SeaLevel 7804e User manual

Sealevel Systems, Inc.
Sealevel.com
Phone [phone]

©Sealevel Systems, Inc.
SL9219 –04/2013
7804e Manual
2
CONTENTS ....................................................................................................2
INTRODUCTION...............................................................................................3
BEFORE YOU GET STARTED ................................................................................4
CARD SETUP ..................................................................................................6
SOFTWARE INSTALLATION ..................................................................................9
TECHNICAL DESCRIPTION ................................................................................14
SPECIFICATIONS ............................................................................................17
APPENDIX A-TROUBLESHOOTING ......................................................................18
APPENDIX B-HANDLING INSTRUCTIONS ..............................................................19
APPENDIX C-ELECTRICAL INTERFACE .................................................................20
APPENDIX D-ASYNCHRONOUS COMMUNICATIONS .................................................22
APPENDIX E–MECHANICAL DRAWING.................................................................23
WARRANTY..................................................................................................24

©Sealevel Systems, Inc.
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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.
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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.
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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 [phone].
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)

©Sealevel Systems, Inc.
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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+4.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.
Note that there are many combinations that can give the same result (e.g. Prescaler=1 and
Divisor = 8, Prescaler =2 and Divisor = 4, or Prescaler=8 and Divisor = 1). As long as the
calculated data rate is within +/- 2% you should communicate fine.
The following table shows some common data rates and the rates you should choose to achieve
them when using the ULTRA COMM+8.PCI
For This Data Rate
Clock Prescaler
Choose This Divisor DLM:DLL
1200 bps
1
3255
2400 bps
1.625
1001
4800 bps
1.750
465
9600 bps
1.875
217
19.2K bps
1.5
136
38.4K bps
1.75
588
57.6K bps
1.825
37
115.2K bps
1.875
18
230.4K bps
1
17
460.8K bps
2.125
4
921.6K bps
2.125
2

©Sealevel Systems, Inc.
SL9219 –04/2013
7804e Manual
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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.
Switch 1 (Silk M1)
Switch 2 (Silk M0)
Mode Select
OFF
OFF
232
OFF
ON
422
ON
OFF
485 With Echo
ON
ON
485 No Echo
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:
Switch
Name
Function
3
T
Adds or removes the 120 ohm termination.
4
PU
Adds or removes the 1K ohm pull-up resistor in the RS-422/RS-485 receiver circuit
5
PD
Adds or removes the 1K ohm pull-down resistor in the RS-422/RS-485 receiver circuit
6
L
Connects the TX- to RX- for RS-485 two-wire operation.
7
L
Connects the TX+ to RX+ for RS-485 two-wire 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.

©Sealevel Systems, Inc.
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Figure 1 - RS-232 Mode
Figure 2 - RS-422 Mode
Figure 3 - RS-485 with 'Echo'
Figure 4 - RS-485 No 'Echo'
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7
ON

©Sealevel Systems, Inc.
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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:
oSoftware for Windows
oSoftware 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.

©Sealevel Systems, Inc.
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1. Insert the Sealevel media into your PC.
2. If the ‘AutoRun’ feature is enabled for this media the software will automatically
launch.
3. Otherwise, navigate to the root directory of the media and double-click the
‘autorun.exe’ application to launch the installation window.
4. Select ‘Install’ as demonstrated in the image below.