IDEC MICROSmart FC6A Series Ladder Programming Manual page 160

7: B A
INARY RITHMETIC
Valid Devices
Device
S1 (Source 1)
S2 (Source 2)
D1 (Destination 1)
For valid device address ranges, see "Device Addresses" on page 2-1.
Special internal relays cannot be designated as D1.
When T (timer) or C (counter) is used as S1 or S2, the timer/counter current value (TC or CC) is displayed. When T (timer) or C (counter) is used as
D1, the data is written in as a preset value (TP or CP) which can be 0 through 65,535.
When F (float) data is selected, only data register and constant can be designated as S1 and S2.
When F (float) data is selected and S1 or S2 does not comply with the normal floating-point format, a user program execution error will result,
turning on special internal relay M8004 and ERR LED on the FC6A Series MICROSmart. For user program execution errors, see "User Program
Execution Errors" on page 3-10.
P (index register) can be used when ADD, SUB, or MUL is programmed with the data type L (long).
Since the binary arithmetic instructions are executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction should be used.
Valid Data Types
W (word) X
I (integer) X
D (double word) X
L (long) X
F (float) X
Using Carry or Borrow Signals
When the D1 (destination) data exceeds the valid data range as a result of any binary arithmetic operation, a carry or borrow
occurs, and special internal relay M8003 is turned on.
Data Type
W (word)
I (integer)
D (double word)
L (long)
F (float)
7-2
I
NSTRUCTIONS
Function
Data for calculation
Data for calculation
Destination to store results
When a bit device such as I (input), Q (output), M (internal relay), or R (shift register) is assigned as the source,
16 points (word or integer data) or 32 points (double-word, long, or float data) are used. When repeat is
assigned for a bit device, the quantity of device bits increases in 16- or 32-point increments.
When a word device such as T (timer), C (counter), or D (data register) is assigned as the source, 1 point (word
or integer data) or 2 points (double-word, long, or float data) are used. When repeat is assigned for a word
device, the quantity of device words increases in 1- or 2-point increments.
Carry/borrow Occurs when D1 Exceeds the Range between
FC6A S MICROS
ERIES MART
I Q M
X X X
X X X
— X
0 and 65,535
–32,768 and 32,767
0 and 4,294,967,295
–2,147,483,648 and 2,147,483,647
38
–3.402823×10 and –1.175495×10
–38
1.175495×10 and 3.402823×10
L P M
ADDER ROGRAMMING ANUAL
R T C D P Constant
X X X X X
X X X X X
X X X X X
–38
38
FC9Y-B1726
Repeat
X 1-99
X 1-99
— 1-99