Delta DVP-15MC Series, Operation Manual

Page: 262 / 972

Chapter 8 Logic Instructions
8-175
8_

Real Number to Integer

Real numbers can be converted to integers. And some instructions are shown below.

For the real number-to-integer conversion, there are two cases in which the fractional part is
truncated and rounded up as follows.
Case 1: If the first digital number of the fractional part is less than 5, the fractional part will be
truncated and the integer part will not change.
Case 2: If the first digital number of the fractional part is greater than or equal to 5, the
fractional part will be truncated and the integer part will add by 1.
Input value
Output result
Data type Output value
Case 1
1.36
SINT 1
USINT 1
-2.4
SINT -2
USINT 254
Case 2
1.6
SINT 2
USINT 2
-2.6
SINT -3
USINT 253
Note:
For the Real Number-to-Integer Conversion, there are two cases for the value of a real
number.
1. If the number of input digits of a real number exceeds what is allowed, the result will be an
unsure value. Please set a limit in the user program in order to get a correct value.
For example: Then the input value is 123456789 and the number of its digits exceeds the set
limit 7. The digits which go beyond the limit are abnormal. Then the output value is
1234567
92 .
2. If the number of input digits does not exceed the set limit, the result is calculated based on
the conversion rule.

Real Number to Bit string

Real numbers can be converted to bit strings. And some instructions are shown below.
The rule for the conversion of real numbers into bit strings is the same as that for the
conversion of real numbers into unsigned integers.
REAL_ TO _SINT
EN ENO
O ut In
REA L_TO _USI NT
EN ENO
O ut In
LREA L_TO_DINT
EN ENO
O ut In
L RE AL_TO_L INT
EN ENO
O ut In
RE AL_TO_B YTE
EN ENO
O ut In
REAL_ TO_ WORD
EN ENO
O ut In
L RE AL_TO_DWO RD
EN ENO
O ut In
LREAL _TO _LWO RD
EN ENO
O ut In