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EJ1

MELSEC-Q/QnA/QnAS Series

Note: 1. Refer to the Mitsubishi Electric PLC documentation for information on MELSEC PLCs.

2. More than one EJ1 Controller to one PLC is not possible even with RS-422 communications. Refer to Connecting EJ1 Controllers 1:N

to a PLC, below, for product combinations that support 1:N connections.

3. Connection ability has been verified for the above MELSEC models. Design changes and other factors, however, may prevent normal

connection. Always confirm operation in advance.

MELSEC-An/AnS Series

Note: Use a MELSEC-AnA/AnU CPU.

MELSEC-FX3UC Series

Connecting EJ1 Controllers 1:N to a PLC

The combinations of PLCs and HFUs that can be connected 1:N are listed below.

CS/CJ/CP/NJ Series

*1. Only the CJ1W-SCU@2 Serial Communications Unit can be used to connect to an NJ-series Controller.

*2. Use only products manufactured on or after December 20, 1999.

For details, refer to the CS/CJ Series, Serial Communications Boards/Units Operation Manual (Cat. No. W336).

MELSEC-Q/QnA/QnAS Series

Note: Refer to the Mitsubishi Electric PLC documentation for information on MELSEC PLCs.

Name

Model No.

Communications ports

Channel 1

Channel 2

Q-compatible Serial Communications Unit

QJ71C24N

QJ71C24

RS-232C

RS-422/485

QJ71C24N-R2

QJ71C24-R2

RS-232C

RS-232C

QJ71C24N-R4

RS-422/485

RS-422/485

QnA-compatible Serial

Communications Unit

AJ71QC24N

RS-232C

RS-422/485

AJ71QC24N-R2

RS-232C

RS-232C

AJ71QC24N-R4

RS-422

RS-422/485

QnAS-compatible Serial

Communications Unit

A1SJ71QC24N

RS-232C

RS-422/485

A1SJ71QC24N-R2

RS-232C

RS-232C

Name

Model No.

Communications ports

An-compatible Computer Link Unit

AJ71UC24

RS-232C or RS-422/485

AnS-compatible Computer Link Unit

A1SJ71UC24-R2

RS-232C

A1SJ71UC24-R4

RS-422/485

A1SJ71UC24-PRF

RS-232C

Name

Model No.

Communications ports

Communications Adapter

FX3U-232ADP

RS-232C

FX3U-485ADP

RS-485

Function Board

FX3U-232-BD

RS-232C

FX3U-485-BD

RS-485

Name

Model No.

Communications ports

Serial Communications Units

*1

CJ1W-SCU31-V1

Port 1 or 2

CJ1W-SCU41-V1

Port 1

CS1W-SCU31-V1

Port 1 or 2

Serial Communications Board

CS1W-SCB41-V1

*2Port 2

Serial Option Board

(when CJ2M-CPU3

@ is used)

CP1W-CIF12-V1

CP1W-CIF11

RS-422A/485 can be used by adding an Option Board.

CPU Units

CP Series

RS-422A/485 can be used by adding an Option Board.

EJ1N-HFU

EJ1N-HFUA-NFLK

EJ1N-HFUB-NFLK

Port C

Name

Model No.

Serial Communications Units

Channel 2 of QJ71C24N

QJ71C24N-R4

Channel 2 of A1SJ71QC24N

Channel 2 of AJ71QC24N

AJ71QC24N-R4

EJ1N-HFU

EJ1N-HFUA-NFL2

EJ1N-HFUB-NFL2

V1.1

V1.1

V1.1