SeaLevel SIO-104+2 Series Manuale utente

SIO-104+2

User Manual | 3502

Contents

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

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

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

CARD SETUP ........................................................................................................................................................5

INSTALLATION .................................................................................................................................................... 8

TECHNICAL DESCRIPTION ...............................................................................................................................10

SPECIFICATIONS ...............................................................................................................................................12

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

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

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

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

APPENDIX E – PC/104 ......................................................................................................................................17

APPENDIX F – SILK SCREEN ............................................................................................................................18

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

Introduction

Overview

The SIO-104+2 series provides the ultimate serial connection for your PC/104 application. The SIO-104+2

when configured in the RS-422/485 mode provides an interface capable of long length, high-speed

communications, or when configured in the RS-232 mode provides a standard RS-232C interface that is

fully compatible all popular modem software, network operating systems software, and mouse drivers.

Before You Get Started

What’s Included

The SIO-104+2 is shipped with the following items. If any of these items are missing or damaged, contact

the supplier.

•SIO-104+2 Serial Interface Adapter

•Nylon Mounting Hardware Kit (PC304-NK)

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 Accessories

•CA152 - Terminates the SIO-104+2 10 pin header to a DB9M connector. This cable provides

the standard DB9 pin out for RS-232 (aka EIA/TIA574) and also provides the Sealevel Systems’

DB9 standard for RS-422/485.

•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. When used with the optional

CA152 cable assembly it allows Optomux devices to be controlled with the SIO-104+2.

•CA190 - When used with the optional CA152 cable assembly it allows connection directly to a

Sony (or compatible) 207M "9 Pin" connector.

Card Setup

The SIO-104+2 contains two DIP-Switches and a jumper strap for each port, which must be set for proper

operation.

Switches SW1A and SW2A

Address Selection

Each port on the SIO-104+2 occupies eight consecutive I/O locations. A DIP-switch is used to set the base

address for these locations. SW1A sets the I/O address for port 1 and SW2A sets port 2. The following

table shows the addressing options available. If different address options are required, please contact

Sealevel Systems Technical Support about a custom PAL option.

123

3F8 On On On

2F8 On On Off

3E8 On Off On

2E8 On Off Off

2A0 Off On On

300 Off On Off

328 Off Off On

Disabled Off Off Off

Figure 1 - Address Selection Table

Each COM: port in the system should have a unique address. Typically COM1: - COM4: addresses

are 3F8, 2F8, 3E8 and 2E8 Hex.

Refer to Appendix A for common address contentions.

Port Enable / Disable

Each port on the SIO-104+2 can be enabled or disabled by setting the three switches in the ‘Off’ position.

The port is enabled when a valid I/O selection is made. If any port is disabled, be sure to disable the interrupt

request for that port by removing the IRQ jumper.

Switches SW1B and SW2B

RS-485 Enable Modes (SW1B and SW2B position 1)

RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri-state driver that will allow the

electrical presence of the driver to be removed from the line. The driver is in a tri-state or high impedance

condition when this occurs. Only one driver may be active at a time and the other driver(s) must be tri-

stated. The output modem control signal Request To Send (RTS) is typically used to control the state of

the driver. Some communication software packages refer to RS-485 as RTS enable or RTS block mode

transfer.

One of the unique features of the SIO-104+2 is the ability to be RS-485 compatible without the need for

special software or drivers. This ability is especially useful in Windows, Windows NT, and OS/2

environments where the lower level I/O control is abstracted from the application program. This ability

means that the user can effectively use the SIO-104+2 in an RS-485 application with existing (i.e. standard

RS-232) software drivers.

DIP-Switch SW2A and SW2B are used to control the RS-485 mode functions for the driver circuit. The

selections are:

‘Auto’ enable (Switch position 1 ‘Off’). The ‘Auto’ enable feature automatically enables/disables the RS-485

interface via on board circuitry.

‘RTS’ enable (Switch position 1 ‘On’) The ‘RTS’ mode uses the ‘RTS’ modem control signal to enable the RS-

485 interface and provides backward compatibility with existing software products.

