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T1/T1S User’s Manual
7. Instructions
FUN 028
-
Subtraction
Expression
Input
-
[
A
-
B
®
C
]
-
Output
Function
When the input is ON, the data of
B is subtracted from the data of A, and the result is stored in C.
If the result is greater than 32767, the upper limit value 32767 is stored in
C, and the output is turned
ON. If the result is smaller than -32768, the lower limit value -32768 is stored in
C, and the output is
turned ON.
Execution condition
Input
Operation
Output
OFF
No execution
OFF
ON
Execution (normal)
OFF
Execution (overflow or underflow occurred)
ON
Operand
Name
Device
Register
Constant Index
X
Y
R
S
T.
C. XW YW RW SW
T
C
D
I
J
K
A
Minuend
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
B
Subtrahend
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
C
Difference
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Example
When R005 is ON, the constant data 2500 is subtracted from the data of D0200, and the result is
stored in RW50.
If the data of D0200 is 15000, the result 12500 is stored in RW50, and R010 is turned OFF.
D0200
15000
-
RW50
12500
R010 is OFF
Constant
2500
If the data of D0200 is -31000, the result is smaller than the limit value, therefore -32768 is stored
in RW50, and R010 is turned ON.
D0100
-31000
Underflow
-
RW50
-32768
R010 is ON
Constant
2500
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