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JY997D26401A

Safety Precaution

 

(Read these precautions before use.)

This manual classify the safety precautions into two categories: 

 and 

.

Depending on circumstances, procedures indicated by 

 may also be

linked to serious results.
In any case, it is important to follow the directions for usage.

Associated Manuals

How to obtain manuals

For the necessary product manuals or documents, consult with the Mitsubishi
Electric dealer from where you purchase your product.

Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.

Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury
or physical damage.

Manual name

Manual No.

Description

FX

3U

 Series 

User’s Manual 
- Hardware Edition

JY997D16501

MODEL CODE: 

09R516

Explains FX

3U

 Series PLC

specification details for I/O,

w i r i n g ,   i n s t a l l a t i o n ,   a n d
maintenance.

FX

3U

/FX

3UC

 Series 

Programming Manual 
-   B a s i c   &   A p p l i e d
Instruction Edition

JY997D16601

MODEL CODE: 

09R517

Describes PLC programming

for basic/applied instructions
and devices.

FX Series User’s 
Manual 
- Data Communication
 Edition

JY997D16901

MODEL CODE: 

09R715

Explains N:N link, parallel 

link, computer link, no 
protocol communication by 

RS instructions/FX

2N

-232IF.

FX

3U

 Series User’s 

Manual
- MODBUS Serial 
Communication Edition

JY997D26201

Explains the MODBUS serial 

communication network.

Certification of UL, cUL standards

The FX

3U

-232ADP-MB unit supports UL and cUL standards.

UL, cUL file number :E95239

Compliance with EC directive(CE Marking )

This document does not guarantee that a mechanical system including this product will
comply with the following standards.
Compliance to EMC directive of the entire mechanical system should be checked by
the user / manufacturer. For more details please contact the local Mitsubishi Electric
sales site.

Requirement for Compliance with EMC directive

The FX

3U

-232ADP-MB is compliant through direct testing (of the identified standards

below) and design analysis (through the creation of a technical construction file) to the
European Directive for Electromagnetic Compatibility (89/336/EEC) when used as
directed by the appropriate documentation.

Caution for compliance with EC Directive

Installation in Enclosure

Programmable logic controllers are open-type devices that must be installed and used
within conductive control boxes. Please use the FX

3U

 Series programmable logic

controllers while installed in conductive shielded control boxes. Please secure the
control box lid to the control box (for conduction). Installation within a control box
greatly affects the safety of the system and aids in shielding noise from the
programmable logic controller.

1. Outline

The FX

3U

-232ADP-MB communication special adapter (hereinafter called 232ADP-

MB) is a special adapter for RS-232C communication with an 9-pin D-Sub connector.
232ADP-MB is an isolated signal exchange unit of the RS-232C serial data
communication between the PLC and RS-232C device.
The FX

3U

-232ADP-MB features all functionality that is available with the FX

3U

-

232ADP, except that it also has MODBUS communication available.

1.1 Communication Function

1.2 Incorporated Items

Check if the following product and items are included in the package:

Standard

Remark

EN61131-2:2003

Programmable controllers

- Equipment requirements and 

tests

Compliance with all relevant aspects of the
standard.

Radiated Emissions

Mains Terminal Voltage Emissions

RF immunity

Fast Transients

ESD

   Surge

Voltage drops and interruptions

Conducted

Power magnetic fields

Communication type

Function

Computer link

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

Non-protocol 
communication

Serial communication via non-protocol between PLC and
RS-232C device.

Programming 
communication

Optional port available for suitable programming tool when
232ADP-MB is connected to PLC.

Remote maintenance

Program transfer or monitoring enabled via modem and
phone line connected to serial port of PLC.

MODBUS 
communication

Data transfer between a master and a slave.

Manual

Product

This

manual

FX

3U

-232ADP

                -MB

POWER
RD
SD

1.3 External Dimensions, Part Names, and Pin Configuration

1.3.1

External Dimensions and part name 

1.4 Pin Configuration

The pin configuration of the RS-232C port on the 232ADP-MB is as shown below.

