Westermo TD-32/485 Manuale utente

Tele modem

V.32bis

INSTALLATION MANUAL

6178-2203

www.w st rmo.s

TD-32/485

TD-32

©Westermo Teleindustri AB • 2000 • REV. A

Galvanic

Isolation

Transient

Protection

Approved

36178-2203

Tabl of Cont nts

Introduction ..................................................................................................................................................................... 4

Safety .......................................................................................................................................................................................... 4

Specifications .................................................................................................................................................................. 5

Installation .......................................................................................................................................................................... 6

RS-232/V.24 Connections ........................................................................................................................... 7

Line Connection ........................................................................................................................................................ 7

Typical TD-32 Line Connections ..................................................................................................... 8

TD-32/485 (RS-422/485 interface) ................................................................................................ 9

DIP Switch Setup .................................................................................................................................... 10–13

LED Status Indicators ................................................................................................................................... 13

DTE Command Lines .................................................................................................................................... 14

AT Command Set.................................................................................................................................... 15–34

Result Codes .............................................................................................................................................................. 35

S-Registers ......................................................................................................................................................... 36–45

Application Examples ...................................................................................................................... 46–49

Glossary ................................................................................................................................................................ 50–53

46178-2203

Introduction

The Westermo TD-32 is an industrialised dial and leased line modem. This modem has been devel-

oped to be used in industrial applications and has some features you would not expect to find on a

normal modem.

Terminal data rates of up to 57. kbit/sec can be handled using data compression and error correc-

tion. The maximum line modulation speed is 14,400 bit/sec (V.32bis).

Leased line connections can be made on 2 or 4 wires. The modem can also be used on ordinary twist-

ed pair cables to provide long distance asynchronous communications.

A watchdog facility continually monitors the power supply and internal hardware as well as the oper-

ational software. In the event of a problem the modem automatically resets. This feature has been

included to make the unit more suitable for use in unmanned locations.

The TD-32 is available in two standard versions for power supply by 230V AC or 12–3 VDC.

Special 115V AC and 3 – 0V DC models are also available on request.

Westermo have implemented commands often left out of standard modems. Two examples of these

Westermo specific AT-commands are &D and &A (see AT-command description for further informa-

tion).

The TD-32 can handle 11 data bits and has a special 2 stop bit mode to allow the unit to be used in

applications many modems can’t handle.

The TD-32 has been designed with the engineer in mind, hence the extensive information on the

command set, S registers, DIP switched and error codes. We have endeavoured to include all

necessary information however if you need more please do not hesitate to call us.

Saf ty

This equipment should only be installed by professional service personnel. If the unit is intended

for permanent connection to mains supply, there should be a readily accessible disconnect device

(circuit breaker) incorporated into the fixed wiring.

Line connections on this equipment are designed for connection to TNV circuits.

The mains connection is classified as excessive voltage.

Description of the above classifications are given in EN60950:1992.

The TD-32D shall only be installed to a power supply of the type SELV.

56178-2203

Sp cifications

Modulation CCITT V.32bis, 4 800 till 14 400 bit/s

CCITT V.32, 4 800/9 600 bit/s

CCITT V.22bis, 2 400 bit/s

CCITT V.22, Bell 212A, 1200 bit/s

CCITT V.21, Bell 103, 300 bit/s

Dial up Tone signals DTMF

S ttings AT-commands & switches

Transmission Asynchronous & Synchronous

Transmission sp d, DET 300, 600, 1 200, 2 400, 9 600, 19 200, 38 400 & 57 600 bit/s

Compr ssion V.42bis & MNP5

Charact rs Up to 11 bitar

Error corr ction V.42, MNP 2-4 & MNP 10

Int rfac EIA RS-232-C/V.24. RS-422/485 is an option

Lin int rfac RJ12 or 4-pole screw connector

Lin 2-wire for dial up connections

2- or 4-wire for leased line connections

REN,

Ring r Equival nc Numb r 1

Pow r supply 230V AC –10 – +15%, 48–62 Hz (TD-32 AC)

12–36V DC (TD-32 DC)

115V AC or 36–60V DC can be delivered as optional

Pow r consumption 25 mA at 230V AC

200 mA at 12V DC

Isolation Between line, RS-232 connection and power 1500V

Fus AC 100mA, DC 1.6A

T mp ratur 5–50°C surrounding temperature

Humidity 0–95% RH, without condensation

Dim nsions 55x100x128 mm (WxHxD)

W ight 0.6 kg (TD-32 AC) & 0.4 kg (TD-32 DC)

Indications PWR, LINE, ANS, REL, TD, RD, RTS, DCD, DTR & DSR

Mounting On 35 mm DIN-rail

66178-2203

Installation

The modem should be con-

nected in the following way:

Power connection is made

through screw-block at bottom

right corner.

For 115V AC or 230V AC it is a

3-pole connector, and for 12–3

or 3 – 0V DC a 2-pole connec-

tor.

Computers or other equipment

are connected through an

RS-232/V.24 connection.

This connection can be made

either to the 25-pole D-sub or

the 9-pole screw connector.

