Bausch Datacom DinBox Reference Manual

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Reference manual

DinBox GSM/GPRS

modem

Bausch Datacom NV Tiensesteenweg 56 B-3360 Korbeek-Lo +3216461288 filip@bausch.be

DinBox GSM/GPRS Reference manual – V1.0

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Document History

Date Version Status Author Info

25/10/2004 V1.0 Preliminary Filip Lavaerts Creation

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

1. Introduction 5

2. Block Diagram 6

3. Specifications 8

3.1 Housing 8

3.2 Connectors 8

3.3 Antenna Interface 9

3.4 Environmental conditions 10

3.5 Power Supply 10

3.6 GSM/GPRS module 10

4. SIM card 11

5. Ports and Connectors 12

5.1 Power Connection 12

5.2 Serial DTE Interface 13

5.3 I/O Connections 14

6. LED Indicators 16

7. Watchdog functionality 17

8. Push Button 17

9. AT Command interface 18

A. EC-declaration of conformity 19 B. Antenna 20 C. RJ-45 Modular Jack 21 D. ESD Protection 22

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DinBox GSM/GPRS Reference manual – V1.0

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

1. Introduction

This manual is the reference book when setting up the DinBox GSM/GPRS modem for your application. Because of the nature of this product and it's field of application, some degree of technical background knowledge regarding the application and datacommunication is assumed.

The DinBox GSM/GPRS modem is a versatile communications device designed to provide a very flexible data communication solution for an industrial environment. The DinBox GSM/GPRS modem contains a number of options to accommodate different communication speeds, power supplies and interfaces.

The DinBox GSM/GPRS is designed to transmit and receive data into a GSM data and/or a GPRS channel.

But … there is more … Information (serial data and/or input/output lines) can be transmitte d/ rec eived via a

TCP/IP socket, e-mail, FTP, SMS or normal GSM data to and from remote host systems.

GPRS connection can normally only be used if the DTE has TCP/IP capability to create and send TCP/IP - PPP packages. Thanks to the embedded TCP/IP and the implementation of a “Communication Control” processor the DinBox GSM/GPRS is, for example, capable of opening/closing and maintaining a GPRS connection complete independently of the DTE. Once the DinBox GSM/GPRS has opened the GPRS connection the DTE can transmit and receive transparent ASCII data with a host system.

Thanks to the 4 I/O lines it’s possible to read or change the status of control lines. The DinBox GSM/GPRS is designed in a robust DIN rail housing with differe nt power

supply options accepting a wide range of DC voltages. Basically we have 5 DinBox GSM and 5 DinBox GPRS models available :

Standard versions DinBox GSM

GSM modem

DinBox GPRS

GSM/GPRS modem with embedded TCP/IP

“Communication Control” processor versions

DinBox GSM or DinBox GPRS with …

• … 4 x I/O (TTL 3.7V)

• … 1 I nput (Opto Coupler) – 1 output (Relais contact NO/NC)

• … 2 input (Opto Coupler)

• … 2 output (Relais contact NO/NC)

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DinBox GSM/GPRS Reference manual – V1.0

2. Block Diagram

The block diagram below details the location and interconnection of the different functional units within the modem. The most important units are briefly described.

Controle LED’s

10 - 50 Vdc

I/O TTL

TxD RxD DCD DTR

DTE

Power

Control

Processor

Optional

GSM

GPRS

Modem

Watch

WatchDog “tick” LED

LED on PCB (internal) LED on Front

Power Supply

The power supply (DC) must be connected to the DinBox GSM/GPRS modem via a terminal block with screw contacts. Make sure the voltage supplied to the modem is in the range of the DinBox GSM/GPRS input voltage (see specifications for details on voltage range). This input is protected against reversed polarity with a seri al diode.

DTE Interface

The DinBox GSM/GPRS modem has a RS-232 interface (RJ-45) which can be connected to a computer or similar DTE device via included RJ-45/DB-9 serial cable.

GSM/GPRS Modem

The DinBox GSM/GPRS modem has a Wavecom GSM/GPRS module on board. Connection with the GSM dual band antenna is done via a standard SMA connector.

