Subtraction - Mitsubishi Electric R16MTCPU Programming Manual

Subtraction: -

Format
(S1)-(S2)
Setting data
■Usable data
: Usable
Setting Usable Data
data
Bit
device

(S1)
(S2) 
■Description, data type of result
Setting data
(S1)
(S2)
Processing details
• The data specified with (S2) is subtracted from the data specified with (S1).
• When (S1) and (S2) differ in data type, the data of the smaller data type is converted into that of the greater type before
operation is performed.
Operation error
An operation error will occur if:
• (S1) or (S2) is an indirectly specified device and its device No. is outside the range.
Program example
■Program which substitutes the result of subtracting #0 from K123 to W0
W0 = K123 - #0
W0 -333
■Program which substitutes the result of subtracting #10 from #0F to D0L
D0L = #0F - #10
D1 D0
D0L 12222
The 64-bit floating-point type data are used for subtraction, and the result is converted into the 32-bit integer type and then
substituted.
4 OPERATION CONTROL PROGRAMS
134
4.5 Binary Operations
Number of basic steps
7
Word device
16-bit 32-bit 64-bit
integer integer floating
type type (L) point
type (F)
  
  
Description
Minuend data
Subtracted data
12222.789
Usable steps
F/FS

Constant
16-bit 32-bit 64-bit
integer integer floating
type type point
(K/H) (K/H, L) type (K)
  
  
123
-
#0 456
#3 #2 #1
#0F 12345.789
-
#10 123
G

Calculation Bit
expression conditional
expression
 
 
Data type of result
Data type of (S1) or (S2) which is greater
#0
Comparison
conditional
expression

