Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 142)

Chapter 8
Using Basic Instructions
8–23
Addressing Structure
Address bits and words using the format shown below.
Format Explanation
C Counter file
e
Element
number Ranges from 0 – 39. These are 3-word elements.
See figure on page 8–21.
Ce.s/b . Subelement delimiter C . /b
s Subelement PRE or ACC
/ Bit delimiter
b Bit number
Important: If assigned to a high-speed counter instruction, C0 is not
available as an address for any other counter instructions. For
more information on high-speed counter instructions, see
chapter 14.
Addressing Examples
•
C0/CU Count up enable bit
•
C0/CD Count down enable bit
•
C0/DN Done bit
•
C0/OV Overflow bit
•
C0/UN Underflow bit
•
C0/UA Update accumulator bit
•
C0.PRE Preset value of the counter
•
C0.ACC Accumulator value of the counter
•
C0.PRE/0 Bit 0 of the preset value
•
C0.ACC/0 Bit 0 of the accumulated value