2. Channel Allocation

Up to two communication ports can be added to the main unit.
Communication port channels are automatically allocated. The closer
communication special adapter to the main unit is ch1.

Using one communication special a communication expansion board

Using two communication special adapters

[1] DIN rail mounting groove (DIN rail: DIN46277)
[2] Name plate
[3] Special adapter slide lock: 

Used to connect special adapter on left side of this special adapter.

[4] Special adapter connector cover:

Remove this cover for connecting special adapter on the left side.

[5] Direct mounting hole:2 holes of 

φ

4.5 (0.18") (mounting screw: M4 screw)

[6] POWER LED (green): Lit while 5V DC power is supplied from main unit.
[7] RD LED (red): 

Lit while receiving data from connected RS-232C device.

[8] SD LED (red): 

Lit while sending data to connected RS-232C device.

[9] Special adapter connector:

Used to connect this special adapter to PLC main unit or special adapter.

[10] RS-232C connector (9-pin D-Sub, male): 

Connect RS-232C device to this RS-232C connector

[11] Screws to fix a cable connector: Screw holes #4-40UNC (inch screw thread)
[12] DIN rail mounting hook
[13] Special adapter fixing hook
[14] Special adapter connector:

Used to connect communication special adapter or analog special adapter to
this adapter on left side.

FX

3U

-232ADP

                -MB

[3]

[6]

[5]

[7]
[8]

[9]

[10]

[11]

[12]

[14]

[13]

[2]

[4]

[1]

74(2.92")

Weight: Approx. 80g (0.18 lbs)

Special adapter 

connector cover 

is removed  

7(0.28")

90(3.55")

98(3.86")

106(4.18")

17.6

(0.7")

7.5
(0.29")

15.1

(0.6")

Pin 
No.

Signal

Name

Function

1

CD

Receive 
carrier 
detection

ON when carrier for data reception 
is detected. 
(RS-232C device to 232ADP-MB)

2

RD
(RXD)

Receive 
data

Receive data
(RS-232C device to 232ADP-MB)

3

SD
(TXD)

Send data

Send data
(232ADP-MB to RS-232C device)

4

ER
(DTR)

Send 
request 

ON when RS-232C device is ready 
to receive data. 
(232ADP-MB to RS-232C device)

5

SG
(GND)

Signal 
ground

Signal ground
(232ADP-MB to RS-232C device)

6

DR
(DSR)

Send 
enable 

ON when send request is made 
toward RS-232C device.
(RS-232C device to 232ADP-MB)

7,8,9 Not used

Do not wire.

Screws to fix

RS-232C

connector

1

5

6

9

Screw holes:

#4-40UNC

(inch screw

thread)

Analog

special

function

adapter

Analog

special

function

adapter

Analog

special

function

adapter

FX

3U

-

232ADP

-MB

Analog

special

function

adapter

     Main unit

Communication

expansion board (ch1)

(ch2)

Analog

special

function

adapter

Analog

special

function

adapter

Analog

special

function

adapter

FX

3U

-

232ADP

-MB

Analog

special

function

adapter

FX

3U

-

232ADP

-MB

     Main unit

FX

3U

-CNV-BD

(ch1)

(ch2)

FX

3U

-232ADP-MB

Installation Manual

This manual describes the part names, dimensions, mounting, and

specifications of the product. Before use, read this manual and manuals of

relevant products fully to acquire proficiency in handling and operating the

product. Make sure to learn all the product information, safety information, and

precautions.

And, store this manual in a safe place so that you can take it out and read it

whenever necessary. Always forward it to the end user.

Registration
MODBUS

®

 is a registered trademark of Schneider Electric S.A.

The company name and the product name to be described in this manual are

the registered trademarks or trademarks of each company.

Effective April 2007
Specifications are subject to change without notice.

©

 2007 Mitsubishi Electric Corporation

Manual Number

JY997D26401

Revision

A

Date

April 2007

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