SIRETTA LC200 Series Quick user guide

LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Hardware Reference Manual
Rev 1.0

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VAT Registration No. GB163 04 0349
Siretta Ltd
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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Table of Contents
Page
Introduction 3
About Siretta 4
General Description 5
Specications 6
AT Commands 7
LC200 Interface 8
System Diagram 10
System Overview 11
Modes of Operation 12
Ordering Information 13
Dimensions 14
DIN Rail Mount 16
Mounting the LC200 16
Removing the LC200 16
LC200 Series Images 17
LC200 LED Indicator 18
Modem States 19
Interfaces 20
RS232 Serial Port Interface 20
RS485 Serial Port Interface (Optional) 22
LC200-UMTS USB Serial Port Interface 23
USB Interface Drivers 24
SIM Socket 26
SIM Requirements 26
Antenna Connector 27
GSM/UMTS Antenna Connector 27
Power 29
LC200-GPRS USB Power Connector 29
Power Connector
(2-pin 3.5mm Pluggable Terminal Block)
30
Power Supply Requirements 31
Current Consumption 33
Switching the Modem ON/OFF 34
Siretta Recommends 36
Installation 38
Considerations for Installations
Incorporating the LC200
38
Power Supply Installation 39
Securing the Modem 39
Safety and Product Care 40
General Precautions 40
SIM Card Precautions 40
Antenna Precautions 41
Exposure to RF Energy 41
Safety Recommendations 43
Conformity Assessment 44
Disclaimer 45
Denitions 46

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
This document is intended to provide guidance when adding a modem from the
LC200 Series to your system.
The LC200 series of GPRS/UMTS M2M modems are a low cost range of modems
developed for easy integration into existing systems and for embedded application
development.
The LC200 modem range is based on the Telit xL865 GPRS/UMTS module series
without GPS. The modem manages the module power up sequence and can be
programmed to perform additional custom tasks.
This document discusses the modems hardware and software states and modes
of operation, in addition to the electrical characteristics of the modems interfaces.
Introduction

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Siretta, located in Reading, United Kingdom have been manufacturing antennas,
cable assemblies and cellular modems for over 10 years. We supply our products
globally to many of the world’s leading organizations.
Whether you require an off the shelf or custom solution, Siretta has a wide portfolio of
antenna, RF cable assemblies and modems to t your application.
Our extensive knowledge and experience in the wireless market allows us to support
a wide range of customer applications, focusing on frequencies typically within the
75MHz - 5.8GHz range. These encompass the HF, VHF, ISM, GSM/GPRS/3G/4G
and GPS frequencies as well as industrial WLAN and VHF/UHF antenna/Wi-Fi
antenna solutions.
With a heavy emphasis on design, we have a team of dedicated Application
Engineers and Product Managers, backed up by Field Sales Engineers, who
specialise in wireless applications.
We have made signicant investments in R&D facilities which boast GPS hardware
development equipment and a GSM Pico Cell on site, as well as development
software and a comprehensive suite of Industrial, Scientic and Medical band, and
non ISM band frequency products. We have many technology partners enabling us to
keep at the forefront of the communications industry and offer class leading wireless
solutions.
About Siretta

A member of the Olancha Group Ltd
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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
The LC200 range of wireless modems is a compact cellular modem with RS232 port
(RS232 and USB on 3G model) and plastic housing, offering state-of-the-art 2G/3G
connectivity for machine to machine (M2M) applications.
Features
»TCP/IP, SMS and CSD access via linkCONNECT software
»1 x RS232 serial port
»1 x mini USB 2.0 high speed interface (available on 3G model only)
»Wide range input voltages
»Extreme operating temperature
»The plastic enclosure can be mounted on a DIN-rail or on the wall
General Description

