Eaton ELC-PB, Programming Manual

Page: 475 / 728

E L C P r o g r a m m i n g M a n u a l
F o r m o r e i n f o r m a t i o n v i s i t : w w w. e a t o n . c o m M N 0 5 0 0 3 0 0 3 E
3 - 3 0 6
API Mnemonic Operands Function
123 D EDIV P S
1
, S
2
, D Floating Point Division
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 *
DEADD, DEADDP: 13
steps
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
S
1
: Dividend S
2
: Divisor D : Quotient and Remainder
Description:
1. S
1
÷
S
2
=
D . The floating point value in the registers specified by S
1
is divided by the floating
point value in the registers specified by S
2
and the result is stored in the registers specified by
D . All data will be operated in floating point format and the result will be also stored in floating
point format.
2. If the source operands S
1
or S
2
are a constant K or H, the integer value will automatically be
converted to binary floating point to perform the division operation.
3. If S
2
is 0 (zero), the operation will fail and will result in an “operand error” and the instruction
will not be executed.
4. Flags: M1020 Zero flag, M1021 Borrow flag and M1022 Carry flag
If the absolute value of the result is larger than the maximum floating point value, the carry flag
M1022= ON.
If absolute value of the results is less than the minimum floating point value, the borrow flag
M1021= ON.
If the conversion result is 0, zero flag M1020= ON.
Program Example 1:
When X1= ON, the binary floating point value in D1/D0 is divided by the binary floating point value in
D11/D10 and the result is stored in D21/D20.
D0
DEDIV
X1
D10 D20
Program Example 2:
When X2= ON, the binary floating point value in D1/D) is divided by K1234 (automatically converted
to binary floating point) and the result is stored in D1/D10.
D0 DEDIV
X2
K1234 D10