Delta DVP-15MC Series, Operation Manual

Page: 426 / 972

Chapter 8 Logic Instructions
8-339
8_
FB/FC
Explanation Applicable model
FC
GetBitOffsetValue is used to read the value of the specific bit of the
specified address and display it in the output parameter. DVP15MC11T
DVP15MC11T-06
GetBitOffsetValue
StartRegister GetBitOffsetValue
Offset
EN E NO

Parameters
Parameter name Meaning Input/ Output Description Valid range
StartRegister Starting address Input
Specify the starting
address
Offset
How many bits
are offset
Input
Specify the offset value by
regarding the bit0 of the
variable that
StartRegister
points to as the reference
0~1023
GetBitOffsetValue
The read bit
value
Output The read bit value TRUE / FALSE
B
oo
le
an
Bit string Integer
Real
number
Time, date
P
oi
nt
er
B
OOL
BYT
E
WO
R
D
DW
O
RD
LW
O
R
D
US
INT
UI
NT
UDI
NT
UL
INT
SI
N
T
IN
T DI
NT
LI
N
T
R
EA
L
L
R
E
AL
T
IME
D
AT
E
T
O
D
DT
P
oi
nt
er
T
o
X
X
StartR
egister
●
Offset
● ●
GetBit
Offset
Value
●
Note:
1. The symbol
●
indicates that the parameter is allowed to connect to the variable or constant of the
data type.
2. xx of the ‘Pointer To xx’ data type includes Bit string and Integer data types.

Function Explanation
The GetBitOffsetValue instruction is used to read the value of the specified bit and the output
GetBitOffsetValue shows the read state value. The StartRegister parameter is a Pointer-type variable. The
Offset parameter specifies the offset value which regards the bit0 of the variable the StartRegister parameter
points to as the reference. The GetBitOffsetValue parameter shows the state value of the specified bit, which
is TRUE or FALSE.
If the specified offset value exceeds the range of the starting address of
StartRegister , the operation will be
performed according to the corresponding offset address which regards the StartRegister as the starting
address.
See more in the following example.