Toshiba PROSEC T1-16S User Manual page 146

7. Instructions
FUN 028
Expression
Input [ A B C ]
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
OFF No execution
ON Execution (normal)
Execution (overflow or underflow occurred)
Operand
Name
X
A Minuend
B Subtrahend
C Difference
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
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
Constant 2500
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T1-16S User's Manual
Subtraction
Output
Operation
Device
Y R S T. C. XW YW RW SW T
Underflow
Output
OFF
OFF
ON
Register
C D
RW50 12500
RW50 -32768
6F3B0253
Constant Index
I J K
R010 is OFF
R010 is ON