Chapter 16 PLC Function Applications│CP2000
16-112
API
LD#
S1 S2
Contact form logical operation LD#
215–
217
D
Bit device Word device
16-bit command (5 STEP)
LD# Continuous
execution type
－ －
32-bit command (9 STEP)
DLD# Continuous
execution type
－ －
Flag signal: none
X Y M K H KnX KnY KnM T C D
S1
＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
S2
＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
Notes on operand usage: ＃：&、|、^
Please refer to the function specifications table for each device in
series for the range of device usage
S
1
: data source device 1. S
2
: data source device 2.
This command performs comparison of the content of S
1
and S
2
; when the result
of comparison is not 0, this command will be activated, but this command will not
be activated when the result of comparison is 0.
The LD#This command can be used while directly connected with the busbar
API No.
16-bit
commands
32-bit
commands
Conditions for
activation
Conditions for inactivation
215 LD& DLD&
S
1
&
S
2
0
S
1
&
S
2
0
216 LD| DLD|
S
1
|
S
2
0
S
1
|
S
2
0
217 LD^ DLD^
S
1
^
S
2
0
S
1
^
S
2
0
&: logical AND operation.
|: logical OR operation.
^: logical XOR operation.
When the content of C0 and C10 is subjected to the logical AND operation, and
the result is not equal to 0, Y10=On.
When the content of D200 and D300 is subjected to the logical OR operation, and
the result is not equal to 0, and X1=On, Y11=On and remains in that state.
LD
C0 C10
LD
D200 D300
SET
X1
&
I
Y11
Y10
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