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COMM+4/422.PCIe
User Manual | 7402e and 7402eS
1
© Sealevel Systems, Inc.
7402e Manual | SL9251 11/2022

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Summary of Contents for SeaLevel COMM+4/422.PCIe

  • Page 1 COMM+4/422.PCIe User Manual | 7402e and 7402eS © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 2: Table Of Contents

    APPENDIX B – HANDLING INSTRUCTIONS ..................... 17 APPENDIX C – ELECTRICAL INTERFACE ......................18 APPENDIX D – ASYNCHRONOUS COMMUNICATIONS .................. 19 APPENDIX E – MECHANICAL DRAWING ......................20 WARRANTY ................................ 21 ....................................© Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 3: Introduction

    Introduction The Sealevel COMM+2.422.PCIe (Item# 7402e) provides a PCI Express 1.0a compliant interface adapter with four asynchronous serial ports for industrial automation and control applications. The serial ports are field selectable for RS-422 or RS-485 and support data rates to 921.6 Kbps.
  • Page 4 © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 5: Before You Get Started

    Before You Get Started What’s Included The COMM+4.422.PCIe is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement. COMM+422.PCIe Serial I/O Adapter – Four-Port 422/485 Serial Interface • 7402e – PCI Express Board with Low Profile PC Bracket •...
  • Page 6 Optional Items Depending upon your application, you are likely to find one or more of the following items useful with the COMM+4.422.PCIe. All items can be purchased from our website (www.sealevel.com) by calling our Sales team at +1 864-843-4343. DB9 to DB25 Serial Cable (Item# CA176)
  • Page 7: Hardware Description

    DB25M Serial Connectors The 7402e ships with a four-port cable (Item# CA200) that includes four DB9 male serial connectors. The pin out for these connectors is detailed in the following Technical Description section. © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 8: Hardware Configuration

    1200 bps 3255 2400 bps 3.625 4800 bps 1.875 9600 bps 1.875 19.2K bps 1.375 38.4K bps 1.375 57.6K bps 22.625 115.2K bps 230.4K bps 460.8K bps 2.125 921.6K bps 2.125 © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 9 An RS-485 ‘No Echo’ option is selected by placing both Mode switches (M0, M1) in the ‘On’ position. © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 10 Figure 1 - RS-422 Mode 1 2 3 4 5 6 7 Figure 2 - RS-485 two-wire with 'Echo' 1 2 3 4 5 6 7 Figure 3 - RS-485 two-wire No 'Echo' © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 11: Software Installation

    7. The software is now installed, and you can proceed with the hardware installation. To install Sealevel software, you must log in as an administrator or have administrator privileges in Windows. All Sealevel Systems software drivers have been fully tested by Sealevel. Clicking “OK”...
  • Page 12 OSs it will be found in the ‘Programs and Features’ list. 3. Navigate to the Device Manager and remove the Sealevel adapter by right clicking on the line item choosing ‘Uninstall’. Depending on your product, it can be found under either ‘Multiport Serial adapters’...
  • Page 13: Technical Description

    Request To Send Output Positive RTS- Request To Send Output Negative Receive Data Positive Input Receive Data Negative Input CTS+ Clear To Send Positive Input CTS- Clear To Send Negative Input © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 14 The RTS output is only available in RS-422 mode. The RTS output is tri-stated in RS-485 mode and therefore unusable. The CTS input is available in all modes. Terminating these pins, if not used, will help ensure you get the best performance from your adapter. © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 15: Specifications

    10 to 90% R.H. Non-Condensing Manufacturing All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel. Power Consumption Supply line +3.3 VDC...
  • Page 16: Appendix A - Troubleshooting

    No two adapters can occupy the same I/O address. Make sure the Sealevel Systems adapter is using a unique IRQ The IRQ is typically selected via an on-board header block. Refer to the section on Card Setup for help in choosing an I/O address and IRQ.
  • Page 17: Appendix B - Handling Instructions

    Keep work area free of non-conductive materials such as ordinary plastic assembly aids and • Styrofoam. • Use field service tools such as cutters, screwdrivers, and vacuum cleaners that are conductive. © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 18: Appendix C - Electrical Interface

    RS-485 tri-state driver (not dual-state) will allow the electrical presence of the driver to be removed from the line. Only one driver may be active at a time and the other driver(s) must be tri-stated. © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 19: Appendix D - Asynchronous Communications

    The communication parameters are baud rate, parity, number of data bits per character, and stop bits (i.e. 9600,N,8,1). © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 20: Appendix E - Mechanical Drawing

    Appendix E – Mechanical Drawing © Sealevel Systems, Inc. 7402e Manual | SL9251 11/2022...
  • Page 21: Warranty

    Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn-in and testing.

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