StarTech.com PCI2S485 Manuale utente

PCI RS-422/485 Card

PCI2S485 Instruction Manual

Actual product may vary from photo

2 port PCI RS-422/485 Card with DB9

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This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in accordance with the instructions,

may cause harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this equipment does cause harmful

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:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

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This manual may make reference to trademarks, registered trademarks, and other protected names

and/or symbols of third-party companies not related in any way to StarTech.com. Where they occur

these references are for illustrative purposes only and do not represent an endorsement of a

product or service by StarTech.com, or an endorsement of the product(s) to which this manual

applies by the third-party company in question. Regardless of any direct acknowledgement

elsewhere in the body of this document, StarTech.com hereby acknowledges that all trademarks,

registered trademarks, service marks, and other protected names and/or symbols contained in this

manual and related documents are the property of their respective holders.

Instruction Manual

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

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Hardware Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

RS-485 2-wire mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Application Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Instruction Manual

Thank you for purchasing a StarTech.com PCI RS-422/485 Card. This high performance

RS-422/485 multiport serial PCI card works well with two-wire (with Auto Transceiver Turn

Around feature, ATTATM) and four-wire configurations and offers 16C950 compliant

UARTs for broad serial device compatibility.

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•RS-485 mode supports Auto Transceiver Turn Around (ATTA)

Features

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System requirements:

•An IBM compatible computer with a 486 or faster processor (Pentium or higher

recommended)

Package contents:

•1 x Serial PCI Card

This package should contain:

•1 x Instruction Manual

•1 x Driver CD

•Operating systems: Windows 95/98/ME/2000/XP, NT 4.0, Linux

•An available PCI slot

•Easily fits a 3.3V/ 5V PCI and PCI X slot

•PCI 2.2 specification compliant

•128-byte deep FIFO per transmitter and receiver

•High Performance 16C950 UART with maximum data transfer rate up to 921kbps

Instruction Manual

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JP7:S1

Terminator

Enable/Disable

JP1: RS-422/485

Mode Selector

JP5:UART

Clock Speed

Selector

JP8:S2

Terminator

Enable/Disable

Board Layout

JP5: UART Input Clock Speed Selector

UART Input Clock Speed = 1.8432MHz.

Maximum baud rate is 115.2Kbps

Default

setting

UART Input Closk Speed = 14.7456MHz

Maximum baud rate is 926.1Kbps

Instruction Manual

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JP1: RS-422/485 Mode Selector

Jumper Name Jumper Positions Mode and Termination Resistor Setting

485/422

485

(Default) 2-wire RS-485 mode

422 4-wire RS-422 mode

RTS/AUTO

RTS RS-485 Transmitter Buffer Enable is

Controlled by RTS (active high)

AUTO

(Default)

RS-485 Transmitter Buffer is controlled

automatically by ATTATM hardware circuit

ECHO/NO_ECHO

ECHO Transmitting data will be echoed back

NO_ECHO

(Default) No echo data

LOOP/NO_LOOP

LOOP RTS will be connected to CTS

NO_LOOP

(Default) RTS and CTS operate normally

Please note: When set to “422” mode, the other settings (AUTO, ECHO and

LOOP settings) will have no effect.

Echo mode is used to detect data collisions. If the echoed data

was not equal to the transmitted data, then data collisions are

occurring.

If you want to set the RS-485 transceiver to “AUTO” mode, you

must duplicate this setting from the Windows Device Manager. You

only need to perform this step once, as this information will be

retained by Windows.

Please note that S1 and S2 have individual settings, and need to

be configured separately.

Instruction Manual

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S1, S2 Connector Pin Assignments

6 9

Pin Signal

1TXD- (DATA-)

2TXD+ (DATA+)

