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7205e
User Manual
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Impulse 7205e User Manual

COMM+2.LPCIe User Manual
Item Numbers
7205e & 7205eS
www.sealevel.com PO Box 830 – Liberty, SC 29657 864.843.4343

Table of Contents

WHAT’S INCLUDED ...................................................................................................................... 2
PTIONAL ITEMS.......................................................................................................................... 2
O
D
IPSWITCH SETTINGS .................................................................................................................. 3
ELECTRICAL INTERFACE MODES.................................................................................................. 4
TERMINATION & BIASING RESISTORS.......................................................................................... 4
SOFTWARE INSTALLATION ........................................................................................................... 5
HARDWARE INSTALLATION.......................................................................................................... 9
VERIFYING INSTALLATION......................................................................................................... 13
UNINSTALL & UPGRADE INSTRUCTIONS .................................................................................... 14
CONNECTOR PIN ASSIGNMENTS................................................................................................. 19
CABLE PIN ASSIGNMENTS.......................................................................................................... 20
BAUD RATES AND OSCILLATOR VALUE..................................................................................... 21
DIMENSIONS .............................................................................................................................. 22
ENVIRONMENTAL SPECIFICATIONS ............................................................................................ 22
POWER REQUIREMENTS ............................................................................................................. 22
MANUFACTURING ...................................................................................................................... 22
RS-232 ...................................................................................................................................... 27
RS-422 ...................................................................................................................................... 27
RS-485 ...................................................................................................................................... 27
FEDERAL COMMUNICATIONS COMMISSION STATEMENT ........................................................... 30
DIRECTIVE STATEMENT.................................................................................................... 30
EMC
© Sealevel Systems, Inc. SL9203 Revision 12/2008
COMM+2.LPCIe User Manual

Introduction

The Sealevel COMM+2.LPCIe (Item# 7205e) provides a PCI Express 1.0a compliant interface adapter with two asynchronous serial ports for industrial automation and control applications. The serial ports are field selectable for RS-232, RS-422, or RS-485 and support data rates to 921.6K bps.
Configure both ports as RS232 for standard serial COM: port requirements. Choose the RS-422 mode for long distance device connections up to 4000ft. where noise immunity and high data integrity are essential. Select RS-485 and capture data from multiple peripherals in an RS485 multi-drop network. Up to 31 RS-485 devices can be connected to each port to automate your data collection. You can even mix the ports in any of the interface combinations to provide maximum flexibility to your application.
In RS-485 mode, the transmitter is automatically enabled in hardware, eliminating the need for application software control. This allows the 7205e to be used with standard serial communications applications and removes the risk of bus contention and data corruption. In RS-232 mode, all modem control signals are implemented for maximum compatibility with a wide range of serial peripherals. The Sealevel SeaCOM software driver and utilities make installation and operation easy using Windows 98, ME, 2000, NT, XP, Vista and Linux operating systems.
The 7205e ships with a low profile PC bracket for use in systems with a low profile PCI Express slot. If you need a standard size PC bracket, order the 7205eS.

Features

PCI Express two-port serial interface adapter Each port configurable for RS-232, RS-422, or RS-485 High performance 16C950 UART with 128-byte FIFOs Each port supports data rates to 921.6K bps Oscillator and clock prescaler support wide range of baud rates Supports 9-bit protocol framing PCI Express 1.0a compliant via X1 connector Compatible with all low profile and standard size PCI Express slots All modem control signals implemented in RS-232 mode Includes 36” cable that terminates to two DB9M connectors
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual

Before You Get Started

What’s Included

Depending on the PC bracket ordered, the 7205e is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement.
COMM+2.LPCIe – Two-Port RS-232/422/485 Serial Interface
• 7205e – PCI Express Board with Low Profile PC Bracket
• 7205eS – PCI Express Board with Standard Height PC Bracket
CA203 – DB25F to (2) DB9M Cable, 36” in Length Sealevel Software CD – SeaCOM software and user manual

Optional Items

Depending upon your application, you are likely to find one or more of the following items useful with the 2105. All items can be purchased from our website (www.sealevel.com
) by calling our sales team at (864) 843-4343.
Cables
DB9F to DB25M (RS-232) Extension Cable (Item# CA177)
The CA177 is a standard AT-style RS-232 modem cable with a DB9F connector on one end and a DB25M connector on the other. This cable is 72 inches in length.
DB9F to DB9M Extension Cable (Item# CA127)
The CA127 allows users to extend a DB9 cable up to six feet. The connectors are pinned one-to-one so the cable is compatible with any device or cable that has DB9 connectors.
Adapters and Converters
DB9F to RJ45 Modular Adapter (Item# RJ9S8)
The RJ9S8 is a DB9 female to RJ45 adapter. It can be configured without tools and is an excellent choice for using available infrastructure wiring.
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual

Hardware Configuration

There are two sets of 7-position dipswitches on the board that are used to set the electrical interface, termination and biasing. The dipswitch located at ‘SW1’ is labeled ‘PORT 1’ and configures the first serial port. The dipswitch located at ‘SW2’ is labeled ‘PORT 2’ and configures the second serial port. The labels and description of the function for each switch are detailed in the following table.

