SeaLevel SIO-104 User manual

SIO-104

User Manual | 3501, 3500

Contents

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

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

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

SOFTWARE INSTALLATION................................................................................................................................5

CARD SETUP ........................................................................................................................................................6

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

TECHNICAL DESCRIPTION ................................................................................................................................. 9

SPECIFICATIONS ...............................................................................................................................................11

APPENDIX A – TROUBLESHOOTING................................................................................................................12

APPENDIX B – HOW TO GET ASSISTANCE .....................................................................................................13

APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................14

APPENDIX D – PC/104......................................................................................................................................16

APPENDIX E – SILK SCREEN ............................................................................................................................17

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

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

Introduction

Overview

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

available in three different interfaces, RS-422/485, RS-232, and MIDI.

The RS-422/485 model (P/N 3500) provides an interface capable of long length, high speed

communications.

The RS-232 model (P/N 3501) provides a standard RS-232C interface that is fully compatible all popular

modem software, network operating systems software, and mouse drivers.

The MIDI model (P/N 3502) provides an interface suitable for control of musical instruments, MIDI

sequencers and other compatible equipment.

Factory Default Settings

The SIO-104 factory default settings are as follows:

Base

Address

IRQ

Port 1

280

Before You Get Started

What’s Included

The SIO-I04 is shipped with the following items. If any of these items are missing or damaged, contact the

supplier.

•SIO-104 Serial Interface Adapter

•(1) DB-9 cable assembly (P/N 3500, 3501), or (1) MIDI cable assembly (P/N 3502)

•(1) Nylon Mounting Hardware Kit

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.

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 SeaCOM Asynchronous Serial Software

Suite.

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

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

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

4. 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.

5. 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.

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

Other Operating Systems

Refer to the appropriate section of the Serial Utilities Software.

For your reference, record installed SIO-104 settings below:

Base

Address

IRQ

Port 1

For additional software support, 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.

Card Setup

The SIO-104 contains several jumper straps for each port which must be set for proper operation.

Address Selection

The SIO-104 occupies eight consecutive I/O locations. A DIP-switch is used to set the base address for

these locations. Be careful when selecting the base address as some selections conflict with existing

ports. The following table shows several examples that typically do not cause a conflict. SW1 sets the I/O

address for the SIO-104.

Address

Binary

Switch Position Setting

Hex

A9 A0

280-287

1010000XXX

Off

2A0-2A7

1010100XXX

Off

2E8-2EF

1011101XXX

Off

2F8-2FF

1011111XXX

Off

3E8-3EF

1111101XXX

Off

300-307

1100000XXX

Off

328-32F

1100101XXX

Off

3F8-3FF

1111111XXX

Off

Figure 1 - Address Selection Table

The following illustration shows the correlation between the DIP-switch setting and the address bits used

to determine the base address. In the example below, address 300 is selected as a base. Address 300 in

binary is XX11 0000 0XXX where X = a non-selectable address bit.

Figure 2 - DIP-Switch Illustration

Setting the switch “On” or “Closed” corresponds to a “0” in the address, while leaving it “Off” or

“Open” corresponds to a “1”.

1 2 3 4 5 6 7 8

Port Enable / Disable

The port on the SIO-104 can be enabled or disabled with switch position 8 on the DIP-switch. The port is

enabled with the switch “On” or “Closed” and disabled when “Off” or “Open” (refer to Figure 2). If the port

is disabled, be sure to also disable the interrupt request for that port by removing the IRQ jumper at header

J2.

IRQ Selection

The SIO-104 has an interrupt selection jumper which should be set prior to use if an interrupt is required by

your application software. Consult the user manual for the application software being used to determine

the proper setting. Position “R” is provided so that a jumper can be installed that connects a 1K Ohm pull-

down resistor to the output of a high-impedance tri-state driver which carries the IRQ signal. Because the

IRQ line is driven low only by the pull-down resistor, it is possible for two or more boards to share the same

IRQ signal. Position “R” installed is the default setting and should be left as is unless multiple cards are

sharing a single IRQ. If multiple adapters are sharing a single IRQ, then only one adapter should have the

pull-down resistor (position “R” selected) in the circuit.