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DinBox GSM/GPRS Reference manual – V1.0

Watchdog circuit

A long-term watchdog circuit is implemented. The power supply of the Wavecom GSM/GPRS module and the “Communication Control” processor will be disconnected for a few seconds after the selected reset period. If a part of the DinBox GSM/GPRS is ‘locked’ after e.g. an unexpected high ESD discharge, surge pulse or an internal lock-up, this watchdog will always insure the continuity of communication.

“Communication Control” Processor

This processor can monitor the whole communication process. This processor will also control the 4 I/O lines and will perform the necessary action when input changes are detected or when data is received to change output pins.

We have different basic “Communication Control” applications available :

DinBox GSM

- 2 input – if input is changed -- SMS send

- 2 output – SMS received – output will be changed

- 1 input – SMS / 1 output SMS

DinBox GPRS

- 1 input – to open a socket / 1 output – active when the socket is opened

- 2 input – if input is changed – send predefined message in socket to a host

- 2 output – receive predefined message in socket from a host – output will be

changed

The software for this “Communication Control” processor can be adapted for special customer needs.

Please contact Bausch Datacom NV to have more information about all the possibilities and existing implementations.

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

3. Specifications

3.1 Housing

Phoenix Contact EG22,5 ABS DIN rail housing (EG22.5-G/ABS GN + EG22.5-A/ABS GN)

• 22.5 mm 107.5 mm x 75 mm

• IP40

• Symmetrical DIN rail mounting according EN50 022

• Green color

Standard ABS Acryl Butadiene Styrene – Tmax = 80 °C Inflammability class acc. to UL 94 : HB

Optional PC

(only on special request) Polycarbonate – Tmax = 115 °C metal DIN-rail clip Inflammability class acc. to UL 94 : V0

3.2 Connectors

I/O connections

Antenna

uP DTR TXD

GSM DCD RXD

Serial DTE

x x

Not

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- +

Power

DinBox GSM/GPRS Reference manual – V1.0

Power Supply 4-pin header (MSTBO2.5/4-GR(L)-5.08)

pitch : 5.08 mm / Inom : 12 A / Unom : 250 V

& Not Used 4-pin plug (MVSTBW2.5/4-ST-5.08)

pitch : 5.08 mm / Inom : 12 A / Unom : 250 V / Max. conductor cross section, flexible : 2.5 mm²

I/O 4-pin header (MSTBO2.5/4-GR(L)-5.08)

pitch : 5.08 mm / Inom : 12 A / Unom : 250 V

Connections 4-pin plug (MVSTBW2.5/4-ST-5.08)

pitch : 5.08 mm / Inom : 12 A / Unom : 250 V / Max. conductor cross section, flexible : 2.5 mm²

Antenna Standard SMA connector Serial DTE RJ-45 8x8 (Molex)

CTS RTS

RI GND DTR

TXD RXD DCD

3.3 Antenne Interface

The GSM antenna can be mounted directly on the GSM modem via a cable, depending on the application and the RF field at the local site. The antenna interface connector is SMA (male).

Frequency TX: 890-915 MHz

RX: 935-960 MHz

Impedance 50 Ohms VSWR TX: Max. 1.7:1 installed

RX: Max. 1.9:1 instal led

Gain: > 1.5dB referenced to l/2 dipole Maximum power 1W (cw)

2W peak; at ambient temperature of 55°C

Never use the DinBox GSM/GPRS modem without a

proper antenna attached!

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DinBox GSM/GPRS Reference manual – V1.0

3.4 Environmental conditions

Temperature in use -10°C / + 50°C Humidity in use 10% - 75% (non condensing)

3.5 Power Supply

Input voltage range: 10 – 50 Vdc regulated Typical power consumption : 350 mA

3.7 GSM/GPRS module

General specifications

• Dual-band 900/1800 MHz operation, designed to work with dual-band antennas.