Electrical Interface Selection (Positions 2 and 3)

Positions 2 and 3 select the Electrical Interface for the SIO-104+2, the following table represents the only

valid options:

Mode M0 M1

RS232 OFF OFF

RS422 OFF ON

RS485 with echo ON OFF

RS485 no echo ON ON

Line Termination (Position 4-9)

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 each RS-422/485 input in addition to a 1K-ohm pull-up/pull-down

combination that biases the receiver inputs. Switches SW1B and SW2B allows customization of this

interface to specific requirements. Each jumper position corresponds to a specific portion of the interface.

If multiple SIO-104+2 adapters are configured in a RS-485 network, only the boards on each end should

have jumpers T, P & P ON. Refer to the following table for each position’s operation:

Name Function

PD Adds or removes the 1K ohm pull-down resistor in the RS-422/RS-485 receiver circuit (Receive

data only).

PU Adds or removes the 1K ohm pull-up resistor in the RS-422/RS-485 receiver circuit (Receive data

only).

BS Use only for RS-422/485

T Adds or removes the 120-ohm termination.

L Connects the TX+ to RX+ for RS-485 two-wire operation.

L Connects the TX- to RX- for RS-485 two-wire operation.

Typical settings for SW1B and SW2B

Mode

(Switch position)

M0 (2)

M1 (3)

PD (4)

PU (5)

BS (6)

T (7)

L (8)

L (9)

RS232

OFF

RS422

OFF

RS485 with echo

OFF

ON*

OFF

RS485 no echo

ON*

* If at end of RS485 bus turn termination ON

If in middle leave OFF

Clock Modes

The SIO-104+2 employs a 7.3728 MHz clock. This provides for data rates up to 460.8Kbps.

Installation

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] 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. Select the Part Number (3502) for your device from the listing.

3. Click the ‘Download Now’ button for SeaCOM for Windows.

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

proper components.

To confirm that the SeaCOM driver has been successfully installed, click on the ‘Start’ button, and then

select ‘All Programs’. You should see the ‘SeaCOM’ program folder listed.

You are now ready to proceed with connecting the 3502 to your system. Refer to the Hardware

Installation section for details.

Other Operating Systems

Refer to the appropriate section of the Serial Utilities Software.

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/3502mode.

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: support@sealevel.com.

Physical Installation

Extreme care should be taken when installing the adapter to avoid causing damage to the connectors. After

the adapter is installed, connect your I/O cables. Please note these headers are keyed so that pin 1 of the

cable matches pin 1 of the connector. Refer to Card Setup for information on setting the address and IRQ

before inserting the adapter onto the stack.

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

2. Remove the case cover (if applicable).

3. Gently insert the adapter noting proper key orientation of the expansion connector on a PC/104

compatible card. The adapter is keyed per the current PC/104 Specification. This will aid in

preventing the adapter from being inserted incorrectly.

4. Mounting hardware (nylon stand-offs and screws) is provided to ensure a good mechanical

connection. Retain any mounting hardware not used to allow for future expansion.

5. The cables provided are keyed and can be installed before or after the adapter is inserted in the

stack.

6. Replace the cover.

7. Connect the power cord and power up the machine.

Installation is complete.

Technical Description

The SIO-104+2 series provides the ultimate serial connection for your PC/104 application. SIO-104+2

utilizes the 16850 UART. These chip features programmable baud rates, data format, interrupt control and

128-Byte input and output FIFOs.

The SIO-104+2 when configured with the RS-422/485 interface will allow long length, high-speed

communications suitable for data collection and shop floor control.

The SIO-104+2 when configured with the RS-232C interface, is fully compatible with the DOS operating

system, all popular modem software, network operating systems software, and mouse drivers.

Features

•Selectable interrupts (IRQs) 3, 4, 5, 7, 9, 10, 11, 12, 15

•Multiple adapters can share the same IRQ

•Uses PC/104 compatible stack through connector for universal mounting

•5 volts only DC operation

Connector Pin Assignments

RS-232

Signal

Name

J1/J2

DB-9

Mode

GND

Ground

Transmit Data

Output

RTS

Request To Send

Output

DTR

Data Terminal Ready

Output

Receive Data

Input

CTS

Clear To Send

Input

DSR

Data Set Ready

Input

Carrier Detect

Input

Ring Indicator

Input

These assignments meet EIA/TIA/ANSI-574 DTE for DB-9 type connectors

Indice

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