Campbell COM111 Скачать руководство пользователя страница 31 | Manualshive

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Campbell COM111 Скачать руководство пользователя страница 31

Using with Campbell Scientific Dataloggers

19

cost antennae designed for vehicle mounting require a flat, metal sheet to
form a ground plane at the base of the antenna to achieve the specified
gain figure and to ensure proper impedance matching. As an approximate
rule the ground plane should have a radius equal to or greater than the
height of the radiator.



Slightly higher priced co-linear, or dipole antennae do not require such a
ground plane and can be more easily pole or cross-arm mounted.



In areas of poor signal coverage a directional, high-gain ‘Yagi’ antenna
can be considered, but this requires knowledge of where the cell base
stations are situated in order to enable proper alignment and often the
frequency the base station uses needs to be known to match the antenna
correctly.



Raising the antenna is often the most effective way of getting better
signal reception. However, if long cables are required to achieve this, use
low-loss extension cables that do not have the significant signal loss of
low cost cables. Long cables are a particular problem when operating at
1800MHz or above.



Like most cellular-based systems, the COM111 modem varies its
transmitter power to ensure good communications with the remote cell
station. Using a cheaper, low-gain, antenna may result in a significant
increase in power consumption in areas of poor signal coverage.



If the antenna is placed near the top of a mast or has long antenna cables
it may be vulnerable to lightning damage. If lightning is common at the
installation site, additional lightning protection may be required to
protect the COM111 modem – please contact Campbell Scientific for
further advice.

Using an antenna that is installed incorrectly, or with faulty
wiring, can lead to premature failure of the transmitter output
of the COM111.

Install the antenna so that the radiator is positioned away from other vertical
metal structures. It should also be at a distance from any sensors so that it
does not either physically or electrically interfere with the sensor readings.

Connect the aerial cable to the connector labelled “GSM”. The other
connector labelled “GPS” is not used.

If the COM111 modem can be connected to a PC (see below) it is possible to
check the received signal strength using the diagnostics option in the Mobile
Data Assistant package or using the

AT+CSQ

command in a terminal

program (see Appendix C for further details). This can be used to find the
optimum antenna position. You should aim to get the highest signal strength
(as close to 31) as possible. For reasonable communications you need a
minimum level of approximately 10 when operating in non-transparent mode
for GSM dial-up or 12-14 for data use. Be sure that the modem is configured
to talk only to the network operator you intend to use when doing this (see
the

AT+COPS

command).

CAUTION

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Содержание COM111

Страница 1: ...CS 3G Digital Transceiver Kits incorporating the COM111 modem Revision 4 19 Copyright 2000 2019 Campbell Scientific...

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Страница 3: ...under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs can be give...

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Страница 5: ...t for recycling Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific...

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Страница 7: ...beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit cl...

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Страница 9: ...systems with dynamic IP addresses 11 4 4 Minimising power use 12 4 5 Sending configuration commands to the modem 13 5 Using the COM111 for GSM dial up 14 5 1 GSM dial up principles 14 5 2 GSM dial up...

Страница 10: ...Fault finding 35 11 1 General 35 11 2 The modem cannot be configured using the Mobile Data Assistant package 36 11 3 GPRS 3G fault finding when using the logger TCP IP stack 36 11 3 1 First stage fau...

Страница 11: ...iii D Using the COM111 in transparent GSM dial up mode D 1 E Using the COM111 with the PIN security feature enabled E 1...

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Страница 13: ...old for IP communications A CS 3G kit are primarily designed for data transfer where data is transferred using Internet protocols IP including TCP IP and UDP often over the public internet This protoc...

Страница 14: ...nsert the SIM card eject the card tray from the end of the modem by pushing in the button with a small screwdriver or pen Put the SIM card in the small card tray taking care the angled corner of the c...

Страница 15: ...going to use then the modem type select COM111 You will then be prompted if you want to make a GSM dial up or GPRS 2G 3G data connection select the latter Then you will be asked for the type of IP co...

Страница 16: ...d in 2G mode Normally this setting can be left in Auto mode where the modem will connect to whichever service is available with preference for 3G services If shown leave the idle time and reset time s...

Страница 17: ...ash briefly every 2 3 seconds When the LED starts to flash it indicates that the modem has registered on the phone network successfully Note the frequency of flashing will vary depending on the power...

Страница 18: ...than the Listen option This screen will appear Follow the instructions in step 7 above to fill in the fields described there For the Konect router option you also need to fill in the fields labelled...

Страница 19: ...400 mA on line transmitting typically 100 200 mA 20 30 mA when online in GPRS 3G mode Frequencies supported Quad band GSM GPRS EDGE 850 900 1800 1900 MHz 900 2100 HSDPA 3G for Europe and Asia Modem se...