• Maximum power output: 2 Watts

• 3V SIM reader

• Asynchronous mode

• DTE interface with speeds up to 115.200 bps (RS-232 interface option)

• Flow control (RTS/CTS – XON/XOFF) and speed buffering

• Automatic format/speed (300 to 115,200 bps) sensing

• AT command set support

Data Features

GSM DATA :

• Data circuit asynchronous, transparent and non transparent up to 14400 bit/s

• Automatic fax group 3 (Class 1 and Class 2)

GPRS packet Data :

• GPRS Class 10

• Coding Schemes : SC1 to CS4

• PBCCH support

Message services

• Point to point (MT/MO) and cell broadcast

• EMS

Embedded IP The following TCP/IP features and protocols are available : PPP / ICMP / DNS / SMTP / POP3 / FTP / TCP socket

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

4. SIM card

Disconnect the mains power before opening the

DinBox GPRS modem!

Install a SIM card into the SIM card interface socket. Without a SIM card the DinBox GSM/GPRS will communicate with the DTE but will not respond properly on all commands.

The International Mobile Subscriber Identity (IMSI) is used for internal signaling and is saved on the SIM (processor card). If the SIM is removed from the terminal, any existing connections are cleared and further call setup is prevented with the exce pt ion: emergency calls.

See the +CIMI command for more details. Use the +CGSN command to view the Product Serial Number of the DinBox GPRS

modem.

How to install the SIM card:

1. Disconnect the power and DTE interface.

2. Open the DinBox GSM/GPRS housing.

3. The SIM cardholder is placed between the 2 PCB connectors onto the PCB.

4. Carefully slide the metal bracket to the ‘Open’ position.

5. Insert the SIM card into the SIM card holder (mind the correct direction).

6. Close the SIM card holder and slide the metal bracket into the ‘Lock’ position.

7. Close the DinBox GPRS enclosure.

8. Connect power and DTE interface.

See the +CPIN command for more info about entering the PIN number.

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

5. Ports and Connectors

Before you start the installation, take a moment to become more familiar with the possible connections to and from the DinBox GSM/GPRS modem.

I/O connections

uP DTR TXD

GSM DCD RXD

Antenna

Serial DTE

x x

Not

- +

Power

Disconnect the power before connecting or

disconnecting the power and/or DTE plugs !

5.1 Power Supply Connection PIN

+ + DC

- - DC

Always disconnect the mains power before connecting or disconnecting the power. Make sure the voltage supplied to the modem is in the range of the DinBox GSM/GPRS

power supply specification (see specifications for details on voltage range).

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

5.2 Serial DTE Interface

Only devices which are conform with the safety

regulations can be connected to the DTE port!

The DinBox PSTN is equipped with a RJ-45 (8x8) connector. This is the serial interface of the modem.

A RJ-45 to a standard DB9 (female) cable is delivered with the DinBox GSM/GPRS modem.

RJ45

DB9

CCITT

8 CTS 7 RTS 6 RI 5 GND 4 DTR 3 TXD 2 RXD 1 DCD

V.24/V.28

I/O

DIN EIA

TEXT

1 1 109 M5 DCD O Data carrier detect 2 2 104 D2 R D O Receive data 3 3 103 D1 T D I Transmit data 4 4 108/1

108/2

S1.1 S1.2

DTR I Data terminal ready

5 5 102 E2 GND --- Signal ground

- 6 107 M1 DSR O Data set ready 7 7 105 S2 RTS I Request to send 8 8 106 M2 CTS O Clear to send 6 9 125 M3 RI O Ring indicator

Output: from DCE (modem) to DTE (terminal) Input: from DTE (terminal) to DCE (modem)

Bausch Datacom NV

DinBox GSM/GPRS Reference manual – V1.0

The DinBox GSM/GPRS modem will detect the DTE port speed (auto baud), number of data bits and parity type from the "AT" header that precedes every command (in async mode).

The commands +IPR and +ICF saves the baud rate, number of data bits, parity and number of stop bits.

5.3 I/O connections

“Communication Control” processor versions are equipped with I/O. We provide I/O on three possible levels ; TTL input and output, opto coupler input and relais contact output.

Below you will find the different characteristics of the different I/O’s.

• TTL The 4 TTL I/O lines are directly connected 4 port pins of the ATMEL AVR micro

controller and can be used as digital I/O or ADC inputs.

All connections are guarded with a Transil for ESD protection. See chapter D for more information.

