Sixnet VT-MODEM-5 Manual de usuario

VT-MODEM-5 User Manual Page 1 of 23 Last Revised: 3-Jun-05

SIXNET •Box 767 •Clifton Park, NY 12065 USA •+1 (518) 877-5173 •FAX +1 (518) 877-8346 •mailto:[email protected]

VT-MODEM-5

Advanced 56K Modem

Installation & Maintenance

Contents at a Glance:

Section 1 Overview 2

Section 2 Performance Specifications 3

Section 3 VT-MODEM Mounting 4

Section 4 Electrical Connections 5

Section 5 Modem Configuration 7

Section 6 Remote Configuration 10

Section 7 Callback Security 11

Section 8 Maintenance Information 13

Section 9 Product Support & Other Documents 14

Applicable standards and certifications:

Total Quality Hazardous Locations Standard Locations European Directives Marine & Offshore US Emissions

This manual applies to the following product:

Advanced 56K Modem (VT-MODEM-5##)

VT-MODEM-5 User Manual Page 2 of 23 Last Revised: 3-Jun-05

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Section 1 Overview

The VT-MODEM-5 is a rugged industrial telephone modem that is designed to operate in an electrical

enclosure for harsh environments. The VT-MODEM-5 can be set-up as an external modem on any PC

because it flexibly supports all standard Hayes AT commands, Fax Class 1 and Class 2 commands, and S-

registers. The VT-MODEM-5 is compatible with most telecommunications or dial-up networking software.

The modem may be DIN rail or panel mounted for convenient and easy installation adjacent to other DIN

rail components inside new or existing enclosures. Most Windows software can communicate through a VT-

MODEM to remote devices to perform file transfers, diagnostics, program debugging and many other

operations.

Remote Configuration: The VT-MODEM-5 allows the user to configure the remote modem over the Public

Switched Telephone Network (PSTN). You can easily maintain and perform configuration changes from the

comfort of your home or office.

Callback Security: Security is a major concern today. The VT-MODEM-5 addresses

this concern with the Callback Security feature. This feature allows only users who know

the passwords at predefined locations access the device connected to the VT-MODEM-

5’s RS232 port. The password is held only in the answering modem and is completely

seamless to the device connected to its serial port. The figure below illustrates the

complete Callback Security procedure. The big red numbers indicate the order of events

in the Callback Security procedure.

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Section 2 Performance Specifications

Telephone Line

Max. Data Rate 56K bps (V.90 and V.92)

Compatibility V.92, V.90, 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

Callback Security Yes

Remote Configuration Yes

Ringer Equivalent 0.3

Line Jack RJ11

Phone Jack RJ11

RS232 Port

Max. RS232 Rate 115.2 kbps (Kilobaud)

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

(None - 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 C22.2/14;

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

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

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)

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Section 3 VT-MODEM Mounting

The VT-MODEM-5 snaps onto standard DIN rail (DIN EN 50022) or is mounted to a flat panel using #6 or

#8 screws. See Figure 3-1. 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 SIXTRAK gateways and VersaTRAK RTUs, use the SIXNET

RS232 cable (VT-CABLE-MDM), which is 6 feet in length.

Figure 3-1: VT-MODEM-5 DIMENSIONS

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

head 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 Figure 3-2 below.

Figure 3-2: DIN RAIL MOUNTING

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Section 4 Electrical Connections

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 a SIXTRAK Gateway,

VersaTRAK RTU or PC (DB9 Female cable end). As shown in Figure 4-1, 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 on the

SIXNET Programmable I/O for Windows CD.

Figure 4-1: VT-CABLE-MDM Wiring

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IPm and ST-GT-1210 RS232 Connections:

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

the EIA/TIA-561standard (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-5’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 Adapter Wiring:

SIXNET RJ45F to DB9M

RJ45F Pin #, Adapter DB9 Male Connector

Signal Name wire color Pin #, Signal Name

1 N/A Blue 9 RI out

2 N/A Orange 1 DCD out

3 N/A Black 4 DTR in

4 GND 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

RTS in

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 3rd party device. A cross-wired cable must be used to connect the VT-

MODEM to a DCE 3rd party device. If the 3rd party device does not support flow control pins 7 and 8 must

be tied together.

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VT-MODEM-5 Power, Phone Line Connections:

DC Power Wiring

Connect 10 - 30 VDC to the VT-MODEM-5 as shown in Figure 4-2. 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.

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.

Figure 4-2: VT-MODEM-5 WIRING

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Section 5 Modem Configuration

Configuring a VT-MODEM-5:

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

Stations. If a VT-MODEM 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 on the latest SIXNET CD or www.sixnetio.com. The parameters can also be modified using

a Windows terminal program or Windows HyperTerminal (See Configuring Windows HyperTerminal to

configure the VT-MODEM-5 for more information).

