Westermo TD-34 User Manual

Advanced Industrial

Telemodem

V.34

INSTALLATION MANUAL

6610-2203

www.westermo.com

TD-34

LV/HV

©

Westermo Teleindustri AB • 2005

Galvanic
Isolation

Transient

Protection

Balanced

Transmission

CE

Approved

2 6610-2203

Table of Contents

1. Introduction

................................................................................................................................................. 3

1.1 Functional description

............................................................................................................... 4

2. Safety ........................................................................................................................................................................ 5

2.1 Approvals

.................................................................................................................................................. 6

2.2 Declaration of conformity

................................................................................................. 7

3. Specifications TD-34 LV and TD-34 HV ........................................... 8–9

4. Maintenance ............................................................................................................................................. 10

5. Installation ................................................................................................................................................... 10

5.1 Mounting /Removal

................................................................................................................ 10

5.2 Connections

........................................................................................................................... 11–17

5.2.1 Interface RS-232 9-pos D-sub

.................................................................... 12

5.2.2 Interface RS-232, 9-pos screw terminal

....................................... 12

5.2.3 Interface RS-485/422, 4-pos screw terminal

.......................... 13

5.2.4 Interface Leased Line

........................................................................................... 13

5.2.5 Interface Alarms

.......................................................................................................... 13

5.2.6 Interface RJ-11, PSTN

.......................................................................................... 13

5.3 Configuration

....................................................................................................................... 14–16

5.3.1 DIP switch settings TD-34

.................................................................... 14–16

5.4 LED Status Indicators

........................................................................................................ 17

6. AT Commands .......................................................................................................................... 18–42

7. Result Codes .................................................................................................................................. 43–44

8. S-registers ........................................................................................................................................... 45–52

9. Glossary .................................................................................................................................................. 53–55

10. Dialback application 1 ........................................................................................................... 56

11. Dialback application 2 ........................................................................................................... 57

12. Remote Access application ......................................................................................... 58

13. Schneider PLC application .......................................................................................... 59

36610-2203

1. Introduction

The TD-34 is Westermo’s current top of the range analogue Telephone Modem intended for
use under the most extreme conditions.The TD-34 is the result of Westermo’s experience
and knowledge in the area of Industrial Telecommunication over more that 25 years. High
noise environments, difficult configurations and customer-specific applications can easily be
solved using TD-34 product.The philosophy for the TD-34 is based on quality and function
rather than optimizing for price. Nothing has been left to chance when designing this modem.
The TD-34 is an asynchronous modem with RS-232 and RS-485/422 interfaces built-in
as standard.The TD-34 can be used on standard PSTN “ Public Switched Telephone Network”
or Leased Lines consisting of either 2 or 4-wires for line connection.
The RS-485/422 interface can be configured as either end of line or intermediate using
2 or 4-wires.
The Opto-isolated Alarm interface on TD-34 may be used either for dial up based on a certain
event or as indication from the remote end. Indication of the state of the alarms is provided
on the front panel of the TD-34.

RS-232 2- or 4-wire leased line RS-232/422/485

TD-34TD-34

PSTN

4 6610-2203

1.1 Functional description

The TD-34 has various interfaces that will cover most industrial applications.TD-34 is func­tionally complete industrial modem including alarm handling, leased line to PSTN redundancy,
Industrial Temperature Range, RS-232/422/485 interfaces and a power
supply interface with a wide input voltage range.All functional blocks are illustrated
in the figure below. A more detailed description can be found under chapter 3. Specifications
(page 8–9).

DP

CPU

Memory

ROM & RAM

MCU

Config.

DIP-switch

RS-232

RS-422/485

Leased
Line

Leased
Line

LED’s

+5V

0

IN

Isolated

power supply

Telephone
Line

Telephone

Line

Alarm in

Alarm out

Common

RS-232/V.24 RS-422/485

DAA

TTL

TTL

TTL

DAA

56610-2203

2. Safety

General:

Before using this unit, read this manual completely and gather all information on the
unit. Make sure that you understand it fully. Check that your application does not
exceed the safe operating specifications for this unit.

Before installation, maintenance or modification work:

Prevent damage to internal electronics from electrostatic discharges (ESD)
by discharging your body to a grounding point (e.g. use of wrist strap).
Prevent access to hazardous voltages by disconnecting the unit from AC/DC
mains supply and all other electrical connections.

