SeaLevel SIO-485.LPCI Manuel utilisateur

SIO-485.LPCI

User Manual | 7107

Contents

CONTENTS............................................................................................................................................................................................................................2

INTRODUCTION...................................................................................................................................................................................................................3

BEFORE YOU GET STARTED..............................................................................................................................................................................................4

SOFTWARE INSTALLATION ...............................................................................................................................................................................................6

PHYSICAL INSTALLATION.................................................................................................................................................................................................8

CARD SETUP........................................................................................................................................................................................................................9

ELECTRICAL CHARACTERISTICS...................................................................................................................................................................................12

APPENDIX A –TROUBLESHOOTING.............................................................................................................................................................................13

APPENDIX B –HOW TO GET ASSISTANCE..................................................................................................................................................................14

APPENDIX C –ELECTRICAL INTERFACE......................................................................................................................................................................15

APPENDIX D –ASYNCHRONOUS COMMUNICATIONS.............................................................................................................................................16

APPENDIX E –SILK SCREEN –7107 PCB ....................................................................................................................................................................17

APPENDIX F –COMPLIANCE NOTICES.........................................................................................................................................................................18

WARRANTY ........................................................................................................................................................................................................................19

Introduction

The SIO-485.LPCI, Item Number 7107, is a low profile PCI module that provides a single RS-422/485 serial

interface port. The board is designed using the OX16C950 UART, which features a 128-byte FIFO and

flexible clock prescalar (from 1 to 31.875), with support for 9-bit protocol and isochronous mode.

RS-422 provides excellent communications for long distance device connections up to 4000 ft., where

noise immunity and high data integrity are essential.

RS-485 is optimized for ‘Multi-Drop’ or ‘Party-line’ operations selecting data from multiple peripherals (as

many as 31 devices can be connected on an RS-485 bus).

The SIO-485.LPCI is designed to be used with a variety of Operating Systems including Windows, Linux, and

DOS. The SeaCOM API (Application Programmer Interface) included in the software for the SIO-485.LPCI

provides a variety of useful high-level function calls implemented as a Windows dynamic link library (DLL)

and as a Linux kernel module and library. In addition to the API, SeaCOM includes sample code and utilities

to simplify software development.

Other Sealevel Low Profile PCI Serial I/O Products

Model No.

Part No.

Description

COMM+850.LPCI

(P/N 7104)

- 1-Port RS-232

Ultra 530.LPCI

(P/N 7106)

- 1-Port RS-232/422/485

Ultra COMM+I.LPCI

(P/N 7108)

- 1-Port Isolated RS-232/422/485

Ultra COMM+2.LPCI

(P/N 7205)

- 2-Port RS-232/422/485

COMM+4.LPCI

(P/N 7406)

- 4-Port RS-232

COMM+8.LPCI

(P/N 7803)

- 8-Port RS-232

Before You Get Started

What’s Included

The SIO-485.LPCI is shipped with the following items. If any of these items are missing or damaged, please

contact Sealevel for replacement.

•SIO-485.LPCI Adapter

•7107 includes low profile PCI bracket

•7107S includes standard size PCI bracket

Advisory Conventions

Warning

The highest level of importance used to stress a condition where damage could result to the

product, or the user could suffer serious injury.

Important

The middle level of importance used to highlight information that might not seem obvious or a

situation that could cause the product to fail.

Note

The lowest level of importance used to provide background information, additional tips, or other

non-critical facts that will not affect the use of the product.

Optional Items

Depending upon your application, you are likely to find one or more of the following items useful for

interfacing the SIO4-104.485. All items can be purchased from our website (http://www.sealevel.com/) or

by calling 864-843-4343.

DB9 Female to RJ45 modular adapter (Item Number DB112)

The DB112 is pinned out for RS-485 signals and converts the 7107 DB9 Male connector to an RJ45

connection. Designed for use with SeaI/O M-series modules, it takes power from pin 9 on the 7107

and sends it out over any standard RJ45 patch cable. This eliminates the need for an external power

supply when communicating with SeaI/O RS-485 devices.

DB9 Male to DB9 Female Optomux adapter (Item Number DB103)

The DB103 is designed to convert a Sealevel DB9 Male connector to a pinout compatible with AC24AT

and AC422AT Opto-22 ISA bus cards. This allows Optomux devices to be controlled from any Sealevel

RS-422 board with a DB9 Male connector.

DB9 Male to DB9 Male Sony SMPTE 207M cable (Item Number CA190)

This cable allows any Sealevel RS-422 adapter with a DB-9 to connect directly to a Sony (or

compatible) 207M 9-Pin connector.

Software Installation

Windows Installation

Do not install the Adapter in the machine until the software has been fully installed.

Only users running Windows 7 or newer should utilize these instructions for accessing and

installing the appropriate driver via Sealevel’s website. If you are utilizing an operating system

prior to Windows 7, please contact Sealevel by calling 864.843.4343 or emailing

[email protected]om to receive access to the proper driver download and installation

instructions.

1. Begin by locating, selecting, and installing the correct software from the Sealevel software

driver database.

2. Type in or select the part number (#7107) for the adapter from the listing.

3. Select “Download Now” for SeaCOM for Windows.

4. The setup files will automatically detect the operating environment and install the proper

components. Follow the information presented on the screens that follow.

5. A screen may appear with text similar to: “The publisher cannot be determined due to the

problems below: Authenticode signature not found.” Please click the ‘Yes’ button and

proceed with the installation. This declaration simply means that the operating system is

not aware of the driver being loaded. It will not cause any harm to your system.

