Impulse 7804e User Manual

Sealevel Systems, Inc.

Sealevel.com

Phone 864.843.4343

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

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

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

CARD SETUP .................................................................................................. 6

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

Option 1: Using the setserial command line utility. ................................................. 15

Option 2: Modify 8250 driver to include Sealevel Product/Vendor IDs. ................. 16

TECHNICAL DESCRIPTION ................................................................................ 18

SPECIFICATIONS ............................................................................................ 21

APPENDIX A - TROUBLESHOOTING ...................................................................... 22

APPENDIX B - HANDLING INSTRUCTIONS .............................................................. 23

Electrostatic Discharges (ESD) ..................................................................................... 23

APPENDIX C - ELECTRICAL INTERFACE ................................................................. 24

APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ................................................. 26

APPENDIX E – MECHANICAL DRAWING ................................................................. 27

WARRANTY .................................................................................................. 28

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

The Sealevel Ultra COMM+8.PCIe is an eight channel RS-232/485/422 PCI express Bus serial I/O adapter supporting data rates up to 921.6Kbps.

The RS-232 compatibility allows for connection to devices utilizing the RS-232 electrical interface, such as modems, data-entry terminals, and plotters.

RS-422 provides excellent communications for long distance device connections up to 4000ft., where noise immunity and high data integrity are essential.

RS-485 is optimized for „Multi-Drop‟ or „Party-line‟ operations selecting data from multiple peripherals (as many as 31 devices can be connected on an RS-485 bus).

In both RS-485 and RS-422 modes, the card works seamlessly with the standard operating system serial driver. In RS-485 mode, our special auto-enable feature allows the RS-485 ports to be viewed by the operating system as a COM: port. This allows the standard COM: driver to be utilized for RS-485 communications. Our on-board hardware automatically handles the RS-485 driver enable.

The Ultra COMM+8.PCIe will operate on x1, x4, x8 or x16 PCIe bus slots.

 Each port individually configurable for RS-232, RS-422, or RS-485  16C954 buffered UARTs with 128-byte FIFOs  Oscillator and clock prescalar support wide range of baud rates  Supports 9-bit protocol framing  Each port supports data rates to 921.6K bps  RS-485 line termination, pull-up and pull-down resistors for each port are selectable via

dipswitch

 RS-485 ECHO can be enabled/disabled via

dipswitch

 PCI Express X1 compliant  Compatible with all standard size PCI Express

slots

 All modem control signals implemented in RS-

232 mode

 Automatic RS-485 enable/disable in hardware  Included 36" cable terminates to eight DB9M connectors (Item# CA145)

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

The Ultra COMM=8.PCIe is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement.

 Ultra COMM+8.PCIe Serial I/O Adapter  CA145  Sealevel Software CD

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.

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

DB9 to DB25 Serial Cable (Item# CA176)

DB9 Female (RS-422) to DB25 Male (RS-530) Cable, 10 in Length

DB78 Extension Cable (Item# CA233)

DB78 Male to DB78 Female, 72 in Length - Extension Cable

Terminal Block Kit (Item# KT106)

Terminal Block Kit - TB06 + (2) CA127 Cables

Terminal Block Kit (Item# KT105)

Terminal Block Kit - TB05 + CA127 Cable

Terminal Block Kit (Item# TB34-8)

Terminal Block Kit (8 Pack) - DB9 Female to 5 Screw Terminals (RS-422/485)

Depending upon your application, you are likely to find one or more of the following items useful with the Ultra COMM+8.PCIe. All items can be purchased from our website (www.sealevel.com) by calling our sales team at (864) 843-4343.

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

For This Data Rate

CPR

Choose This Divisor

DLM:DLL

1200 bps

3254

2400 bps

1627

4800 bps

813

9600 bps

406

19.2K bps

203

38.4K bps

102

57.6K bps

115.2K bps

230.4K bps

460.8K bps

921.6K bps

The Ultra COMM+8.PCIe is automatically assigned I/O addresses and IRQs by your motherboard BIOS or by a „Plug-n-Play‟ Operating System. Adding or removing other hardware or moving the adapter to another slot may change the assignment of I/O addresses and IRQs.

The Ultra COMM+8.PCIe derives a 62.5MHz clock from the PCI express link which is divided by a 8 bit clock prescaler and a 16 bit clock divisor to provide a wide range of possible baud rates.

The following table shows some common data rates and the rates you should choose to achieve them when using the ULTRA COMM+8.PCI

©Sealevel Systems, Inc. SL9219 - 06/2011

7804e Manual

Switch 1 (Silk M1)

Switch 2 (Silk M0)

Mode Select

OFF

232

OFF

422

OFF

485 With Echo

485 No Echo

Switch

Name

Function

Adds or removes the 120 ohm termination.

Adds or removes the 1K ohm pull-up resistor in the RS-422/RS-485 receiver circuit

Adds or removes the 1K ohm pull-down resistor in the RS-422/RS-485 receiver circuit

Connects the TX- to RX- for RS-485 two-wire operation.

Connects the TX+ to RX+ for RS-485 two-wire operation.

Each of the eight ports on the ULTRACOMM+8.PCI can be individually configured as an RS-232, RS-422, or RS-485 interface. This is selectable via the port DIP-switch, each is labeled with its port number.

Typically, each end of the RS-485 bus must have line-terminating resistors (RS-422 terminates at the receive end only). A 120-ohm resistor is across each RS-422/485 input in addition to a 1K-ohm pull-up/pull-down combination that biases the receiver inputs. Each switch allows customization of this interface to specific requirements. Each switch position corresponds to a specific portion of the interface. If multiple Ultra COMM+8.PCIe adapters are configured in an RS-485 network, only the boards on each end should have switches T, P & P ON. Refer to the following table for each position‟s operation:

The RS-485 „Echo‟ is the result of connecting the receiver inputs to the transmitter outputs. Every time a character is transmitted; it is also received. This can be beneficial if the software can handle echoing (i.e. using received characters to throttle the transmitter) or it can confuse the system if the software does not. An RS-485 „No Echo‟ option is selected by placing both Mode switches (M0, M1) in the „On‟ position.

7804e Manual

1 2 3 4 5 6 7

Figure 1 - RS-232 Mode

Figure 2 - RS-422 Mode

Figure 3 - RS-485 with 'Echo'

Figure 4 - RS-485 No 'Echo'

7804e Manual

This section contains helpful information pertaining to the installation of supported Sealevel Systems, Inc. software packages. First, the process of acquiring the software is discussed. Next, the installation is detailed in a step-by-step guide for Windows and Linux operating systems.

All Sealevel products are shipped with media containing the installers for each software package available. If the media is otherwise unavailable or if desired, the current versions of Sealevel software packages can be obtained from the Sealevel website (see following instructions). If you already have the Sealevel software, proceed to the Windows or Linux installation section.

 Sealevel software for Windows and Linux operating systems is available at these links:

o Software for Windows o Software for Linux

 Choose the link for the desired software package and click on the „Download File‟ link to

download the current driver.

 Proceed to the Manual Software Installation guide for your operating system.

Do not connect the hardware until the software has been successfully installed.

To install Sealevel software, you must log in as an administrator or have administrator privileges in Windows.

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