Installation:

This unit should only be installed by qualified personnel.
This unit should only be installed in a “restricted access area”, for example
a lockable cabinet where access is restricted to service personnel only.
This unit is intended for permanent connection to the AC/DC mains supply.
The power supply wiring must be sufficiently fused, and if necessary it must be possi­ble to disconnect manually from the AC/DC mains supply. Ensure compliance to
national installation regulations.
Units with the rated voltage exceeding 42.4 V peak or 60 VDC, are defined as class I
equipment with a protective earthing conductor terminal.
Units with the rated voltage up to 42.4 V peak or 60 VDC, are defined as class III
equipment and shall be separated from hazardous voltage by double or reinforced
insulation.
This unit uses convection cooling.To avoid obstructing the air flow around the unit,
follow the spacing recommendations (see Installation section).

!

!

!

6 6610-2203

For TD-34 in US:

This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA. On one outer side of this
equipment is a label that contains, among other information, a product identifier in the format US:AAAEQ##TXXXX. If
requested, this number must be provided to the telephone company.

This equipment uses the following USOC jacks: RJ11C

A plug and jack used to connect this equipment to the premises wiring and telephone network must comply with the appli­cable FCC Part 68 rules and requirements adopted by the ACTA. A compliant telephone cord and modular plug is provided
with this equipment. It is designed to be connected to a compatible modular jack that is also compliant. See installation
instruction for details.

REN=0.9B.

The REN is used to determine the number of devices that may be connected to a telephone line. Excessive RENs on a
telephone line may result in the devices not ringing in response to an incoming call. In most but not all areas, the sum of
RENs should not exceed five (5.0 ).To be certain of the number of devices that may be connected to a line, as determined
by the total RENs, contact the local telephone company.For products approved after July 23, 2001, the REN for this product
identifier that has the format US:AAAEQ##TXXXX.The digits represented by ## are the REN without a decimal point
(e.g , 03 is a REN of 0.3). For earlier products, the REN is separately shown on the label.

If this terminal equipment, TD-34, causes harm to the the telephone network, the Telephone Company will notify you in
advance that temporary discontinuance of service may be be required. But if advance notice isn’t practical, the telephone
company will notify the cutomer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC
if you believe it is necessary.

The telephone company may make changes in its facilities, equipment, operations or procedures that could affect the opera­tion of the equipment. If this happens the Telephone Company will provide advance notice in order for you to make necessary
modifications to maintain uninterrupted ser vice.

If trouble is experienced with this equipment, for repair or warranty information, please contact Gross Automation
[phone] (phone) / [phone] (fax) /[e-mail] (e-mail). If the equipment is causing harm
to the telephone network, the Telephone Company may request that you disconnect the equipment until the problem is
resolved.

There are no user serviceable parts in this equipment.

Connection to party line service is subject to state tariffs. (Contact the state public utility commision, public service commision
or corporation commision for information.)

If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this TD-34 does
not disable your alarm equipment. If you have questions about what will disable alarm equipment please consult your tele­phone company or a qualified installer.

Caution: To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.

Attention: Pour réduire le risque d’incendie, utiliser uniquement des conducteur de télé-

communications 26 AWG ou de section supérieure.

2.1 Approvals

Conformity with the Directive 73/23/EEC (Low Voltage) has been assessed by application of
the standard EN 60 950.
Conformity with the Directive 89/336/EEC (Electromagnetic Compatibility) has been assessed
by application of the standards EN55024:1998, EN61000-6-2:1999 and
EN50082-1:1997.
Conformity with the Directive 99/5/EEC (Radio Equipment & Telecommunications Terminal
Equipment) has been assessed by application of the standards EN55024:1998, EN61000-6­2:1999, EN50082-1:1997,EN 60 950 and EN41003:1996.
The TD-34 conforms to UL STD 1950, CS-03, FCC Part 68 and
CAN/CSA STD 22.2 No 950-50.

76610-2203

2.2 Declaration of conformity

3. Specifications TD-34 LV and TD-34 HV

Model description TD-34 LV TD-34 HV

12–27 V AC ±10% 95–240 V AC ±10%
12–54 V DC ±10% 110–240 V DC ±10%

Frequency 48–62Hz 48–62 Hz
Fuse, F1 1.0 A F SMD 1.0 A S

Littelfuse Wickman

Power consumption 3 W 50 mA

8 6610-2203

Power supply

Connector RJ-11 & Screw terminal
Topology 2-wire on RJ-11 Pin3 & Pin4 bus internally connected

to LL1 & LL2 on screw terminal

Line Modulation ITU-T V34 ( up to 33.6 kbit/s ),V32bis,V32,V23,

V22bis,V22,V21, Bell212A, Bell103

Dial up Tone signals DTMF
Compression V42bis & MNP5
Error Correction V42 LAPM, MNP 2–4 & MNP-10
Isolation 1 500 Vrms to rest of electronics

