Chapter 16 PLC Function ApplicationsMS300 
748 
 
Contact form logical operation LD# 
Continuous 
execution type 
Continuous 
execution type 
Notes on operand usage:  #,:, &, |, ^ 
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 compares the contents of S
1
 and S
2
. When the result of 
comparison is not 0, this command activates; when the result of comparison is 
0, this command does not activate.   
  You can use the LD# command directly to connect with the busbar   
Conditions for 
Activation 
Conditions for   
Inactivation 
&: logical AND operation.   
|: logical OR operation.   
^: logical XOR operation.     
  When you compare the contents of C0 and C10 with the logical AND operation, 
and the result is not equal to 0, then Y10 = ON.   
  When you compare the content of D200 and D300 with the logical OR operation, 
and the result is not equal to 0, and X1 = ON, then Y11 = ON and remains in that 
state.   
LD
C0 C10
LD
D200 D300
SET
X1
&
I
Y11
Y10