The IRQ can be set at jumper J2 for IRQ 2/9, 3-5, 7, 10, 11, 12, or 15. In the following example, the IRQ is set

as IRQ4.

Figure 3 - Header J2, IRQ Selection (Factory Default)

RS-485 Mode (RTS Enable)

J4 selects whether the RS-485 driver is enabled by the UART signal Request To Send (RTS) or always

enabled. With the jumper installed, RTS enables the RS-485 driver. Removing the jumper enables the driver

regardless of RTS. The jumper should be installed for a 2/4 wire RS-485 application where the SIO-104 is

acting as a polled node on a multi-drop network. Remove the jumper if you are using a point to point RS-

422 application such as programmable logic controllers (PLCs), etc.

Physical Installation

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

Extreme care should be taken when installing the SIO-104 to avoid causing damage to the connectors.

After the adapter is installed, connect your I/O cables to J1-J4. 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 jumper options before inserting the SIO-104 onto the stack.

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

2. Remove the PC case cover (if applicable).

3. Gently insert the SIO-104 connector P1 noting proper key orientation of the expansion

connector on a PC/104 compatible card. The SIO-104 adapter is keyed per the PC/104

Revision 2.1 Specification. This will aid in preventing the adapter from being inserted

incorrectly.

4. Mounting hardware (nylon stand-offs and screws) is provided to insure 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.

Installation is complete

Technical Description

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

utilizes the 16550 UART. This chip features programmable baud rate, data format, interrupt control and a

16 Byte input and output FIFO.

The SIO-104-422 (P/N 3500) is equipped with the RS-422/485 interface allowing long length, high speed

communications suitable for data collection and shop floor control.

The SIO-104-232 (P/N 3501) provides a standard RS-232C interface that is fully compatible with the DOS

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

The SIO-104-MIDI (P/N 3502) allows the controlling of Keyboards, sound modules, and drum machines

which all can be interconnected and driven by sequencing software. The MIDI specification has been

updated recently to include tape deck control for automated recording and stage & light show control for

real-time theatrical production.

Features

• Selectable interrupts (IRQs) 2/9, 3, 4, 5, 7, 10, 11, 12, 15

• Multiple adapters can share the same IRQ

• 16550 UART standard, 16C650 UART optional

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

• 5 volt DC operation

Modem Control Signal Considerations

Some software packages require the use of the modem handshake signals such as CTS or DCD. Refer to

your application software manual to determine the requirements for modem control signals. If no

requirements are mentioned, a safe configuration is to tie DTR to DSR and DCD, and tie RTS to CTS. This

configuration will typically satisfy the modem control signal requirements for most communications

software.

Connector Pin Assignments

RS-232

Signal

Name

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.

RS-422/485

Signal

Name

Pin #

Mode

GND

Ground

TX +

Transmit Data Positive

Output

TX-

Transmit Data Negative

Output

RTS+

Request to Send Positive

Output

RTS-

Request to Send Negative

Output

RX+

Receive Data Positive

Input

RX-

Receive Data Negative

Input

CTS+

Clear to Send Positive

Input

CTS-

Clear to Send Negative

Input

Please terminate any control signals that are not going to be used. The most common way to do this

is connect RTS to CTS and RI. Also, connect DCD to DTR and DSR. Terminating these pins, if not used,

will help insure you get the best performance from your adapter.

MIDI

Signal

Name

Pin #

Mode

MTX +

Transmit Data +

Output

MTX-

Transmit Data -

Output

GND

Ground

2,6

MRX+

Receive Data +

Input

MRX-

Receive Data -

Input

MIDI Thru +

Output

MIDI Thru -

Output

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