Impulse 7106 User Manual

ULTRA 530.LPCI User Manual

Part Number 7106

www.sealevel.com PO Box 830 Liberty, SC 29657 864.843.4343

Table of Contents

INTRODUCTION....................................................................................................................................... 1

OTHER SEALEVEL LOW PROFILE PCI SERIAL I/O PRODUCTS ...................................................... 1

BEFORE YOU GET STARTED ............................................................................................................... 2

WHAT’S INCLUDED ...................................................................................................................... 2

OPTIONAL ITEMS.......................................................................................................................... 2

CARD SETUP ............................................................................................................................................. 3

RS-485 ENABLE MODES.............................................................................................................. 3

RS-485 MODE EXAMPLES (HEADER E5) ..................................................................................... 4

ADDRESS AND IRQ SELECTION.................................................................................................... 5

LINE TERMINATION...................................................................................................................... 5

ELECTRICAL INTERFACE SELECTION............................................................................................ 6

CLOCK MODES............................................................................................................................. 7

BAUD RATES AND DIVISORS FOR THE ‘DIV1’ MODE .................................................................... 8

ISOCHRONOUS CLOCKING JUMPERS ............................................................................................. 8

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

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

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

ISOCHRONOUS COMMUNICATIONS ............................................................................................. 12

CONNECTOR PIN ASSIGNMENTS................................................................................................. 12

ELECTRICAL CHARACTERISTICS ..................................................................................................14

FEATURES .................................................................................................................................. 14

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

APPENDIX A - TROUBLESHOOTING ...............................................................................................15

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

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

APPENDIX D – ASYNCHRONOUS COMMUNICATIONS .............................................................. 18

APPENDIX E – SILK SCREEN – 7106 PCB......................................................................................... 19

APPENDIX F - COMPLIANCE NOTICES .......................................................................................... 20

EDERAL COMMUNICATIONS COMMISSION STATEMENT ........................................................... 20

WARRANTY............................................................................................................................................. 21

ULTRA 530.LPCI User Manual

Introduction

The ULTRA 530.LPCI is a one channel PCI Bus serial I/O adapter. It provides one field selectable RS-232/422/485/530 serial port supporting asynchronous data rates up to 921.6K bps as well as isochronous data rates up to the speed of the supplied clock. Now, with this card, you can use your standard communications software and connect over a clocked digital communications line.

Configure the port 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 multi-drop network. Up to 31 RS-485 devices can be connected to each port to automate your data collection.

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 onboard hardware automatically handles the RS-485 driver enable.

The ULTRA 530.LPCI ships with a Low Profile PCI bracket that will only work in a Low Profile PCI slot. If you need a standard size PCI bracket, please order Item# 7106S. The RoHS compliant version of the ULTRA 530.LPCI, part number 7106RoHS, meets the RoHS (2002/95/EC) and WEEE (2002/96/EC) directives.

Other Sealevel Low Profile PCI Serial I/O Products

COMM+850.LPCI (P/N 7104) - Low Profile PCI RS-232 Serial Interface

SIO-485.LPCI (P/N 7107) - Low Profile PCI RS-422, RS-485 Serial

Interface

Ultra COMM+I.LPCI (P/N 7108) - Low Profile PCI RS-232, RS-422, RS-485

Isolated Serial Interface

Ultra COMM+2.LPCI (P/N 7205) - Low Profile PCI RS-232, RS-422, RS-485

Serial Interface

COMM+4.LPCI (P/N 7406) - Low Profile PCI RS-232 Serial Interface

COMM+8.LPCI (P/N 7803) - Low Profile PCI RS-232 Serial Interface

ULTRA 530.LPCI User Manual

Before You Get Started

What’s Included

The ULTRA 530.LPCI is shipped with the following items. If any of these items is missing or damaged please contact Sealevel for replacement.

 ULTRA 530.LPCI Adapter  Sealevel SeaI/O Software CD

Optional Items

Depending upon your application, you are likely to find one or more of the following items useful for interfacing the ULTRA 530.LPCI to real-world signals. All items can be purchased from our website (http://www.sealevel.com calling (864) 843-4343.