Страница 20: ...orting good signal strength with the correct type of data connection available noting some networks will switch to another network for voice only when there is no signal on the providers network The C...

Страница 21: ...including talk through modes to serial sensors connected to the data logger Supports Modbus and DNP3 over IP Supports serving webpages which are user defined Supports requesting data with http comman...

Страница 22: ...e cheapest way to get a system up and running However when operating in this way you can only have a limited numbers of PCs or loggers connected to one logger and you lose some of the ftp server http...

Страница 23: ...oggernet should be able to call out to the logger on demand so it is possible to setup scheduled data collection To minimise data charges you can prevent the extra traffic outside the scheduled calls...

Страница 24: ...he port you are going to connect on This method is only normally used where the logger needs to make more than four connections to different servers which is rare If setting up a modem using the Mobil...

Страница 25: ...end out any data Please see Appendix A for an example of the CRBasic code required By implication the logger defaults to the PPPOpen state as soon as a port is activated for PPP This is not dependent...

Страница 26: ...th distant providers For data transmission most networks support the SMS Short Message System This is not very practical for collecting large volumes of data but can be useful for sending alarm messag...

Страница 27: ...d of the call If a continuous power drain of 5 10 mA is not acceptable the modem power can be controlled using a power switch or the SW12V output on the logger wiring panel with code in the program to...

Страница 28: ...t has to be ejected by pushing in the small green button which is to the rights of the slot holding the tray Use a pen or similar to push the button inwards Insert the SIM with card with the gold cont...

Страница 29: ...ntific dataloggers The quiescent current consumption of the SC WMI is typically less than 100 amps and it uses less than 3 mA when communications are in progress The more general use SC932A interface...

Страница 30: ...ata logger controls power to the COM111 Table 1 shows the wiring from the PSW12 power switch to the data logger The failsafe wire if connected to 5V ensure the modem remains powered if the logger prog...

Страница 31: ...power consumption in areas of poor signal coverage If the antenna is placed near the top of a mast or has long antenna cables it may be vulnerable to lightning damage If lightning is common at the ins...

Страница 32: ...into an adaptor that will be supplied When the antenna is supplied as part of a weather station or other complete installation Campbell Scientific may replace the original connector with a compatible...

Страница 33: ...COM111 has a USB connection this cannot be used to configure the modem for connection to a data logger via its serial port If you do not have the Mobile Data Assistant package you can use a terminal...

Страница 34: ...f the general steps of operation and an explanation of the terminology used As can be seen above the main options apart from Exiting the program are either to Setup equipment or run some Diagnostics o...

Страница 35: ...is not shown Setup Baud rate controls the baud rate the modem serial port is set at this is only shown for some logger modem combinations Setup IP Control allows you to select whether you will be usin...

Страница 36: ...s calling back to a server Enter the public IP address or domain name of the loggernet server or the router its traffic is being routed through Setup Settings for IP connection Konect port this is sho...

Страница 37: ...data logger You have the options of Skipping this step or continuing with the setup Again you have an option of confirming which serial port the data logger is connected to on the PC After successful...

Страница 38: ...gs without Mobile Data Assistant The COM111 can be configured as most such modems using a terminal emulator program by sending a series of AT commands to it Please contact Campbell Scientific for deta...

Страница 39: ...g the IP address and port in the normal way is the an Extra response delay of a few seconds may be required when using a slow connection For the Konect routing service enter the URL followed by and th...

Страница 40: ...et require an IPPort be entered for each logger and a separate call back socket be allocated to each IPPort For each socket you will need to open a hole in your firewall s and possibly put an entry in...

Страница 41: ...ss your provider allows this do not expect to be able to make connections out to this address though as it is normally the address of an intermediate router that is the barrier between the private and...

Страница 42: ...ble to call out to a device that has a fixed IP address enter it in the Outbound Pakbus connection table matching the logger Pakbus address to its fixed IP address with the logger s Pakbus service por...

Страница 43: ...the logger or modem to conserve power Whether operating in call back or fixed IP mode if no valid TCP IP packets are received by the data logger within a few minutes either it or the modem will test...

Страница 44: ...ctions to the call back sockets and outgoing responses from those sockets If using a PC running Windows XP with SP2 SP3 Vista Windows 7 or Windows 8 or equivalent server versions as the Loggernet serv...

Страница 45: ...ce on any problems that you might encounter 9 2 Configuring the COM111 modem as a base station using Loggernet Neither Campbell Scientific nor the manufacturer provide specific drivers for the COM111...

