Allen-Bradley PLC-2/30

Data Manipulation Instructions
Chapter 6
619
BINARY
ADDR – 125
DATA – 111111111111
BCD
ADDR – The BCD number is stored in adjacent data table words 200
and 201
DATA – The industrial terminal will display 004095, the BCD
equivalent of the binary value for this example.
Figure 6.19
BinarytoBCD
Conversion Format
BINARY T O BCD
BINARY
ADDR: 010
DATA: 000000000000
BCD
ADDR: 110- 111
DATA: 000000
010
(OV)
14
Numbers shown are default values. Bold numbers must be replaced by userentered values. The number of default address digits initially
displayed  3, 4, or 5  will depend on the size of the data table. Initially displayed default values are governed by the I/O rack configura 
tion.
BINAR
Y ADDR : Stores the binary number .
BINAR
Y DA TA : The 12 bits of the binary number .
BCD ADDR : Address where the first three digits of the BCD number are stored. The second threedigit address is where the
three leastsignificant BCD digits are stored.
BCD DA TA : The BCD number that is equivalent to the 12 bits of the binary data block.
OV : Overflow bit. Set high when binary number is > 12 ones or a decimal equivalent of 004095. It is in a word where
the binary word is to be stored.
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