IDEC microsmart pentra, Programming Manual

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FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382 8-1
8: B
INARY
A
RITHMETIC
I
NSTRUCTIONS
Introduction
The binary arithmetic instructions make it possible for the user to program computations using addition, subtraction,
multiplication, and division. For addition and subtraction devices, internal relay M8003 is used to carry or to borrow.
The ROOT instruction can be used to calculate the square root of the value stored in one or two data registers.
ADD (Addition)
SUB (Subtraction)
MUL (Multiplication)
DIV (Division)
Data type W or I: S1 + S2  D1, CY
Data type D, L, or F: S1·S1+1 + S2·S2+1  D1·D1+1, CY
When imnput is on, 16- or 32-bit data designated by source devices S1 and S2
are added. The result is set to destination device D1 and carry (M8003).
REP
**
S1(R)
*****
D1(R)
*****
ADD(*) S2(R)
*****
Data type W or I: S1 – S2  D1, BW
Data type D, L, or F: S1·S1+1 – S2·S2+1  D1·D1+1, BW
When input is on, 16- or 32-bit data designated by source device S2 is
subtracted from 16- or 32-bit data designated by source device S1. The result
is set to destination device D1 and borrow (M8003).
REP
**
S1(R)
*****
D1(R)
*****
SUB(*) S2(R)
*****
Data type W or I: S1  S2  D1·D1+1
Data type D, L, or F: S1·S1+1  S2·S2+1  D1·D1+1
When input is on, 16- or 32-bit data designated by source device S1 is
multiplied by 16- or 32-bit data designated by source device S2. The result is
set to destination device D1.
When the result exceeds the valid range for data types D or L, the ERR LED
and special internal relay M8004 (user program execution error) are turned on.
REP
**
S1(R)
*****
D1(R)
*****
MUL(*) S2(R)
*****
Data type W or I: S1 ÷ S2  D1 (quotient), D1+1 (remainder)
Data type D or L:
S1·S1+1 ÷ S2·S2+1  D1·D1+1 (quotient), 
D1+2·D1+3 (remainder)
Data type F:
S1·S1+1 ÷ S2·S2+1  D1·D1+1 (quotient)
When input is on, 16- or 32-bit data designated by source device S1 is divided
by 16- or 32-bit data designated by source device S2. The quotient is set to
16- or 32-bit destination device D1, and the remainder is set to the next 16- or
32-bit data. Data type F does not generate a remainder.
When S2 is 0 (dividing by 0), the ERR LED and special internal relay M8004
(user program execution error) are turned on.
A user program execution error also occurs in the following division
operations.
Data type I: –32768 ÷ (–1)
Data type L: –2147483648 ÷ (–1)
REP
**
S1(R)
*****
D1(R)
*****
DIV(*) S2(R)
*****