Maestro Industrial User Manual rev1.5
Contents
1. Abbreviation Description 2G 2nd Generation of Mobile phone technology In developed and in some developing economies the current state of digital mobile communications development is 2 5G Usually refers to GPRS or EDGE technology Mid way point on path to true 3rd generation 2 5G mobile communications Enables WAP communication and some low speed compared to fixed line data transfer 3rd Generation mobile communications The long awaited generation of mobile comms 3G development incorporating broadband wirelss access to data services This enables new applications such as mobile entertainment and expanded types of mobile business ASCII American Standard Code for Information Interchange Bit Binary digit the smallest unit of data BS Base Station BSC Base Station Controller BTS Base Transceiver Station Byte Eight Bits that represent one character Calling Line System that identifies the Calling line to the device ID CLI being called Carrier Company that provides public or private communication networks CDR Call Detail Record Basis of telecoms billing Cells Basic areas that make up cellular networks Circuit Physical path of channels between two points that carry a current the telephone call CSD Circuit switched data CLI Calling Line Identification CPU Co Processor Unit CSD Circuit Switched Data DTMF Dual Tone Multi Function touch tone dialling ETSI European Telecommunic2. Option Primary Data Port Secondary Data Port Auxilliary Port Side View Connector Interface Connector Interface Connector Interface Men 1 DB9 RS232 RJ45 4xlnputs O O fo 2 DB9 RS232 RJ45 RS232 O O pal i 3 RJ45 RS232 RJ45 RS232 RJ45 4 x Inputs j n mdf Lun mi E 4 RJ45 RS232 RJ45 RS232 RJ45 RS232 it LL y LLU 5 DB9 RS232 Terminal RS485 O O H L 6 RJ45 RS232 Terminal RS485 RJ45 4 x Inputs RS232 RS232 00000 8 DB15 Audio RJ45 4x Inputs O 00000 O Pinouts All pinouts are looking into the connector on the modem with the antenna connector pointing right 6 9 DB 9 Female o medyc DB15 Female DB25 Female 0000000000 90900000006 X RJ45 8 Terminal A U Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 3 5 Block diagrams of Different Port Options Option 1 Processor COM1 COM2 4 Digital Inputs TTL to RS232 o Wn 0000 oo0000 O Option 2 Processor COM1 COM2 TTL to TTL to RS232 RS232 oooo 0 2820 Option 3 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited Processor COM1 COM2 4 Digital Inputs wu lau Option 4 Processor COM1 COM2 TT R uw ul lamn
3. A 3 j a 3 4 12V a MODEM MAINS O A a 12V Batt Hf R MAINS ee Charger n iB 12V l MODEM O Please note that the Low voltage DC supply must be capable of supplying at least 12VA This means that at 12V the supply must be able to supply 1A This is not the continuous current that the Maestro Industrial requires but the pulses required when the modem is in communication during a download Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 6 OUTLINE DIMENSIONS AND FIXING DETAILS Top three guarter view LED indicators Mains terminals MN 35mm Data and telemetry port SMA Antenna connector Bottom three guarter view DIN rail clip Mains terminals SIM card holder Low voltage DC input Fixing is via the DIN rail clip mounted on the bottom of the casing Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited The Maestro Industrial can be mounted onto TS 35 x 15 or TS 35 x 7 5 DIN rail 7 OTHER SPECIFICATIONS 7 1 Physical Size 78mm x 160mm x 35mm Weight 725g Casing material Metal alloy Temperature rating 20 C to 60 C Humidity Up to 90 RH non condensing 7 2 Manufacturer s Type Number The current type number for the Maestro Industrial is V SMGR
4. Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited Option 5 COM1 COM2 Oooo o sad Processor Option 6 Processor COM1 COM2 4 Digital Inputs r Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited Option 7 Processor COM1 COM2 4 Digital Inputs TTL to RS232 O 0020000000000 0000000000000 Option 8 Processor COM1 Audio 4 Digital Inputs TTL to RS232 O0000 i O YD Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 3 6 The Primary Data Port COM1 The Primary Data Port is available under all the port options Pinouts are as follows DCD Data Carrier Detect Output 1 1 8 1 RX Receive data Output 2 6 3 2 TX Data Transmit Input 3 2 2 3 DTR Data Terminal Ready Input 4 8 20 4 GND Ground Input 5 9 7 5 DSR Data Set Ready Output 6 7 6 6 RTS Ready to Send Input 7 12 4 7 CTS Clear to Send Output 8 11 5 8 RI Ring Indicator Output 9 13 22 In addition to the above table the DB25 and DB15 connectors also interface to the auxiliary port IN1 Input 1 Input 14 IN2 Input 2 Input 15 IN3 Input 3 Input 16 IN4 Input 4 I
5. empowering wireless Maestro Industrial Series GSM GPRS Modems USER MANUAL Rev 1 5 www maestro wireless com Email contact maestro wireless com Tel 852 2869 0688 Fax 852 2525 4701 Address Room 3603 3609 36 F 118 Connaught Road West Sheung Wan Hong Kong This manual is written without any warranty Maestro Wireless Solutions Ltd reserves the right to modify or improve the product and its accessories which can also be withdrawn without prior notice Besides our company stresses the fact that the performance of the product as well as accessories depends not only on the proper conditions of use but also on the environment around the places of use Maestro Wireless Solutions Ltd assumes no liability for damage incurred directly or indirectly from errors omissions or discrepancies between the modem and the manual Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited TABLE OF CONTENTS TABLE OF COM EN CO I AF EEEE EEEE 3 1 INTRODUGHON WN YR NR YN YP FY EW Y WYW FFR PRAWF FYN Y HR YR Y FFO 5 11 si re je ERE O OI I AE I 5 1 2 Scope ot This Mantal au RR A eRe AEO 5 2 MAESTRO INDUSTRIAL orense io YN GU aE GO FYNO On RR YR 6 2 1 A Modem and Telemetry Device in One 22 ccccccccceceeeeeeeeneeseseeeseneeeeeeeees 6 2 2 Functional Diagram showing the Operation of the Maestro Industrial 6 2 3 Functional Components of the Maestro In
6. delays do not interfere with the communication in any way and only affect the time that the respective LEDs are lit 3 4 The Ports The Maestro Industrial has three ports available in a number of configurations 1 Primary data port 2 Secondary data port 3 Auxiliary port The different combinations of these ports are possible with the appropriate internal daughterboard option Not all the ports may be accessible in all the configurations In the simplest configuration the Maestro Industrial will have a DB9 female on the primary data port and an RJ45 with four inputs on the auxiliary port The data ports support asynchronous communications Full handshaking is only available on the Primary data port on the DB9 DB15 and DB25 connectors The primary port does not support MARK or SPACE parity and is limited to a maximum of 57600 baud Only RX TX RTS CTS are supported on the RJ45 connectors The primary data port and the secondary data port work independently from each other and may have different character framing and baud rates The auxiliary port may be used as a third RS232 port slaved to the secondary data port or as a telemetry port with four digital inputs Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited Port Options
7. until registered If the 0 5 response was received then the modem is registered on a foreign GSM network This could happen close to international border There may be substantial financial implications if communication takes place through a foreign network even if the modem only receives the calls Check the signal strength Type in the command AT CSQ The response should be at least CSQ 10 0 the 10 indicates signal strength and this result value should be better than 10 The O result value is an indication of the bit error rate on the radio interface and should be a value from O to 7 If this value is 99 it means that the modem has not been able to resolve the error rate The modem performs automatic error correction on the radio interface so the bit error rate is not a critical value and can be ignored The important result value is the signal strength Set the automatic answer Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited Type in the command ATSO 2 The response should be OK Set the incoming bearer type Type in the command AT CICB 0 The response should be OK Save the settings Type in the command AT amp W The response should be OK Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 12 3 Troubleshooting 12 3 1 No LEDs come on Check if the voltage selector switch is in the appropriate posit
