Chapter 14 PLC Function
|
C200 Series
14-56
API
215~
217
D
LD#
S1
S2
Contact Logical Operation LD#
Bit Devices
Word Devices
X Y M K H KnX
KnY KnM T
C
D
S
1
*
*
*
*
*
*
*
*
S
2
*
*
*
*
*
*
*
*
Operands:
#
: &, |, ^
Please refer to the specifications of each model for the
range of operands.
16-bit command (5 STEPS)
LD#
ZRSTP
32-bit command (9 STEPS)
DLD#
-
-
-
Flag signal: none
Explanation
1.
S
1
: Data source device 1
S
2
: Data source device 2
2. This instruction compares the content in
S
1
and
S
2
. If the result is not “0”, the
continuity of the instruction is enabled. If the result is “0”, the continuity of the
instruction is disabled.
3. LD# (
#:
&, |, ^) instruction is used for direct connection with BUS.
API No.
16 -bit
instruction
32 -bit
instruction
Continuity condition
No-continuity
condition
215 LD&
D
LD&
S
1
&
S
2
≠
0
S
1
&
S
2
=
0
216 LD|
D
LD|
S
1
|
S
2
≠
0
S
1
|
S
2
=
0
217 LD^
D
LD^
S
1
^
S
2
≠
0
S
1
^
S
2
=
0
4.
&:
Logical “AND” operation
5.
|:
Logical “OR” operation
6.
^:
Logical “XOR” operation
Example
1. When the result of logical AND operation of C0 and C10
≠
0, Y10 = On.
2. When the result of logical OR operation of D200 and D300
≠
0 and X1 = On,
Y11 = On will be retained.
LD
C0
C10
LD
D200
D300
SET
X1
&
I
Y11
Y10
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