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
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