Westermo TD-32/485 User manual

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
CE
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
8
9
▼▼▼
▼
▼
▼

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
:
6
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
8
9
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).
3
4

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
TD
RD
RTS
DCD
LINE
ANS
REL
T4T2
V24/RS232-C
WIRE
2/4S1
1234567
8
9
TD-32/485
R+
RS 422/485
R-T+T-GND
PWR
TD
RD
RTS
DCD
LINE
ANS
T4T2
V24/RS232-C
WIRE
2/4S1
1234567
8
9
R+
RS 422/485
R-T+T-GND
PWR
TD
RD
RTS
DCD
LINE
ANS
T4T2
V24/RS232-C
WIRE
2/4S1
1234567
8
9
Termination
4-wire
4-wire
R+
RS 422/485
R-T+T-GND
PWR
TD
RD
RTS
DCD
LINE
ANS
T4T2
V24/RS232-C
WIRE
2/4S1
1234567
8
9
Connection
RS-485
R+
RS 422/485
R-T+T-GND
PWR
TD
RD
RTS
DCD
LINE
ANS
T4T2
V24/RS232-C
WIRE
2/4S1
1234567
8
9
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.
ON
1234
ON
1234
1234567
8
9
Standard dial-up line
(ATE0Q1&C1&A1)
Leased line, Answering
ON
1234
(ATE0Q1&C1&A1)
Leased line, Originating
ON
1234
(AT&A1)
Do not abort if unwanted characters
are received when connecting
ON
1234
(ATE0Q1&C1)
Escape sequence disabled
(All commands ignored in on-line mode)
Related
AT-commands