8. 600 baud This is necessary in order to be able to talk to the modem which will now be set to 9600 baud Open the COM port again Check if a PIN number is reguired for the SIM card Type in the command AT CPIN If the response is CPIN READY Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited carry on to the next section If the response was CPIN SIM PIN the Modem reguires a PIN number first Issue the PIN number as follows AT CPIN 00000 For the default PIN number of 00000 If the PIN number is different use the number you received with the SIM card You should now get the response OK Disable the PIN with the following command AT CLCK SC 0 00000 Where the 00000 is the default PIN number Use the supplied PIN number if different from 00000 The response should be OK Important If you type in the wrong PIN number three times you will have to unblock the card using the PUK number The easiest way is to use your cell phone to unblock the SIM Check if the modem is registered on the GSM network Type in the command AT CREG If the response is CREG 0 1 carry on to the next section Other possible responses could be CREG 0 0 Searching for any network CREG 0 2 Network found busy registering CREG 0 5 Registered on a roaming network If the response is 0 0 or 0 2 then wait a while for the modem to register Try the command again
9. 7 13 87 29 55 14 85 30 53 15 83 31 51 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 10 EVENTS An event is a change in condition and where certain commands then needs to be executed 10 1 Startup event On startup the Maestro Industrial performs a startup script 10 2 Digital Input events Separate scripts are linked to the events where an input goes high on open or low off closed The delay times also known as the debounce times before the unit registers a change in input state can be configured More input output boards can be added to increase the total number of inputs and outputs 10 3 Timer events Separate scripts are linked to the events where a timer runs out There are 5 separate timers 10 4 Counter events Separate scripts are linked to the events where a counter reaches one of it s low or high levels There are 4 different counters each with it s own high and low levels 10 5 Serial events The Maestro Industrial can be configured to execute certain commands when data is received on the serial port Typical applications are tag readers and barcode scanners as well as a whole list of devices that sends out unsolicited serial data Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 11 TELEMETRY WITH THE MAESTRO INDUSTRIAL Please contact Maestro Wireless Solutions for the lat
10. Dy 22 7 LP SCAM atresia es 22 7 2 Manufacturers Type NUMER aacccsececccccsccencpencpeecenexeeassanorentenernceeteosieneeeneobeneecenes 22 7 3 Components Type Number ixiscissnsscdcavetenteancacicdsnlouaseeaenudesndusdteuadeietnasenoiusonnin 22 DA Ordening FE OI aea a EP FFF REC E N FN RF FF EF DYN 22 8 ELEC TRICAL SPECIFICATIONES die Gi dig GG nd A Tno 23 9 SIGNAL STRENG N au PF naana TY Fr HR FT F 24 10 EVENTS FN OR SF RR FF FYN FE FE FR FU A FY YF FD FY E FYN 25 A Ee e in FF _ HR FF CAF CE RC SR FFA RF FN FFF TEA A 25 10 2 Digital Inpul GVeTilS eu Au Da UC sy DOG Oy Cf DO 25 10 3 Timer events ssiri CW FFF RF FFF HF FE NENN FEN FFF FYR 20 10 4 Counter events Y Y eect TH NC NEN NENN ee 25 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 10 5 Serial eventSoeeon nu o A FY NT cer TAA 25 11 TELEMETRY WITH THE MAESTRO INDUSTRIAL uieeeeueueu e e r eine rn iii 26 12 SERVICING THE MAESTRO INDUSTRIAL Sui GT CI dann Nu 9 OD RWYD a inane 27 12 1 Powering up the Maestro Industrial ccc ceeeceeceeeeeeeeeeeeeeeeeseeeeeeeeeeneaaaaaaas 27 12 Using Maine SUPP yira aeaa aaa e AEA Sead land CON DA DOR 27 12 1 2 gt Using OC Supply arira ea EA L Ry dad mL YN Cd DON y GC Yd ndd 27 12 2 Configuring the Device 3 620 ae een mc oid oY Y OA odid ee 27 12 3 Troubleshooltinigounee ee ei ioe oad eee Gi le 30 123 1 No LEDS COME ON uu
