Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 150)

Preface MicroLogix 1000 Programmable Controllers User Manual
9–2
Instruction
Purpose Page
Mnemonic Name
Purpose Page
MOV Move Moves the source value to the destination. 9–15
MVM Masked Move Moves data from a source location to a selected
portion of the destination. 9–16
AND And Performs a bitwise AND operation. 9–18
OR Or Performs a bitwise inclusive OR operation. 9–19
XOR Exclusive Or Performs a bitwise Exclusive OR operation. 9–20
NOT Not Performs a NOT operation. 9–21
NEG Negate Changes the sign of the source and stores it in the
destination. 9–22
FFL and
FFU FIFO Load and
FIFO Unload The FFL instruction loads a word into a FIFO stack
on successive false-to-true transitions. The FFU
unloads a word from the stack on successive false-
true transitions. The first word loaded is the first to
be unloaded. 9–25
LFL and
LFU LIFO Load and
LIFO Unload The LFL instruction loads a word into a LIFO stack
on successive false-to-true transitions. The LFU
unloads a word from the stack on successive false-
to-true transitions. The last word loaded is the first
to be unloaded. 9–26
About the Data Handling Instructions
Use these instructions to convert information, manipulate data in the controller, and
perform logic operations.
In this chapter you will find a general overview preceding groups of instructions.
Before you learn about the instructions in each of these groups, we suggest that you
read the overview. This chapter contains the following overviews:
•
Move and Logical Instructions Overview
•
FIFO and LIFO Instructions Overview