SeaLevel SIO-104 User manual

SIO-104

User Manual | 3551

Contents

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

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

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

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

SOFTWARE INSTALLATION ................................................................................................................................9

PHYSICAL INSTALLATION................................................................................................................................10

TECHNICAL DESCRIPTION ...............................................................................................................................11

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

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

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

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

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

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

WARRANTY ........................................................................................................................................................18

................................................................................................................................................................................

Introduction

The SIO-104 is the ultimate single port RS-232 serial connection for your PC/104 application. The SIO-104

utilizes the Exar 16C850, which provides 128-byte, transmit and receive FIFOs. These larger buffers allow

error free operation even in high-speed applications.

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.

•(1) SIO-104 Serial Interface Adapter

•(1) 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

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

SIO-104. All items can be purchased from our website (www.sealevel.com) or by calling our sales team

at 864-843-4343.

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

the Sealevel Systems’ DB9 standard for RS-422/485.

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”.

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)

Clock Modes

The ULTRA 530.PCI employs a unique clocking option that allows the end user to select from divide by 4

and divide by 1 clocking modes. These modes are selected at Header E8.

To select the Baud rates commonly associated with COM: ports (i.e. 2400, 4800, 9600, 19.2, … 115.2K Bps)

place the jumper in the divide by 4 mode (silk-screen DIV4).

Figure 4 - Clocking Mode 'Divide by 4'

To select the maximum data rate (460.8K bps) place the jumper in the divide by 1 (silk-screen DIV1)

position.

Figure 5 - Clocking Mode 'Divide By 1'

DIV1

DIV4

DIV1

DIV4

Baud Rates and Divisors for the ‘Div1’ mode

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

using the adapter in the ‘Div1’ mode.

For this Data Rate

Choose this Data Rate

1200 bps

300 bps

2400 bps

600 bps

4800 bps

1200 bps

9600 bps

2400 bps

19.2K bps

4800 bps

57.6 K bps

14.4K bps

115.2 K bps

28.8K bps

230.4K bps

57.6 K bps

460.8K bps

115.2 K 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

384

2400 bps

192

4800 bps

9600 bps

19.2K bps

38.4K bps

57.6K bps

115.2K bps

230.4K bps

460.8K bps

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 website -

SeaCOM software.

2. Select the “SeaCOM for Windows” download link.

3. 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 3551 to your system. Refer to the Hardware

Installation section for details.

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/3551mode.

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 SIO-104 to avoid causing damage to the connectors.

After the adapter is installed, connect your I/O cable to J1. 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.

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 case cover (if applicable).

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

connector on a PC/104 compatible card. The SIO-104 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.

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