SeaLevel IC485+ User Manual
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SeaLevel IC485+ User Manual

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IC485+
User Manual | 1102
1
© Sealevel Systems, Inc.
1102 Manual | SL9135 6/2021

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Summary of Contents for SeaLevel IC485+

  • Page 1 IC485+ User Manual | 1102 © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 2: Table Of Contents

    APPENDIX B – HOW TO GET ASSISTANCE ..................... 18 APPENDIX C – ELECTRICAL INTERFACE ......................19 APPENDIX D – ASYNCHRONOUS COMMUNICATIONS .................. 20 APPENDIX E – SILK-SCREEN ..........................21 APPENDIX F – COMPLIANCE NOTICES ......................22 WARRANTY ................................ 23 © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...
  • Page 3 Enable” mode uses the transmitted data to enable the transmitter and requires no software drivers. This mode has limitations that will be discussed in more detail later. The “RTS Enable” mode uses the UART modem control signal RTS to control the communication line and requires the Sealevel Systems’ serial driver.

  • Page 4: Before You Get Started

    Before You Get Started What’s Included The IC485+ is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement. • IC485+ Serial I/O Adapter • Power Supply 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.
  • Page 5 Port # Electrical Specification Port 1 RS-422 To install the IC485+ using factory default settings, refer to Installation. For your reference, record installed IC485+ settings below: Port # Electrical Specification Port 1 © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 6: Card Setup

    ‘RS-485 RTS Enable Mode’. The ‘RTS’ enable mode uses the ‘RTS’ modem control signal to enable the RS- 485 interface and provides backward compatibility with existing software products. Sealevel Systems’ serial driver should be used and configured for ‘RTS’ control providing a robust RS-485 solution.
  • Page 7 Figure 1- Dip switch SW1, RS-422 Figure 2 – Dip switch SW1, RS-485 ‘Auto’ Enable Figure 3 – Dip switch SW1, RS-485 ‘RTS’ Enable Figure 4 – Dip switch SW1, RS-485 ‘Data’ Enable © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...
  • Page 8 Connects TX+ to RX+ for RS-485 two-wire operation Connects TX- to RX- for RS-485 two-wire operation Receiver Echo Off/On (On = Echo Off) Figure 5 – Dip switch SW2, Line Termination and Echo Off/On © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...
  • Page 9 Figure 6 – RS-422 with Termination and Receiver Echo Figure 7 – RS-485 2-wire with Termination and Receiver No Echo Figure 8 – RS-485 2-wire no Termination and Receiver No Echo © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 10: Operating System Installation (For Windows Users)

    IC485+ to an existing RS-232 COM: port. This will utilize the Operating System Serial Driver to control the COM: port. You will want to install Sealevel’s diagnostic utility, WinSSD, to test and verify proper operation of the port.
  • Page 11 The second method is ‘RTS Enable’ which uses Sealevel’s Windows based serial drivers to control the UART modem control signal RTS. RTS is connected to the transmitter enable circuit and thru software control, provides an efficient method of line-turnaround. This abstracts the application from the low-level control and simplifies application development.
  • Page 12 Physical Installation The IC485+ can be connected to any existing RS-232 port. A cable such as Sealevel’s’ CA-177 can be used to attach the IC485+ DB-25F to the PC’s DB-9M connector. Locate an existing RS-232 COM: port and connect the IC485+.
  • Page 13 At higher baud rates this becomes especially critical due to the speed of the onboard microcontroller. The utmost priority is given to sampling the incoming data. To install Sealevel software, you must log in as an administrator or have administrator privileges.

  • Page 14: Technical Description

    Technical Description The Sealevel Systems IC485+ converts an existing RS-232 serial port into a field selectable RS-422/485 port for industrial automation and control applications. Connector Pin Assignments RS-232 Signals (DB-25 Female) Signal Name Pin # Mode Ground Receive Data Input...
  • Page 15 RS-422/485 Pin Assignments (6 Position Screw Terminal) Signal Name Pin # Mode Receive Data Positive Input Receive Data Negative Input Transmit Data Positive Output Transmit Data Negative Output Ground SHIELD Shield © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 16: Technical 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. Physical Dimensions Package Length 3.8 inches (9.66 cm)

  • Page 17: Appendix A - Troubleshooting

    If you are experiencing problems, a good starting point is to verify proper operation of the host RS-232 COM: port. Connect the host port TX and RX lines and use Sealevel’s WinSSD utility to perform a loopback test. If you cannot open the host port, ensure that it is enabled in the System BIOS. If using a Plug ‘n’...

  • Page 18: Appendix B - How To Get Assistance

    If possible, please have the adapter installed in a computer ready to run diagnostics. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many common questions. This section can be found at http://www.sealevel.com/faq.asp.

  • Page 19: Appendix C - Electrical Interface

    (Tx+ to Rx+ and Tx- to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not define a connector pin-out or a set of modem control signals. RS-485 does not define a physical connector. © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 20: 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. 1102 Manual | SL9135 6/2021...

  • Page 21: Appendix E - Silk-Screen

    Appendix E – Silk-Screen © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 22: Appendix F - Compliance Notices

    Always use cabling provided with this product if possible. If no cable is provided or if an alternate cable is required, use high quality shielded cabling to maintain compliance with FCC/EMC directives. © Sealevel Systems, Inc. 1102 Manual | SL9135 6/2021...

  • Page 23: 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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