Sixnet Sixnet VT-MODEM-5 Guide d'installation

Marque: Sixnet

Modèle: Sixnet VT-MODEM-5

Taper: Guide d'installation

Ce manuel convient également à

Sixnet

Series

VT-MODEM-4

Hardware Guide | December 2018

Leased Line Industrial Modem

LP1087-A

trademarks of Red Lion Controls, Inc. All other company and product names are trademarks of their

respective owners.

Red Lion Controls, Inc.

20 Willow Springs Circle

York, PA 17406 USA

CONTACT INFORMATION:

Inside US: +1 (877) 432-9908

Outside US: +1 (717) 767-6511

Website: www.redlion.net

Email: [email protected]

Revised 2018-12-10 Table of Contents

Drawing No. LP1087-A

i VT-MODEM-4

Hardware Guide



TableofContents

Preface

.............................................................................................. iii

Disclaimer ............... .......................................................................... iii

Purpose... ................................................ ................................ ........ iii

Audience .......... ................................................ ................................ iii

ComplianceStatements,Certifications &UserInformation ........................................ iii

FCCComplianceStatement ........

................................................................. iii

UserComplianceInformation .................................

............... ....................... iv

CanadianComplianceStatement.........

............... ............................................ iv

TrademarkAcknowledgments ................ ................................ ................ ......v

RegulatoryInformation.................................................... ................ .........v

ReleaseNotesandDocumentUpdates..............................................................v

PublicationHistory.......................................

..........................................v

RelatedDocuments.......

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DocumentComments... .......................

............... .................................... vi

AdditionalProductInformation.................................................................... vi

SafetyInformation................................. ................................ ................ vi

Warnings/Cautions/Notes......................................................... ................ vi

HazardousLocationandInstallationRequirements................... ...

............... ................vii

AVERTISSEMENTSPOURINSTALLATIONETENDROITSDANGEREUX ......... .. ....

............... ..........vii

Chapter1ProductOverviewandHighlights .................................................1

ProductOverview..................................................................................1

ProductHighlights ..................................................................................1

VT‐MODEM‐4 .. ...............

....................................................................1

VT‐MODEM‐4FeaturesandBenefits.................... .......

............... ........................2

VT‐MODEM‐4Specifications .......................................................... ..............3

Chapter2 HardwareInstallation.................................. .. ................ ...........4

MountingtheVT‐MODEM‐4 ............... ................................................ .........4

ElectricalConnections......... ................ .. ................ .. .................................5

RS232Connections .....................

...........................................................5

IPmandST‐GT‐1210RS232Connections....................................

...........................6

3rdPartyPLC/DeviceConnections .....................

...............................................7

VT‐MODEM‐4Power,

PhoneLineConnections ..........................................................8

DCPOWER ................................... .....

............... .............................8

Telep h oneCable ......

.........................................................................8

ModemConfiguration ..............................................................................9

VT-MODEM-4 Hardware Guide ii

Table of Contents Revised 2018-12-10

Drawing No. LP1087-A



ConfiguringaVT‐MODEM‐4 .........................................................................9

ATCommandStringAtPower‐up ..................

...............................................9

ConfiguringaVT‐MODEM

‐4asanExternalModemonaPC.... ...........................................9

ModemInstallationinWindows®10.........................................

............... ......9

ModemInstallationinWindows®7................. ........

......................................9

ToRemoveaModem ..........

................................................................10

UsingaTermina lProgramtoConfiguretheVT‐MODEM‐4.............................

...............10

ConfiguringthePortParameters............ ................ .....

................................10

LeasedLineConnections ............................................................. .............13

TypesofLeasedLineconnections. ......................

.............................................13

MaintenanceInformation .......... ................................ .. ................ .............14

TroubleshootingTips ..........................

............... .....................................14

VT‐MODEMDefaultLEDIndications .................................. .. ..........

................14

ReconnectingSerialCables...................... .. ........

.....................................14

ResettingtheVT‐MODEM‐4..........