11. FRG 2 0 0 The device is also distributed in other territories Africa Europe Far East under the trade name Maestro Industrial 7 3 Components Type Number There are 8 different daughterboards that give the Maestro Industrial different interface options The type numbers for these options are as per 3 4 e Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 Option 7 Option 8 7 4 Ordering To order user the model number V SMGR FRG 2 0 0 together with the option type for instance V SMGR FRG 2 0 0 Option 1 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 8 ELECTRICAL SPECIFICATIONS Power supply Input Min Max Mains AC 85VAC 264VAC Mains DC 110VDC 370VDC Low voltage DC 8VDC 30VDC Antenna Connector Type SMA Gender Female Impedance 500 Data Port dependent on data port adapter option Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 9 SIGNAL STRENGTH The following table relates the signal strength indicated by the YAT software to dBm RSSI dBm RSSI dBm 0 113 16 81 1 111 17 79 2 109 18 17 3 107 19 75 4 105 20 73 5 103 21 71 6 101 22 69 7 99 23 67 8 97 24 65 9 95 25 63 10 93 26 61 11 91 27 59 12 89 28 5
12. RIAL 2 1 A Modem and Telemetry Device in One The Maestro Industrial is a GSM GPRS terminal intended to be used in industrial telemetry applications Even though the Maestro Industrial can act like a GSM modem it offers much more in terms of communications inputs and event based programming By using simple commands the Maestro Industrial can switch between using CSD circuit switched data calls or GPRS to communicate with a device on the serial port Four fully programmable inputs timers counters and other events provide a very powerful and future proof solution for industrial communications 2 2 Functional Diagram showing the Operation of the Maestro Industrial The Maestro Industrial operates in the following modes 1 Modem mode 2 Command Mode Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited The default mode of the Maestro Industrial is modem mode and the Maestro Industrial will always revert to modem state after a timeout period In modem mode the Maestro Industrial accepts normal AT commands like a GSM GPRS modem In this mode events such as inputs will trigger the program scripts associated with them Command Mode is used to access the telemetry features and to program the scripts associated with events The Maestro Industrial will not remain in Command Mode and will automatically revert back to AT Mode after some time of inactivity 2 3 Functional Compo
13. ations Standards Institute www etsi fr Fax Telecoms system that allows a hard copy of a document to be sent and received over analogue or digital telephone lines GMSC Gateway Mobile Services Switching Centre GPRS General Packet Radio System GSM Global System for Mobile communications The most commonly used standard for digital mobile communications IMSI International Mobile Subscriber Identity IP Internet Protocol Protocols for software that tracks Internet addresses MS Mobile Station MSISDN Mobile International Subscriber Directory Number Operators Telecoms network operators os A computer s Operating System PABX Private Branch Exchange a private telephone switch that sits on the user s premises and switches calls to extensions POTS Plain old telephone services PSTN Public Switched Telephone Network QoS Quality of Service SMS Short Message Service SMSC Short Message Service Centre USSD Unstructured Supplementary Service Data signalling WAP Wireless Application Protocol Mobile comms standard for Internet connection Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 14 REVISION INFORMATION Date 2 August 2005 Creation 29 September 2005 Work in progress 7 March 2006 23 June 2006 3 Mars 2010 Author Tjaart van der Walt Tjaart van der Walt Tjaart van der Walt Tjaart van der Walt Tjaart van der Walt Tjaart van der Walt Tjaart van der Walt Versio
