Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 207)

Chapter 11
Using Data Handling Instructions
11–24
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).
•
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. Once the entire instruction is entered, if you want to edit the
instruction’s parameters, you must go into the overwrite mode. (See page
17–4.)
Effects on Index Register S24
The value present in S24 is overwritten with the position value when a
false-to-true transition of the FFL/FFU or LFL/LFU rung occurs. For the
FFL/LFL, the position value determined at instruction entry is placed in S24.
For the FFU/LFU, the position value determined at instruction exit is placed
in S24.
When the DN bit is set, a false-to-true transition of the FFL/LFL rung does
not change the position value or the index register value. When the EM bit is
set, a false-to-true transition of the FFU/LFU rung does not change the
position value or the index register value.