Moxa A52-DB25F Manual

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Side 1/2

Serial Communication Interface Conversion Solution

Transio A52/53 User’s Manual P/N: 1802000520516 Seventh Edition.

A52/A53 DTE Device

RJ45 DB9 Male

TxD 5 2 RxD

RxD 6 3 TxD

GND 7 5 GND

A52/A53 DCE Device

RJ45 DB25 Female

TxD 5 2 RxD

RxD 6 3 TxD

GND 7 7 GND

RS-422/RS-485 Pinouts

The RS-422/RS-485 port with RJ45 connector

or Terminal Block Connector is depicted as

follows.

~~RS-422

A52/A53

RJ45 Jack

Connector Pinouts Signals

1 TxD -(A)

2 RTS -(A)

3 RTS +(B)

4/7 SG

5 TxD +(B)

6 RxD +(B)

8 CTS +(B)

9 CTS -(A)

10 RxD -(A)

A52/A53

Terminal Block

Connector Pinouts Signals

1 TxD +(B)

2 TxD -(A)

3 RxD +(B)

4 RxD -(A)

5 SG

6 Power GND

7 VCCA (9V)

Note: Pins 6 and 7 of the Terminal Block are for

Power GND and Power Input, which is an

alternate option for power adapter. Be

careful TO NOT confuse RS-422/RS-485

GND with Power GND.

SG: Signal Ground

~~RS-485

A52/A53

RJ45 Jack

Connector Pinouts Signals

1 Data-(A)

4 SG

5 Data+(B)

7 SG

A52/A53

Terminal Block

Connector Pinouts Signals

1 Data+(B)

2 Data-(A)

5 SG

6 Power GND

7 VCCA 9V

Note : Pins 6 and 7 of the Terminal Block are for

Power GND and Power Input, which is an

alternate option for power adapter. Be

careful TO NOT confuse RS-422/RS-485

GND with Power GND.

SG: Signal Ground

Transio A52/53

Smart RS-232 to RS-422/485

Bi-directional Converter

Overview

Transio A52/53 is a smart RS-232 to RS-422/485

bi-directional converter, which allows one RS-232

port to be converted into an RS-422 or RS-485

port. With A52/53 you can control up to 32

devices, within 1.2 km, in a multidrop

environment.

Transio A52/53 is a Moxa Green Product. Moxa’s

Green Products satisfy the RoHS directive of the

European Parliament, and accordingly, do not

contain cadmium and cadmium compounds,

hexavalent chromium compounds, lead and lead

compounds, mercury and mercury compounds,

PBBs (polybrominated biphenyls), or PBDEs

(polybrominated diphenyl ethers).

To ease 2-wire RS-485 half-duplex control, fully

Automatic Data Direction Control (ADDC)

intelligence that requires no baud rate switch

settings is designed into each A52/53, simplifying

RS-485 software programming. Your applications

can easily manage data transmitting and receiving

via the half-duplex RS-485 port without using

additional code. Compared to other products that

require setting the clock speed manually with

switches, A52/53 lets you avoid many developing

and maintenance hassles.

To meet the high reliability required by harsh

industrial environments, all RS-422/485 signals

provide TVS protection, and ESD up to 25 KV. In

addition, A53 provides 2 KV of optical isolation

protection for all signals at the RS-422/485 end.

Features and Specifications

• Serial interface: RS-232, RS-422/485

• Port types: RS-232: RJ45;

RS-422/485: RJ45 or Terminal Block

• High speed, baud rate up to 921.6 Kbps; no

switch setting needed

• Signals:

RS-232: TxD, RxD, RTS, CTS, DTR, DSR,

DCD, GND;

RS-422: TxD+(B)/-(A), RxD+(B)/-(A),

RTS+(B)/-(A), CTS+(B)/-(A), GND;

RS-485-Data+(B)/-(A), GND

• Supports fully Automatic Data Direction

Control (ADDC) with no baud rate switch

settings for RS-485

• RS-485 data control modes: auto (ADDC) or

by RTS

• RS-422 supports CTS, RTS signals for

hardware flow control

• LED indicators for power and 4 signal states

(TxD, RxD, RTS, CTS)

• All RS-422/485 signals provide TVS

protection. (ESD 8 KV, EFT 2KV)

• All RS-422/485 signals support up to 2 KV

(DC) of optical isolation protection (A53

only)

• Provides overloading protection when there

are 2 signals shorted together at the

RS-422/485 end

• Built-in 120 ohm termination resistors for

RS-422/RS-485 (selectable with jumper by

RS-485 mode)

• Supports up to 32 units connected in an

RS-485 multidrop network

• CE approval

• 9V 1.5A UL/ TÜV 110V/230V power

adapter can support up to 4 converters

• An external power adapter is required, with

input voltage for the converter ranging from

DC +9V to +30V.

• Operating temperature: 0 to 55°C

• Dimensions: 90 x 60 x 21 mm

• Mounting Kit: Plastic Plates and screws for

mounting A52/53 on the wall or any surface.

• Power consumption: A52: 157 mA max.

