AutomationDirect DL205 - Page 487

DL205 User Manual, 4th Edition, Rev. D
5-263
Chapter 5: Standard RLL Instructions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
Real to BCD with Implied Decimal Point and Rounding (RTOBCD) (IB-561)
Real to BCD with Implied Decimal Point and Rounding converts the absolute value of the
given Real number to a 4-digit BCD number, compensating for an implied number of decimal
points (K0-K4) and performs rounding.
For example, RTOBCD R56.74 with an implied number of decimal points equal to K1, would
yield 567 BCD. If the implied number of decimal points was 0, then the function would yield
57 BCD (note that it rounded up).
If the Real number is negative, the Result will equal its positive, absolute value.
RTOBCD Parameters
• Value (DWORD Real): specifies the Real
Dword location or number that will be
converted and rounded to a BCD number
with decimal points
• Number of Decimal Points: specifies the
number of implied decimal points in the
Result WORD
• Result (WORD BCD): specifies the location
where the rounded/implied decimal points
BCD value will be placed
RTOBCD Example
In the following example, the RTOBCD instruction is used to convert the 32-bit REAL
(floating point) data format in V3000 and V3001 to the 4-digit BCD data format and store in
V2000 when C100 turns on.
K2 in the Number of Decimal Points implies the data will have two implied decimal points.
Parameter DL205 Range
Value (DWORD Real) ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ V,P,R R ; See DL205 V-memory map - Data Words
Number of Decimal Points ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ K K0-4
Result (WORD BCD) ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ V See DL205 V-memory map - Data Words
DS5 Used
HPP
N/A




230
240
250-1
260