SeaLevel C4-104 Series Bedienungsanleitung

C4-104

USER MANUAL

Part # 3520, 3521, 3522

Sealevel Systems, Inc

155 Technology Place

P.O. Box 830

Liberty, SC 29657 USA

Phone: (864) 843-4343

FAX: (864) 843-3067

www.sealevel.com

Contents

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

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

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

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

OPERATING SYSTEM INSTALLATION ....................................................1

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

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

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

RS-485 MODE (RTS ENABLE)...........................................................4

INTERFACE SELECTION.........................................................................5

RS-232...............................................................................................5

RS-422/485.......................................................................................5

COMBINED RS-232 & RS-422/485..................................................5

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

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

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

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

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

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

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

CONNECTOR PIN ASSIGNMENTS ...........................................................7

RS-232 (Male DB9)......................................................................7

RS-422/485....................................................................................8

STATUS PORT......................................................................................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............................. 11

APPENDIX C -ELECTRICAL INTERFACE................................ 12

RS-232.............................................................................................12

RS-422.............................................................................................12

RS-485.............................................................................................13

APPENDIX D -PC/104............................................................ 14

WHAT IS PC/104?............................................................................14

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

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

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

Figures

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

Figure 2 -Port to Connector Table..................................................................3

Figure 3 -Headers E1, E2, E3, & E4 -IRQ Selection....................................3

Figure 4 -Headers E7 and E8 -RS-485 Enable and Echo Selection.............4

Figure 5 -RS-232 Connector Pin Assignments...............................................7

Figure 6 -RS-422/485 Connector Assignments..............................................8

Introduction

Sealevel Systems C4-104 Page 1

Introduction

Overview

The Sealevel Systems C4-104 series provides four selectable RS-232 or RS-

422/485 serial I/O ports for your PC/104 application.

What’s Included

The C4-104 is shipped with the following items. If any of these items is

missing or damaged, contact the supplier.

•(1) C4-104 Serial Interface Adapter

•(4) DB-9 Cable Assemblies

•(1) Nylon Hardware Kit

•Serial Utility Software

•User Manual

Factory Default Settings

The C4-104 factory default settings are as follows:

Base Address IRQ

Port 1 280 5

Port 2 288 5

Port 3 290 5

Port 4 298 5

To install the C4-104 using factory default settings, refer to Installation

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.

System Installation on page 6.

For your reference, record installed C4-104 settings below:

Base Address IRQ

Port 1

Port 2

Port 3

Port 4

Card Setup

Sealevel Systems C4-104 Page 2

Card Setup

The C4-104 contains several jumper straps for each port that must be set for

proper operation. Address Selection

The C4-104 occupies four port addresses with each port occupying 8

consecutive I/O locations. A DIP switch (SW1) is used to set the port address

options for the C4-104. Be careful when selecting the port addresses as some

selections may conflict with existing ports. The following table shows the

addressing options available with the standard PAL. If you do not see an address

option that suits your needs, please contact Sealevel Systems Technical

Support about a custom PAL option.

Port1

J1 Port2

J2 Port3

J3 Port4

J4 SW1

1SW1

2SW1

3SW1

3F8 2F8 3E8 2E8 On On On On

2F8 3E8 2E8 2E0 On On On Off

3E8 2E8 280 288 On On Off On

280 288 290 298 On On Off Off

2A0 2A8 2B0 2B8 On Off On On

500 508 510 518 On Off On Off

580 588 590 598 On Off Off On

Figure 1-Address Selection Table

DOS Note: Typically COM1: through COM4: addresses are 3F8, 2F8, 3E8

& 2E8 Hex (this is the first addressing option in the above

table). If a COM1: is already present use the second addressing

option, this will provide the typical addresses for COM2:

through COM4: and a fourth port address at 2E0 Hex

XENIX Note: If COM1: is not installed, use base address 500 Hex and IRQ 4

for COM1:. If COM1: is installed, then select base address 580

Hex and IRQ3 (XENIX COM2:)

Card Setup

Sealevel Systems C4-104 Page 3

Port # Connector Location

1J2

2J3

3J4

4J5

Figure 2-Port to Connector Table

IRQ Selection

Headers E1-E4 select the Interrupt Request (IRQ) for each serial port. E1

selects the IRQ selection for Port 1, E2 for Port 2, E3 for Port 3, and E4 for

Port 4. If COM1: is selected, this jumper must be on the IRQ4 setting. If

COM2: is selected, this jumper must be on IRQ3. Consult your particular

software for IRQ selection. If no interrupt is desired, remove the jumper.

