SeaLevel ULTRA COMM+2i.PCIe User manual

ULTRA COMM+2i.PCIe

User Manual | 7203e

Contents

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

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

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

CARD SETUP ........................................................................................................................................................7

INSTALLATION ..................................................................................................................................................10

HARDWARE INSTALLATION .............................................................................................................................11

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

TECHNICAL SPECIFICATIONS..........................................................................................................................13

APPENDIX A – TROUBLESHOOTING................................................................................................................14

APPENDIX B – SAFETY INSTRUCTIONS..........................................................................................................17

APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................18

APPENDIX D – ASYNCHRONOUS COMMUNICATIONS ..................................................................................19

APPENDIX E – GROUND LOOP PHENOMENON ..............................................................................................20

APPENDIX F – MECHANICAL DRAWING .........................................................................................................21

APPENDIX G – COMPLIANCE NOTICES ..........................................................................................................22

WARRANTY ........................................................................................................................................................23

Introduction

Overview

The Sealevel Systems UltraCOMM+2i.PCIe is a two channel isolated PCIe Bus serial I/O adapter for the PC

and compatibles. Utilizing the PLX OXPCIE952 with its industry leading16C950 based 128 byte FIFOs, it

provides two field selectable RS232/422/485 serial ports supporting data rates up to 460.8K bps (RS-

422/485).

Configure both ports as RS232 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 a RS485 multidrop 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. Optional Terminal Block

adapters are available to simplify field-wiring connections.

In both RS-232 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 UltraCOMM+2i.PCIe will operate on x1, x4, x8 or x16 PCIe bus slots.

Features

•Each port individually configurable for RS-232, RS-422, or RS-485

•Isolation provides protection against transients and ground loops

oOptically isolated serial ports

oGalvanically isolated power to the transceiver

•16C950 based buffered UARTs with 128-byte FIFOs

•Data rates to 460.8K bps

•Automatic RS-485 enable/disable

•The PCIE adapter includes two DB9M connectors

Factory Default Settings

The UltraCOMM+2i.PCIe factory default settings are as follows:

Port # Electrical Specification

Port 1 RS-422

Port 2 RS-422

To install the UltraCOMM+2i.PCIe using factory default settings, refer to the Installation section of the

manual.

Before You Get Started

What’s Included

The UltraCOMM+2i.PCIe is shipped with the following items. If any of these items are missing or

damaged, please contact Sealevel for replacement.

•UltraCOMM+2i.PCIe Isolated Serial Interface

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.

Optional Items

Depending upon your application, you are likely to find one or more of the following items useful with the

7203e. All items can be purchased from our website (www.sealevel.com)by calling our sales team at (864)

843-4343.

DB9 Female to DB9 Male Extension Cable, 72 inch Length (Item# CA127)

The CA127 is a standard DB9F to DB9M serial extension cable.

Extend a DB9 cable or locate a piece of hardware where it is

needed with this six foot (72) cable. The connectors are pinned

one-to-one, so the cable is compatible with any device or cable

with D

B9 connectors. The cable is fully shielded against

interference and the connectors are molded to provide strain

relief. Dual metal thumbscrews secure the cable connections

and prevent accidental disconnection.

9 Female to DB25 Male Standard RS-232 Modem Cable, 72 inch Length (Item# CA177)

The CA177 is a standard AT-style RS-232 modem cable with a

DB9 female connector on one end and a DB25 male connector

on the other end. Simply connect the DB-9F connector to the

DB9 serial port on your computer or host, and then connect the

DB-25M connector to your RS-

232 serial modem or other

compatible RS-232 serial device. The six foot cable is fully

shielded with dual thumbscrews at each connector. The

molded connectors integrate strain relief to prevent damage to

the cable or connectors. All DB9 modem control signals are

implemented, and the cable is pinned to EIA-232 standards.

DB9 Female to DB9 Female, 72 inchLength - RS-422 207M SMPTE Cable (Item# CA190)

The CA190 connects any Sealevel DB9 RS-422 device to a Sony

(or compatible) 207M (SMPTE) 9 Pin connector.

DB9 Female (RS-422) to DB25 Male (RS-530) Cable, 10 inch Length (Item# CA176)

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

Length. Convert any Sealevel RS-422 DB9 Male Async Adapter

to an RS-530 DB25 Male pinout. Useful in situations where RS-

530 cabling exists, and a multiport Sealevel RS-422 adapter is

to be used.

Terminal Blocks

DB9 Female to 9 Screw Terminal Block (Item# TB05)

The TB05 terminal block breaks out a DB9 connector to 9 screw

terminals to simplify field wiring of serial connections. It is ideal

for RS-422 and RS-485 networks, yet it will work with any DB9

serial connection, including RS-232. The TB05 includes holes

for board or panel mounting. The TB05 is designed to connect

directly to Sealevel DB9 serial cards or any cable with a DB9M

connector.

al DB9 Female to 18 Screw Terminal Block (Item# TB06)

The TB05 terminal block breaks out a DB9 connector to 9 screw

terminals to simplify field wiring of serial connections. It is ideal

for RS-422 and RS-485 networks, yet it will work with any DB9

serial connection, including RS-232. The TB05 includes holes

for board or panel mounting. The TB05 is designed to connect

directly to Sealevel DB9 serial cards or any cable with a DB9M

connector.

