Delta DVP-SS2 User Manual

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-416
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
122 D EMUL P Floating point multiplication
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
DEMUL, DEMULP: 13
steps
S
1
*
*
*
S
2
*
*
*
D
*
PULSE
16-bit
32-bit
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
Operands:
S
1
: Multiplicand S
2
: Multiplicator D: Multiplication result
Explanations:
1. S
1
× S
2
= D. The floating point value in S
1
is multiplied with the floating point value in S
2
and the
result is D. The multiplication is conducted in binary floating point format
2. If S
1
or S
2
is designated as constant K or H, the instruction will convert the constant into a binary
floating point value before the operation
3. S
1
and S
2
can designate the same register. In this case, if the instruction is specified as
“continuous execution instruction” (generally DEMULP instruction) and the drive contact is ON,
the register will be multiplied once in every scan.
4. Flags: M1020 (Zero flag), M1021 (Borrow flag) and M1022 (Carry flag)
If absolute value of the result exceeds max. floating point value, carry flag M1022 = ON.
If absolute value of the result is less than min. floating point value, borrow flag M1021 = ON.
If the conversion result is 0, zero flag M1020 = ON.
Program Example 1:
When X1 = ON, binary floating point (D1, D0) multiplies binary floating point (D11, D10) and the
result is stored in (D21, D20).
D0DEMUL
X1
D10 D20
Program Example 2:
When X2 = ON, K1234 (automatically converted into binary floating point value) multiplies binary
floating point (D1, D0) and the result is stored in (D11, D10).
K1234
DEMUL
X2
D0 D10

Delta DVP-SS2 Specifications

General

Brand	Delta
Model	DVP-SS2
Category	Controller
Language	English