Related Manuals for Campbell Siemens TC35T GSM
Summary of Contents for Campbell Siemens TC35T GSM
- Page 1 Siemens TC35T GSM Digital Transceiver Instructions for Use With Campbell Scientific Dataloggers Issued 11.12.03 Copyright 2003 Campbell Scientific Ltd.
- Page 3 Note that goods sent air freight are subject to Customs clearance fees which Campbell Scientific will charge to customers. In many cases, these charges are greater than the cost of the repair. Campbell Scientific Ltd,...
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Page 5: Table Of Contents
3.3 SC32A Interface....................5 4. Power Supply..............6 5. Antenna – General Notes ..........6 5.1 Antenna Supplied by Campbell Scientific............7 6. Configuring the TC35T for use with a Datalogger..9 6.1 Setup ......................... 9 6.2 Configuration for the GSM Network .............. 10 6.3 Base Station .................... - Page 6 D.2 The Problem Explained..................1 D.3 Solutions ......................1 Figures 1. Connection of SC932C to TC35T ...............4 2. Connecting the TC35T to a Datalogger ...............5 3. Connection of SC32A to TC35T .................5 4. Antenna Supplied by Campbell Scientific ............8 Tables 1. TC35T Power Supply Connections..............6...
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Page 7: Introduction
Campbell Scientific dataloggers. More comprehensive technical details of the unit can be found in the Siemens TC35T hardware and software manuals. These manuals are not supplied by Campbell Scientific with each TC35T as standard, but are available for download (in Adobe Acrobat format) from Siemens Web Site (www.siemens.com/wm). -
Page 8: Network Coverage
The network maintainer will be able to offer advice on coverage problems. Campbell Scientific can also offer further advice on suitable antennae to suit the application. -
Page 9: Call Charges
GSM phone and following the instructions contained in the phone manual. If a separate phone is not available, please contact Campbell Scientific for details of how to disable the PIN code for use with the TC35T. If this is not possible, or if your airtime provider only allows operation with a PIN enabled, please refer to Appendix A. -
Page 10: Connection To A Datalogger
PIN number. Check the documentation that came with your SIM. 3. Connection to a Datalogger To enable normal operation of all Campbell Scientific peripherals which might share the 9-way serial I/O port on the datalogger (e.g. Storage Modules), it is necessary to use an interface between the datalogger and the TC35T. -
Page 11: Sc932 Interface
Using with Campbell Scientific Dataloggers TC35T Cable (SC932C to 9-pin) SC932C Interface (see Figure 1, above) Blue SC12 ribbon cable TC35 Connect to 9-pin socket Connect to 9-pin 9-pin 25-pin on TC35T ‘CSI’ socket on datalogger Diagram Not to Scale Figure 2 Connecting the TC35T to a Datalogger 3.2 SC932 Interface... -
Page 12: Power Supply
Siemens models, and cannot be used to turn the unit on and off. For units supplied by Campbell Scientific, this line is tied to the positive supply and a power switch is incorporated in the cable to allow the datalogger to turn the unit on and off via a wire connected to one of its control ports. -
Page 13: Antenna Supplied By Campbell Scientific
• If the antenna is placed near the top of a mast it may be vulnerable to lightning damage. If lightning is common at the installation site, additional lightning protection may be required to protect the TC35T – please contact Campbell Scientific for further advice. -
Page 14: Antenna Supplied By Campbell Scientific
The dipole design of the antenna means that no ground plane is required, thus allowing more flexibility in mounting. Avoid mounting the antenna close to other vertical metal structures or on flat metal surfaces. Higher gain YAGI style antennas are available from Campbell Scientific to special order. -
Page 15: Configuring The Tc35T For Use With A Datalogger
GSM module functions. 5. The default baud rate setting for the TC35T is automatic baud rate detection. You need to set this to fixed operation at 9600 baud for use with Campbell Scientific dataloggers. To change the setting type AT+IPR=9600. This will change the communications speed and write the setting to non-volatile memory. -
Page 16: Configuration For The Gsm Network
Siemens TC35T GSM Digital Transceiver 6.2 Configuration for the GSM Network The TC35T must be configured to work on the particular network for which its SIM is valid. These settings will probably have been pre-set by the supplier of your SIM. If not, refer to details in Appendix C or the Siemens TC35T operator’s manual with reference to the AT+CREG and AT+COPS commands. -
Page 17: Configuring The Tc35T As A Base Station Using Pc208W
TAPI line option that shows the installed modems. NOTE While Campbell Scientific Ltd may be able to give some advice as to the best settings to use for common modems, the connection of the landline modem to a cellular network is specific to the cellular network being used. -
Page 18: Ending A Call
Siemens TC35T GSM Digital Transceiver Campbell Scientific communications software includes other time-outs which are used to check for hung communications links. These are set to be quite short for land-based modems, as the response to any command sent from the PC should be almost instantaneous. -
Page 19: Datalogger Programming Hints
The power consumption of the TC35T system is much lower than older analogue cellphones, being typically 20mA while waiting for calls and <200mA when on- line. The TC35T, as supplied by Campbell Scientific, has a built-in power switch which allows the datalogger to turn off the TC35T. However, the TC35T will not answer any incoming calls when in this state. - Page 20 Siemens TC35T GSM Digital Transceiver ;Measure the logger battery voltage Batt Voltage (P10) 1: 1 Loc [ BattV ;and if it is > than 11.5 V turn on the TC35T If (X<=>F) (P89) 1: 1 X Loc [ BattV 2: 3 >=...
