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7 OPERATION CONTROL PROGRAMS
F/FS G
7.7.3 Signed 32-bit integer value conversion : LONG
Format LONG(S) Number of basic steps 2
[Usable data]
Usable Data
Word device Constant
Setting
data
Bit device
16-bit
integer
type
32-bit
integer
type (L)
64-bit
floating
point
type (F)
Coasting
timer
16-bit
integer
type (K/H)
32-bit
integer type
(K/H, L)
64-bit
floating
point
type (K)
Calculation
expression
Bit
conditional
expression
Comparison
conditional
expression
(S) —
— —
: Usable
[Setting data]
Setting data Description Data type of result
(S)
Data which will be converted into signed 32-bit
integer value
32-bit integer type
[Functions]
(1) The data specified with (S) is converted into a signed 32-bit integer value.
(2) The data range of (S) is -2147483648 to 2147483647.
(3) When (S) is a 64-bit floating-point type, its fractional portion is rounded down
before conversion is made.
(4) If (S) is a 32-bit integer type, its value is returned unchanged, with no conversion
processing performed.
[Errors]
(1) An operation error will occur if:
• The (S) data is outside the range -2147483648 to 2147483647; or
• (S) is an indirectly specified device and its device No. is outside the range.
[Program examples]
(1) Program which converts the data of D0 into a signed 32-bit integer value and
substitutes the result to #0L
#0L = LONG(D0)
#1
K-1L
#0
(HFFFFFFFF)
D0
K-1
(HFFFF)