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Specications
LC200-GPRS LC200-UMTS
Standards: GSM/GPRS/EDGE GSM/GPRS/EDGE/UMTS/HSDPA/HSPA+
2G frequency band: 900, 1800MHz (EU Version) 900, 1800MHz (EU Version)
3G frequency band: -900, 2100MHz (EU Version)
Dimensions: 75 x 84 x 31mm 75 x 84 x 31mm
Weight: 105g 105g
Input voltage: 6 - 18V 6 - 21V
Power consumption: Idle: 50 - 60mA @ 12V Idle: 50 - 60mA @ 12V
Operating environment: -40 to +85°C
5 to 95% RH
-40 to +85°C
5 to 95% RH
GSM antenna connector: SMA Female SMA Female
USB interface: Mini USB (Power only) Mini USB 2.0 (Serial data and power)
Table 1. Specications of the LC200 modem

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
AT Commands
The LC200 range of wireless modems has a GSM engine at its heart which can be
congured via the serial interface using the Conguration Utility or SMS commands.*
*See ‘linkCONNECT Software Manual’ for more information on the Conguration Utility.

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
LC200 Interface
Standard Hardware Interfaces
The LC200 series modem comes with the following interfaces:
»1 x RS232 serial port interface for direct serial connection to device
»LC200-GPRS: 1 x mini USB (Power only)
LC200-UMTS: 1 x mini USB 2.0 (Serial data and power)
»1 x power connector (2-pin 3.5mm pluggable terminal block)
»1 x SMA female GSM antenna connector
»1 x SIM card reader (push-push)
»1 x external LED status indicator (Green)
Cellular Interface
The LC200 series modem comes with the following cellular interfaces:
»GPRS: Max 6.8kbps (DL & UL), Class 10
»EDGE: Max 236.8kbps (DL & UL), Class 12
»UMTS: Max 384kbps (DL & UL)
»HSDPA: Max 3.6Mbps / 384kbps (DL / UL)
»HSPA+: Max 7.2 / 5.76Mbps (DL / UL)
»CSD: Up to 9.6kbps
RS232 Serial Interface
The LC200 series modem comes with the following RS232 port interfaces:
»ESD protection: 15KV
»Parameters: 1200bps to 115200bps
»RS232: DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS, RI
USB Port Interface
The LC200 series modem comes with the following USB port interfaces:
»ESD protection: 15KV
»5V power supply for modem

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Optional Coverage
The LC200 series modems have the following coverage options available:
»(EU) European Union
»(NA) North America
Optional Technologies
The LC200 series modems have the following optional technologies available:
»European GPRS (2G)
»European UMTS (3G)
Optional Modem Features*
Optional Hardware
The LC200 series modems have the following optional hardware features:
» RS485 serial port (serial interface: Data+ (A), Data- (B), GND)
*To add optional features on your modem, see ordering Information on page 13

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
System Diagram
Figure 1. LC200 system diagram
The linkCONNECT LC200 series of self managing modems makes connecting over
the 2G or 3G networks simplicity itself. The Siretta linkCONNECT software does all
the hardwork for you and is easy to congure and work with. When connected to
your equipment the LC200 series will auto negotiate and connect to any network and
reboot as necessary to maintain connectivity to the internet and / or be monitored /
controlled from anywhere in the world.
GSM
PSU Power Input
SIM
RS232 Serial Port Interface
Visual Indicators
Power Supply Subsection
Communication Subsection
USB Port
Telit xL865 Module
* USB interface only provides power for LC200-GPRS and provides serial data and power for
LC200-UMTS.
*

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
This LC200 can be used in a number of applications, some examples are shown
below:
»Standard RS232 modem attached to existing equipment (PC/MAC/Server etc.)
»Standard USB modem attached to existing equipment (PC/MAC/Server etc.)
Typically connected devices are:
»PC/MAC/Linux platforms for use as modem
»Embedded (connected directly to remote equipment without a PC attached)
Operating System Connected Modem
»Connect to a remote device with RS232 connectivity over 2.5G/3G. Internet
connectivity can be retrotted to end equipment without changing the software or
conguration of the remote device.
System Overview