Do not use ribbon cable for

RS-232 connections.

Light

emitting

diodes

Screw-block for

RS-232/V.24

connection

25-pole D-sub

for RS-232/V.24

connection

PWR

Connection

Line

connection

RJ-12

Line connection

screw block

1234567

▼▼▼

▼

25-pos. Screw Direction Name Description

D-sub Terminal DCE-DTE

1 - - - PE Protective earth

2 8 TXD Transmit data

3 7 RXD Receive data

4 6 RTS Request to send

5 5 CTS Clear to send

6 2 DSR Modem ready

7 1 - - - SG Signal ground

8 4 DCD Data carrier detect

9 Continuous high

10 Continuous low

12 DRS Speed indication (1200/2400)

15 TXC Synchronous TXD clock from modem

17 RXC Synchronous RXD clock from modem

20 3 DTR Data terminal ready

21 RDL Request of remote digital loop back

22 9 RI Ring indicator

23 DRS Data speed select (1200/2400)

24 EXC External synchronous clock

25 TI Test indication signal

76178-2203

RS-232/V.24 Conn ctions

Pin outs for the 25-pole D-sub and 9-pole screw terminal:

The other pins in the 25-pole D-sub should be left unconnected.

←

Lin conn ction

The telephone line is connected to the -pole RJ-12

connector or to the 4-pole screw block in the bottom

left side.

When using the screw-block a strap plug supplied must

be placed in the RJ-12 connector.

If this is not done the outgoing signal will not be

connected to the screw-block.

1 2 3 4

2-wire lines are connected to the two middle pins (3 & 4)

in the RJ-12 plug or the TX screws (1 & 2).

In the UK modems the 2-wire line is connected to pin 2 & 5

in the RJ-12 connector.

4-wire lines are connected to the screw terminal, transmitter

to TX (1 & 2) and receiver to RX (3 & 4).

12345678

86178-2203

Typical TD-32 lin conn ctions

4-position

screw terminal

Handshaking

Leased line 2-wire

Telephone

Exchange Telephone

Exchange

Dial up line 2-wire

Telephone

modem

4-position

screw terminal

4-position

screw terminal

RJ-12 kontakt

Leased line 4-wire

Telephone

Exchange Telephone

Exchange

Dial up line 2-wire

Telephone

modem

1234567

The TD-32 is delivered with a factory setting for “hardware hand-

shake” with RTS-CTS which means that if only TX, RX and GND

are connected no data will be sent on the receiving modem’s RS-232

connection unless RTS is high. The problem can be solved by placing

a jumper between RTS (screw terminal no ) and for example DSR

(screw terminal no 2) or by disabling the handshake with the command

AT&K0, or with switch 3:2 (switch settings).

96178-2203

Termination

2-wire

TD-32/485 (RS-422/485 int rfac )

As an option the TD-32 can be supplied with an RS-422/485

interface. This product is referred to as the TD-32/485.

On the TD-32/485 the RS-232/V.24 connection on the screw

terminal on upper front side of the unit has been replaced with

an RS-422/485 interface. All other features remain identical

between the standard TD-32 and TD-32/485. The TD-32/485

can still be connected to an RS-232/V.24 port using the 25-pole

D-sub. Please note that there is no galvanic isolation between

the RS-232 and the RS-422/485 ports so they should not be

connected simultaneously.

The RS-422/485 connections are made as shown below.

Please note that the selection of 2 or 4 wire and termination or

no termination is done by linking between some of the screw

terminals.

R+

RS 422/485

R-T+T-GND

PWR

RTS

DCD

LINE

ANS

REL

T4T2

V24/RS232-C

WIRE

2/4S1

1234567

TD-32/485

R+

RS 422/485

R-T+T-GND

PWR

RTS

DCD

LINE

ANS

T4T2

V24/RS232-C

WIRE

2/4S1

1234567

R+

RS 422/485

R-T+T-GND

PWR

RTS

DCD

LINE

ANS

T4T2

V24/RS232-C

WIRE

2/4S1

1234567

Termination

4-wire

R+

RS 422/485

R-T+T-GND

PWR

RTS

DCD

LINE

ANS

T4T2

V24/RS232-C

WIRE

2/4S1

1234567

Connection

RS-485

R+

RS 422/485

R-T+T-GND

PWR

RTS

DCD

LINE

ANS

T4T2

V24/RS232-C

WIRE

2/4S1

1234567

Connection

RS-422

Switch 1

10 6178-2203

DIP Switch S tup for Dial-up and L as d Lin

Disconnect power before changing DIP-switches.

Use ESD-protection when changing switches.

The DIP-switches can be used to provide the following settings.

The DIP-Switches are underneath the top lid of the modem.

Non defined switches will be in off position.

1234

1234567

Standard dial-up line

(ATE0Q1&C1&A1)

Leased line, Answering

1234

(ATE0Q1&C1&A1)

Leased line, Originating

1234

(AT&A1)

Do not abort if unwanted characters

are received when connecting

1234

(ATE0Q1&C1)

Escape sequence disabled

(All commands ignored in on-line mode)

AT-commands

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