PSTN Interface

Connector Screw terminal
Topology 2-wire on screw terminal LL3 & LL4

4-wire on screw terminal LL1, LL2, LL3 & LL4

Line Modulation ITU-T V34,V32bis,V32,V23 (1200/75),V22bis,V22,V21,

Bell212A, Bell103

Compression V42bis & MNP5
Error Correction V42 LAPM, MNP 2-4 & MNP-10
Isolation 1 500 Vrms to rest of electronics

Leased Line Interface

96610-2203

Connector 9-pos D-sub and screw terminal
DTE Speed Up to 115.2 kbit/s
DTE Format Up to 11 bits

EIA RS-232-C/V24 Interface

Connector 2-wire (RS-485) 4-wire on 4-pos screw terminal
DTE Speed Up to 115.2 kbit/s
DTE Format Up to 11 bits
Special features Fail-safe, termination

EIA RS-422/485 Interface

Connector 3-position screw terminal AL1, AL2 & AL_COM
Supply Voltage AL1 10–60 V DC, 1 mA@10 V DC
Isolation AL1 1 500 Vrms to rest of electronics
Output AL2 Max 1 A, electromechanical relay
Isolation AL2 1 500 Vrms to rest of electronics

Alarm Interface

Powe r Ye s
PSTN Interface Ye s
Leased Line Interface Ye s
RS-485/422 Ye s

Transient protection

Indicators TD, RD, RTS, DTR, DCD, DSR, PWR, LINE,

AL1,AL2

Operating Temperature –40 to +70°C
Altitude Up to 4 000 m above sea level
Humidity 0–95% RH, without condensation
IP-Classification IP20
Weight, kg 0.4
Dimensions, mm 55x100x128 (WxHxD)
Mounting On 35 mm DIN-rail

Miscellaneous

10 6610-2203

4. Maintenance

No maintenance is required, as long as the unit is used as intended within the specified condi­tions.

5. Installation

5.1 Mounting / Removal

Before mounting or removing the unit:

Prevent damage to internal electronics from electrostatic
discharges (ESD) by discharging your body to a grounding
point (e.g. use of wrist strap).

Prevent access to hazardous voltages by disconnecting the
unit from AC/DC mains supply and all other electrical
connections.

Mounting

This unit should be mounted on 35 mm DIN-rail which is horizontally mounted on a wall or
cabinet backplate.
This unit uses convection cooling.To avoid obstructing the airflow around the unit,
use the following spacing rules. Recommended spacing 25 mm (1.0 inch) above/below and 10
mm (0.4 inches) left/right the unit.
Snap on mounting, see figure

Removal

Press down the black support at the back of the unit using
a screwdriver, see figure.

10 mm *

(0.4 inches)

25 mm

25 mm

* Spacing (left/right) recommend-

ed for full operating temperature
range

!

CLICK!

116610-2203

9-pos. D-sub
RS-232

Alarms

Leased

Line

Line

connection

RJ-11

Line

connection

422/485

Power
connection
LV/HV

9-pos. screw terminal
RS-232

5.2 Connections

TD-34 Tele Modem family consist of two products:TD-34 LV and TD-34 HV.
TD-34 LV has a 2-pos. power connector insensitive to polarity as shown by the symbol ≈ on
the front.
The PE wire “protective earth” is not connected internally in TD-34. but may be

connected for backwards compatibility.

12 6610-2203

Direction 9-pos. Name Description

DCE-DTE D-sub

O 1 DCD Data Carrier Detect
O 2 RXD Receive Data

I 3 TXD Transmit Data
I 4 DTR Data Terminal Ready

– 5 SG Signal Ground

O 6 DSR Data Set Ready

I 7 RTS Request To Send
O 8 CTS Clear To Send
O 9 RI Ring Indicator

Direction 9-pos. Name Description

DCE-DTE screw terminal

– 1 SG Signal Ground

O 2 DSR Data Set Ready

I 3 DTR Data Terminal Ready
O 4 DCD Data Carrier Detect
O 5 CTS Clear To Send

I 6 RTS Request To Send
O 7 RXD Receive Data

I 8 TXD Transmit Data

– 9 RI Ring Indicator

5.2.1 Interface RS-232 9-pos D-sub

5.2.2 Interface RS-232, 9-pos screw terminal

5

4

3

2

1

9

8

7

6

987

6

543

2

1

Direction 4-pos. Name Description

screw terminal

I/O 3 Tx+ (A/A’) Transmit (RS-422)