14. dustrial eeeeeeeeeeeeeeeeeees 7 2 4 Component layout diagram of the Maestro Industrial eeeeeeeeeeeeeeeeeees 8 3 FEATURES GG ANO LG ea a A EAEE a aa aeaa aaea 9 3 1 The Ultimate in Stability Comm Aliwel oo cccccccccccecceeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeeeeeeees 9 32 LED SAY EF NO E S EF FN FY NHY 9 3 3 LED Time delays on RX and TX aeessssssssesssseerrrrrrrrrrrrrrrrsssssssssrrrrrrrrrrrnrrrrrr ren 9 Pe lln L gt aa erse Reet RHI Y Y RF 10 3 5 Block diagrams of Different Port Options ceeeeee eee eeeeeeeeeeereeeeeeeeeeeeeeeees 12 3 6 The Primary Data Port COMA uu nia GN aid y yT FO 16 3 7 The Secondary Data Port COM2 2 c c cccncccssecctsecsnicancctsenensenadebenceectenessceee 16 3 8 Auxiliary Pam ProcesEor uc cei UE OU CU CO 17 3 8 1 RJ45 Data port slaved to Secondary Data Port eee eeeeeeeeeeeeeeeeeeeeeeeeees 17 3 8 2 RJ45 lt npul9 ei uid pe GOESAU TAN RODAF NN GON H RR 17 4 MAESTRO INDUSTRIAL WIRING DIAGRAMS c cc eceeeeeeeeeeeeeentee ELLYLL LL Fn FEL LLLnoo 18 4 1 Wiring a Maestro Industrial to an Electricity Meter eennnnnneinneeen 18 9 POWER SUPPLY GY emI FF HF CE Y HF Y FF Y NR YR Y RY Y RY deat 19 Ss LANC Mains ou pl cii DO Tn SA OT S 19 5 2 DC Supply Oy HE Ea AFR FFRTN AU 20 6 OUTLINE DIMENSIONS AND FIXING DETAILS 1 eee eee e eter eeneeeeeeeeeeeeeeeeaaaae 21 T WOTRIER SPECIFIC FIONA i Cn MAID GA UN
15. est available telemetry options Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 12 SERVICING THE MAESTRO INDUSTRIAL 12 1 Powering up the Maestro Industrial 12 1 1 Using Mains Supply Switch off or disconnect mains supply Insert SIM card Connect data or auxiliary ports Connect mains power to Maestro Industrial a fF ON gt Reconnect mains supply 12 1 2 Using DC Supply If connected to a DC supply switch the supply off or disconnect the DC cable Insert SIM card Connect data or telemetry ports BON Connect or power up DC supply 12 2 Configuring the Device All commands are typed in the terminal window of an application such as Windows HyperTerminal or preferably with Maestro YAT program available for downloading from the following site www maestro wireless com Start off with a test to see if the communications settings are the same between the modem and the terminal window If these settings are not the same you will not be able to communicate properly Type in AT and ENTER The modem should respond with OK If it does not respond with OK then there is a problem Refer to the Trouble Shooting section further in the document It is important that communication with the modem is established before continuing Close the COM port some terminal programs may call this disconnect and change the communication speed of the software to 9
16. ion for the supply Test the supply with an appropriate meter The values should be close to 115VAC for the 115VAC setting close to 230VAC for the 230VAC setting and between 10VDC and 30VDC if the DC backup supply is used optional If the measured voltages are all within range the modem may be faulty 12 3 2 Power LED and CTS LED come on but the GSM LED won t flash If the GSM LED does not start flashing after 10 or 20 seconds the modem cannot register This could mean that the GSM coverage is not adeguate try better antenna positions that there is a PIN number reguired for the SIM card remove it using the method described or that the SIM card is blocked by the GSM network or even faulty replace the SIM card 12 3 3 I get an OK for an AT lt 13 gt request but I can t program the modem You may be communication with another modem inside your computer A normal fixed line modem will respond almost the same as the Maestro Industrial but will give errors when certain GSM specific commands are given to it Try looking for the GSM device on another COM port 12 3 4 Calls are freguently dropped This is usually due to either a poor signal strength or to a backup supply with insufficient driving capacity when running from backup DC supply To test check the signal strength as follows Type in the command AT CSQ The response should be at least CSQ 10 0 the 10 indicates signal strength and this result value