Defined as Input : (internally connected via 20Kohm pull-up to Vcc)

left open Æ high input grounded Æ low input

Symbol Parameter Condition Min Typ Max

IL Input Low Voltage -0.5 V 0.7 V

IH Input High Voltage 2.5 V 4 V

Defined as Output : Vcc Æ high output

GND Æ low output

Symbol Parameter Condition Min Typ Max

OL Output Low Voltage IOL = 15 mA 0.6 V

OH Output High Voltage IOH = -15 mA 3.0 V

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DinBox GSM/GPRS Reference manual – V1.0

• Opto Coupler Input Input : 5 to 15 V (4 … 14 mA)

Other input specifications are optional possible.

Vcc

1 K

+ 2/4

rocessor

BAS16

SFH6156-2

- 1/3

• Relais Contact Output Normal open contact (default)

Normal closed contact (optional) Load Res. load (p.f. = 1) / Induct. load (p.f. = 0.4, L/R = 7 ms

Rated load 0.5 A at 125 Vac, 1 A at 24 Vdc Max. operation voltage 125 Vac, 60 Vdc Max. operation current 1 A

1/3

2/4

0 E

From processor

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DinBox GSM/GPRS Reference manual – V1.0

µP (

6. LED indicators

The InduBox GSM/GPRS has 6 LED indicators in front and 3 LED indicators onto the PCB (internal).

Front panel : GSM GSM Network

service

DCE LED off: no service

Pulse 80% on/ 20% off: emergency service Pulse 20% on / 80 % off: limited availability

LED on: full service TXD Transmit Data DTE Æ DCE Reflects the state of the TX D si gnal RXD Receive Data DCE Æ DTE Reflects the s t ate of the RXD sign a l DTR Data Terminal Ready DTE Æ DCE Reflects the state of th e DT R si g nal DCD Data Carrier Detect DCE Æ DTE Reflects the state of the DCD signal µP (PD6) (*)

Onto PCB (internal) : µP (PB7) (*)

µP (PB6) (*) WD Watchdog “Ti c k ” - Reflects the s tate of the Watc hdog

(*) “Communication control” processor (µP - micro processor) LED indicators functions are defined/described in the separate user manuals depending on the application.

IMEI CODE

PB6)

WD LED

PB7)

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DinBox GSM/GPRS Reference manual – V1.0

7. Watchdog functionality

To prevent a “total lock-up” of the DinBox GSM/GPRS a long term watchdog is implemented. This function is created with a separate RISC micro controller. The micro controller itself is guarded wi th it’s own i nternal wa tchdog (+/- 1 second refresh / WD LED flash).

The power supply to the “Communication Control” processor and the modem module will be disconnected for a few seconds after +/- 24 hour IF the modem is NOT connected (inactive DCD signal).

If the reset period is ended and the modem is connected to a remote host (active DCD signal) the reset will not be conducted.

If the reset period is ended and the watchdog already past a reset, because of an active DCD signal, the reset will be conducted after +/- 10 minutes !

Otherwise, if the DinBox GSM/GPRS is “locked-up” with an active DCD signal the watchdog will never be able to reset the WAN module.

8. Push button

The DinBox GSM/GPRS modem has a simple push button (switch) onto the PCB. This switch can be used to start-up the DinBox GSM/GPRS without the “Communication Control” processor. This function is necessary during first-time configuration of the DinBox GSM/GPRS or for manual communication tests and debugging purposes.

IMEI CODE

Switch

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DinBox GSM/GPRS Reference manual – V1.0

9. AT Command interface

The operating functions of the GSM Data Modem are implemented as AT commands and responses and are available via the serial DTE interface.

The DinBox GSM/GPRS is based on the Wavecom Wismo Q2403 module. The original Wavecom manuals are available onto the CD-ROM.

Two manuals are available :

AT Commands Interface Guide.

This manual describes the AT-commands based messages exchanged between an application and the DinBox GPRS modem in order to manage GSM related ev ents or services.

AT Commands Interface Guide for IP Connectivity.

(DinBox GPRS version only) This manual describes the AT-commands dedicated to IP connectivity.

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