...........................................................14

ServiceandSupportInformation .................................. .............................16

ServiceInformation .................................................................. .............16

ProductSupport............................ .. ................ ................ .....................16

StatementofLimitedWarranty.......... .......................................................17

iii VT-MODEM-4 Hardware Guide



Revised 2018-12-10 Preface

Drawing No. LP1087-A

Preface

Disclaimer

Portions of this document are intended solely as an outline of methodologies to be followed during the

maintenance and operation of the VT-MODEM-4 equipment/software. It is not intended as a step-by-step guide or

a complete set of all procedures necessary and sufficient to complete all operations.

While every effort has been made to ensure that this document is complete and accurate at the time of release, the

information that it contains is subject to change. Red Lion Controls is not responsible for any additions to or

alterations of the original document. Industrial networks vary widely in their configurations, topologies, and traffic

conditions. This document is intended as a general guide only. It has not been tested for all possible applications,

and it may not be complete or accurate for some situations.

Users of this document are urged to heed warnings and cautions summarized at the front of the document, such as

electrical hazard warnings.

Purpose

This manual gives specific information on how to install and connect the VT-MODEM-4 to a PC.

Audience

The manual is intended for use by qualified personnel who are responsible for installing and maintaining network

equipment in an industrial environment.

ComplianceStatements,Certifications&UserInformation

FCCComplianceStatement

The Federal Communications Commission (FCC) has established rules which permit this device to be directly

connected to the telephone network. Standardized jacks are used for these connections. This equipment should

not be used on party lines or coin lines.

If this device is malfunctioning, it may also be causing harm to the telephone network; this device should be

disconnected until the source of the problem can be determined and until repair has been made. If this is not done,

the telephone company may temporarily disconnect service.

The telephone company may make changes in its technical operations and procedures; if such changes affect the

compatibility or use of this device, the telephone company is required to give adequate notice of the changes.

VT-MODEM-4 Hardware Guide iv

PREFACE REVISED 2018-12-10

RAWING NO. LP1087-A



If the telephone company requests information on what equipment is connected to their lines, inform them of:

• The telephone number that it is connected to,

• The Ringer Equivalence Number 0.3,

• The USOC jack required RJ11, and

• The FCC Registration Number 34579-MD-E

Items (b) and (d) are indicated on the label. The ringer equivalence number (REN) is used to determine how many

devices can be connected to your telephone line, In most areas, the sum of the RENs of all devices on any one line

should not exceed five (5.0). If too many devices are attached, they may not ring properly.

In the event of equipment malfunction, all repairs should be performed by our Company or authorized agent. It is the

responsibility of users requiring service to report the need for service to our company or one of our authorized agents.

UserComplianceInformation

If this equipment causes interference to radio or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct the interference by one or more of the following

measures:

In order to meet FCC emissions limits, this equipment must be used only with cables that comply with IEEE 802.3.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional

suggestions.

The user may find the following booklet prepared by the Federal Communications Commission helpful:

“How to Identify and Resolve Radio-TV Interference Problems”.

This booklet is available from: U.S. Government Printing Office, Washington DC, 20402 Stock No. 004-000-00345-4.

CanadianCompliance Statement

The VT-MODEM-4 meets the procedural and specification requirements for certification under the Terminal

Attachment Program.

Certification No.: 2991 8926 A

Issued To: Sixnet

Type Of Equipment: Multi-media Device

Trade Name And Model: VT-MODEM-4

Method Of Connection: CA11A

Ringer Equivalence No.: 0.3

v VT-MODEM-4 Hardware Guide



Revised 2018-12-10 Preface

Drawing No. LP1087-A

Certified To: Specification Cs03 Issue 8

Network Interface: LS

TrademarkAcknowledgments

Red Lion Controls acknowledges and recognizes ownership of the following trademarked terms used in this

document.

• Microsoft

Windows

10, Windows

7, and Windows

are registered trademarks of the Microsoft 

Corporation in the United States and/or other countries.

• All other company and product names are trademarks of their respective owners.

