Outline
Performs Start operation by comparing two word data in the comparative
conditions. The contact goes ON/OFF depending on the result of the
comparison.
Program example
■
Operands
■
Explanation of example
• Compares the contents of data register DT0 with the constant K50. If DT0 = K50, the external output relay Y0
goes ON.
Timer/Counter
EV
Relay
SV
WR
WY
WX
Operand
S1
A
A
A
A
A:
N/A: Not Available
Register
DT
A
IY
IX
A
A
H
K
A
A
Constant
Index
modifier
A
Index
register
Available
A
S2
A
A
A
A
A
A
A
A
A
A
A
S1
S2
16-bit equivalent constant 16-bit area to be compared
16-bit equivalent constant or 16-bit area to be compared
Ladder Diagram
FP Programmer
II
key operations
Boolean Non-ladder
Address Instruction
0
Y0
=, DT0, K50
S2
S1
ST
X-WX
ENT
NOT
DT/Ld
ENT
0
(BIN)
K/H
0
WRT
OT
L-WL
AN
Y-WY
0
WRT
5
C
=
0
5
ST =
DT
0
K
50
OT Y
0
Availability
Step
5
5
5
5
5
5
C24, C40, C56, and
C72 series
CPU version 2.7 or
later
(
)
ST =
Word compare: Start equal
ST <>
Word compare: Start equal not
Word compare: Start smaller
Word compare: Start larger
ST >=
Word compare: Start equal or larger
ST <
ST <=
Word compare: Start equal or smaller
5-3. Description of Basic Instructions
127
ST >
Summary of Contents for FP1
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