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HEAD OFFICE

: MITSUBISHI DENKI BLDG MARUNOUTI TOKYO 100-8310

TELEX : J24532 CABLE MELCO TOKYO

HIMEJI WORKS : 840, CHIYODA CHO, HIMEJI, JAPAN

FX

2NC

-485ADP

Installation Manual

JY997D01201B

This manual contains text, diagrams and explanations which will guide the reader in the correct
installation, safe use and operation of the FX

2NC

-485ADP (hereafter abbreviated to "485ADP") and should

be read and understood before attempting to install or use the unit. Further information can be found in
the associated manuals mentioned below.
Specifications are subject to change without notice

Safety guidelines for the user and protection of the FX

2NC

-485ADP.

This manual has been written to be used by trained and competent personnel. The definition of such a
person or persons is as follows:

a) Any engineer using the product associated with this manual, should be of a competent nature,

trained and qualified to the local and national standards. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.

b) Any commissioning or service engineer must be of a competent nature, trained and qualified to

the local and national standards.

c)

All operators of the completed equipment should be trained to use that product in a safe and
coordinated manner in compliance to established safety practices.

Note:

The term ‘completed equipment’ refers to a third party constructed device which contains or uses
the product associated with this manual.

Notes on the Symbols Used in this Manual

At various times through out this manual certain symbols will be used to highlight points of information
which are intended to ensure the users personal safety and protect the integrity of equipment.

1) Indicates that the identified danger 

WILL

 cause physical and property damage.

2) Indicates that the identified danger could 

POSSIBLY

 cause physical and property

damage.

Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage
that may arise as a result of the installation or use of this equipment.

All examples and diagrams shown in this manual are intended only as an aid to understanding the
text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for the actual use of
the product based on these illustrative examples.

Please contact a Mitsubishi distributor for more information concerning applications in life critical
situations or high reliability.

Associated Manuals

PROGRAMMING MANUAL, PROGRAMMING MANUAL 

ΙΙ

, or FX COMMUNICATION USER'S MANUAL

mentioned below are not provided in sets with a product.
Contact our agent where the product was purchased to request the manuals accordingly.

Indispensable manual

Either manual is necessary.

Manual Name

Manual

Number

Description

This 

manual

FX

2NC

-485ADP INSTALLATION 

MANUAL

JY997D01201

Describes contents related to installation of the 
FX

2NC

-485ADP Module.

FX COMMUNICATION USER'S 
MANUAL

JY992D69901

Describes contents related to communication 
available in FX Series PLC such as wiring, 
communication setting, and program examples.

FX

1S

 HARDWARE MANUAL 

JY992D83901

Describes contents related to hardware of FX 
Series PLC such as specifications, wiring, and 
installation.

FX

0

/FX

0N

 HARDWARE MANUAL

JY992D47501

FX

1N

 HARDWARE MANUAL

JY992D89301

FX

2N

 HARDWARE MANUAL

JY992D66301

FX

2NC

 HARDWARE MANUAL(DSS/DS)

(D/UL)

JY992D76401
JY992D87201

PROGRAMMING MANUAL

JY992D76401

Describes contents related to instruction in FX

0

/

FX

0S

/FX

0N

/FX/FX

2

/FX

2C

 Series PLC.

PROGRAMMING MANUAL 

ΙΙ

JY992D88101

Describes contents related to instruction in FX

1S

/

FX

1N

/FX

2N

/FX

2NC

 Series PLC.

FX

1N

-CNV-BD 

Special Adapter Connection Board

JY992D84701

Describes contents related to installation of the 
each board.

FX

2N

-CNV-BD 

Special Adapter Connection Board

JY992D63601

This manual describes the installation the and specifications of the 485ADP.
For details on wiring (including use of terminal resistor and preparation of cable) with communication equipment, 
system configuration and communication setting, and program examples, refer to the "FX COMMUNICATION USER'S 
MANUAL".

1. Outline of Product

The 485ADP is an insulated RS-485 communication adapter with an European type terminal block.
Connected to the main unit of the FX Series PLC, it enables signal exchange between the PLC and
equipment via an RS-485 port.

2. Communication Functions and Applicable PLC 

(Available in indicated version or later)

3. Installation

Caution

• Use in the environments specified under the general specification in the manual. 