RegulatoryInformation

FCC Part 15 and FCC Part 68; UL 508; CSA C22.2/142;

ACA TS 001- 1997; ACA TS 002-1997; AS/NZS3260-1993;

AS/NZS3548-1995; CTR21 (98/482/EC); EN55022; EIEC 950:1991;

Hazardous Locations: ANSI/ISA 12.12.01, CSA C22.2/213 (Class 1, Division 2 Groups A, B, C and D)

ReleaseNotesandDocumentUpdates

The hard copy and online versions of this document are revised only at major releases and, therefore, may not

always contain the latest product information. As needed, Tech Notes and or Product Bulletins will be provided

between major releases to describe any new information or document changes.

The latest online version of this document and all product updates can be accessed through the Red Lion web site

at w

ww.redlion.net/support/documentation

PublicationHistory

The following information lists the release history of this document.

RelatedDocuments

The following information lists available documents related to this product.

Issue/Revision Release Date Content Description

Revision A December 2018 Document updated to new format.

Initial Release August 2009 Original version.

VT-MODEM-4 Hardware Guide vi

PREFACE REVISED 2018-12-10

RAWING NO. LP1087-A



DocumentComments

Red Lion appreciates all comments that will help us to improve our documentation quality. The user can submit

comments through the Red Lion Customer Service. Simply email us at customer[email protected]

AdditionalProductInformation

Additional product information can be obtained by contacting the local sales representative or Red Lion through the

contact numbers and/or e-mail addresses listed on the back of the cover.

SafetyInformation

Warnings/Cautions/Notes

Warnings apply to situations where personal injury or death may result.

Mises en garde s'appliquent aux situations où les risques de blessures graves ou mortelles peuvent en résulter

Cautions apply where damage to equipment may result.

Les mises en garde s'appliquent dans le cas où les dommages matériels peuvent en résulter

Notes apply where additional noteworthy information, not in the general text flow but applicable, is made available

to the user.

Notes s'appliquent lorsque des informations dignes de mention, non pas dans l'enchaînement du texte mais il y a

lieu, est mis à la disposition de l'utilisateur

GeneralSafetyCautionsandWarnings/PrécautionsetAvertissementsdeSécuritéGénérale

Issue/Revision Release Date Document Title

LP1089 Revision A December 2018 VT-MODEM Industrial Modems Hardware Guide

LP1088 Revision A December 2018 VT-MODEM-5 Advanced 56K Modem Hardware Guide

WARNING – Must consult the guide in all cases where this symbol is marked.

AVERTISSEMENT – Doivent consulter le guide dans tous les cas où ce symbole est marqué.

vii VT-MODEM-4 Hardware Guide



Revised 2018-12-10 Preface

Drawing No. LP1087-A

HazardousLocationandInstallationRequirements

These products should not be used to replace proper safety interlocking. No software-based device (or any other

solid-state device) should ever be designed to be responsible for the maintenance of consequential equipment or

personnel safety. In particular, Red Lion disclaims any responsibility for damages, either direct or consequential,

that result from the use of this equipment in any application.

All power, input and output (I/O) wiring must be in accordance with Class I, Division 2 wiring methods and in

accordance with the authority having jurisdiction. Suitable for use in Class I, Division 2, Groups A, B, C and D

hazardous locations, or non-hazardous locations only.

AVERTISSEMENTSPOURINSTALLATIONETENDROITSDANGEREUX

Ces produits ne doivent pas être utilisés pour remplacer le verrouillage de sécurité approprié. Aucun dispositif

basé sur un logiciel (ou tout autre dispositif à l'état solide) devraient jamais être conçus pour être responsable de

l'entretien de l'équipement consécutifs ou la sécurité du personnel. En particulier, Red Lion décline toute

responsabilité pour les dommages, directs ou indirects, résultant de l'utilisation de cet équipement dans n'importe

quelle application.

Tout pouvoir, le câblage d'entrée et de sortie (I/O) doivent être conformes aux méthodes de câblage de Classe I,

Division 2 et conformément à l'autorité compétente. Cet équipement est adapté pour une utilisation en Classe1,

Division 2, Groupes A, B, C et D ou endroits non-dangereux

seulement.

CAUTION: If the equipment is used in the manner not specified by Red Lion, the protection

provided by the equipment may be impaired.

