Preface
MicroLogix 1000 Programmable Controllers User Manual
C–6
Instruction
Valid Value
Ranges
Valid File Types
Valid Addressing
Mode(s)
Instruction
Parameters
Description
FFL
FIFO Load
source
direct, indexed direct
➀
O, I, S, B, T, C, R, N
–32,768–32,767
FIFO array
indexed direct
O, I, S, B, N
Not Applicable
FIFO control
direct
R (element level)
Not Applicable
length
(contained in the
control register)
1–128
position
(contained in the
control register)
0–127
FFU
FIFO Unload
FIFO array
indexed direct
O, I, S, B, N
Not Applicable
destination
direct, indexed direct
➀
O, I, S, B, T, C, R, N
Not Applicable
FIFO control
direct
R (element level)
Not Applicable
length
(contained in the
control register)
1–128
position
(contained in the
control register)
0–127
FLL
Fill File
source
direct
O, I, S, B, T, C, R, N
–32,768–32,767
f-min–f-max
destination
indexed direct
O, I, S, B, T, C, R, N
(element level)
Not Applicable
length
immediate
1–128; 1–42
when destination
is T,C,R
FRD
Convert from BCD
source
direct, indexed direct
O, I, S, B, T, C, R, N
Not Applicable
destination
direct, indexed direct
O, I, S, B, T, C, R, N
Not Applicable
GEQ
Greater Than or Equal
source A
direct, indexed direct
O, I, S, B, T, C, R, N
Not Applicable
source B
immediate, direct,
indexed direct
O, I, S, B, T, C, R, N
–32,768–32,767
f-min–f-max
GRT
Greater Than
source A
direct, indexed direct
O, I, S, B, T, C, R, N
Not Applicable
source B
immediate, direct,
indexed direct
O, I, S, B, T, C, R, N
–32,768–32,767
f-min–f-max
➀
Indexed addressing is not allowed when using T, C, or R addresses.
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