Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations - Manual (Page 211)

Glossary
Appendix B
BĆ18
3-Digit Address
This identifies a specific 16-bit word in the first 51210 words (000 thru 777) of
an Allen-Bradley PC data table.
4-Digit Address
This identifies a specific 16-bit word in the second 512 words (address 1000
thru 1777) of an Allen-Bradley PC data table. it also identifies a byte.
5-Digit Address
This identifies a specific bit in an Allen-Bradley PC data table. it also identifies
an I/O terminal directly related to an image table bit. It also identifies a byte.
5-Digit Code
The user-programmed address in any Allen-Bradley PC instruction which can
monitor or control a single data table bit. Whenever a 5-digit code refers to a
5-digit address in an image table, it also identifies the corresponding terminal
address on a specific I/O module.
7-Segment Display
A device which can exhibit alphanumeric characters. The individual segments
can be enabled in various combinations to display all decimal numerals (0 thru
9) as well as many alphabetical characters. Several displays may be combined
to exhibit multi-digit numbers.
8-Bit Word
This word size is used by certain PCs of limited capability. However,
Allen-Bradley PCs use 16-bit words which provide a more powerful instruction
set and greater memory capacity.
16-Bit Word
The number of bits in one word.