SeaLevel C4-104 Series Manual de usuario

C4-104

User Manual | 3520, 3521, 3522

Contents

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

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

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

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

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

PHYSICAL INSTALLATION................................................................................................................................11

TECHNICAL DESCRIPTION ...............................................................................................................................12

SPECIFICATIONS ...............................................................................................................................................14

APPENDIX A – TROUBLESHOOTING................................................................................................................15

APPENDIX B – HOW TO GET ASSISTANCE .....................................................................................................16

APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................17

APPENDIX D – PC/104......................................................................................................................................19

APPENDIX E – SILK SCREEN ............................................................................................................................20

APPENDIX F – COMPLIANCE NOTICES...........................................................................................................21

WARRANTY ........................................................................................................................................................22

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.

Factory Default Settings

The C4-104 factory default settings are as follows:

Base Address

IRQ

Port 1

280

Port 2

288

Port 3

290

Port 4

298

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

Base Address

IRQ

Port 1

Port 2

Port 3

Port 4

Before You Get Started

What’s Included

The C4-104 is shipped with the following items. If any of these items are missing or damaged, contact the

supplier.

• (1) C4-104 Serial Interface Adapter

• (4) DB-9 Cable Assemblies

• (1) Nylon 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.

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

Port2

Port3

Port4

SW1

3F8

2F8

3E8

2E8

2F8

3E8

2E8

2E0

Off

3E8

2E8

280

288

Off

280

288

290

298

Off

2A0

2A8

2B0

2B8

Off

500

508

510

518

Off

580

588

590

598

Off

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.

Port #

Connector Location

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

4 5

10 11

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.

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.

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.

1 2 3 4

E7-1

Port 1 RS-485 Enable

E7-2

Port 1 RS-485 Echo Disable

E7-3

Port 2 RS-485 Enable

E7-4

Port 2 RS-485 Echo Disable

E8-1

Port 3 RS-485 Enable

E8-2

Port 3 RS-485 Echo Disable

E8-3

Port 4 RS-485 Enable

E8-4

Port 4 RS-485 Echo Disable

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

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

U2 & U5 Installed

U1 & U6 Removed

E6 jumpers Removed

E5 jumpers Installed

Ports 1 & 2 RS-422

Ports 3 & 4 RS-232

U1 & U6 Installed

U2 & U5 Removed

E6 jumpers Installed

E5 jumpers Removed

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.

Linux

Refer to the Linux.serial.readme file found in the Sealevel Systems Linux SeaCOM software. This file

contains valuable information on installing your adapter in the various Linux releases. Also in this sub-

directory is the Linux SerialHOWTO. This series of files explains typical Linux serial implementations, as

well as informing the user to Linux syntax and preferred practices.

QNX

Refer to the QNX6\Install.readme file in Sealevel System’s SeaCOM software. This file contains valuable

information on installing your adapter in the QNX6 Neutrino OS, as well as the files required to ensure a

flawless implementation. Also provided are implementation instructions for QNX4. These are found in in

a file called - QNX4\QNX_COM.txt.

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.

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