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Page 21: Preventing Tc35T Connection Problems
Using with Campbell Scientific Dataloggers interrupt disable flag has been set low. P97 will automatically set the flag high at the end of a successful call, which the P91 will detect at the next scan and turn the TC35T off. -
Page 22: The Base Station Fails To Get A Response From The Datalogger
If you still encounter problems it is also worth checking the firmware version of the TC35T module. Campbell Scientific has validated use with units with firmware revision: “3.00” (checked using instruction ATI). While later software revisions will probably be backwards compatible, older software may not work so well. -
Page 23: I Get Errors When Using The Tc35T With Storage Modules
Using with Campbell Scientific Dataloggers • If you manually dial the number with a phone and hear a buzzing noise rather than modem negotiation tones (beep and whistles) the SIM is configured to accept incoming digital (UDI) calls only - contact the SIM supplier. -
Page 25: Appendix A. Using The Tc35T With The Pin Security Feature Enabled
Appendix A. Using the TC35T with the PIN Security Feature Enabled It is possible to use the TC35T with Campbell Scientific dataloggers with the TC35T’s PIN (Personal Identification Number) feature enabled. However, this has the following disadvantages: • If the TC35T loses power momentarily, it will not answer further calls until the datalogger sends the PIN again as part of the normal program sequence. - Page 26 Use of the Siemens TC35T Digital Transceiver with Campbell Scientific Dataloggers ;{CR10X} ; An example program which shows how to turn the TC35T on and send ; a PIN code using Instruction P97 with the Generic Modem option. ; The power to the TC35T is controlled by Port 1 ;...
- Page 27 Appendix A. Using the TC35T with the PIN Security Feature Enabled Extended Parameters 4 Digit (P68) 1: 43 Option 2: 67 Option 3: 80 Option 4: 73 Option 5: 78 Option 6: 61 Option ;” - NOTE: the PIN code must be enclosed in double quotes 7: 34 Option ;6 This example uses a PIN code of 601141...
- Page 28 Use of the Siemens TC35T Digital Transceiver with Campbell Scientific Dataloggers ;and disable the PIN code transmission via P97, just in case it is still trying Do (P86) 1: 11 Set Flag 1 High End (P95) End (P95) *Table 2 Program...
- Page 29 Appendix A. Using the TC35T with the PIN Security Feature Enabled force the callback (once the first call is successful) or the AT+CPIN command can be incorporated in the normal dial string. Please contact Campbell Scientific if further advice on these techniques is needed.
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Page 31: Appendix B. Using The Tc35T With The Cr23X Or Cr5000 Dataloggers
These dataloggers also supports higher baud rates than are compatible with the TC35T compared to other current Campbell Scientific dataloggers. Using a higher baud rate will only have a small effect on the speed at which data flows from the CR23X back to the PC, as the limiting factor is the GSM network itself, which is currently limited to 9600 baud. - Page 32 TC35T. None currently do so in the UK. If you are sure that your network provides this facility (called V42bis compression) please contact Campbell Scientific for details of how to use higher baud rates and how to enable data compression in the TC35T. Compression can...
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Page 33: Appendix C. Details Of Useful Configuration Commands For The Tc35T
Appendix C. Details of Useful Configuration Commands for the TC35T This section gives details of some of the useful test commands that can be used during setup of the TC35T. These charts are taken directly from the Siemen’s manual and are reproduced here for convenience only. -
Page 34: Network Registration Checks
Siemens TC35T GSM Digital Transceiver C.2 Network Registration Checks AT+COPS Operator selection Test command Response TA returns a list of quadruplets, each representing an operator present in AT+COPS=? the network. Any of the formats may be unavailable and should then be an empty field. - Page 35 Appendix C. Useful Configuration Commands AT+CREG Network registration Test command Response AT+CREG=? +CREG: list of supported <n>s OK Parameter See set command Read command Response AT+CREG? TA returns the status of result code presentation and an integer <stat> which shows whether the network has currently indicated the registration of the ME.
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Page 36: Pin Configuration
Siemens TC35T GSM Digital Transceiver C.3 PIN configuration AT+CPIN Enter PIN Test command Response AT+CPIN=? Read command Response AT+CPIN? TA returns an alphanumeric string indicating whether some password is required or not. +CPIN: <code> OK If error is related to ME functionality: +CME ERROR: <err>... -
Page 37: Appendix D. Using The Tc35T With Storage Modules
Appendix D. Using the TC35T with Storage Modules This appendix explains problems that may occur when using the TC35T to communicate with storage modules connected to the datalogger and provides appropriate advice on how to work around such problems. D.1 Introduction If a datalogger in a remote station is connected to an TC35T and a storage module (SM192/SM716/SM4M or SM16M) at the same time, problems can occur when trying to read data from the storage module owing to transmission delays in the... - Page 38 Siemens TC35T GSM Digital Transceiver A disadvantage of this method, however, is that the sending/receiving of some commands can be much slower in half duplex mode, which can reduce the data throughput by as much as a third, depending on the delays in the network and the amount of data transferred.