Mitsubishi MELSEC iQ-F FX5 series User Manual

17 ARITHMETIC OPERATION FUNCTIONS
17.1 Addition
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17 ARITHMETIC OPERATION FUNCTIONS
17.1 Addition
ADD(_E)
These functions output the sum of input values ((s1) + (s2) + ... + (s28)).
*1 The input variable "s" can be changed in the range of 2 to 28.
Setting data
■Descriptions, types, and data types
Processing details
■Operation processing
• These functions add the INT, DINT, or REAL type data ((s1) + (s2) + ... + (s28)) input to (s1) to (s28), and output from (d) in
the same data type as (s).
Ex.
Data type is the INT type
• A value input to (s1) to (s28) is the INT, DINT, or REAL type data value.
• If an underflow and an overflow occur in the operation result, the result will be output as follows from (d).
• When the operation result is 0, the zero flag (SM8020) turns on.
Ladder diagram
*1
Structured text
*1
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=ADD(s1,s2);
[With EN/ENO]
d:=ADD_E(EN,ENO,s1,s2);
Argument Description Type Data type
EN Execution condition (TRUE: Execution, FALSE: Stop) Input variable BOOL
s1 to s28 Input Input variable ANY_NUM
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable ANY_NUM
Data type is INT Data type is DINT Data type is REAL
• Even if underflow or overflow occurs in the
operation result, it is not regarded as an
operation error. "ADD_E" outputs "TRUE" from
ENO.
[Example 1]
32767+2=1
(7FFFH)+(0002H)=0001H
The most significant bit becomes 0, and the carry
flags (SM716 and SM8022) turn on.
[Example 2]
-32768+(-2)=-1
(8000H)+(FFFEH)=(FFFFH)
The most significant bit becomes 1, and the borrow
flag (SM8021) turns on.
• Even if underflow or overflow occurs in the
operation result, it is not regarded as an
operation error. "ADD_E" outputs "TRUE" from
ENO.
[Example 1]
2147483647+2=1
(7FFFFFFFH)+(0002H)=(00000001H)
The most significant bit becomes 1, and the carry
flags (SM716 and SM8022) turn on.
[Example 2]
-2147483648+(-2)=-1
(80000000H)+(FFFEH)=(7FFFFFFFH)
The most significant bit becomes 1, and the borrow
flag (SM8021) turns on.
An operation error occurs and an undefined value
is output.
s1 d
s2
EN ENO
ds1
s2
INT
1234
INT
5678
INT
6912
(s1)
(s2)
(d)

Mitsubishi MELSEC iQ-F FX5 series Specifications

General

Brand	Mitsubishi
Model	MELSEC iQ-F FX5 series
Category	Controller
Language	English