ATTENTION: Si l' équipement est utilisé d'une manière non spécifiée par Red Lion, la protection

fournie par l'équipement peut être compromise.

CAUTION: Do not operate the equipment in a manner not specified by this manual.

ATTENTION: Ne pas faire fonctionner l'équipement d'une manière non spécifiée par ce manuel.

WARNING: Install only in accordance with Local and National Codes of authorities having

jurisdiction.

AVERTISSEMENT: Installer uniquement, conformément aux codes locaux et nationaux des

autorités ayant compétence.

VT-MODEM-4 Hardware Guide viii

PREFACE REVISED 2018-12-10

RAWING NO. LP1087-A



WARNING: Explosion Hazard – Substitution of components may impair suitability for Class I,

Division 2.

AVERTISSEMENT - Risque d'explosion - La substitution de tout composant peut nuire à la

conformité de Classe 1, Division 2.

Warning – Do not remove or replace port connections while circuit is live unless the area is known

to be free of ignitible concentrations of flammable substances. For the required marking for the

port connections, instruction shall be included indicating that the marking shall be displayed on a

prominent place on the end-enclosure..

Avertissement–Ne pas retirer ou remplacer les connexions de port alors que le circuit est vivre à

moins que la région est connue pour être libre d'ignitible les concentrations de substances

inflammables. pour le marquage obligatoire pour les connexions de port, l'enseignement doit être

inclus en indiquant que le marquage doit être affichée sur une place de premier plan dans

l'enceinte.

WARNING – Explosion Hazard – Do not disconnect equipment unless power has been switched

off or the area is known to be non-hazardous.

AVERTISSEMENT - Risque d'explosion - Ne débranchez pas l’équipement à moins que l’ali-

mentation ait été coupée ou que l’environnement est connu pour être non dangereux.

WARNING - Never install or work on electrical equipment or cabling during periods of lightning

activity.

AVERTISSEMENT - Ne jamais installer ou travailler sur équipement électrique ou de câblage pen-

dant les périodes d'activité de la foudre.

CAUTION: Do not perform any services on the unit unless qualified to do so. Do not substitute

unauthorized parts or make unauthorized modifications to the unit.

ATTENTION: Ne pas effectuer de services sur l'appareil s'il n'est pas qualifié pour le faire. Ne pas

substituer pièces non autorisées ou de modifications non autorisées de l'appareil.

ix VT-MODEM-4 Hardware Guide



Revised 2018-12-10 Preface

Drawing No. LP1087-A

WARNING: Properly ground the unit before connecting anything else to the unit. Units not

properly grounded may result in a safety risk and could be hazardous and may void the warranty.

See the grounding technique section of this manual for proper ways to ground the unit.

AVERTISSEMENT: L'unité doit être correctement mise à la terre avant tout raccordement à l'unité.

Unités pas correctement mise à la terre peuvent causer un risque de sécurité et pourraient être

dangereuses et peuvent annuler la garantie. Voir la section technique de mise à la terre dans ce

mode d'emploi pour des moyens appropriés à la masse de l'appareil.

VT-MODEM-4 Hardware Guide 1-1

Product Overview and Highlights Revised 2018-12-10

Product Overview Drawing No. LP1087-A



Chapter1ProductOverviewandHighlights

1.1ProductOverview

The VT-MODEM-4 is a rugged industrial telephone modem that has been designed for operation in electrical

enclosures installed in harsh environments. The VT-MODEM-4 supports all standard Hayes AT commands, Fax

Class 1 and Class 2 commands and S-registers and therefore can be set-up as an external modem on any PC.

The VT-MODEM-4 is compatible with most telecommunications or dial-up networking software.

A VT-MODEM-4 allows easy access to PLCs, Sixnet

I/O and other devices via dial-in telephone connections or

leased line connections. The modem may be DIN rail or panel mounted for convenient and easy installation

adjacent to other DIN rail components inside of new or existing enclosures. Most Windows

software can

communicate through a VT-MODEM-4 to remote devices to perform file transfers, diagnostics, program debugging

and many other operations.

Use the VT-MODEM-4 in dial-up and leased line applications.

