SeaLevel VERSA COMM +4 Manual de usuario

VERSA COMM+4™

USER’S MANUAL

Part Number 3410

Sealevel Systems, Inc Phone: (864) 843-4343

155 Technology Place Fax: (864) 843-3067

P.O. Box 830 www.sealevel.com

Liberty, SC 29657

Contents

INTRODUCTION........................................................................ 1

OVERVIEW ...........................................................................................1

WHAT’S INCLUDED .............................................................................1

FACTORY DEFAULT SETTINGS .............................................................1

CARD SETUP............................................................................. 2

ADDRESS SELECTION ...........................................................................2

PORT ENABLE / DISABLE.....................................................................3

IRQ SELECTION...................................................................................3

INTERRUPT MODE OPTIONS.................................................................4

INSTALLATION.......................................................................... 6

OPERATING SYSTEM INSTALLATION....................................................6

For Windows Users.......................................................................6

Other Operating Systems..............................................................6

TECHNICAL DESCRIPTION ....................................................... 7

FEATURES ...........................................................................................7

CONNECTOR PIN ASSIGNMENTS...........................................................8

RS-232...........................................................................................8

SPECIFICATIONS....................................................................... 9

ENVIRONMENTAL SPECIFICATIONS......................................................9

MANUFACTURING...............................................................................9

POWER CONSUMPTION........................................................................9

MEAN TIME BETWEEN FAILURES (MTBF)..........................................9

PHYSICAL DIMENSIONS.......................................................................9

APPENDIX A -TROUBLESHOOTING....................................... 10

APPENDIX B -HOW TO GET ASSISTANCE............................. 12

APPENDIX C -ELECTRICAL INTERFACE................................ 13

RS-232............................................................................................13

APPENDIX D -ASYNCHRONOUS COMMUNICATIONS ............ 14

APPENDIX E -SILK-SCREEN.................................................. 15

APPENDIX F-SCHEMATIC......................................................16

APPENDIX G -COMPLIANCE NOTICES...................................18

FEDERAL COMMUNICATIONS COMMISSION STATEMENT ..................18

EMC DIRECTIVE STATEMENT...........................................................18

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

Figures

Figure 1 -Address Selection Table..................................................................2

Figure 2 -DIP-Switch Illustration.....................................................................2

Figure 3 -Headers E1, E2, E3, and E4 ............................................................3

Figure 4 -Header E5, Normal IRQ Mode.......................................................4

Figure 5 -Header E5, Shared IRQ Mode .......................................................4

Figure 6 -Header E5, Sharing IRQ’s with another adapter...........................5

Figure 7 -IRQ Headers E1 -E5 (Factory Default).........................................5

Figure 8 -Connector Pin Assignments.............................................................8

Figure 9 -Asynchronous Communications Bit Diagram...............................14

Introduction

Sealevel Systems VERSA COMM+4 Page 1

Introduction

Overview

The Sealevel Systems VERSA COMM+4 provides the PC with four

RS-232 asynchronous ports. The VERSA COMM+4 allows for

connection to any device utilizing the RS-232 electrical interface, such as

modems, data-entry terminals, and plotters.

What’s Included

The VERSA COMM+4 is shipped with the following items. If any of

these items are missing or damaged, contact the supplier.

•VERSA COMM+4 Serial I/O Adapter

•“Spider” Cable providing 4 DB-25 connectors.

•3.5” Serial Utility Diskette

•User Manual

Factory Default Settings

The VERSA COMM+4 factory default settings are as follows:

Port # Base Address IRQ

Port 1 3F8 4

Port 2 2F8 3

Port 3 3E8 4

Port 4 2E8 3

To install the VERSA COMM+4 using factory default settings, refer to

the Installationsection of this manual.

For your reference, record installed VERSA COMM+4 settings below:

Port # Base Address IRQ

Port 1

Port 2

Port 3

Port 4

Card Setup

Sealevel Systems VERSA COMM+4 Page 2

Card Setup

The VERSA COMM+4 contains several jumper straps which must be set

for proper operation.

Address Selection

Each port on the VERSA COMM+4 occupies 8 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. SW4 sets the I/O address for port 1, SW3 sets the

address for port 2, SW2 sets the address for port 3 and SW1 sets the

address for port 4.

