2 Standard Functions
2 - 56
NX-series Safety Control Unit Instructions Reference Manual (Z931)
ADD
This function adds integers or durations.
If you omit an input or output parameter, a building error will occur.
An error will not occur if the output terminal is not used or if it is connected to an input terminal on the
next instruction.
This function adds integers or durations, and outputs the result to output value
Out
.
An overflow occurs if the sum of
In1
to
InN
exceeds the valid range of the data type of the addition
result. If an overflow occurs, the data types of
In1
to
InN
, the data type of the addition result, and the
value of the addition result will be as shown in the following table.
Instruction
Name
FB/FUN
Graphic expression
ADD
Addition
FUN
Variables
Name
I/O
Description
Valid range
Default
In1 to InN
Values to add
Input
Values to add
Depends on data type.
---
Out
Output value
Output
Output value
Depends on data type.
---
Boolean
Bit strings
Integers
Durations
BOOL
SAFEBOOL
BYTE
SAFEBYTE
WO
RD
SAFEWORD
DWORD
SAFEDWORD
INT
SAFEINT
DINT
SAFEDINT
TI
ME
SAFETIME
In1 to InN
OK
OK
OK
OK
OK
OK
Out
OK
OK
OK
OK
OK
OK
Function
I/O data types
Value of addition results
Integers
Of the sum of
In1
to
InN
, the addition result will be the value that can be expressed by the
number of bits in the data type of the addition result.
*1*2
*1. For example, if the value of
In1
is INT#32767 and the value of
In2
is INT#3, the addition result will be 32770.
If an INT variable is set for the output, the value of the addition result will be the value that can be expressed
with lower 16 bits of the sum (32,770), i.e.,
−
32,766. If a DINT variable is set for the output, the addition result
is DINT#32770.
*2. If the result exceeds the valid range of DINT data, the result will be the value that can be expressed with the
lower 32 bits.
Durations
Of the sum of
In1
to
InN
, the addition result will be the value that can be expressed with
DWORD data.
*3
*3. For example, if the value of
In1
is TIME#49d17h2m47s295ms and the value of
In2
is TIME#5ms, the value of
the addition result is TIME#49d17h2m47s30ms. However, the maximum value of TIME is the same as for
DWORD (4294967295), so the addition result will be the value that can be expressed with 32 bits, i.e.,
TIME#4ms.
ADD
Summary of Contents for NX-SL series
Page 8: ...CONTENTS 6 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 28: ...Sections in this Manual 26 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 98: ...2 Standard Functions 2 64 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 104: ...2 Standard Functions 2 70 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 110: ...2 Standard Functions 2 76 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 265: ...I 1 I NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
Page 268: ...I 4 NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
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