The Industrial Sixnet VT-MODEM-4 allows for remote access to 3rd Party devices.

1.2ProductHighlights

1.2.1VT‐MODEM‐4

•Rated for -30° to +70°C operation

•Proven in the toughest settings form pipelines in Alberta to remote locations in Sweden

•DIN Rail or flat panel mounting

•Supports all PLCs, RTUs and other devices

•Compliant with telephone systems world-wide.

Revised 2018-12-10 Product Overview and Highlights

Drawing No. LP1087-A Product Highlights

1-2 VT-MODEM-4 Hardware Guide



1.2.2VT‐MODEM‐4FeaturesandBenefits

FEATURES AND BENEFITS

Rugged design for the toughest settings

• -30° to 70°C operating temperature range

• DIN Rail or flat panel mounting

Supports 2-wire leased line connections

• Up to 33.6K

VT-MODEM-4 Hardware Guide 1-3

Product Overview and Highlights Revised 2018-12-10

VT-MODEM-4 Specifications Drawing No. LP1087-A



1.3VT‐MODEM‐4Specifications

TELEPHONE LINE

Max. Data Range 33600 bps (V.34)

Compatibility V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22A/B, V.23, V.21, Bell212A & 103

Data Compression V.42 bis (4:1) and MNP 5 (2:1)

Error Correction V.42/MNP 3-4

Max. Fax Modem Rate 33.6 kbps

Fax Modem Compatibility ITU-T “Super” Group 3; Class 1.0, 2.0, 2.1; Group 3, Class 1 and 2, T.4, T.30, V.21,

V.27ter, V.29, V.34, V.17, and TIA/EIA TR29.2

Ringer Equivalent 0.3

Line Jack RJ11

Phone Jack RJ11

Transmit Level -11 dBm

Receiver Sensitivity -43 dBm under worst-case conditions

RS232 PORT

Max. RS232 Rate 115.2 kbps (Kilobaud)

RS232 Signal Support TXD, RXD, CTS, RTS, DCD, DTR, DSR, RI, GND

(Non- Flow Control Not Supported)

RS232 Connector DB9 female, RS232

Command Set All standard AT and S register commands including Class 1 and Class 2 Fax commands

STATUS LEDS

CD (Carrier detect) The modem has detected a carrier on the phone line (a remote modem has been

detected).

TR (Data Terminal Ready)

The PC (or Sixnet Station) has established a connection to the modem and is ready.

RD (Receive Data)

Flashes as data is received from the phone line.

TD (Transmit Data)

Flashes as data is sent out the phone line.

Power

On when power is present.

GENERAL CHARACTERISTICS

Input Power 10 - 30 VDC

Input Current 75mA @ 24VDC (typical)

52mA @ 24VDC (Sleep Inactivity Mode)

Certification FCC Part 15 and FCC Part 68; UL 508; CSA C22.2/142;

ACA TS 001- 1997; ACA TS 002-1997; AS/NZS3260-1993;

AS/NZS3548-1995; CTR21 (98/482/EC); EN55022; EIEC 950:1991;

Hazardous Locations: ANSI/ISA 12.12.01, CSA C22.2/213 (Class 1, Division 2 Groups 

A, B, C and D)

Operating Temperature -30° to 70° C

Storage Temperature -40° to 85° C

Humidity 5 to 95% RH (non-condensing)

Mounting DIN rail or panel mount

Dimensions W x 4.75L x 1.35H inches (8.2 W x 12.1 L x 3.4H cm)

Revised 2018-12-10 Hardware Installation

Drawing No. LP1087-A Mounting the VT-MODEM-4

2-4 VT-MODEM-4 Hardware Guide



Chapter2 HardwareInstallation

2.1 Mounting the VT-MODEM-4

The VT-MODEM-4 snaps onto standard DIN rail (DIN EN 50022) or is mounted to a flat panel using #6 or #8

screws. See the image below. The modem can be installed in any orientation, directly adjacent to other DIN rail

components or in any convenient location within the enclosure. The modem should be installed within 6 feet of the

device it will be connected to.