Transmit/Receive (RS-485)

I/O 4 Tx– (B/B’) Transmit (RS-422)

Transmit/Receive (RS-485)

I 1 Rx+ (A’) Receive (RS-422)
I 2 Rx– (B’) Receive (RS-422)

136610-2203

Direction Pos. no. Name Description

I/O 3 RING Transmit/Receive
I/O 4 TIP Transmit/Receive
I/O 2 RING* Transmit/Receive
I/O 5 TIP* Transmit/Receive

5.2.6 Interface RJ-11, PSTN

*) Modem is configurable by a DIP switch setting

Direction Pos. no. Name Description

O 1 LL1 Transmit (4-wire)
O 2 LL2 Transmit (4-wire)

I/O 3 LL3 Receive (4-wire)

Transmit/Receive (2-wire)

I/O 4 LL4 Receive (4-wire)

Transmit/Receive (2-wire)

5.2.4 Interface Leased Line

Direction Pos. no. Name Description

I 1 AL1 Alarm 1 Input
I 2 AL2 Alarm 2 Output
I 3 AL_COM Alarm Common

5.2.5 Interface Alarms

5.2.3 Interface RS-485/422, 4-pos screw terminal

3

2

1

12

3

4

4
3
2

1

14 6610-2203

5.3 Configuration

TD-34 can be configured via AT-commands on the service interface, or by a remote modem (if
the TD-34 is set for remote configuration, see SW 4).

5.3.1 DIP-switch settings

DIP-switches are accessable under the lid on top/front of the unit. DIP-switches are
used to configure the unit.

Warning!

Prevent damage to internal electronics from electrostatic discharges (ESD) by
discharging your body to a grounding point (e.g. use of wrist strap), before the
lid on top/front of the unit is removed.

Warning! Do not open connected equipment.

Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains
supply and all other electrical connections.

NOTE! The change of DIP-switch settings are valid only after a power on.

If configured by any other method during normal operation, this new
configuration override the DIP-switch settings. However, after a new
power on the DIP-switch settings have precedence.

!

!

15

6610-2203

SW 1

DTE Speed and Formats

ON

12345678

ON

12345678

7E

ON

12345678

7O

ON

12345678

8N

ON

12345678

8E

ON

12345678

8O

ON

12345678

Direct Mode 8E or 8O

ON

12345678

Direct Mode 7E, 7O or 8N

ON

12345678

2 stop bits

ON

12345678

Auto detect

ON

12345678

300 bit/s

ON

12345678

600 bit/s

ON

12345678

1 200 bit/s

ON

12345678

2 400 bit/s

ON

12345678

4 800 bit/s

ON

12345678

9 600 bit/s

ON

12345678

19 200 bit/s

ON

12345678

38 400 bit/s

ON

12345678

57 600 bit/s

ON

12345678

115 200 bit/s

SW 2

RS-422/485 & Alarm Services

ON

12345678

Enable RS-485

ON

12345678

Enable RS-422

ON

12345678

Terminate
RS-422/485

ON

12345678

Enable I/O

7N

16 6610-2203

SW 4

Special services

ON

12345678

Reliable mode disable \N0

ON

12345678

Remote configuration enable

ON

12345678

Dial-back PSTN enable
(2-wire leased line)

ON

12345678

Dial-back answer

ON

12345678

PLC mode enable
Q1E0&C1&K0&A1

ON

12345678

Abort disable
&A1

ON

12345678

Auto retrain disable
%E0

ON

12345678

Dial-back originate

SW 3

Line Mode & Modulation

ON

12345678

Leased line
(Dial-Up PSTN = Off)

ON

12345678

4-wire leased line mode
(2-wire leased line mode = Off)

ON

12345678

Leased line answer
(Originate = OFF)

ON

12345678

Not used

ON

12345678

Auto detect mode

ON

12345678

V.34, 33 600 bit/s

ON

12345678

V.34, 28 800 bit/s

ON

12345678

V.32, 9 600 bit/s

ON

12345678

V.32bis, 14 400 bit/s

ON

12345678

V.22bis, 2 400 bit/s

ON

12345678

V.22, 1 200 bit/s

ON

12345678

V.21, 300 bit/s

Factory settings

ON

12345678

SW1, SW2, SW3 and SW4

ON

12345678

V34, 19 200 bit/s

176610-2203

5.4 LED Status Indicators

PWR Power Indication. Flashes if an error is detected
DTR Data Terminal Ready modem signal
RTS Request To Send modem signal
TD Transmitted Data: Displays data received from the local RS-232/V.24 port
RD Received Data: Displays data leaving the modem on the RS-232/V.24 port
DCD Data Carrier Detect modem signal
LINE Modem is off-hook. Flashes if the dial-back function is in use
AL1 Alarm input active
AL2 Alarm output active

18 6610-2203

6. AT Commands

A – Answer

The modem will go off-hook and attempt to answer an incoming call if correct conditions are
met. Upon successful completion of answer handshake, the modem will go on-line in answer
mode.
The modem will enter the connect state after exchanging carrier with the remote modem.
If no carrier is detected within a period specified in register S7, the modem hangs up.
Any character entered during the connect sequence will abort the connection attempt.