3RXD+

4RXD-

5GND

6 RTS-

7RTS+

8CTS+

9CTS-

S1, S2 Terminator Settings

TXD Terminator

RXD Terminator

RTS Terminator

CTS Terminator

Jumper Name Jumper Settings Termination Resistor Setting

JP7 (TXD) IN TXD Terminator Enabled

OUT (Default) TXD Terminator Disabled

JP7 (RXD) IN (Default) RXD Terminator Enabled

OUT RXD Terminator Disabled

JP7 (RTS) IN RTS Terminator Enabled

OUT (Default) RTS Terminator Disabled

JP7 (CTS) IN(Default) CTS Terminator Enabled

OUT CTS Terminator Disabled

Jumper Name Jumper Settings Termination Resistor Setting

JP8 (TXD) IN TXD Terminator Enabled

OUT (Default) TXD Terminator Disabled

JP8 (RXD) IN (Default) RXD Terminator Enabled

OUT RXD Terminator Disabled

JP8 (RTS) IN RTS Terminator Enabled

OUT (Default) RTS Terminator Disabled

JP8 (CTS) IN(Default) CTS Terminator Enabled

OUT CTS Terminator Disabled

Please note:IN represents that the jumper is installed

OUT represents that the jumper is

not

installed

Instruction Manual

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WARNING! PCI cards, like all computer equipment, can be severely

damaged by static electricity. Be sure that you are properly grounded before

opening your computer case or touching your card. StarTech.com

recommends that you wear an anti-static strap when installing any computer

component. If an anti-static strap is unavailable, discharge yourself of any

static electricity build-up by touching a large grounded metal surface (such

as the computer case) for several seconds. Also, be careful to handle the

card by its edges and not the gold connectors.

1. Remove the computer cover. For more detailed instruction on how to perform this

step, please refer to the documentation that was included with your computer at the

time of purchase.

2. Locate an empty PCI slot and remove the metal bracket covering the accompanying

empty port/socket.

3. Position the card above the open PCI slot, ensuring that the card is properly aligned

with the slot. Insert the card firmly into the slot, distributing force evenly across the

length of the board. Once inserted, secure the card into the adjoining socket

(previously covered by metal bracket), using the correct size screw.

4. Replace the computer cover and re-connect all power to the computer.

Hardware Installation

Software Installation

The necessary driver files are in ZIP format (e.g. V6515_RS422_485.ZIP) and are

located in E:\IO\OXFORD\RS422_485 (where E: denotes the CD/DVD-ROM drive.

Please copy the file to your local hard drive (presumably C:) and unzip it before

proceeding with installation.

1. When the Found New Hardware Wizard appears, click Next to continue.

2. Select Install from a list or specific location (advanced) and

click Next.

3. Select Include this location in the search and click Browse to

specify the driver’s location.

4. Click Next to continue, then click on Finish to complete installation.

Windows 98, ME, 2000, XP, 2003

Windows NT

Because Windows NT does not support plug and play, you

will need to locate the Install_Serial.exe file (in the

D:\IO\OXFORD\WinNT4 folder), and double click on the

executable file. Follow the prompts to complete installation.

Instruction Manual

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Windows 2000, XP

1. In the PCI Communications Port Properties window, click on the Settings tab.

2. Under Hardware config, select RS422/485, and change the RS485 buffer enable to

Active Low, using the dropdown box provided.

3. Repeat steps 1 and 2 for the remaining port.

Windows 98, ME

1. In the PCI Communications Port Properties window, click on the Settings tab.

2. Change the DTR function to RS485 Buf_En Active high, using the dropdown box

provided.

3. Repeat the steps 1 and 2 to set the remaining port.

Instruction Manual

Baud Rate

1. Change the UART input clock jumper (JP5) to HI, as mentioned in the section entitled

JP5: UART Input Clock Speed Selector.

2. Right-click on My Computer and select Manage.

3. Choose Device Manager and double-click on Ports.

4. You will notice the added ports, listed as PCI Communications Port(s). Double-click

on the COM Port you wish to configure, select Data rate, click on Detect Crystal

Frequency, then OK. Repeat this step for the remaining port.

Windows 2000/XP

By default, PCI2S485 is set to a baud rate of 115.2Kbps (maximum). To increase the

baud rate to 921.6Kbps maximum:

Windows 98/ME

1. Change the UART input clock jumper (JP5) to HI, as

mentioned in the section entitled JP5: UART Input

Clock Speed Selector.

2. Right-click on My Computer and select Properties.

3. Choose Device Manager and double-click on Ports.

4. You will notice the added ports, listed as PCI

Communications Port(s). Double-click on the COM

Port you wish to configure, select Data rate, and put

a checkmark next to Detect Crystal Frequency, by

clicking in the box provided. Click on OK to save

this setting. Repeat this step for the remaining port.

Indice

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