Campbell COM220 Manual de usuario

COM220 Telephone Modem

Revision: 3/07

Campbell Scientific, Inc.

Warranty and Assistance

The COM220 TELEPHONE MODEM is warranted by CAMPBELL

SCIENTIFIC, INC. to be free from defects in materials and workmanship

under normal use and service for twelve (12) months from date of shipment

unless specified otherwise. Batteries have no warranty. CAMPBELL

SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or

replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.

The customer shall assume all costs of removing, reinstalling, and shipping

defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL

SCIENTIFIC, INC. will return such products by surface carrier prepaid. This

warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products

which have been subjected to modification, misuse, neglect, accidents of

nature, or shipping damage. This warranty is in lieu of all other 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. Affiliate companies handle

repairs for customers within their territories. Please visit

www.campbellsci.com to determine which Campbell Scientific company

serves your country. To obtain a Returned Materials Authorization (RMA),

contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. After an

applications engineer determines the nature of the problem, an RMA number

will be issued. Please write this number clearly on the outside of the shipping

container. CAMPBELL SCIENTIFIC's shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____

815 West 1800 North

Logan, Utah 84321-1784

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

COM220 Telephone Modem

Table of Contents

PDF viewers note: These page numbers refer to the printed version of this document. Use

the Adobe Acrobat® bookmarks tab for links to specific sections.

1. Introduction..................................................................1

1.1 General Description..................................................................................1

1.2 Computer Requirements...........................................................................2

2. Specifications ..............................................................3

3. Installation....................................................................3

3.1 Connecting to Datalogger.........................................................................3

3.2 Connecting to Earth Ground.....................................................................4

3.3 Telephone to MD485 or Telephone to RF Systems..................................4

3.4 Telephone Service ....................................................................................4

4. Modem Settings...........................................................6

5. Troubleshooting ..........................................................7

Appendices

A. Changing COM220 Settings...................................A-1

A.1 DIP Switch Settings............................................................................ A-1

A.2 Hayes AT Commands......................................................................... A-2

A.3 Downloading a New Operating System to the COM220.................... A-6

A.4 Program Examples.............................................................................. A-7

A.4.1 ModemCallback Example (for CR1000) .................................. A-7

A.4.2 DialModem Example (for CR1000).......................................... A-8

A.4.3 P97 Instruction (for CR10X)..................................................... A-9

A.4.4 Example Programs for Data-Callbacks via a CR1000

Datalogger Router .............................................................. A-11

B. CS I/O Connection................................................... B-1

B.1 CS I/O 9 Pin Connection......................................................................B-1

C. Theory of Operation................................................C-1

C.1 Theory of Operation.............................................................................C-1

COM220 Telephone Modem Table of Contents

D. FCC Warning to Users of

Class A Computing Devices..............................D-1

E. IC Information..........................................................E-1

List of Figures

1. COM220 DIP Switches.............................................................................. 1

2. COM220 .................................................................................................... 2

3. CR1000 and COM220 Using Remote Telephone Line ............................. 5

4. CR10X with CR10 Wiring Panel and COM220 Using RJ11C

Telephone Jack ....................................................................................... 6

A-1. COM220 to Computer Connection....................................................A-3

A-2. Device Configuration Screen.............................................................A-4

A-3. Terminal Emulator Screen in Device Configuration .........................A-5

A-4. Send OS Screen in Device Configuration..........................................A-7

B-1. CS I/O Pin Out................................................................................... B-1

List of Tables

1. Dataloggers that Require Direct 12 VDC Connection to COM220........... 4

A-1. Selecting ME Baud-rates via DIP Switches 3 and 4..........................A-2

A-2. Maximum Datalogger ME Baud-rate ................................................A-2

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 not active, the COM220 draws 100 to 120 µA

from the datalogger’s 12 VDC output. During a call, it draws about 30 mA.

The COM220 is a replacement for the COM210. However, the COM220

supports both synchronous device communication (SDC) and modem enable

(ME) communication, as well as various ME baud rates (9600 to 115200).

The default settings for the COM220 at shipping are SDC7, and PakBus ready

(see Appendix A for details).

The default settings ARE NOT compatible with dataloggers

that have non-PakBus operating systems (e.g., CR510,

CR10X, CR23X, CR7, CR5000). However, compatibility

with non-PakBus dataloggers is easily achieved by

changing DIP switch settings (Figure 1). If you want to use

the COM220 as a drop-in replacement for the COM210,

the COM220 settings should be changed to modem enable

(DIP switch 1 open), and 9600 baud (DIP switches 3 and 4

open). In addition, DIP switch 5 must be closed for

connection to non-PakBus dataloggers. Instructions for

configuring the COM220 are described in Appendix A.

IMPORTANT

FIGURE 1. COM220 DIP Switches. Five Screws and the Outer Cover

Must be Removed for Access to the DIP Switches.