For DIN rail mounting, hook the top, rear of the modem onto the top edge of the DIN rail. Using a small flathead

screwdriver, pull down on the spring-loaded tab on the bottom of the modem and push the modem back against the

rail. Reverse these steps to remove the modem. See the image below.

SIDE VIEW

FRONT VIEW

4.47" [11.35cm]

4.75" [12.07cm]

(clear for

#8 screw)

DIN

Power

VT-MODEM-2

SIXNET

Made in USA

Phone

Line

5 4 3 2 1

9 8 7 6

GND DTR TD RD DCD

RI CTS RTS DSR

1 2 3

0.25" [0.64cm]

0.28" [0.71cm]

3.17"

1.35"

10-30 VDC

INDUSTRIAL MODEM

EN 50022

[8.05cm]

[3.44cm]

Ø0.17"

[Ø0.43]

2.92"

[7.42cm]

VT-MODEM-1,

DIN Rail (EN50022)

Insert screwdriver and pull down to release spring-loaded

tab Swing modem against rail and release

DIN Rail Mounting

VT-MODEM-4 Hardware Guide 2-5

Hardware Installation Revised 2018-12-10

Electrical Connections Drawing No. LP1087-A



2.2 Electrical Connections

2.2.1RS232Connections

Use the Sixnet

RS232 cable (VT-CABLE-MDM, which is 6 feet in length) or an equivalent cable to connect the

modem’s RS232 port (DB9 Male cable end) to the RS232 port on the SixTRAK

Gateway, VersaTRAK

RTU, or

PC (DB9 Female cable end). As shown in the image below, the VT-CABLE-MDM is a straight through serial

communications cable suitable for connecting a DTE device (PC, Gateway or VersaTRAK) to a DCE device (VT-

MODEM). For IPm

and ST-GT-1210 stations, use a straight-through Ethernet cable (not supplied) and the RJ45

to DB9 male adapter that comes with the station.

Cable requirements for PLCs and other devices may be different. Refer to the PLC or other device’s

documentation for cable pin-outs. Some PLC cables are documented in the Technical notes provided by Red Lion

technical support.

Note: The technical notes are not listed here.

Revised 2018-12-10 Hardware Installation

Drawing No. LP1087-A Electrical Connections

2-6 VT-MODEM-4 Hardware Guide



2.2.2IPmandST‐GT‐1210RS232Connections

An un-wired DB9M to RJ45F adapter is provided for the RS232 port on the controller. The pin-outs follow the EIA/

TIA-561 standard (see the figure below). Use this adapter along with a RJ45 male to RJ45 male straight-thru wired

patch cable (not included) to make a connection between the VT-MODEM-4’s COM port (DB9 Female) and the

controllers RJ45 Female RS232 port. Enable hardware flow control in the IPm’s COM port configuration. Refer to

the Sixnet Electronic catalog for more information on connecting to other equipment.

TYPICAL MODEM ADAPTING WIRING

CABLE AND DB9M

SIXNET

RJ45F PIN #,

SIGNAL NAME

RJ45F TO DB9M

ADAPTER

WIRE COLOR

DB9 MALE CONNECTOR

PIN #,SIGNAL NAME

1 N/A Blue 9 RI out

2 N/A Orange 1 DCD out

3 N/A Black 4 DTR in

4GND Red 5 GND

5 RXD in Green 2 RXD out

6 TXD out Yellow 3 TXD in

7 CTS in Brown 8 CTS out

8 RTS out White 7 RTS in

5 4 3 2 1

9 8 7 6

“Pin Insertation” side of the DB9M

VT-MODEM-4 Hardware Guide 2-7

Hardware Installation Revised 2018-12-10

Electrical Connections Drawing No. LP1087-A



2.2.33rdPartyPLC/DeviceConnections

Determine if the device you are connecting to is a DTE or a DCE device. Use a straight-through cable to connect

the VT-MODEM to a DTE 3

party device. A cross-wired cable must be used to connect the VT-MODEM to a DCE

party device. If the 3

party device does not support flow control pins 7 and 8 must be tied together.