Страница 46: ...built in delay of 2 seconds which is adequate for use with the COM111 modem in most cases On busy networks or with poor communication links a value of 3 or even 4 may be required to allow the error co...

Страница 47: ...en applied the small LED in the case should come on continuously initially Within 30 seconds the LED should switch to start to flash briefly every 2 seconds or so indicating that the unit has register...

Страница 48: ...ding to commands when running the Mobile Data Assistant package aside from checking the cables and power supply please make sure that the modem has a valid SIM card installed in it and if not power cy...

Страница 49: ...ding checking the signal strength and network registration Check the modem was configured correctly Check you have set the correct APN username and password Double check with your airtime provider tha...

Страница 50: ...available ppp dialled The PPP server has been dialled OK a connect message was received ppp opening Starting negotiations with the PPP server ppp authenticating Sending the username password informati...

Страница 51: ...ernet You can also look in Loggernet s Status log tool to make sure Loggernet is listening on the socket for call backs When a call back is made you should see activity in the log showing a connection...

Страница 52: ...is connected to the network and has reasonable signal strength You can do this by using the Mobile Data Assistant program and run the Diagnostics option This will show the signal strength network con...

Страница 53: ...low GSM dial up mode as this mode is not supported for 3G connections Have you ensured that your base station modem setup includes commands to switch off flow control from the base station Are you pow...

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Страница 55: ...overall power consumption can be obtained by making the datalogger turn the power on only when it makes outgoing calls However this would prevent you calling the datalogger at will from a base station...

Страница 56: ...less a full 15 minutes have expired since it was turned on Please note that the logger may indicate that a Com port is active all the time when used with a PPP connection This example also shows how t...

Страница 57: ...12 0 OR Set port 1 to 0 LOW use WriteIO As in SlowSequence WriteIO B00000001 0 Closing the serial port saves power too SerialClose Modemport timetogooff false EndIf NextScan EndProg A 2 Performing a s...

Страница 58: ...olution of timing Scan 1 Min 3 0 Every 12 hours in this example and only if we are not communicating If TimeIntoInterval 0 12 hr Then Note that opening the serial port will automatically close any PPP...

Страница 59: ...Telecommunications Standards Institute ETSI web site at www etsi org B 1 Signal Quality Checks AT CSQ Signal Quality Test command AT CSQ Response CSQ list of supported rssi s list of supported ber OK...

Страница 60: ...T COPS mode fo rmat oper AcT Response The modem forces an attempt to select and register the network operator If the selected operator is not available no other operator will be selected except mode 4...

Страница 61: ...Parameter mode 0 Disable network registration unsolicited result code default 1 Enable network registration code result code CREG stat 2 Enable network registration and location information unsolicit...

Страница 62: ...ssary before it can be operated SIM PIN SIM PUK PH SIM PIN etc If the PIN is entered twice the TA will automatically repeat the PIN If no PIN request is pending no action is taken and an error message...

Страница 63: ...and mode 1800 MHz AT WMBS 3 0 Select mono band mode 1900 MHz AT WMBS 4 0 Select dual band mode 850 1900 MHz AT WMBS 5 0 Select dual band mode extended 900 MHz 1800 MHz AT WMBS 6 0 Select dual band mod...

Страница 64: ...ver Kits including the COM111 modem B 6 WMBS 5 x Dual band mode extended 900 MHz 1800 MHz are selected WMBS 6 x Dual band mode extended 900 MHz 1900 MHz are selected WMBS 7 x Quad band mode 850 900E e...

Страница 65: ...m and logger 3 Connect the logger to the PC e g via the RS232 or USB port if supported and start communicating with it using the Device Configuration program use the latest version from www campbellsc...

Страница 66: ...ld respond 0 or OK unless it has been configured at the wrong baud rate or all responses have been turned off 14 If there is no response at all please consider the baud rate may not be set as expected...

Страница 67: ...PC400W to correct any communication errors On poor quality lines the PC software will often drop the call and redial when it sees a certain level of errors The non transparent mode is less prone to d...

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Страница 69: ...erwise follow these instructions E1 Introduction To operate with the COM111 s PIN feature enabled the datalogger must transmit the command to send the PIN to the COM111 after turning on the power For...

Страница 70: ...val 0 60 Min Then Set port 1 to 1 ON use writeio as in slowsequence WriteIO B00000001 1 Delay 1 2 sec Allow 2 seconds for the modem to power on SerialOpen Modemport modembaud 0 0 100 Send the command...

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Страница 72: ...l info campbellsci fr Website www campbellsci fr Germany Location Bremen Germany Phone 49 0 421 460974 0 Email info campbellsci de Website www campbellsci de South Africa Location Stellenbosch South A...

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