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4 OPERATION CONTROL PROGRAMS
4.13 Comparison Operations
4.13 Comparison Operations
Equal to: ==
■Usable Data
: Usable
■Description, data type of result
• The data specified with (S1) and the data specified with (S2) are compared, and the result is true if they are equal.
• When (S1) and (S2) differ in data type, the data of the smaller data type is converted into that of the greater type before
comparison is performed.
An operation error will occur if:
• (S1) or (S2) is an indirectly specified device and its device No. is outside the range.
■Program which compares whether #0 and D0 are equal or not
Format Number of basic steps Usable steps
F/FS G
(S1)==(S2) 7
Setting
data
Usable Data
Bit
device
Word device Constant Calculation
expression
Bit
conditional
expression
Comparison
conditional
expression
16-bit
integer
type
32-bit
integer
type (L)
64-bit
floating
point
type (F)
16-bit
integer
type
(K/H)
32-bit
integer
type
(K/H, L)
64-bit
floating
point
type (K)
(S1)
(S2)
Setting data Description Data type of result
(S1) Data which will be compared Logical type (true/false)
(S2)
#0 == D0
100
==
100
(True)
#0
D0