Revised 2018-12-10 Hardware Installation

Drawing No. LP1087-A Electrical Connections

2-8 VT-MODEM-4 Hardware Guide



2.2.4VT‐MODEM‐4Power,PhoneLineConnections

2.2.4.1 DCPOWER

Connect 10 - 30 VDC to the VT-MODEM-4 as shown in the image in the section below. The modem can usually be

powered from the same DC source as other devices in the enclosure. All the screw terminals should be tightened to a

maximum of 3.48 in-lbs.

2.2.4.2 TelephoneCable

Connect analog phone lines to the RJ-11 jacks as appropriate. One RJ-11 jack is provided to connect directly to a

telephone (optional) and the second RJ-11 jack functions as the connection to the telephone network.

10-30 VDC

Input

INDUSTRIAL MODEM

Modem

RS232 Port

To Telephone

To Line

Signal

DCD out

RD out

TD in

DTR in

Sig GND

DSR out

RTS in

CTS out

RI out

Power

VT-MODEM SIXNET

Made in USA

Phone

Line

10-30 VDC

1 2 3

RI CTS RTS DSR

GND DTR TD RD DCD

5 4 3 2 1

9 8 7 6

VT-MODEM-4 Hardware Guide 2-9

Hardware Installation Revised 2018-12-10

Modem Configuration Drawing No. LP1087-A



2.3 Modem Configuration

2.3.1ConfiguringaVT‐MODEM‐4

All VT-MODEM models are factory configured to use the default communication settings for Sixnet

Stations. If a

VT-MODEM-4 is connected to a PLC, PC or other non-Sixnet device, then it may be necessary to reconfigure the

modem. To modify these parameters use the VT-MODEM Setup Wizard (v2.00 or later) located at 

www.redlion.net/resources/software/sixnet-software/automation-devices-software-firmware

. The parameters can

also be modified using a Windows

terminal program.

2.3.1.1 ATCommandStringAtPower‐up

Upon power-up, a Sixnet station can send a command string to a VT-MODEM-4. This capability can be used to

assure that the modem is set to a particular mode of operation, such as auto answer mode. Refer to the “Setting

Modem String” topic in the Sixnet I/O Tool Kit program’s online help for information on this capability. The Sixnet

Station can send any standard AT command.

2.3.2ConfiguringaVT‐MODEM‐4asanExternalModemonaPC

The VT-MODEM-4 can be connected directly to a PC. The modem will need to be installed in Windows prior to use.

Here are instructions to install the modem in most Windows Operating Systems.

2.3.2.1 ModemInstallationinWindows®10

1. Connect the DC power, communications cable (VT-CABLE-MDM or equivalent) and telephone line as

described above.

2. In the search box next to the Windows button type “Phone and Modem” and select the Phone and Modem in

Control Panel.

3. In the Modems tab, click the “Add” button. Do not select the “Don’t detect my modem, I will select it from a

list”. Instead, click Next and allow Windows to search the com ports and detect the modem.

4. Windows should find a modem called Standard Modem. Click Next and Windows will complete installation of

the Standard Modem. (Alternatively, click Change and select “Standard Modem Types” from the Manufactur-

ers list, and “Standard 28800 bps Modem” from the Models list.)

5. To verify that the modem has been installed, go to the “Phone and Modems” in Control Panel, then go to the

“modems” tab. The modem should be listed as either a “Standard Modem” or a “Standard 28800 bps Modem”

depending on the steps followed above.

6. Upon re-booting the machine, Windows may still find the VT-MODEM-4 as new hardware. If this happens,

select “Do not install a driver (Windows will not prompt again)”.

2.3.2.2 ModemInstallationinWindows®7

1. Select StartControl Panel, and then double click the Phone and Modems icon.

2. In the Modems tab, click the “Add” button. Do not select the “Don’t detect my modem, I will select it from a

list”. Instead, click Next and allow Windows to search the com ports and detect the modem.

3. Windows should find a modem called Standard Modem. Click Next and Windows will complete installation of

the Standard Modem. (Alternatively, click Change and select “Standard Modem Types” from the Manufactur-

ers list, and “Standard 28800 bps Modem” from the Models list.)

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