Preface
MicroLogix 1000 Programmable Controllers User Manual
9–2
Instruction
Mnemonic Name
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
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