Do not use the product in environments with excessive or conductive dust, corrosive or
flammable gas, oily smoke, moisture or rain, excessive heat, regular impact shocks or
excessive vibration, as it may result in electrical shock, fire, malfunction, damage or
deterioration on the product.

• Make sure to shut off the power outside the product before installing or wiring it. 

Otherwise, electric shock or serious damage to the product may occur.

• Never drop wire chips or shavings into the vent slits when drilling screw holes or performing

wiring, as they may cause fire, breakdown, or malfunction.

• Securely install the 485ADP to the designated port. 

Poor connection may cause malfunction.

3.1 How to Install to FX Series PLC

Installation to FX

1S

/FX

1N

/FX

2N

Turn OFF the PLC before beginning any work.

1) Remove the panel cover from the top face of the main unit.

2) Take off the resin cover from the left side of the main unit.

3) Install the following board to the port on the main unit.

4) Fix the above board using the M3 screws supplied.

Tightening torque: 0.3 to 0.6 N·m

5) Connect the in-built cable of the 485ADP to the port on the

board from the left side.

Installation to FX

0N

/FX

2NC

Turn OFF the PLC before beginning any work.

1) Remove the cover of the port for a special adapter provided on the left side of the main unit.

2) Connect the in-built cable of the 485ADP to the port for a special adapter.

3.2 How to Install to Panel Face

Direct installation to the panel face

Directly fix to the panel face using 2 sets of a screw (M4), a spring
washer, and a flat washer in the mounting holes.
Tightening torque: 0.7 to 1.0 N·m 
For the pitch and positions of mounting screw holes, refer to the
external dimensions. 

Mounting on DIN rail

Fix the 485ADP to the DIN rail, DIN46277 (35 mm (1.38 inches) wide).

Dismounting from DIN rail

Slightly pull down the DIN rail mounting clip using a tool such as a
slotted screwdriver. Pull down the clip further, and the rail will be locked
with the clip left open.

Communication 

type

FX

0N

FX

1N

FX

1S

FX

2N

FX

2NC

Function

N:N network

V2.00

First 

product

V2.00

First 

product

Data transfer connecting up to eight FX Series PLCs.

Parallel link

V1.20

First 

product

V1.04

First 

product

Data transfer between two PLCs relationship specifying 
master/slave station.

Computer link

V1.20

First 

product

V1.06

First 

product

Data transfer via link protocol between PLC and 
computer (specified as the master station).

No protocol 
communication

V1.20

First 

product

V1.06

First 

product

Serial communication without protocol between PLC 
and equipment via RS-485 interface.

Inverter 
communication

V3.00

V3.00

Controlling Mitsubishi's FREQROL inverter using 
EXTR instruction in function expansion memory.

Board name

Corresponding model

FX

1N

-CNV-BD

FX

1N

, FX

1S

FX

2N

-CNV-BD

FX

2N

X

1

X3

Y

1

Y0

Y

2

1)

4)

5)

3)

2)

Installation to 

FX

1S

/FX

1N

/FX

2N

(FX

2N

 in the 

 diagram)

1)

2)

Installation to 

FX

0N

/FX

2NC

(FX

2NC

 in the 

 diagram)

FX

2NC

-

485ADP

Screws

FX Series PLC

RDA

RDB

SDA

SDB

SG

FX

2NC

-

485ADP

FX Series 

PLC

DIN rail

Detach

To lock the tab

RDA

RDB

SDA

SDB

SG

RDA

RDB

SDA

SDB

SG

4. Product Specification

4.1 Specification

All other specifications than the followings are equivalent to those of the FX Series PLC main unit.

4.2 Outside Dimensions and Part Names

1) Mounting hole 2- 

φ

4.2 (0.17)

Used when mounting the 485ADP directly.
Not used when mounting the DIN rail.

2) POWER LED

Lit while 5V DC power is supplied from main
unit.

3) RD LED

Lit while receiving data from connected
equipment via RS-485 port.

4) SD LED

L i t   w h i l e   s e n d i n g   d a t a   t o   c o n n e c t e d
equipment via RS-485 port.

5) Cable 

Used to connect to the main unit.

6) Terminal block for connecting RS-485

equipment (European type)
Used to connect RS-485 equipment to
485ADP. 

