Com220 telephone modem revision: 4/12 c o p y r i g h t © 1 9 9 7 - 2 0 1 2 c a m p b e l l s c i e n t i f i c , i n c ..
Warranty “products manufactured by campbell scientific, inc. Are warranted by campbell scientific, inc. (“campbell”) to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless otherwise specified in the corresponding campbell...
Assistance 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. Affiliate companies handle repairs for customers within their territories. Please visit www...
Com220 telephone modem table of contents pdf viewers: these page numbers refer to the printed version of this document. Use the pdf reader bookmarks tab for links to specific sections. 1. Introduction..................................................................1 1.1 general description............
Com220 telephone modem table of contents ii d. Fcc warning to users of class a computing devices..............................D-1 e. Ic information .......................................................... E-1 list of figures 1. Com220 dip switches. Five screws and the outer cover must be removed f...
Com220 telephone modem 1. Introduction 1.1 general description the com220 modem is a selectable-baud-rate modem employing the hayes at command set. Its primary use is as a remote site phone modem connected to a csi datalogger. The modem is powered and enabled by the battery- powered datalogger. When...
Com220 telephone modem the com220 is connected to a csi datalogger by a 9-pin subminiature d cable. This is the same 9-pin cs i/o interface common to all campbell scientific dataloggers (except the cr200 series). This is not an rs-232 connection. Appendix b describes the cs i/o interface. The com220...
Com220 telephone modem 2. Specifications standards: v.92, k56flex, v.90, v.34, v.32bis, v32, v23, v22bis, v22, v.21, b212, b103 registration: fcc us: 3a4m508bsm2-t-w ic 2377 a-sm2tw tbr21 operating voltage: 12 vdc current drain: 100 to 120 μa quiescent; 30 ma active communication rate between datalo...
Com220 telephone modem table 1. Dataloggers that require direct 12 vdc connection to com220 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 se 1 2 3 4 5 6 7 8...
Com220 telephone modem 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 c7 c6 c5 c4 c3 c2...
Com220 telephone modem 3.3 telephone to md485 or telephone to rf systems telephone to md485 or telephone to radio configurations can be utilized for communicating with multiple dataloggers through one telephone line. For telephone to md485 or telephone to radio communications (with no datalogger rou...
Com220 telephone modem phone wires are live, typically with low voltage (24 vdc). While not harmful in most situations, campbell scientific recommends installing the surge protector in dry weather only by technicians with a healthy heart. Caution figure 5. Top view of surge suppressor wiring 7.
Com220 telephone modem figure 6. Side view of surge suppressor wiring 4. Modem settings the com220 is shipped from the factory with default settings that support pakbus dataloggers (e.G., cr800, cr1000, cr3000, cr10xpb). The modem comes configured for synchronous device communication (sdc7), and if ...
Com220 telephone modem some of the at command settings one may change are: disable auto-answer: this option is used only when the modem is not to answer a call. For example, the com220 is connected to a telephone line that is to be used part time for voice communication. In this situation it is best...
Com220 telephone modem unable to communicate with the com220 unless baud rates happen to match. A good rule of thumb is to keep baud rates negative (-) in programs and when configuring the status table to allow datalogger auto-bauding. 5) if unable to connect to a datalogger via the com220, make sur...
Com220 telephone modem to comply with fcc rules and regulations, all repairs on the com220 modem must be performed by campbell scientific, inc. Or an authorized agent of campbell scientific, inc. For assistance in installation, troubleshooting, or for repair, contact campbell scientific: campbell sc...
Com220 telephone modem 12.
Appendix a. Changing com220 settings changing any of the modem's settings may result in communication problems. After changing the settings, try the modem locally before installing it at a remote location. To speed problem resolution when contacting campbell scientific for support, please inform us ...