 DB25 Female to DB25 Male Extension Cable (Part Number CA104)

− 72” DB25 Female to DB25 Male Extension Cable.

 DB25 Female (RS-530) to DB9 Male (RS-422) Cable (Part Number CA175)

− 10" cable converts any DB25 Male RS-530 Async Adapter to the

Sealevel RS-422 DB9 Male pinout. Useful in situations where cabling is already in place for the Sealevel DB9 implementation of RS-422.

) or by

 DB25 Female to DB37 Male Cable (Part Number CA107)

− 10” DB25 Female (RS-530) to DB37 Male (RS-449 DTE) Cable. RS-

530 was designed to replace the bulky DB37 RS-449 connector. The CA107 cable allows any Sealevel RS-530 adapter to be used in an RS-449 application.

 Terminal Block Kit - (Part Number KT104)

− The TB04-KT ships with a terminal block, a 6" piece of slotted Snap

Track, two DIN-rail mounting clips, and a CA104 cable. The TB04KT terminal block can be used to break out serial and digital DB25 connectors to 25 screw terminals.

ULTRA 530.LPCI User Manual

Card Setup

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 unique features of the ULTRA 530.LPCI is the ability to be RS-485 compatible without the need for special software or drivers. This ability is especially useful in Windows, Windows NT, and OS/2 environments where the lower level I/O control is abstracted from the application program. This ability means that the user can effectively use the ULTRA 530.LPCI in a RS-485 application with existing (i.e. standard RS-232) software drivers.

Header E5 is used to control the RS-485 mode functions for the driver circuit. The selections are:

‘Auto’ enable (silk-screen ‘AT’). The ‘Auto’ enable feature automatically enables/disables the RS-485 interface via on board circuitry.

‘RTS’ enable (silk-screen ‘RT’) The ‘RTS’ mode uses the ‘RTS’ modem control signal to enable the RS-485 interface and provides backward compatibility with existing software products.

‘DTR’ enable (silk-screen ‘DT’) The ‘DTR’ mode uses the ‘DTR’ modem control signal to enable the RS-485 interface, provides backward compatibility with existing software products and with the Oxford Semiconductor 16C950 RS-485 enable feature

‘Output One’ enable (silk-screen ‘OP’) This mode uses the ‘OP1’ control signal to enable the RS-485 interface and provides backward compatibility with existing software products and with the Exar 16C850 RS-485 enable feature

‘No Echo’ (silk-screen ‘NE’) of E5 is used to control the RS-485 enable/disable functions for the receiver circuit and determine the state of the RS-422/485 driver.

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. To select the ‘No Echo’ mode select silk-screen position ‘NE’.

ULTRA 530.LPCI User Manual

RS-485 Mode Examples (Header E5)

Figure 1- Header E5, RS-422

Figure 2 – Header E5, RS-485 ‘Auto’ Enabled, with ‘No Echo’

Figure 3 - Header E5, RS-485 ‘Auto’ Enabled, with ‘Echo’

Figure 4 - Header E5, RS-485 ‘RTS’ Enabled, with ‘No Echo’

Figure 5 – Header E5, RS-485 ‘RTS’ Enabled, with ‘Echo’

ULTRA 530.LPCI User Manual

Figure 6 – Header E5, RS-485 ‘DTR’ Enabled, with No Echo

Address and IRQ selection

The ULTRA 530.LPCI is automatically assigned I/O addresses and IRQs by your motherboard BIOS. Only the I/O address may be modified by the user.

Adding or removing other hardware may change the assignment of I/O addresses and IRQs.

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 data input in addition to a 1K-ohm pull-up/pull-down combination that biases the receiver inputs. Header E4 allows customization of this interface to specific requirements. Each jumper position corresponds to a specific portion of the interface. If multiple ULTRA 530.LPCI adapters are configured in an 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:

Name Function

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

receiver circuit

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

receiver circuit T Adds or removes the 120 ohm termination. L Connects the TX+ to RX+ for RS-485 two-wire operation. L Connects the TX- to RX- for RS-485 two-wire operation.

Figure 7 - Header E4, Line Termination

ULTRA 530.LPCI User Manual

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