IDEC microsmart pentra, Руководство по программированию

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8: B
INARY
A
RITHMETIC
I
NSTRUCTIONS
8-2 FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382
Applicable CPU Modules
Valid Devices
For the valid device address range, see pages 6-1 and 6-2 (Basic Vol.).
Internal relays M0 through M1277 can be designated as D1. 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 read out. 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 65535.
When F (float) data type is selected, only data register and constant can be designated as S1 and S2.
When F (float) data type 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 CPU module. For user program execution errors, see Chapter 4 “User Program
Execution Errors” on page 4-21.
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
as required.
Valid Data Types
Using Carry or Borrow Signals
When the D1 (destination) data is out of 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.
FT1A-12 FT1A-24 FT1A-40 FT1A-48 FT1A-Touch
X X X X X
Device Function I Q M R T C D Constant Repeat
S1 (Source 1) Data for calculation X X X X X X X X 1-99
S2 (Source 2) Data for calculation X X X X X X X X 1-99
D1 (Destination 1) Destination to store results — X X X X X — 1-99
W (word) X When a bit device such as I (input), Q (output), M (internal relay), or R (shift register) is designated as the
source, 16 points (word or integer data type) or 32 points (double-word, long, or float data type) are used. When
repeat is designated 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 designated as the source, 1 point
(word or integer data type) or 2 points (double-word, long, or float data type) are used. When repeat is
designated for a word device, the quantity of device words increases in 1- or 2-point increments.
I (integer) X
D (double word) X
L (long) X
F (float) X
Data Type Carry/borrow occurs when D1 is out of the range between
W (word) 0 and 65,535
I (integer) –32,768 and 32,767
D (double word) 0 and 4,294,967,295
L (long) –2,147,483,648 and 2,147,483,647
F (float)
–3.402823  10
38
and –1.175495  10
–38
1.175495  10
–38
and 3.402823  10
38