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6.3.96
GSM M1 Module, English: A24859-N4000-A100-1-7677
gsm-m1-e.fm
GSM
Module M1
Data
Fax
SMS
V.24
User Guide
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.ivz Contents GSM Module M1 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Notes on safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Description of the interfaces . . .
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.ivz Contents Technical reference section The AT standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 AT command line prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Connecting to your GSM module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Command syntax of the AT standard . . . . . . . . . .
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.ivz Contents AT+C commands for GSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 AT+CGMI - Request manufacturer ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 AT+CGMM - Request model ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 AT+CGMR - Request revision ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.ivz Contents The S-registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 ATSn? - Read an S-register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 ATSn=x - Write to an S-register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Binary and decimal values in S-registers . . . . . . . . . . . . . . . . . .
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm GSM Module M1 Product description The GSM module is a GSM terminal for transmitting data, faxes and SMS (short mes- sage service) text messages in GSM networks (GSM = global system for mobile com- munication). The GSM Module M1 comprises the following components: • GSM transceiver; • Data and power supply unit; • Serial interface (V.24) for data transmission and control; • Manufacturer-specific interface for DC power supply, e
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm GSM Module M1 Description of the interfaces The GSM Module M1 has interfaces for the power supply, for control and data trans- mission, for an external antenna and for a SIM card as well as an LED that indicates operating statuses. These interfaces will be described below. For a detailed description including pin assignment, see the section entitled “Technical data” . SIM card The GSM Module M1 must have a SIM card to operate
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Mounting the module Two standard options are available for mounting the GSM Module M1 : • Retaining clip •Velcro Before applying the velcro, make sure that the surface of the M1 (recess provided in center of base) and the corresponding surface are free of dust and oil. The mounting location must comply with the following environmental conditions: • Temperature range -20 °C – +55 °C for full operability •
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Overvoltage / undervoltage Correct operation of the M1 in send mode cannot be guaranteed if input voltages fall below 8 V. When input voltages exceed 32 V, the supply voltage is disconnected in order to pro- tect the electronic components from an overvoltage. Input voltages >100 V destroy the module. Protection / on-board network connection When installed, the M1 must be protected by a medium time-lag fu
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup In order to test the interface and your settings, enter AT. The GSM module should then respond with OK. If it does not do so, configure a different interface in the communi- cation program and try again. Also check the cable. When this test has been success- fully completed, check the functionality of the GSM module by entering AT&T1. This command activates a test loop. From now on, all the characters en
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Registering in the GSM network / PIN entry In order for the GSM module to access the GSM network, you may have to enter the PIN for the SIM card. You can do this using the AT+CPIN=....” command. T “ he AT+CPIN? command allows you to inquire whether or not you must enter a password and what type of password must be entered. The following blocks are possible: • PIN or PUK • Device code or PUK of the devi
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Enter: AT&F Loads factory configuration. GSM module OK Enter: ATD The dial command M1 Dials the telephone number and informs you when it is successful. CONNECT xxxx "xxxx" is the baud rate for the connection. The GSM module is now operating in transparent mode, i.e. entries you make via the keyboard are transmitted to the distant end. Pause Enter: +++ Interrupt command: Press the “+“ key three t
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Connection cannot be set up A number of factors can prevent connection setup. Own errors • No SIM card in the module. • The PIN or another block is not unblocked. • The GSM data module is not registered, i.e. it has not or has not yet been able to register in the network. • The M1 was manually set to an unavailable network operator by means of +COPS=1. • The M1 was signed off of the network by means of
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Installation / startup Incorrect characters on screen • Duplicate characters on screen Cause: Your communication program is set to half-duplex or echo. Remedy: Enter ATE0 to deactivate command echo in command mode or deactivate the echo in the communication program. • Only the characters from the distant station are incorrect Cause: The GSM module’s data format does not match that of the distant sta- tion. Remedy: Set the param
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Overview of AT commands General AT commands A/ Repeat previous command line +++ Switch to command mode when connected ATA Answer call ATDx Dial the dial string "x" ATDIx Dial ISDN number "x" ATDL Redial last telephone number used ATDS=n Dial stored telephone number ATE0 Disable command echo ATE1 Enable command echo ATH Disconnect existing connection ATIn Display product data ATI0 Display product code for GSM module ATI1 Display
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Overview of AT commands AT&Zn=x Store telephone number "x" in memory "n" AT%Dn Automatic dialing with DTR AT+ Fax commands GSM AT commands (GSM 07.07) AT+CGMI Display manufacturer ID AT+CGMM Display model ID AT+CGMR Display version of GSM module AT+CGSN Display serial number (IMEI) AT+CHUP Terminate all calls AT+CEER Display reason last call was disconnected AT+CMEE Extended error messages to GSM 07.07 AT+CREG Display registrati
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Technical reference section The AT standard With the development of intelligent modems, an command language was introduced in the U.S. called the AT standard. Over the past few years, this language has been con- sistently enhanced and has gained international acceptance. Most modems and com- munication programs work with this command language or can be set to use it. AT command line prefix The AT standard is a line-oriented com
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Technical reference section • The character can be followed by a character but this character will be ignored by the GSM module. Sample command lines: ATH ATS7?Q0E1 ATD0123456789 • When making corrections, use the Backspace key or Ctrl-H to delete the character to the left of the cursor. • The command line is not executed until the character is received. Loading the factory configuration and displaying a configu
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26.2.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Technical reference section Overview of the short and long result code formats Short Long code Meaning code 0 OK Command executed, no error 1 CONNECT Connection set up 2 RING Ringing signal detected 3 NO CARRIER Connection not set up or disconnected 4 ERROR Incorrect command or command too long. The AT+CMEE= 2 command allows you to display extended error messages to GSM 07.07. 6 NO DIALTONE Connection cannot be set up. 7 BUSY
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6.3.96 GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm Technical reference section Setting up and clearing down connections Once you have read through this section, you will be able to use your GSM module to- gether with your communication program to perform the following functions: • Interrupt a connection using the escape command. • Go off-hook. • Set up a connection by manually dialing the telephone number. • Store a telephone number. • Dial a stored telephone number. • Answer a