6. During setup, the user may specify installation directories and other preferred

configurations. This program also adds entries to the system registry that are necessary

for specifying the operating parameters for each driver. An uninstall option is also included

to remove all registry/INI file entries from the system.

7. The software is now installed, and you can proceed with the hardware installation.

Linux Installation

You MUST have “root” privileges to install the software and drivers.

The syntax is case sensitive.

SeaCOM for Linux can be downloaded here: https://www.sealevel.com/support/software-seacom-linux/.

It includes the README and the Serial-HOWTO help files (located at seacom/dox/howto). This series of

files both explains typical Linux serial implementations and informs the user about Linux syntax and

preferred practices.

User can use a program such as 7-Zip to extract the tar.gz file.

In addition, the software selectable interface settings can be accessed by referencing

seacom/utilities/7107mode.

For additional software support, including QNX, please call Sealevel Systems’ Technical Support, (864) 843-

4343. Our technical support is free and available from 8:00 AM - 5:00 PM Eastern Time, Monday through

Friday. For email support contact: su[email protected]om.

3rd Party Software Support

For the most up to date information on third party software support, please visit

https://www.sealevel.com/support/3rd-party-software-support/.

Physical Installation

The adapter can be installed in any PCI expansion slot.

Do not install the Adapter in the machine until the software has been fully installed.

1. Turn off PC power. Disconnect the power cord.

2. Remove the PC case cover.

3. Locate an available PCI slot and remove the blank metal slot cover.

4. Gently insert the PCI adapter into the slot. Make sure that the adapter is seated properly.

5. Replace the screw. (This is required to ensure FCC Part 15 compliance.)

6. Replace the cover.

7. Connect the power cord

8. Installation is finished.

The SIO-485.LPCI is now ready for use.

Physical Connection

RS-422

Signal

Name

Pin #

Mode

GND

Ground

TX +

Transmit Data Positive

Output

TX-

Transmit Data Negative

Output

RX+

Receive Data Positive

Input

RX-

Receive Data Negative

Input

5V/12V

Power selected by E1

Output

RS-485

Signal

Name

Pin #

Mode

GND

Ground

DATA+

Data Positive

I/O

DATA-

Data Negative

I/O

5V/12V

Power selected by E1

Output

Card Setup

Address and IRQ Selection

The SIO4-104.485 is automatically assigned I/O addresses and IRQs by your motherboard BIOS. Only the

I/O address may be modified by the user. Adding or removing other hardware may change the assignment

of I/O addresses and IRQs.

Electrical Interface Selection

The SIO-485.LPCI can be individually configured via SW1 as RS-422, or as a two/four wire RS-485 interface.

The following table illustrates the electrical modes for SW1:

Electrical Mode

Switch Position 1

Switch Position 2

Switch Position 3

RS-422

Off

RS-485 4 Wire

Off

RS-485 2 Wire

Off

Line Termination

Typically, each end of the RS-485 bus must have line-terminating resistors (RS-422 terminates at the receive

end only). A 120-ohm resistor is across the RS-422/485 data input in addition to a 1K-ohm pull-up/pull-

down combination that biases the receiver inputs. The 120-Ohm termination is ‘switched’ in or out by SW1

(silk screen position ‘T’). With the switch in the ‘On’ position, termination is present. With it in the ‘Off’

position termination is removed.

RS-485 'Echo'

The RS-485 ‘Echo’ is the result of connecting the receiver inputs to the transmitter outputs. Every time a

character is transmitted; it is also received. The SIO-485.LPCI automatically suppresses this ‘Echo.’

Clock Modes

The SIO-485.LPCI utilizes a 14.7456 MHz oscillator. This is eight times faster than the standard COM: port

oscillator, which typically is 1.8432 MHz. This allows the adapter to achieve a maximum data rate of

921.6Kbps. The following sections outline the baud rate calculations and instructions for achieving your

desired baud rate.

Baud Rates and Oscillator Value

The following table shows some common data rates and the rates you should choose to achieve them

when using the SIO-485.LPCI. If the O/S of choice is Windows 95/98/ME/2000/NT/XP, the oscillator value

(14.7456 MHz) should be entered into the ‘Advanced Tab’ on 95/98/Me/2000/XP Device Manager applet.

Typically, this is done automatically when the Sealevel Software driver is loaded.

When using Windows NT, the ‘Advanced Ports’ applet in the Control Panel should be launched and the

oscillator value entered manually in the ‘Advanced’ tab, or all data rates will be eight (8) times the selected

rate. For example, if a data rate of 19.2Kbps is selected, the actual data rate will be 153.6Kbps.

When using any other OS (i.e., Linux) the following table should be used:

For this Data Rate

Choose this Data Rate

1200 bps

150 bps

2400 bps

300 bps

4800 bps

600 bps

9600 bps

1200 bps

19.2K bps

2400 bps

38.4K bps

4800 bps

57.6K bps

7200 bps

76.8K bps

9600 bps

115.2K bps

14.4K bps

153.6K bps

19.2K bps

230.4K bps

28.8K bps

460.8K bps

57.6K bps

921.6K bps

115.2K bps

If your communications package allows the use of baud rate divisors, choose the appropriate divisor from

the following table:

For this Data Rate

Choose this Divisor

1200 bps

768

2400 bps

384

4800 bps

192

9600 bps

19.2K bps

38.4K bps

57.6K bps

115.2K bps

230.4K bps

460.8K bps

921.6K bps

If you are utilizing an operating system developed after Windows XP and need additional data

rates for a different O/S not provided in the tables above, please contact Sealevel’s Technical

Support by calling 864.843.4343 or emailing support@sealevel.com to receive access to the

proper driver download and installation instructions.

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