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COM210 Telephone Modem 

Current Campbell Scientific dataloggers provide 12 VDC to the COM210 via 
the SC12 cable (Figure 2).  Older dataloggers do not provide 12 VDC on the 
datalogger's CS I/O 9 pin connector.  When used with the older dataloggers 
listed in Table1, 12 VDC and ground need to be connected via the green power 
connector on the side of the COM210 (see Figure 3). 

 

Table 1.  Dataloggers that Require Direct 

12 VDC Connection to COM210 

 

CR10(X) with silver wiring panel 

 

CR10(X) with black CR10 wiring panel (P/N 8032) 

 

21X(L)—serial number 13,442 or lower 

 CR500

serial number 1764 or lower 

 

CR7—700X serial number 2778 or lower 

 

BDR301 and BDR320 

3.2  Connecting to Earth Ground 

Connect the green 14 awg grounding wire (provided with the COM210) to the 
grounding terminal (GND) on the COM210 and to the enclosure’s earth 
ground connection.  If the site does not have a grounded enclosure, then 
connect the ground wire directly to an earth ground connection.  The 
datalogger ground should also be tied to the earth ground.   

The modem must be grounded for its transient protection 
to work. 

3.3  Telephone to MD485 or Telephone to RF Systems 

Telephone to MD485 or telephone to radio systems can be utilized for 
communicating with multiple dataloggers through one telephone line.  Nothing 
additional or special is required for the telephone part of the link.  See the 
MD485 or RF Manuals for complete information on their special requirements. 

3.4  Telephone Service 

The goal of the telephone company is to provide you with the best service it 
can.  In order to do this, it may occasionally be necessary for them to make 
changes in their equipment, operations, or procedures.  If you have any 
questions about your telephone line, such as how many pieces of equipment you 
can connect to it, the telephone company will provide this information upon 
request.  If the telephone company requests information concerning the 
equipment which you have connected to your telephone line, the FCC 
registration number and the ringer equivalence number (REN) of the COM210 
are listed on its label.  Additional technical information from the FCC and IC on 
the COM210 is available in Appendix D and E, respectively. 

CAUTION 

Summary of Contents for COM210

Page 1: ...INSTRUCTION MANUAL COM210 Telephone Modem Revision 10 05 C o p y r i g h t c 1 9 9 7 2 0 0 5 C a m p b e l l S c i e n t i f i c I n c ...

Page 2: ...her warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential damages Products may not be returned without prior authorization The following contact information is for US and International customers residing in countries served by Campbell Scientific Inc directly...

Page 3: ...er 2 3 2 Connecting to Earth Ground 3 3 3 Telephone to MD485 or Telephone to RF Systems 3 3 4 Telephone Service 3 4 Troubleshooting 6 5 Modem Settings in Non Volatile Memory 7 Appendixes A Modifying the Non Volatile Memory A 1 A 1 Hardware Connection to COM210 A 1 A 2 Remote Communication to the COM210 A 2 A 3 Hayes AT Command Summary A 4 B CS I O Connection B 1 B 1 CS I O 9 Pin Connection B 1 C T...

Page 4: ...00 and COM210 Using Remote Telephone Line 4 3 CR10X with CR10 Wiring Panel and COM210 Using RJ11C Telephone Jack 5 A 1 LoggerNet Screen A 2 A 2 COM210 to Computer Connection A 3 B 1 CS I O Pin Out B 1 List of Tables 1 Dataloggers that Require Direct 12 VDC Connection to COM210 3 ...

Page 5: ...tailed description of Instruction 97 CRBasic dataloggers e g CR1000 CR3000 use the Dial Sequence and Dial Modem instructions The COM210 features a built in speaker to allow monitoring of calling and connection operations See Appendix A 3 for the Hayes AT commands that affect the speaker on off and volume settings TIP RING GND CAMPBELL SCIENTIFIC INC COM210 MODEM MADE IN USA S N 1002 Complies with ...

Page 6: ...ata output pin 4 represents a mark Operational temperature 25oC to 50oC standard Extended operational temperature range of 55 C to 85 C is available at time of purchase Size 5 2 x 1 7 x 3 6 13 1 x 4 3 x 9 2 cm Weight 0 75 lbs 0 34 kg 3 Installation The COM210 is designed to be used with standard analog telephone lines It will not work with a digital telephone line Connection to telephone company p...

Page 7: ...ied to the earth ground The modem must be grounded for its transient protection to work 3 3 Telephone to MD485 or Telephone to RF Systems Telephone to MD485 or telephone to radio systems can be utilized for communicating with multiple dataloggers through one telephone line Nothing additional or special is required for the telephone part of the link See the MD485 or RF Manuals for complete informat...

