is output to D D .
1 1
, it is automatically converted into the binary
D S
1
n S
(n = K0 to K15)
b7 b6 b5 b4 b3 b2
0 1 0 0 1 1
K6 K5 K4 K3 K2
12 Data Operation – FNC 40 to FNC 49
12.5 FNC 44 – BON / Check Specified Bit Status
Mnemonic
32-bit Instruction
DBON
13 steps
DBONP
Con- Real
Index
stant Number
V Z Modify K H
D D is set to OFF.]
1
D
= ON/OFF status of bit "n"
b1 b0
1 1
← n
K1 K0
bit device
D
n = 5
0 (OFF)
n = 8
1 (ON)
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Data type
16- or 32-bit binary
16- or 32-bit binary
16- or 32-bit binary
Others
Charac-
Pointer
ter String
E " " P