Chapter 6 Instruction Details
XBC E-Type Main Unit
6-308
Ver. 1
6.45 Bit Control Instruction in Word Area
6.45.1 Bit of Word (B, BN)
Instruction
Area Available
Step
Flag
P M K
F
L
T
C
S
Z D.x R.x
Con
st
U
N
D
R
Error
(F110)
Zero
(F111)
Carry
(F112)
x
Operators
S
O O O
O O O
-
O
-
-
-
O O O O
2
-
-
-
n
O O O O O O O
-
O
-
-
O O O O O
x
Operators
Name
Condition
Operation
result
Condition
Operation
result
B
Bit of Word
Bit = 1
On
Bit = 0
Off
BN
Inverse Bit of Word
Bit = 0
On
Bit = 1
Off
Operand
Description
Data Size
S
Word area of the relevant device
WORD
n
n
th
bit in Word area
WORD
*Note: Compare instruction must be used in Input (Contact) Position of ladder rung. This instruction uses 3
contact points.
1) LOAD
x
(B, BN)
a) Ladder Structure: “B” takes the n
th
bit of Word. If it is 1, coil CR1 will be On. “BN” takes nth bit reversed
value. If n
th
bit is 1, result will be 0, and coil CR1 will be Off. Both functions take only the lower 4 bits of
“n” value to decide bit position. No error will be given when “n” value exceeds the Word’s range.
b) Example: If bit 4 of D00001 is 1, P0001D will be On.
c)
Example: If bit 5 of D00001 is 0, P0001E will be ON.
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
n
th
bit
Input Positions
Output
Position
x
S
n
LOAD
x
Coil
CR1
Summary of Contents for XBC-DN10E
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