17. n Comments 0 1 15 DISCLAIMER Maestro Wireless Solutions does not accept any direct or indirect liability for the use of any Maestro product The customer takes full responsibility for its use and any liability or damage that may arise from the use of the Maestro Wireless product NOTE This product is not designed nor certified for use as medical equipment or with medical equipment or with medical devices This product is also not designed or certified to be used with any medical services or medical related services Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited
18. nents of the Maestro Industrial The Maestro Industrial consist of the following functional components LV Supply Static RAM RAM SIM Card Please see Port Options Primary Port table for details Secondary Port 4 Digital inputs Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 2 4 Component layout diagram of the Maestro Industrial SIM card holder LEDs Low voltage DC connector Data interface Daughterboard Mains d9nnector High voltage power supply mains Telemetry processor with RAM Flash GSM GPRS module Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 3 FEATURES 3 1 The Ultimate in Stability Cemm Alive Telemetry users know that their devices are often in remote or inaccessible areas The last thing they can afford is to have to continuously visit a number sites to reset these devices There are four major causes of failures in GSM based telemetry 1 Lockups between modem and GSM network 2 Unterminated data calls 3 Loss of network authentication 4 Unknown network or modem status By using proven and patented technology the Maestro Industrial is kept as stable as possible Depending on the customer s preferences on order the modem will reset under any of the following conditions 1 Every 24 hours only if not in data call 2 If a data call is unterminated for longe
19. nput 17 Mic Microphone Input 4 Mic Microphone Input 5 Speak Speaker Output 10 Speak Speaker Output 15 3 7 The Secondary Data Port COM2 The pinouts are as follows DCD Data Carrier Detect Output 1 RX Receive data Output 2 6 TX Data Transmit Input 3 2 DTR Data Terminal Ready Input 8 GND Ground Input 5 9 RTS Ready to Send Input 7 12 CTS Clear to Send Output 8 11 RI Ring Indicator Output 13 A RS485 A B RS485 B Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 3 8 Auxiliary Port Processor 3 8 1 RJ45 Data port slaved to Secondary Data Port DCD Data Carrier Detect Output RX Receive data Output 2 TX Data Transmit Input 3 DTR Data Terminal Ready Input GND Ground Input 5 RTS Ready to Send Input 7 CTS Clear to Send Output 8 RI Ring Indicator Output 3 8 2 RJ45 Inputs NC Do not connect 1 Input 1 Input 1 Short to pin 8 to trigger 2 Input 2 Input 2 Short to pin 8 to trigger 3 NC Do not connect 4 Input 3 Input 3 Short to pin 8 to trigger 5 Input 4 Input 4 Short to pin 8 to trigger 6 NC Do not connect 7 Common Inputs common 8 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 4 MAESTRO INDUSTRIAL WIRING DIAGRAMS 4 1 Wiring a Maes
20. r than 1 hour 3 If the modem loses GSM network authentication for longer than 10 minutes If the modem is in a data call when the 24hr reset cycle starts the modem will wait for 10 minutes before resetting The default reset options are 1 Every 24 hours only if not in data call 2 If the modem loses GSM network registration for longer than 10 minutes 3 2 LED Display A display of ten LEDs offers a powerful troubleshooting and verification function Off Not powered On Powered On solid Searching GSM Network GSM Network state Short Flash Logged on network Long Flash Busy in data call Power Power present TX Transmit On Meter transmits data RX Receive On Meter receives data DTR Data Terminal Ready On Meter ready DSR Data Set Ready On Modem ready RTS Reguest to Send On Meter ready to transmit data CTS Clear to send On Modem ready to accept data RI Ring Indicator Flash Ring waiting to answer DCD Data Carrier Detect On Busy in data call 3 3 LED Time delays on RX and TX At 9600 baud the bit lengths are only 104us 0 000104s long and virtually impossible to see with the human eye To enable the user to be able to see when the meter transmits and Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited received data short delay of around 200ms 0 2s have been added to the RX and TX LEDs These
