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Preface – Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers User Manual

Page 320

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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 direct➀

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 direct➀

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

Indexed addressing is not allowed when using T, C, or R addresses.