Address Binary Switch Position Setting

Hex A9 A0 1234567

280-287 1010000XXX Off On Off On On On On

2A0-2A7 1010100XXX Off On Off On Off On On

2E8-2EF 1011101XXX Off On Off Off Off On Off

2F8-2FF 1011111XXX Off On Off Off Off Off Off

3E8-3EF 1111101XXX Off Off Off Off Off On Off

300-307 1100000XXX Off Off On On On On On

328-32F 1100101XXX Off Off On On Off On Off

3F8-3FF 1111111XXX Off Off Off Off Off Off 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.

1 2 3 4 5 6 7 8

ENA3A9

Figure 2-DIP-Switch Illustration

Note: Setting the switch "On" or "Closed" corresponds to a "0" in the

address, while leaving it "Off" or "Open" corresponds to a "1".

Refer to Appendix A for common address contentions.

Card Setup

Sealevel Systems VERSA COMM+4 Page 3

Port Enable / Disable

Each port on the VERSA COMM+4 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". If any port is disabled,

be sure to disable the interrupt request for that port by removing the IRQ

jumper.

IRQ Selection

Headers E1, E2, E3 and E4 select the IRQ for each serial port.If COM1:

is selected, this jumper must be on the IRQ4 setting. If COM2: is

selected, this jumper must be on IRQ3.

E3 - Port2

E4 - Port1

E2 - Port3

E1 - Port4

Figure 3-Headers E1, E2, E3, and E4 (Factory Default)

Note: Most communications software applications default COM3: to

IRQ4 and COM4: to IRQ3. This requires the sharing of interrupts

between COM1: and COM3:, and between COM2: and COM4:.

While this is the default, it is not always the preferred setting.

Check your software configuration instructions to determine the

most appropriate IRQ selection.

Card Setup

Sealevel Systems VERSA COMM+4 Page 4

Interrupt Mode Options

Header E5 selects the interrupt mode for each port.Each port must be set

in the correct mode to insure proper installation.

"N" indicates the (N)ormal, single interrupt per port mode. "S" Indicates

the (S)hared interrupt mode, which allows more than one port to access a

single IRQ. Any two or more ports can share a common IRQ by placing

the jumpers on the same IRQ setting, and setting the appropriate

selections at E5. Consult your particular software for IRQ selection. If no

interrupt is desired, remove the jumper. "M" indicates the inclusion of a

1K ohm pull-down resistor required on one port when sharing interrupts.

Figure 4-Header E5, Normal IRQ Mode

Set jumpers to "S" for shared interrupt mode on all blocks sharing an IRQ

except one. Set that port block for "M". This provides the pull-down

resistor circuit that makes sharing of IRQs possible. If you are using more

than one VERSA COMM+4 or a compatible card in a bus you should only

have one port set to "M". The following example shows all four ports

sharing a single IRQ.

1 2

Figure 5-Header E5, Shared IRQ Mode

Card Setup

Sealevel Systems VERSA COMM+4 Page 5

Set jumper to "S" if you are using more than one VERSA COMM+4 in a

bus or you wish to completely remove the pull-down resistor for hardware

compatibility. Setting the board in this configuration when it is not

accompanied by a pull-down resistor will prevent the ports from triggering

an interrupt..

Figure 6-Header E5, Sharing IRQ’s with another adapter

2 3 4 5 7 10 11 12 15

E3 - Port2

E4 - Port1

E2 - Port3

E1 - Port4

2 3 4 5 7 10 11 12 15

1 2

3 4

Figure 7-IRQ Headers E1 -E5 (Factory Default)

The above example shows the correlation between jumper block E5 and

the interrupt jumpers (E1-E4). This example shows the

VERSACOMM+4 shipping configuration with COM1: & COM3: sharing

interrupt 4 and COM2: & COM4: sharing interrupt 3.

Installation

Sealevel Systems VERSA COMM+4 Page 6

Installation

The VERSA COMM+4 can be installed in any of the PC expansion slots,

but to access the “AT” or (E)ISA IRQ’s (10, 11, 12, 15) it must be

installed in one of the 16 bit slots. The VERSA COMM+4 contains

several jumper straps for each port which must be set for proper operation

prior to installing the card into the computer.

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

2. Remove the PC case cover.

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

4. Gently insert the VERSA COMM+4 into the slot. Make sure that the

adapter is seated properly.

5. Replace the screw.

6. Install the “Spider” Cable

7. Replace the cover.

8. Connect the power cord.

Installation is complete.

Operating System Installation

For Windows Users

Start by choosing Install Software at the beginning of the CD.

Choose Asynchronous COM: Port Software, SeaCOM.

Other Operating Systems

Refer to the appropriate section of the Serial Utilities Software.

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