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Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual User Manual

Page 141

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Data Manipulation Instructions

Chapter 6

6Ć19

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

BinaryĆtoĆBCD Conversion Format

BINARY TO 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 userĆentered values. The number of default address digits initially

displayed Ċ 3, 4, or 5 Ċ will depend on the size of the data table. Initially displayed default values are governed by the I/O rack configuraĆ

tion.

BINARY ADDR

: Stores the binary number.

BINARY DATA

: The 12 bits of the binary number.

BCD ADDR

: Address where the first three digits of the BCD number are stored. The second threeĆdigit address is where the

three leastĆsignificant BCD digits are stored.

BCD DATA

: 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.