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Examples:
»Vending machine where the head ofce would poll for drinks remaining/money
taken etc. This would be an on-demand pull to obtain results in real time.
»Monitoring AMR/temperature/equipment in a home, i.e. Interrogate lights etc.*
»Monitoring GPIO, i.e. Open doors/windows*
»Remote entry system, i.e. Send a message to the modem to open a gate/door to
allow access.*
»Streaming live data from remote system to a central location
»Remote printing applications (remotely print over the GPRS network)
»Polling remote devices for information to prevent an engineer callout
USB Interface
This is a USB standard Communication Device Class (CDC) device. To use the LC200
with a Windows OS, you will need a supported driver. Please contact your Siretta
representative to obtain this.
Modes of Operation
*NOTE: Requires additional hardware not supplied with the LC200. Please speak to
your Siretta representative for more information.

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Ordering Information
LC200 XXXX
Product Module Version
GPRS (EU) = European Coverage of GPRS Technology
UMTS (EU) = European Coverage UMTS Technology
Part Numbering Examples
»LC200-N-GPRS (EU) = EU Coverage GPRS Wireless Modem with RS232 Interface
Modem Identier
LC200 = Wireless Modem with RS232 and USB Serial
Port Interfaces
-

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Dimensions
All dimensions are shown in mm. The mounting holes are suitable for a M3 xing
screwing. These drawings are relevant for the entire LC200 series modems.
Figure 2. LC200 modem front view - dimensions
75.20
83.70
79.28
32.90
30.60

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Figure 3. LC200 modem side view - dimensions
75.20
83.70
79.28
32.90
30.60

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
DIN Rail Mount
Figure 4. Mounting LC200 to DIN rail Figure 5. Removing LC200 from DIN rail
The LC200 has an integrated DIN rail mount housing which allows the unit
to connect on to the standard rail widely used for mounting industrial control
equipment inside equipment racks. This has been adopted as a European (EN)
and International (ISO) Standard.
Hook the bottom modem DIN rail clip onto the
bottom of the DIN rail
Push modem 45° until the top DIN rail clip locks
onto the top of DIN rail
1
2
1
2
Mounting the LC200 Removing the LC200
Slide DIN rail clip upwards
Pull modem 45° until the top DIN rail clip unlocks
from the top of DIN rail
Slide modem down, until bottom DIN rail clip
unlocks from the bottom of the DIN rail
1
2
1
2
3
3
1:1 @ A3 Sheet Size
A B C D E F G H I
7
6
5
4
3
I H G F E D C B
2
A
1
AMENDMENTS
JOB NUMBER
Concept
DRAWING TITLE
STATUS
PROJECT INFO
UK
COPYRIGHT WARNING
These drawings and designs remain
the property of Sequoia Technology
Group. Any unauthorised use will
render the offender liable for damages.
ALL DIMENSIONS ARE IN Millimeters UNLESS OTHERWISE
STATED
SA11214
4.0
Complete assembly
Robustel Enclosure
Mounting
Siretta
06/02/2014
B.Hulman
DRAWING: X:\Sequoia Design\Siretta\Robustel Module\ Robustel Assembly
MODEL: X:\Sequoia Design\Siretta\Robustel Module\ Robustel Assembly
DESIGNER
26/08/2014
ISSUE DATE
DO NOT SCALE OFF DRAWING
EMAIL [email protected] FOR DXFS OR OTHER
SCALABLE FILES.
Page No: 08 /08
GENERAL NOTES:
PART NUMBER
REV
SCALE
4.0_Updated colour and added silk
screen_28/03/14_BH
3.0_Adjusted to suit findings from 3D
print prototypes. Added
logo._12/03/14_BH
2.0_Revised as per drawings supplied by
supplier_03/03/14_BH
1.0_Preliminary issue_07/02/14_BH
1:1 @ A3 Sheet Size
A B C D E F G H I
7
6
5
4
3
I H G F E D C B
2
A
1
AMENDMENTS
JOB NUMBER
Concept
DRAWING TITLE
STATUS
PROJECT INFO
UK
COPYRIGHT WARNING
These drawings and designs remain
the property of Sequoia Technology
Group. Any unauthorised use will
render the offender liable for damages.
ALL DIMENSIONS ARE IN Millimeters UNLESS OTHERWISE
STATED
SA11214
4.0
Complete assembly
Robustel Enclosure
Mounting
Siretta
06/02/2014
B.Hulman
DRAWING: X:\Sequoia Design\Siretta\Robustel Module\ Robustel Assembly
MODEL: X:\Sequoia Design\Siretta\Robustel Module\ Robustel Assembly
DESIGNER
26/08/2014
ISSUE DATE
DO NOT SCALE OFF DRAWING
EMAIL [email protected] FOR DXFS OR OTHER
SCALABLE FILES.
Page No: 08 /08
GENERAL NOTES:
PART NUMBER
REV
SCALE
4.0_Updated colour and added silk
screen_28/03/14_BH
3.0_Adjusted to suit findings from 3D
print prototypes. Added
logo._12/03/14_BH
2.0_Revised as per drawings supplied by
supplier_03/03/14_BH
1.0_Preliminary issue_07/02/14_BH

