Name: Mitsubishi FX3U Series
Brand: Mitsubishi
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FX3U Series Programmable Controllers

User’s Manual - Hardware Edition

443

A Operation of Special Devices (M8000 -, D8000 -)

A-1 Special Auxiliary Relay (M8000 to M8511)

Memory

Cassette

Battery

Special Devices

(M8000-,D8000-)

Instruction List

Character-code

Discontinued

models

Parallel Link

M 8070

Parallel link Set M8070 when

using master station.

–

M 8071

Parallel link Set M8071 when

using slave station.

–

[M]8072 Parallel link ON when operating –

[M]8073

Parallel link

ON when M8070 or M8071 setting

is incorrect

–

*1. Cleared when PLC switches from STOP to RUN.

Sampling Trace

[M]8074 Not used –

[M]8075 Ready request for sampling trace

D8075 to

D8098

[M]8076 Start request for sampling trace

[M]8077 ON during sampling trace

[M]8078

ON when sampling trace is

completed

[M]8079 Sampling trace system area

[M]8080

Not used

–

[M]8081 –

[M]8082 –

[M]8083 –

[M]8084 –

[M]8085 –

[M]8086 –

[M]8087 –

[M]8088 –

[M]8089 –

Flag

[M]8090

BKCMP (FNC194 to FNC199)

instructions - Block comparison

signal

–

M 8091

COMRD (FNC182) and BINDA

(FNC261) instructions - Output

character quantity selector signal

–

[M]8092

Not used

–

[M]8093 –

[M]8094 –

[M]8095 –

[M]8096 –

[M]8097 –

[M]8098 –

High Speed Ring Counter

M 8099

High speed ring counter operation

(in units of 0.1ms, 16 bits)

D8099

[M]8100 Not used –

*2. 0.1ms high speed ring counter D8099 will operate after

M8099 turns ON.

Number and

name

Operation and function

Correspond-

ing special

device

Memory Information

[M]8101

Not used

–

[M]8102 –

[M]8103 –

[M]8104 –

[M]8105 ON when writing to flash memory –

[M]8106 Not used –

[M]8107 Device comment registration check D8107

[M]8108 Not used –

Output Refresh Error

[M]8109 Output refresh error –

[M]8110

Not used

–

[M]8111 –

M 8112 –

M 8113 –

M 8114 –

M 8115 –

M 8116 –

M 8117 –

[M]8118 –

[M]8119 –

RS (FNC 80) and Computer Link [ch1]

[M]8120 Not used –

[M]8121

RS (FNC 80) instruction:

Send wait flag

–

M 8122

RS (FNC 80) instruction:

Send request

D8122

M 8123

RS (FNC 80) instruction:

Receive complete flag

D8123

[M]8124

RS (FNC 80) instruction:

Carrier detection flag

–

[M]8125 Not used –

[M]8126 Computer link [ch1]: Global ON

D8127

D8128

D8129

[M]8127

Computer link [ch1]:

On-demand send processing

M 8128

Computer link [ch1]:

On-demand error flag

M 8129

Computer link [ch1]:

On-demand Word/Byte changeover

RS (FNC 80) instruction:

Time-out check flag

*3. Cleared when PLC switches from RUN to STOP or RS

instruction is OFF.

Number and

name

Operation and function

Correspond-

ing special

device

Other manuals for Mitsubishi FX3U Series

Programming Manual944 pages

Hardware Manual8 pages

Installation Manual3 pages

Operation Manual106 pages

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Mitsubishi FX3U Series Specifications

General

Model	FX3U Series
Program Memory	64k steps
Execution Speed	0.065 μs/basic instruction
Type	PLC (Programmable Logic Controller)
Power Supply	100-240V AC
I/O Points	Up to 384
Communication	USB
Expansion	Supported via expansion modules
High-Speed Counters	Up to 6 channels
Analog Input/Output	Available via expansion modules
Temperature Range	0 to 55°C
Programming Language	Ladder Logic, Structured Text
Built-in Functions	PID control
Humidity	5 to 95% (non-condensing)