(+9V); A53: 285A max. (+9V)

Applications

• Multipoint data acquisition

• Factory automation

• Remote serial device control

• Building security automation

• Critical industrial control

1 2 3 4 5 6 7

RJ45 Connector Terminal Block Connector

1 2 3 4 5 6 7 8 9 10

RJ45 Plug Pin 1

R S -4 2 2 / 4 8 5 R S -2 3 2

Mounting

Screw

Fixing Screw

RJ45 Plu

Pin 1

RS-422/485

R 45 Connecto rJ

Power Jack

RS-232

R 45 Connecto rJ

External Po wer Connection

RS-422/485

Ter mi n al Bl o c k

Transio A52/53 User’s Manual Transio A52/53 User’s Manual

Installation

Switch and jumper settings

To change the operation mode, remove the two

screws on top of the converter, open the cover,

and then use the array of sliding switches to set

the desired mode.

DIP switches are used to select the operation

mode (RS-422 or RS-485). For RS-485 mode,

the control mode (By RTS or ADDC) is also set

by DIP switch.

Internal view of A52/53

SW1

RS-422 mode Off

RS-485 mode On*

SW2

By RTS Off

Auto Data Direction Control (ADDC) On*

(* Default settings)

In RS-422 mode, RxD is automatically set with

a 120 ohm terminating resistor.

In RS-485 mode, the 120 ohm terminating

resistor is set by one jumper.

When shorted, the resistor is enabled.

Basic Communication Wiring

Before placing a converter in an existing

network, the converter should be properly

configured. The following diagrams show

typical layouts for both converters.

LED Indicators

LED indicators for TxD, RxD, RTS, CTS

signals and PWR are located on top of

A52/A53. The indicator light is NOT lit when

there is no signal, or the power is off.

TxD: Shows green when connected and

transmitting data from RS-232 to

RS-422/485.

RxD: Shows green when connected and

receiving data from RS-232 to

RS-422/485.

RTS: Shows green when connected and

RS-232 RTS Signal is ON.

CTS: Shows green when connected and

RS-232 CTS Signal is ON.

PWR: Shows green when power is ON.

Power supply

A52/53 converters are designed for standard

+24 VDC unregulated power for use in

industrial environments. Operation is

guaranteed when using any power supply

between +9 and +30 VDC, 350 mA.

An optional power adapter (9V 1.5A UL/TUV

110V/230V) can support up to 4 converters

(see the following diagram).

A52/53 Converter Connection Diagram

RS-232 Pinouts

The RJ45 port for the RS-232 signal is shown

in the following figure.

1 10

A52/A53 RJ45

Connector Pinouts RS-232 Signals

1 DCD Always On

2 DSR

3 RTS

4 GND

5 TxD

6 RxD

7 GND

8 CTS

9 DTR

10 –

Note: Each group of (DTR, DSR) pins are

shorted, freeing users from the hardware

flow control cable wiring problem. For

this reason, we list two types of RS-232

cable wiring below.

Type 1: To connect the RS-232 side of A52/A53 to

a DTE (e.g., PC COM1/2) or DCE (Be

sure to check the precise DTE/DCE

pinouts. The following DTE/DCE pinouts

are just an example)

A52/A53 DTE Device

RJ45 DB25 Male

DCD 1 8 DCD

DSR 2 20 DTR

RTS 3 5 CTS

GND 4 7 GND

TxD 5 3 RxD

RxD 6 2 TxD

GND 7 7 GND

CTS 8 4 RTS

DTR 9 6 DSR

A52/A53 DTE Device

RJ45 DB9 Male

DCD 1 1 DCD

DSR 2 4 DTR

RTS 3 8 CTS

GND 4 5 GND

TxD 5 2 RxD

RxD 6 3 TxD

GND 7 5 GND

CTS 8 7 RTS

DTR 9 6 DSR

A52/A53 DCE Device

RJ45 DB25 Female

DCD 1 8 DCD

DSR 2 6 DTR

RTS 3 4 CTS

GND 4 7 GND

TxD 5 2 RxD

RxD 6 3 TxD

GND 7 7 GND

CTS 8 5 RTS

DTR 9 20 DSR

Type 2: You can connect the RS-232 side of

A52/A53 to a DTE, e.g., a terminal or PC

COM1/2, with 3-pin wiring if you don't

need hardware flow control.

A52/A53 DTE Device

RJ45 DB25 Male

TxD 5 3 RxD

RxD 6 2 TxD

GND 7 7 GND

10-pin RJ45 Jack

AUTO

485

RTS

422

RJ45 Plug Pin 1

Pow e r

Po we r G ND

RS-42 2/4 85 RS-4 22/48 5

RS- 23 2 PC

Po w e r

TxD(2)

RxD ( 3 )

RTS(4 )

CTS(5)

DSR(6)

GND(7)

DCD(8)

DTR(20)

RxD(2) Data + (B))

TxD(3) Data -(A)

CTS(4) GND

RTS(5)

DTR(6)

GND(7)

DCD(8)

DSR(20 )

Data+ (B)

Data

GND

-(A)

RS-232 RS-485

Host D 25 Fe ma le

Conn ec tor

A52/53 Co nvert er

RS-48 5 De v ic e s

TxD(2)

RxD (3)

RTS(4 )

CTS(5)

DSR(6)

GND(7)

DCD(8)

DTR(20)

RxD(2) TxD+ (B))

TxD(3) TxD-(A)

CTS(4) RxD+ (B)

RTS(5) RxD-(A)

DTR(6) GND

GND(7)

DCD(8)

DSR(20)

RxD + (B)

TxD+ (B )

TxD-(A)

GND

RxD - ( A)

RS- 2 3 2

Ho st D 2 5 Fe male

Con ne c to r

A52/53 Converter

RS-4 22 De vic es

Produkt Specifikationer

Mærke:	Moxa
Kategori:	Ikke kategoriseret
Model:	A52-DB25F

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