7) DIN rail mounting clip

8) DIN rail mounting slot

4.3 Terminal configuration and recommended screwdriver

The terminal configuration of the RS-485 port on the 485ADP is as shown below.

Item

Specification

General 
specification

Withstand voltage

500 V AC, 1 min (between terminal block and FX Series PLC main unit) 

Insulation 
resistance

5 M

 or more, 500 V DC by Megger (between terminal block and FX Series 

PLC main unit)

Power supply 
specification

Power supply 
voltage, current

5 V DC (supplied from PLC main unit), max. 150 mA

Performance 
specification

Transmission 
standard

Conforming to RS-485/RS-422

Type of isolation

Photo-coupler isolation

Transmission 
distance

Total extension distance: 500 m or less
(50 m or less if FX

2N

-485-BD or FX

1N

-485-BD is installed in connected 

equipment)

Connection method

European type terminal block, AWG 26-16 (when inserting one twisted pair 
cable), AWG 26-20 (when inserting two twisted pair cables)
Tightening torque: 0.4 to 0.5 N·m

Number of 
occupied I/O points

0 point (unrelated to maximum number of controlled points of the PLC) 

Communication 
method

Half-duplex

Baud rate

N:N network: 384000 bps, Parallel link: 19200bps
Computer link, No protocol: 300/600/1200/2400/4800/9600/19200 bps

Communication 
format

N:N network, Parallel link
Computer (dedicated protocol: format 1/format 4), No protocol

LED display
(LED color)

Power: green, RD: red, SD: red

Signal

name

Function

Signal direction

485ADP

RS-485

equipment

RDA (RXD+)

Receive data

RDB (RXD-)

SDA (TXD+)

Send data

SDB (TXD-)

Not used

Do not wire.

SG (GND)

Signal ground

RDA

RDB

SDA

SDB

SG

74(2.91)

4

(0.16)

 7(0.28)

(Height of screw hole)

16.1(0.63)

(to screw holes)

1)

2)

Unit: mm (inches)

19.1

(0.75)

7)

65.5(2.58) 

(between screw holes)

10

(0.39)

90(3.54)

1)

Weight:

Approx. 0.1 kg (0.22 lbs) 

Color:

Munsell 0.08GY 7.64/0.81

DIN rail width: 35 mm (1.38 inches) 

Accessories:  Terminal resistors (330 

 x 2 and 110 

 x 1), 

Station number label for linking

3)

4)

5)

6)

8)

RDA

RDB

SDA

SDB

SG

Terminal 
screws

0.6mm

(0.02")

3.5mm

(0.14")

The end

should be

straight.

Recommended screwdriver to

tighten terminal screws

Manual number : JY997D01201

Manual revision : B

Date

: AUGUST 2002

Summary of Contents for FX2NC-485ADP

Page 1: ... they may cause fire breakdown or malfunction Securely install the 485ADP to the designated port Poor connection may cause malfunction 3 1 How to Install to FX Series PLC Installation to FX1S FX1N FX2N Turn OFF the PLC before beginning any work 1 Remove the panel cover from the top face of the main unit 2 Take off the resin cover from the left side of the main unit 3 Install the following board to...

Page 2: ... they may cause fire breakdown or malfunction Securely install the 485ADP to the designated port Poor connection may cause malfunction 3 1 How to Install to FX Series PLC Installation to FX1S FX1N FX2N Turn OFF the PLC before beginning any work 1 Remove the panel cover from the top face of the main unit 2 Take off the resin cover from the left side of the main unit 3 Install the following board to...

Page 3: ... they may cause fire breakdown or malfunction Securely install the 485ADP to the designated port Poor connection may cause malfunction 3 1 How to Install to FX Series PLC Installation to FX1S FX1N FX2N Turn OFF the PLC before beginning any work 1 Remove the panel cover from the top face of the main unit 2 Take off the resin cover from the left side of the main unit 3 Install the following board to...

Page 4: ... they may cause fire breakdown or malfunction Securely install the 485ADP to the designated port Poor connection may cause malfunction 3 1 How to Install to FX Series PLC Installation to FX1S FX1N FX2N Turn OFF the PLC before beginning any work 1 Remove the panel cover from the top face of the main unit 2 Take off the resin cover from the left side of the main unit 3 Install the following board to...

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