AT Command String at Power-up

Upon power-up, a SIXNET Station can send a command string to a VT-MODEM-5. 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 “Set 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.

Configuring a VT-MODEM-5 as an External Modem on a PC:

The VT-MODEM-5 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.

Modem Installation in Windows 95/98

Plug and Play method (recommended):

1) With the PC off, connect DC power and the telephone line to the VT-MODEM-5. Connect a

communications cable (VT-CABLE-MDM or equivalent) between the VT-MODEM-5 and the PC. Turn

on the PC. During the boot-up process, Windows should detect the modem and display the New

Hardware Found dialog box.

2) Make the selection “Select from a list of alternative drivers”.

3) The Select Device dialog will be displayed. In the column labeled Manufacturers, select “Standard

Modem Types”. In the column labeled Models, select “Standard 28800 bps Modem”. Click OK.

Windows will then complete the boot-up process. (The standard Windows driver is used for the VT-

MODEM-5. Although the VT-Modem supports baud rates to 33,600 bps, the selections in Windows are

limited to 28800 bps.)

4) To verify that the modem has been installed, select Start !Settings !Control Panel, and then double

click the Modems icon. The modem should be listed as “Standard 28800 bps Modem”.

Here is an alternate modem installation procedure (use if the PC is already powered up):

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

described above.

2) Select Start !Settings !Control Panel, and then double click the Modems icon.

3) The Install New Modem dialog box will appear. 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. (Alternately, click Change and select “Standard Modem Types”

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

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5) To verify that the modem has been installed, select Start !Settings !Control Panel, and then double

click the Modems icon. 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-5 as new hardware. If this

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

Modem Installation in Windows NT

1) Select Start !Settings !Control Panel, and then double click the Modems icon.

2) The Install New Modem dialog box will appear. 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. (Alternately, click Change and select “Standard Modem Types”

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

4) To verify that the modem has been installed, select Start !Settings !Control Panel, and then double

click the Modems icon. The modem should be listed as either a “Standard Modem” or a “Standard

28800 bps Modem” depending on the steps followed above.

Once the VT-MODEM-5 modem has been added to your Windows 95, 98 or NT system, it is ready for use.

If you are using SIXNET I/O, you can use the SIXNET Sixdial software to dial out and establish a

connection with your SIXNET I/O. The Sixdial utility allows other SIXNET programs to perform operations

such as data transfers, hardware configuration and diagnostics, and ISaGRAF programming. (Refer to the

on-line help in the Sixdial utility for more information on these software tools).

If you are using a PLC or other device, refer to the documentation for that device as necessary.

To Remove a Modem

If it ever becomes necessary to re-install the modem for any reason, select Start !Settings !Control Panel,

and then double click the System icon. Next, click the Device Manager tab. The list should display a

Modems icon. Double click the Modems icon. Highlight the modem to be removed and then click the

Remove button. To reinstall the modem, follow the installation steps as previously described.

Configuring Windows HyperTerminal to configure the VT-MODEM-5

Step 1: Connect your Industrial Modem to your computer using the VT-CABLE-MDM (or an

equivalent cable). Open Windows HyperTerminal. (This program is included with most Microsoft

Windows Operating Systems. Refer to the VT-MODEM-5 on-line manual for more details.) Enter a name

for your connection.

Step 2: Under “Connect Using” select Direct to Com “X”, where “X” is the COM port the modem is

connected to. Another window will appear. Enter the following settings, where Bits per second is the desired

PLC baud rate, then press OK:

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Choose the baud rate that matches the PLC or other device that will be connected to the modem. Anytime a

setting is saved using &W0 or &W1, the RS232 baud rate is memorized by the VT-Modem. The saved baud

rate will be used for future communications with any attached device that does not initiate communications

with the modem (such as most PLCs).

Step 3: You should be at a blank screen. Test that you are connected by typing AT <enter>. The modem

should respond with an OK if you are connected. Now enter these commands. (Press <enter> after each.)

__ To check whether your Industrial Modem is communicating, look at the “TD” and “RD” LED's on

the modem. They will light up when communicating.

__ Use the AT commands listed in Section 6 to enter in the appropriate parameters. For example, to

ignore DTR type AT&D0<enter> the modem should respond with an OK. To save the parameters to

the modems NVRAM type AT&W0<enter> to store parameters in stored profile 0 and

AT&W1<enter> to store parameters in Stored Profile 1.

__ To dial a number in HyperTerminal, you can use the command: ATDT<number>. When you have

successfully connected to another modem, it will show the baud rate at which you are connected.

Example: ATDT15188778346

__ To Hang-up the connection Open the HyperTerminal session saved from the previous steps. Type

+++, you should get an OK back, then type ATH <enter>. The resulting OK indicates that the

modem-to-modem connection is terminated.

__ If you are using a terminal program other than HyperTerminal, the steps may be different. However, the

commands will remain the same.

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