Please also refer to AT&An

Syntax: ATA
Examples:
Result Codes: Please refer to Result codes (7)

&A – Ignore DTR character

The modem normally aborts the connection negotiation if a character is received from DTE
during the connection phase.This command gives the user the option to let the modem
ignore incoming characters.The parameter value, if valid, is written to S14 bit 4.

Syntax: AT&A<value>

<value> = 0 Enable abort (default)

= 1 Disable abort

Examples:
Result Codes: OK <value> = (0-1)

ERROR Otherwise

B – ITU-T or Bell

When the modem is configured to allow either option, the modem will select Bell or CCITT
modulation for a line speed connection of 300 or 1200 bit/s according to the parameter sup­plied.Any other line speed will use a CCITT modulation standard.The parameter value, if
valid, is written to S27 bit 6.

B0 Selects CCITT operation at 300 or 1200 bit/s during Call Establishment and a

subsequent connection. (Default)

B1 Selects BELL operation at 300 or 1200 bit/s during Call Establishment and a

subsequent connection.

\B – Transmit Break to Remote

In non-error correction mode, the modem will transmit a break signal to the remote modem
with a length in multiples of 100 ms according to parameter specified.
If a number in excess of 9 is entered, 9 is used.The command works in conjunction
with the \K command. In error correction mode, the modem will signal a break through the
active error correction protocol, giving no indication of the length.

\B1-\B9 Break length in 100 ms units. (Default = 3.) (Non-error corrected mode only.)

196610-2203

%C – Enable/Disable Data Compression

Enables or disables data compression negotiation.The modem can only perform data
compression on an error corrected link.

Syntax: AT&%C<value>

<value> = 0 Disables data compression. Resets S46 bit 1

1 Enables MNP 5 data compression negotiation.

Resets S46 bit 1
2 Enables V.42 bis data compression. Sets S46 bit 1
3 Enables both V.42 bis and MNP 5 data

compression. Sets S46 bit 1. (Default)

&C – RLSD (DCD) control

The modem controls the RLSD output in accordance with the parameter supplied.
The parameter value, if valid, is written to S21 bit 5.

Syntax: AT&C<value>

<value> = 0 RLSD (DCD) remains ON at all times

= 1 RLSD (DCD) follows the state of the carrier (default)

Examples:
Result Codes: OK <value> = (0-1)

ERROR Otherwise

+CMGS – Send SMS message

This command send a SMS message to a specified number.

Syntax: AT+CMGS=<num>

AT+CMGS=?
<num> SMS message receiver number

Examples: AT+CMGS=12345

> 123
> ABC
CTRL^Z
OK
AT+CMGS=?
+CMGS : (0-16 CHAR)
OK

Result Codes: OK <num> = (0-16 CHAR)

ERROR Otherwise

20 6610-2203

+CMGW – Store SMS in memory

This command sets SMS message and number in memory.

Syntax: AT+CMGW=<index>,<num>

AT+CMGW=?
AT+CMGW?
<index> Store SMS message in index [0,1]
<num> Store SMS number in index [0,1]

Examples: AT+CMGW=1,12345

> 123
> ABC
CTRL^Z
OK
AT+CMGW?
SMS NUM0=
SMS MSG0=
SMS NUM1=12345
SMS MSG1=123\rABC
OK
AT+CMGW=?
OK

Result Codes: OK <index>,<num> = (0-1), (0-16 CHAR)

ERROR Otherwise

+CMSS – Send SMS from memory

This command send a SMS message with number and data stored within memory.

Syntax: AT+CMSS=<index>,<num>

AT+CMSS=?
<index> Send SMS message from index [0,1]
<num> Send SMS with number instead of index [0,1] number

Examples: AT+CMSS=1

OK
AT+CMSS=1,123
OK
AT+CMSS=?
+CMSS : (0-1),(1-16 CHAR)
OK

Result Codes: OK <index>,<num> = (0-1), (0-16 CHAR)

ERROR Otherwise