Chapter 16 PLC Function ApplicationsMS300
751
Continuous
execution type
Continuous
execution type
Notes on operand usage: ※,:, =, >, <, <>, ≤, ≥
Refer to the function specifications table for each device in series
for the scope 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
. Taking API 224 (LD=) as an
example, this command activates when the result of comparison is "equal," and
does not activate when the result is "unequal."
You can use the LD* directly to connect with the busbar
Conditions for
Activation
Conditions for
Inactivation
When the content of C10 is equal to K200, then Y10 = ON.
When the content of D200 is greater than K-30, and X1 = ON, then Y11 = ON
and remains in that state.
When C20 < K678493 or MI = ON, then MI50 = ON.
LD=
K200 C10
DLD>
K678493 C20
M3
Y10
LD>
D200 K-30 SET Y11
M50
X1