Dipswitch Settings

Switch Description
M1 Sets the electrical interface mode (with M0) M0 Sets the electrical interface mode (with M1)
T Adds or removes 120 termination PU Adds or removes 1K pull-up resistor in RS-422/485 mode PD Adds or removes 1K pull-down resistor in RS-422/485 mode
L Connects TX– to RX– for RS-485 two-wire operation
L Connects TX+ to RX+ for RS-485 two-wire operation
The location of the dipswitches is outlined in green in the image below. The default configuration settings are shown in drawing.
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual

Electrical Interface Modes

Each port on the 7205e can be individually configured for RS-232, RS-422, or RS­485 mode. The first two switches labeled ‘M1’ and ‘M0’ are used to select the electrical interface. To simplify installation and testing the board is shipped in RS­422 mode. Use the settings in the table below to assist you in configuring the electrical interface.
M1 M0 Interface
OFF OFF RS-232
OFF ON RS-422 [Default]
ON OFF RS-485 ECHO Enabled ON ON RS-485 No ECHO

Termination & Biasing Resistors

Typically, each end of the RS-485 bus must have line terminating resistors enabled (RS-422 should terminate the receive end only). A 120 ohm resistor is across each RS-422/485 input in addition to a 1K ohm pull-up and pull-down combination that biases the receiver inputs. Use the switches detailed in the table below to customize the interface to your specific requirements.
If using the board in an RS-485 two-wire network, enable the two switches labeled ‘L’, which tie the positive/negative transmit/receive pairs together.
Switch Default Description
T ON Adds 120Ω termination, OFF to remove PU ON Adds 1K Ω pull-up resistor in RS-422/485
Off to remove
PD ON Adds 1K Ω pull-down resistor in RS-422/485
OFF to remove L OFF ON to connect TX– to RX– for RS-485 two-wire L OFF ON to connect TX+ to RX+ for RS-485 two-wire
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COMM+2.LPCIe User Manual

Installation & Configuration

Software Installation

Windows 98/ME/2000/XP/Vista™ Operating Systems
Do not install the PCI Express board until the software has been successfully installed.
1. Start Windows.
2. Insert the Sealevel Software CD in to your CD drive.
3. If ‘Auto-Start’ is enabled, the installation window will automatically appear.
Otherwise, navigate to the root directory of your CD drive and double-click the ‘autorun.exe’ application to launch the installation window.
4. Select ‘Install’ to locate the software and manual for your device.
5. Type in the part number for your device (Item# 7205e) or select it from the
list in the drop box.
6. Click the ‘Install Drivers’ button to launch the Installation Wizard.
7. When the ‘SeaCOM - InstallShield Wizard’ window appears, click the
‘Next’ button to initiate the software installation.
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual
Software Installation, continued
8. When the ‘License Agreement’ window appears, accept the terms and click
‘Next’ to continue. You can click the ‘Print’ button to print out a copy of the agreement for your records. If you do not accept the terms of the agreement, the installation will stop.
9. When the ‘Ready to Install the Program’ window appears, click the ‘Install’
button to install the software onto the hard drive of your computer. The files will be automatically installed into the ‘C:\Program Files’ folder on your computer.
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual
Software Installation, continued
10. A dialog box will appear, as shown, with important information. Click the
‘OK’ button to continue.
11. During installation, you may receive a warning dialog stating, “The
publisher cannot be determined due to the problems below: Authenticode signature not found.” Click the ‘Yes’ button to proceed with the installation. This declaration means that SeaCOM has not been certified by Microsoft’s testing labs.
Note: All SeaCOM software and drivers have been fully tested by Sealevel. Clicking ‘Yes’ will not harm your system.
12. If SeaCOM has been previously installed on your computer, you do not need
to install it again. If you are upgrading SeaCOM, you should remove the previous version before installing the latest version. Refer to the ‘Uninstall & Upgrade Instructions’ section of this manual; otherwise, click ‘OK’ to continue.
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COMM+2.LPCIe User Manual
Software Installation, continued
13. The setup file will automatically detect the operating environment and
install the proper components. When the ‘InstallShield Wizard Complete’ window appears, click ‘Finish’ to close the window and complete the software installation.
14. Click the ‘X’ in the top-right corner of the ‘Product Finder’ screen to close
the CD installation window.
15. Proceed with the hardware installation of your PCI Express serial interface
adapter.
Linux Installation
Refer to the subdirectory D:\Software\SeaCOM\Other\Linux\ (replace “D:” with your actual CD drive letter) found on the Sealevel Software CD. This folder contains valuable information on installing your serial adapter in the various Linux releases. Also included is a series of files explaining proper Linux syntax and typical Linux serial implementations.
rd
Party Software Support
3
Third party software support for many HMI/MMI and other process control software is included on the product installation CD. For the most up to date information on third party software support, please visit
www.sealevel.com/thirdpartysoftware.asp
.
© Sealevel Systems, Inc.
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COMM+2.LPCIe User Manual
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