Blocks S5-115F Manual
6.1 Integral Function Blocks
Integral function blocks can be divided into separate groups according to function.
6.1.1 Conversion Blocks
Use blocks FB 240 and FB 241 to convert numbers in BCD code to fixed-point binary numbers and
vice versa.
Code Converter: B4 -FB 240-
Use function block FB 240 to convert a number in BCD code (four tetrads) with sign to a fixed-
point binary number (16 bits).
A two-tetrad number must be changed to a four-tetrad number before conversion by padding it
with ”0 bits”.
Call and Parameter Assignment
AssignmentData
Type
TypeParameter Meaning STL
SBCD
BINARY
I
I
Q
W
Bi
W
-9999 to+9999
”1” for ”-”
”0” for ”+”
16 bits ”0”
or ”1”
BCD number
Sign of the
BCD number
Binary number
: JU FB 240
Name : COD : B4
BCD :
SBCD :
DUAL :
BCD
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Code Converter: 16 -FB 241-
Use function block FB 241 to convert a fixed-point binary number (16 bits) to a number in BCD
code with additional consideration of the sign. An eight-bit binary number must be changed to a
16-bit word before conversion.
Call and Parameter Assignment
Parameter Type Data
Type
Assignment
DUAL
SBCD
BCD2
I
Q
Q
W
Bi
By
-32768 to+32767
”1” for ”-”
”0” for ”+”
2 tetrads
Meaning
Binary number
Sign of the BCD
number
BCD number
tedrads 4 and 5
STL
: JU FB 241
Name : COD : 16
DUAL :
SBCD :
BCD2 :
BCD1 :
BCD1 Q W
4 tetrads BCD number
tedrads 0 to 3
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6-2
EWA 4NEB 811 6149-02
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