DB9 Female to 5 Screw Terminal Block (RS-422/485) (Item# TB34)

The TB34 terminal block adapter offers a simple solution for

connecting RS-422 and RS-485 field wiring to a serial port. The

terminal block is compatible with 2-wire and 4-wire RS-485

networks and matches the RS-422/485 pin-out on Sealevel

serial devices with DB9 male connectors. A pair of

thumbscrews secures the adapter to the serial port and

prevents accidental disconnection. The TB34 is compact and

allows multiple adapters to be used on multi-port serial devices,

such as Sealevel USB serial adapters, Ethernet serial servers

and other Sealevel serial devices with two or more ports.

Card Setup

Address and IRQ Selection

The UltraCOMM+2i.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.

Clock Modes

The Ultra COMM+4.PCIe derives a 62.5MHz clock from the PCI express link which is divided by an 8 bit

clock prescalar 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. Prescalar=1 and Divisor = 8, Prescalar =2 and

Divisor = 4, or Prescalar=8 and Divisor = 1). As long as the calculated data rate is within +/- 2% you should

communicate fine.

Baud Rates

The following table shows some common data rates and the rates you should choose to achieve them

when using the ULTRA COMM+4.PCIe.

For This Data Rate Clock Prescalar Choose This Divisor DLM:DLL

1200 bps 3.625 898

2400 bps 3.625 449

4800 bps 1.875 434

9600 bps 1.875 217

19.2K bps 1.375 148

38.4K bps 1.375 74

57.6K bps 22.625 3

115.2K bps 1 34

230.4K bps 1 17

460.8K bps 2.125 4

921.6K bps 2.125 2

Electrical Interface Selection

Each port on the UltraCOMM+2i.PCIe has the ability to be used as RS-232, RS-422 or RS-485. This is

selectable via two DIP-switches, SW1 & SW2. Please use the following examples to configure your adapter.

Line Termination

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. Switches SW1 and SW2 allow the user to customize this

interface to their specific requirements. Each switch position corresponds to a specific portion of the

interface. If multiple UltraCOMM+2i.PCIe adapters are configured in a RS-485 network, only the boards on

each end should have jumpers T, P & P ON. Refer to the following table for each position’s operation:

1 2 3 4 5 6 7

OFF

8910

1 2 3 T P P L L E

RS-232

1234567

OFF

8910

1 2 3 T P P L L E

RS-422

1234567

OFF

8910

1 2 3 T P P L L E

4-Wire

RS-485

W/Echo

1234567

OFF

8910

1 2 3 T P P L L E

2-Wire

RS-485

W/Echo

1 2 3 4 5 6 7

OFF

8 9 10

1 2 3 T P P L L E

2-Wire

RS-485

NO Echo

Name Function

T Adds or removes the 120 ohm termination.

PU Adds or removes the 1K ohm pull-down resistor in the RS-422/RS-

485 receiver circuit (Receive data only).

PD Adds or removes the 1K ohm pull-up resistor in the RS-422/RS-

485 receiver circuit (Receive data only).

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

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

RS-485 Enable Modes

RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri-state driver that will allow the

electrical presence of the driver to be removed from the line. The driver is in a tri-state or high impedance

condition when this occurs. Only one driver may be active at a time and the other driver(s) must be tri-

stated. The output modem control signal Request To Send (RTS) is typically used to control the state of the

driver. Some communication software packages refer to RS-485 as RTS enable or RTS block mode transfer.

One of the features of the 7203e is the ability to effectively use the UltraCOMM+2i.PCIe in an RS-485

application with existing (i.e., standard RS-232) application software.

Jumpers J3 and J4 are used to control the RS-485 mode functions for the driver circuit. Placing a .100” 2

position shunt on pins 1 and 2 allows the RTS modem control signal to enable the RS-485 interface and

provides backward compatibility with existing software products. Placing a .100” 2 position shunt (jumper)

on pins 2 and 3 selects the ‘Auto’ enable feature. The Auto enable feature automatically enables/disables

the RS-485 interface.

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.

Position 9 of SW1 and SW2 is used to control the RS-485 enable/disable functions for the receiver circuit.

To select the ‘No Echo’ mode place switch position 9 to the ‘On’ position.

Installation

Software Installation

Windows Installation

Do not install the hardware 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 correct software from the Sealevel software

driver database.

2. Type in or select the part number (#7203e) for the adapter from the listing.

3. Select “Download Now” for SeaCOM for Windows.

4. The setup files will automatically detect the operating environment and install the proper

components. Follow the information presented on the screens that follow.

5. 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.

6. 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.

7. The software is now installed, and you can proceed with the hardware installation.

8. Refer to the Physical Installation section to connect and install your adapter.

All Sealevel Systems software drivers have been fully tested by Sealevel. Clicking ‘OK’ will not

harm your system.

This is a notification that if you are upgrading from a previous driver version, you should remove

the associated Device Manager hardware entries and reinstall the adapter after the installing the

SeaCOM software.

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