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 can be used as an originate modem at the datalogger site. For

non-Pakbus dataloggers (e.g., CR510, CR10X, CR23X), and for older PakBus

dataloggers (e.g. CR10XPB, CR23XPB, CR510PB) use Instruction 97 to

program the datalogger to originate a call to the computer; refer to your

datalogger manual for a detailed description of Instruction 97. For newer

Pakbus dataloggers (e.g., CR800, CR1000, CR3000) use the ModemCallback

instruction or the DialSequence and DialModem instructions to program the

datalogger to originate a call to the computer. Again, refer to your datalogger

manual and LoggerNet Help files for detailed descriptions of these

instructions. In addition, Appendix A.4 includes sample programs for the P97,

ModemCallback, and DialModem instructions.

The COM220 features a built-in speaker to allow monitoring of calling and

connection. See Appendix A.2 for the Hayes AT commands that affect the

speaker on/off and volume settings.

FIGURE 2. COM220

1.2 Computer Requirements

A Hayes-compatible modem is used at the computer site with Campbell

Scientific computer software to call the datalogger attached to the COM220.

The computer’s modem must be configured to the proper settings using a set of

modem initialization strings in the software program’s pick list.

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 datalogger and COM220: 9600, 38400,

57600, 115200 bps (selected by user)

•Operation: Full-duplex over standard analog phone lines

•Operating temperature: -25° to +50°C std, -55° to +85°C optional

•Dimensions: 6.5” x 1.0” x 2.6” (16.5 x 2.5 x 6.6 cm)

•Weight: 0.35 lbs (0.16 kg)

3. Installation

The COM220 is designed to be used with standard analog telephone lines. It

will not work with a digital telephone line. Connection to telephone-company-

provided coin service (central office implemented systems) is prohibited.

Connection to party line service is subject to state tariffs.

3.1 Connecting to Datalogger

Connect the cable from the telephone RJ11C jack to the modem as shown in

Figure 4. If the telephone company has not installed surge protection in the

telephone line (no RJ11C jack), one must install surge protection (CSI item

number 6362 or 4330) and connect the ring and tip terminal blocks as shown

in Figure 3.

Current Campbell Scientific dataloggers provide 12 VDC to the COM220 from

the CS I/O port via the SC12 cable (Figure 2). Older dataloggers do not

provide 12 VDC on their CS I/O port. 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 COM220 (see Figure 4).

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

3.2 Connecting to Earth Ground

Connect the green 14 awg grounding wire (provided with the COM220) to the

ground terminal (GND) on the COM220 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.

CAUTION

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

router), the COM220 should be set for ME mode. The COM220 and MD485

should be set to the same baud rate. When using a PakBus network with a

datalogger configured as a router, the COM220 can be set for SDC7 and the

radio for SDC8, or vice versa. Contact a Campbell Scientific Applications

Engineer for more information. In addition, Appendix A.4.4 includes example

programs for both a router datalogger and a remoter datalogger communicating

by telephone to MD485 or telephone to radio.

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 COM220

are listed on its label. Additional technical information from the FCC and IC on

the COM220 is available in Appendices D and E, respectively.

COM220 Telephone Modem

SE 12 34 56 78

1234

DIFF H

EX1

12VG

DC ONLY

CAUTION

LUG

GROUND

POWER IN

WIRING PANEL

CR1000

PERIPHERAL PORT

RS-232 (Not Isolated)

SN:

CS I/O

MADE IN USA

109

SE 15 1613 1412

DIFF H

EX2

EX3

5678

SW-12

12V

COM1

Rx Tx Rx Tx Rx Tx Rx

COM2 COM3 COM4

POWER OUT

SDM

G 12V

Burial Phone Cable

Blue = Ring

Blue/White = Tip

Phone Line

Transient Protector

(Model 6362 or 2372-01)

SC12 Cable

Earth

Ground

FIGURE 3. CR1000 and COM220 Using Remote Telephone Line

COM220 Telephone Modem

CAMPBELL

SCIENTIFIC

INC.

CR10

MADE IN USA

WIRING PANEL NO.

EARTH

DIFF

AG H L AG H L AG H L AG GGE3 AG

4 5 6

78 910 1112

GGGG

12V 12V

SWITCHED

12V

G 12V

POWER

SERIAL I/O

DIFF AG H L AG H L AG H L AG GGE1 E2

1 2 3

12 34 56

G 5V5V P1 P2 C8 C7 C6C5C4C3C2 C1

CONTROL

12V

SWITCHED

To Earth

Ground

14 AWG Ground Wire

SC12 Cable

Telephone Wall

Jack

Red Black

(Ground)

(+12v)

FIGURE 4. CR10X with CR10 Wiring Panel and COM220 Using RJ11C Telephone Jack

4. Modem Settings

The COM220 comes from the factory with the appropriate settings for PakBus

dataloggers (e.g., CR8x0, CR1000, CR3000, CR10XPB, CR23XPB). It is

programmed to answer a call as soon as a call is detected. It is also

programmed for Synchronous Device Communication (SDC7). As mentioned

in the introduction, these settings must be modified in order to connect to older

dataloggers (e.g. CR510, CR10X, CR23X, CR7) with non-PakBus operating

systems.

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