A member of the Olancha Group Ltd
Registered in England No. 08405712
VAT Registration No. GB163 04 0349
Siretta Ltd
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Reading
Berkshire RG7 1PW
sales
fax
email
web
[phone]
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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
LC200 Series Images
Figure 8. LC200 - DIN rail mounted
Figure 7. LC200 power, USB & RS232 interfacesFigure 6. 3D view of the LC200

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
LC200 LED Indicator
The LC200 has 1 LED output that easily indicates the functional/operational state of
the modem.
Table 2. LED status
Name Colour Status Description
POWER Green ON LC200 is powered on
POWER Green OFF LC200 is powered off
Figure 9. LED
Green LED

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
Table 3. Modem states (assume AT#SLED=2*)
Current Modem State Input Next state Indication of new state
Power Off Connect power Run Mode Green LED will be on
continuously
Run Mode Insert a valid SIM card On Network Green LED will be on
continuously
On Network Remove power Power off No activity on LED
Run Mode Remove power Power off No acitivity on LED
Power Off Connect power Run Mode Green LED will be on
continuously
Run Mode Insert a valid SIM card On Network Green LED will be on
continuously
NOTE - Normal Operation: When the modem is rst switched on with a valid SIM card, the
green LED will be on continuously. The modem will attempt to join a network and should take
about 10-15 seconds (this may vary considerably) whilst the modem searches for the network.
During this period you can determine the registration status of the network using the AT
command ‘AT+CREG?’ which will return one of 5 states as shown below:
+CREG: 0,1 – Indicates that the modem is registered to the home network
+CREG: 0,2 – Indicates that the modem is searching for a network
+CREG: 0,3 – Indicates that the modem has been denied network access
+CREG: 0,4 – Indicates that the modem has a network problem
+CREG: 0,5 – Indicates that the modem is registered to a roaming network
If the response ‘+CREG:0,2’ is returned for a long period of time (more than 5 minutes) then
this suggests that there may be a problem with the SIM setup, the network signal or the
antenna connection.
The current modem state and function is shown below in table 3.
Modem States

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LC200 Series
GPRS/UMTS Wireless Modem with
RS232 Interface
RS232 Serial Port Interface
The modem can be congured by the RS232 connection using the linkCONNECT
Conguration Utility.*
Pin Name Direction Status Direction
1DCD Output from UART that indicates the carrier is present Connected OUT
2RXD Output transmit line of UART Connected OUT
3TXD Input receive line of UART Connected IN
4DTR Input to UART and controls DTE ready condition Connected IN
5GND Ground Connected IN
6DSR Output from UART that indicates the module is ready Connected OUT
7 RTS Request to Send - Input line of UART that controls hardware ow control Connected IN
8 CTS Clear to Send - Output line of UART that controls hardware ow control Connected OUT
9 RI Ring Indicator - Output line of UART that indicates the incoming call condition Connected OUT
Table 4. Pin usage
Figure 10. RS232 serial port
RS232 port
Figure 11. Pin numbering
5
9
1
6
Interfaces
*See ‘linkCONNECT Software Manual’ for more information on the Conguration Utility.