Page 8: ...002 MADE IN USA GND RING TIP Burial Phone Cable Blue Ring Blue White Tip Phone Line Transient Protector Model 6362 or 2372 01 SC12 Cable Complies with Part 68 FCC rules FCC Registration No B9QUSA 75378 MM T Ringer Equivalence 0 9B Required Connector USOC RJ11C This equipment complies with the requirements in Part 15 of FCC Rules for Class A computing device Operation of this equipment in a residen...

Page 9: ...ceptable interference to radio and TV reception requiring the operator to take whatever steps are necessary to correct the interference 12V G CAMPBELL SCIENTIFIC INC CR10 MADE IN USA WIRING PANEL NO EARTH DIFF SE AG H L AG H L AG H L AG G G E3 AG 4 5 6 7 8 9 10 11 12 G G G G 12V 12V SWITCHED 12V G 12V POWER IN SERIAL I O SE DIFF AG H L AG H L AG H L AG G G E1 E2 1 2 3 1 2 3 4 5 6 G 5V 5V P1 P2 C8 ...

Page 10: ...odes showing how the call is progressing These result codes can be either numeric 0 1 2 etc or verbose OK CONNECT RING etc Prior to PC208W 3 0 our software expected numeric result codes PC208W 3 x and LoggerNet uses verbose result codes to determine call progress The V command is used to select between numeric or verbose result codes Depending on the version of PC208W being used the initialization...

Page 11: ...n In this situation it is best to have the datalogger call the computer Speaker On Off and Volume Default settings have the speaker on during call establishment only and set to a low volume To conserve on current drain during the connection time or so one doesn t hear the speaker one may turn the speaker completely off When one wants to hear the speaker better than the default low volume setting o...

Page 12: ...COM210 Telephone Modem 8 ...

Page 13: ...changes that have been made A 1 Hardware Connection to COM210 Connect the COM210 to a computer using an SC532A interface Figure A 2 The computer software LoggerNet used to communicate with the COM210 must raise the RS 232 DTR and set RTS low The following example shows how to change the COM210 to answer on the 3rd ring First attach a series of Generic devices ending with a datalogger to a COM port...

Page 14: ...program the datalogger to initiate a call to it using a program similar to the Example Program 1 After this program runs once the modem is now programmed and the actual program one wants to run may now be downloaded to the datalogger Please note that this program requires that the option code for an RF modem be used instead of the normal phone modem option ...

Page 15: ... unacceptable interference to radio and TV reception requiring the operator to take whatever steps are necessary to correct the interference 12V G SC12 Cable Red Black To 12V To GND FIGURE A 2 COM210 to Computer Connection Example Program 1 Table 1 Program 01 1 Execution Interval seconds 1 Initiate Telecommunications P97 1 02 RF Modem 9600 Baud 2 1 Disabled when User Flag 1 is High 3 20 Seconds Ca...

Page 16: ... carriage return hit the Enter key There are no O as in Oscar commands only 0 as in Zero commands All commands must be issued as CAPITAL letters COMMANDS TO CHANGE DEFAULT MODES B1 default CCITT V 32 9600 baud Bell 212A 1200 baud and Bell 103 300 baud B0 CCITT V 32 9600 baud CCITT V 22 1200 baud and CCITT V 21 300 baud L0 Lowest speaker volume L1 default Low speaker volume L2 Medium speaker volume...

Page 17: ...00 Baud If more than three rings are specified first P63 parameter 6 50 the datalogger may time out before the modem answers communication will never be established It is possible in some conditions to allow more than three rings Consult a Campbell Scientific applications engineer about optimizing modem negotiations before trying this and be sure to try the set up locally before installing at a re...

Page 18: ...Appendix A Modifying the Non Volatile Memory A 6 This is a blank page ...

Page 19: ...C supply Not used by COM210 2 input Ground 3 output Ring a logic high signifies a ring signal has been detected 4 output RX Data serial data from COM210 5 input Modem Enable a logic high internally switches power to the modem A logic low internally shuts off power to the modem 6 input Serial Device Enable a logic high disables communication with the modem without removing power or changing the mod...

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Page 21: ...ry is continuously powered but draws less than 2 µA The ring signal is passed on to the datalogger through an opto coupler The datalogger responds to a ring by raising the Modem Enable line which internally switches the regulated 5 V supply to the rest of the modem s circuitry The modem then answers and remains off hook until it loses the carrier or the datalogger lowers the Modem Enable line The ...

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Page 23: ...ns It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules which are designed to provide reasonable protection against such interference when operated in a COMMERCIAL ENVIRONMENT Operation of this equipment in a residential area may cause interference to radio and television reception The operator must take whatever measur...

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Page 25: ... be coordinated by a representative designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe s...

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