Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 134)

Chapter 8
Using Basic Instructions
8–15
Entering the Instructions
The following items apply when entering the instructions:
•
Whenever you see asterisks on the display, the HHP is waiting for data
entry (i.e., a number).
•
If you see a down arrow on the display it means there are more options
available. To scroll through the options, press this key:
•
You can return to previously entered operands by pressing this key:
Then if you want to edit that operand, press DEL or FUN-DEL and enter
new parameters. Press ENT to accept the operand and move on to the next
one. If you want to edit the instruction’s parameters once the entire
instruction is entered, you must go into the overwrite mode. (See page
17–4.)
Addressing Structure
Address bits and words using the format shown below.
Format Explanation
T Timer file
e
Element
number Ranges from 0 – 39. These are 3-word elements.
See figure on previous page.
Te.s/b . Subelement delimiter T . /b
s Subelement PRE or ACC
/ Bit delimiter
b Bit number
Addressing Examples
•
T0/EN Enable bit
•
T0/TT Timer timing bit
•
T0/DN Done bit
•
T0.PRE Preset value of the timer
•
T0.ACC Accumulator value of the timer
•
T0.PRE/0 Bit 0 of the preset value
•
T0.ACC/0 Bit 0 of the accumulator value