Publication 1766-RM001A-EN-P - October 2008
262
Move Instructions
•
Valid constants are -32,768…32,767 (word) and
-2,147,483,648…2,147,483,647 (long word).
Addressing Modes and File Types can be used as shown in the following
table:
Updates to Math Status Bits
After a MOV instruction is executed, the arithmetic status bits in the status
file are updated. The arithmetic status bits are in word 0, bits 0 to 3 in the
processor status file (S2).
MOV Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 92.
Parameter
Data Files
Function Files
(1)
CS - Com
m
s
IOS - I/O
DLS
-
D
a
ta
L
o
g
Address
Mode
(2)
Address Level
O
I
S
B
T,
C
, R
N
F
ST
L
MG, P
D
RI/RIX
PLS
RTC
HSC
PTOX, PW
MX
STI
EII
BH
I
MMI
LCD
Immedia
te
Dir
e
c
t
Indir
e
ct
Bit
Wo
rd
Long W
o
rd
Ele
m
ent
Source
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Destination
•
•
•
•
•
•
•
•
•
•
•
(3)
•
•
•
•
(1) PTOX and PWMX files are valid for MicroLogix 1400 BXB or BXBA unit.
(2) See Important note about indirect addressing.
(3) Some elements can be written to. Consult the function file for details.
IMPORTANT
You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,
PWMX, STI, EII, BHI, MMI, CS, IOS, and DLS files.
Math Status Bits
With this Bit:
The Controller:
S:0/0
Carry
always resets
S:0/1
Overflow
sets when an overflow, infinity, or NAN (not a number)
condition is detected, otherwise resets
S:0/2
Zero Bit
sets if result is zero, otherwise resets
S:0/3
Sign Bit
sets if result is negative (MSB is set), otherwise resets
S:5/0
Math Overflow Trap
Bit
(1)
(1) Control bit.
sets Math Overflow Trap minor error if the Overflow bit is set,
otherwise it remains in last state
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