21. should be better than 10 The O result value is an indication of the bit error rate on the radio interface and should be a value from O to 7 If this value is 99 it means that the modem has not been able to resolve the error rate If the signal strength is lower than 10 try relocating the antenna to a higher position If you are using a magnetic mounting antenna try mounting the antenna on a metal plate A high gain antenna like a yagi may also solve the problem If the Maestro Industrial is running from a DC Backup supply and signal strength is high check the supply capacity as follows 1 Disconnect the modem from the Backup supply Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 2 Connect 8 x 1000 SW wirewound in parallel to create a resistor array for a dummy load 3 Connect the dummy load to cables at least 1m long each 4 Connect the cables to the output of the Backup supply and measure the voltage across the terminals at the dummy load 5 Disconnect the cables immediately after measurement 6 Take extreme caution as the dummy load will become hot enough to cause 3 degree burns or start a fire if left unattended The voltage measured across the dummy load should be 12V or higher Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 13 GLOSSARY
22. tro Industrial to an Electricity Meter Input 4 Input 3 Input 2 3 Input 1 7 Potential free contacts Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 5 POWER SUPPLY 5 1 AC Mains Supply The Maestro Industrial may be powered from 90VAC to 265VAC The mains supply is connected to the terminal block as shown in the following picture Earth Live Important Notices Even though the Maestro Industrial will operate without an earth connection this should always be connected for safety reasons Ensure that the supply wires are inserted and fixed in the correct terminals Always use SABS approved mains cables Do not use frayed cables Please take care when connecting the mains supply as the possibility of an electric shock exists if the installer inadvertently touches the live or neutral wires or connects the supply to the wrong terminals Always take all relevant safety precautions If you are unsure about this please contact a gualified person to connect and secure the mains connections Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 5 2 DC Supply 10V 15V An optional Low voltage DC Supply Cable allows the integrator to configure the Maestro Industrial in such a way that a backup battery can keep the modem alive after loss of mains supply
23. ue ind CC CD Dy DY ANAFU NR ANCR RNA DAR RR 30 12 3 2 Power LED and CTS LED come on but the GSM LED won t flash 30 12 3 3 get an OK for an AT lt 13 gt request but I can t program the modem 30 12 3 4 Calls are frequently dropped Y YY YLYYYLL YY YY LLY ELLY EY YY ELLYLL LEL nnno 30 a Re ic SS A HE O e WW TWR yH 32 14 REVISION INFORMATION GYR FR RAN CDY D GR oU SLAB cxtausartnranshaduadesiieadeaaeinlabas 33 15 DISCLAIMER mw GY ROD Fyd YWEN GU GC dd AN ydd on YS 33 Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 1 INTRODUCTION 1 1 Background This manual serves as a reference for users of the Maestro Industrial The Maestro Industrial is a GSM GPRS device used in applications where data must be returned from some or another remote device with a serial port The Maestro Industrial is capable of both translating between a serial communications and GPRS and acting like a standard AT driven GSM modem Four digital inputs can be programmed with a large number of commands to perform some or another action when triggered 1 2 Scope of This Manual The following aspects of the Maestro Industrial are covered Features Power Supply Mounting Interfaces Events Programming AT Programming Confidential the whole present document is the sole property of Maestro Wireless Solutions Limited 2 MAESTRO INDUST
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