8 Application Instructions API 100-149
DVP-PLC Application Manual
8-23
API Mnemonic
Operands
Function
110
D ECMP P
Floating Point Compare
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices
Word Devices
Program Steps
Type
OP
X Y M S K H
KnX KnY KnM KnS T
C
D
E
F
S
1
*
*
*
S
2
*
*
*
D
*
*
*
DECMP, DECMPP: 13 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
S
1
: Binary floating point comparison value 1
S
2
: Binary floating point comparison value 2
D
: Comparison
result
Explanations:
1.
D
occupies 3 consecutive devices.
2. See the specifications of each model for their range of use.
3. The binary floating point values
S
1
and
S
2
are compared with each other. The comparison result (>, =, <) is
stored in
D
.
4. If
S
1
or
S
2
is an designated constant K or H, the instruction will convert the constant into a binary floating point
value before the comparison.
Program Example:
1. Designated device M10 and M10 ~ M12 are automatically occupied.
2. When X0 = On. DECMP instruction will be executed and one of M10 ~ M12 will be On. When X0 = Off, DECMP
instruction will not be executed and M10 ~ M12 will remain their status before X0 = Off.
3. To obtain results , ,
≠
≧ ≦
, serial-parallel M10 ~ M12.
4. Use RST or ZRST instruction to clear the result.
X0
DECMP
D0
D100
M10
M10
M11
M12
On when (D1,D0)>(D101,D100)
On when (D1,D0)=(D101,D100)
On when (D1,D0)<(D101,D100)
Remarks:
For floating point operations, see “5.3 Handling of Numeric Values”.
Содержание DVP-PLC
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