Appendix a. Changing com220 settings table a-1. Selecting me baud-rates via dip switches 3 and 4 me baud-rate switch 3 switch 4 9600 open open 38400 open closed 57600 closed open 115200 closed closed please note that older dataloggers (e.G. Cr10x, cr23x, cr510) cannot support the highest com220 me b...
Appendix a. Changing com220 settings figure a-1. Com220 to computer connection to configure the com220 with hayes at commands, follow these steps: 1) close dip switch 8 on the com220 (power to the com220 must be cycled for ~ 5 sec before changes to dip switch settings are effective). 2) you must use...
Appendix a. Changing com220 settings 7) follow the instructions that appear in the terminal emulator screen (figure a-3). 8) be sure to save all new commands before exiting (by entering 5 and enter). 9) when finished, return dip switch 8 on the com220 to its open position. Figure a-2. Device configu...
Appendix a. Changing com220 settings figure a-3. Terminal emulator screen in device configuration hayes at command summary: this manual does not attempt to be a primer on the hayes at command set. The commands are, therefore, only summarized below. For most applications, these commands will not need...
Appendix a. Changing com220 settings m0 speaker always off m1 (default) speaker on during call establishment m2 speak on during entire call session s0=0 disable auto answer s0=1 (default) answer on second ring s0=2 answer on third ring s0=n answer on (n + 1)ring. When doing datalogger to datalogger ...
Appendix a. Changing com220 settings figure a-4. Send os screen in device configuration a.4 program examples a.4.1 modemcallback example (for cr1000) the modemcallback instruction is available in the cr1000 with operating system std.12 or greater, in the cr3000 with operating system std.05 or greate...
Appendix a. Changing com220 settings modemcallback(result,comsdc7,9600,0,"5551212","",40,60,abort) calltable test5 nextscan end program a.4.2 dialmodem example (for cr1000) the program below does 2-minute callbacks via the com220 configured for sdc7. Dialmodem is set equal to a variable, so that the...
Appendix a. Changing com220 settings the com220 can return several possible responses once connected (each terminating in a carriage return): caution “1” connect “5” connect1200 “10” connect2400 “13” connect9600 “18” connect4800 “20” connect7200 “21” connect12000 “25” connect14400 hence, to work wit...
Appendix a. Changing com220 settings do not put instruction 97 inside a loop or conditional statement; it must be executed each time the table is run. Important in the example below, the program does two minute data callbacks via the com220 phone modem. Edit instruction 13 with your pc’s (loggernet’...
Appendix a. Changing com220 settings 12: initiate telecommunications (p97) 1: 22 phone modem/9600 baud ;set baud-rate/modem 2: 5 disabled when user flag 5 is high 3: 45 seconds call time limit 4: 0 seconds before fast retry 5: 0 fast retries 6: 0 minutes before slow retry 7: 3 failures loc [ failure...
Appendix a. Changing com220 settings a-12 sequentialmode datatable (testa,1,-1) datainterval (0,2,sec,10) minimum (1,batteryvoltage,fp2,0,false) sample (1,paneltemperature,fp2) endtable dialsequence (4094) staticroute(comsdc8,4094,4094) ' so router discovers loggernet server dialsuccess = dialmodem ...
Appendix b. Cs i/o connection b.1 cs i/o 9-pin connection the pin out of the connector is shown in figure b-1. The direction of the signal relative to the modem is shown in parenthesis. Unless specified otherwise, all levels are 0 v for logic low, 5 v for logic high. Figure b-1. Cs i/o pin out 1. (i...
Appendix c. Theory of operation c.1 theory of operation the com220 modem is used to transmit data over bandwidth-limited channels such as telephone lines by modulating audio tones. The com220 uses various modulation schemes including fsk (frequency shift keying), tcm (trellis coded modulation), qam ...
Appendix d. Fcc warning to users of class b computing devices this equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with t...
Appendix e. Ic information industry canada (ic) was formerly known as doc. Note cp-01, issue 8, part i section 14.1 “notice: the industry canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safe...
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