E1 E2 E3 E4

2/9

Figure 3-Headers E1, E2, E3, & E4 -IRQ Selection

Position “R” is provided so that you can install a jumper that connects a 1K

ohm pull-down resistor to the output of a high-impedance tri-state driver that

carries the IRQ signal. Because the IRQ line is driven low only by the pull-

down resistor you can have two or more boards which share the same IRQ

signal. Position “R” installed is the default setting and should be left on unless

multiple ports or cards are sharing a single IRQ. If multiple ports or cards are

sharing a single IRQ then only one pull-down resistor is needed in the circuit.

Card Setup

Sealevel Systems C4-104 Page 4

RS-485 Mode (RTS Enable)

E7 & E8 select 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 C4-104 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 (PLC's), etc. Half-duplex two-wire operation

is also possible by connecting TX+ to RX+ and TX-to RX-in your cable hood.

To enable the driver with RTS install jumpers at E7-1 for Port 1, E7-3 for Port

2, E8-1 for Port 3 and E8-3 for Port 4. Failure to correctly set this jumper can

cause transmitter contention problems preventing operation by any nodes on

the network.

Note: By connecting the TX+ to the RX+ and TX-to RX-you will experience a

condition termed RS-485 “Echo”. This means that when you transmit a

data character it will be “Echoed” back through the receiver circuit,

presenting itself as a received data character. This can be useful in RS-

485 communications by providing a benchmark for the end of

transmission (i.e. when the amount of received data available equals the

transmit data count). The RS-485 “Echo” can be disabled at E7 and E8.

To disable the echo install a jumper at E7-2 for Port 1, E7-4 for Port 2,

E8-2 for Port 3 and E8-4 for Port 4.

The following example shows the drivers in the RS-485 mode and the echo

enabled.

2 3 4

E7-1Port 1 RS-485 Enable

E7-2Port 1 RS-485 Echo Disable

E7-3Port 2 RS-485 Enable

E7-4Port 2 RS-485 Echo Disable

E8-1Port 3 RS-485 Enable

E8-2Port 3 RS-485 Echo Disable

E8-3Port 4 RS-485 Enable

E8-4Port 4 RS-485 Echo Disable

Figure 4-Headers E7 and E8 -RS-485 Enable and Echo Selection

Card Setup

Sealevel Systems C4-104 Page 5

Interface Selection

Due to the versatility of the C4-104, a wide range of interface configuration

options is available to the end user. Please use this section as a guide in

configuring your board to provide the interface you require.

RS-232

1. Remove the 75174 drivers at U1 & U5.

2. Install MAX204 drivers at U2 & U6.

3. Remove all jumpers at E5 and E6.

RS-422/485

1. Install the 75174 drivers at U1 & U5.

2. Remove MAX204 drivers at U2 & U6.

3. Install all jumpers at E5 and E6.

Combined RS-232 & RS-422/485

Please use the following table as a guide in configuring the C4-104 in this

manner.

Configuration Drivers Headers E5 and E6

Ports 1 & 2 RS-232

Ports 3 & 4 RS-422 U1 & U6 Installed

U2 & U5 Removed E6 jumpers Removed

E5 jumpers Installed

Ports 1 & 2 RS-422

Ports 3 & 4 RS-232 U2 & U6 Installed

U1 & U5 Removed E6 jumpers Installed

E5 jumpers Removed

Technical Description

Sealevel Systems C4-104 Page 6

Installation

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.

System Installation

Extreme care should be taken when installing the C4-104 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 C4-104 onto the stack.

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

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

3. Gently insert the C4-104 connector P1 noting proper key orientation of the

expansion connector on a PC/104 compatible card. The C4-104 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

Sealevel Systems C4-104 Page 7

Technical Description

The C4-104 provides four RS-232 or RS-422/485 serial ports, utilizing a

16554 UART. This chip features programmable baud rates, data format,

interrupt control and a 16-byte input and output FIFO. This UART is essentially

four 16550 compatible UARTs in a 68 pin PLCC package.

Features

•PC/104 compatible “Stack Through” connector for universal mounting.

•5 volt DC operation.

•DB-9P interface cables provided for ease in connecting.

•All mounting hardware provided.

•Supports TD, RD, RTS, CTS signals.

•Compatible with 16550 specific software.

•RS-422 version Part Number: 3520

•RS-232 version Part Number: 3521

•RS-422/232 version Part number: 3522

Connector Pin assignments

RS-232 (Male DB9)

Signal Name Pin #DB9 J1-J4 Mode

GND Ground 5 9

TD Transmit Data 3 5 Output

RTS Request To Send 7 4 Output

RD Receive Data 2 3 Input

CTS Clear To Send 8 6 Input

Figure 5-RS-232 Connector Pin Assignments

Note: These pin assignments meet the EIA/TIA/ANSI-574 DTE for DB-9 type

connectors. These are the only pins that can be connected in your cable

for RS-232. If any other connections are made your data may become

corrupted. If RTS and CTS are not being used terminate them by

connecting the pins together. This will help insure the best performance.

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