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Summary of Contents for SeaLevel ULTRA 485+2.PCI
- Page 1 ULTRA 485+2.PCI™ User Manual | 7204 © Sealevel Systems, Inc. 7204 Manual | SL9061 7/2021...
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Page 2: Table Of Contents
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. 7204 Manual | SL9061 7/2021... - Page 3 Introduction The Sealevel Systems ULTRA 485+2.PCI is a two channel PCI Bus serial I/O adapter for the PC and compatibles and features the 16850 advanced UART. It provides two field selectable RS422/485 serial ports supporting data rates up to 460.8K bps. The 16850 advanced UART provides a 128 byte FIFO that helps reduce processor overhead by reducing the number of interrupts that need servicing.
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Page 4: Before You Get Started
Before You Get Started What’s Included The ULTRA 485+2.PCI is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement. ULTRA 485+2.PCI Serial I/O Adapter • User Manual • Advisory Conventions... - Page 5 Port # Electrical Specification Port 1 RS-422 Port 2 RS-422 To install the ULTRA 485+2.PCI using factory default settings, refer to Installation. For your reference, record installed ULTRA 485+2.PCI settings below: Port # Electrical Specification Port 1 Port 2 © Sealevel Systems, Inc.
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Page 6: Card Setup
Some communication software packages refer to RS-485 as RTS enable or RTS block mode transfer. One of the unique features of the ULTRA 485+2.PCI 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. - Page 7 Figure 3 - Headers J1B and J2B, RS-485 ‘Auto’ Enabled, with ‘Echo’ Figure 4 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘No Echo’ Figure 5 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘Echo’ © Sealevel Systems, Inc. 7204 Manual | SL9061 7/2021...
- Page 8 Each jumper position corresponds to a specific portion of the interface. If multiple ULTRA 485+2.PCI 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...
- Page 9 Clock Modes The ULTRA 485+2.PCI employs a unique clocking option that allows the end user to select from divide by 4, divide by 2 and divide by 1 clocking modes. These modes are selected at Headers J1C through J4C. To select the Baud rates commonly associated with COM: ports (i.e. 2400, 4800, 9600, 19.2, … 115.2K Bps ) place the jumper in the divide by 4 mode (silk-screen DIV4).
- Page 10 For this Data Rate Choose this Divisor 1200 bps 2400 bps 4800 bps 9600 bps 19.2K bps 38.4K bps 57.6K bps 115.2K bps 230.4K bps 460.8K bps © Sealevel Systems, Inc. 7204 Manual | SL9061 7/2021...
- Page 11 If your communications package allows the use of Baud rate divisors, choose the appropriate divisor from the following table: For this Data Rate Choose this Divisor 1200 bps 2400 bps 4800 bps 9600 bps 19.2K bps 38.4K bps 57.6K bps 115.2K bps 230.4K bps © Sealevel Systems, Inc. 7204 Manual | SL9061 7/2021...
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Page 12: Installation
Refer to the appropriate section of the Serial Utilities Software. System Installation The ULTRA 485+2.PCI can be installed in any of the PCI expansion slots and contains several jumper straps for each port that must be set for proper operation. -
Page 13: Technical Description
IRQs. In these early days of PC’s Sealevel Systems decided that the ability to share IRQs was an important feature for any add-in I/O card. Consider that in the IBM XT the available IRQs were IRQ0 through IRQ7. Of these interrupts only IRQ2-5 and IRQ7 were actually available for use. - Page 14 485+2.PCI will allow any one of the available locations to be read to obtain the value in the status register. Both status ports on the ULTRA 485+2.PCI are identical, so any one can be read. Example: This indicates that Channel 2 has an interrupt pending.
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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... -
Page 16: Appendix A - Troubleshooting
Appendix A – Troubleshooting A Serial Utility Diskette is supplied with the Sealevel Systems adapter and will be used in the troubleshooting procedures. By using this diskette and following these simple steps, most common problems can be eliminated without the need to call Technical Support. - Page 17 System Properties. Choose the Device Manager tab and double click on the Multi-Function Adapter heading. This will show all the information concerning the Sealevel adapter. Choose the Resources tab, which will show all resources assigned to the multi-function adapter. Uncheck the Use Automatic Settings box.
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Page 18: Appendix B - How To Get Assistance
If possible, please have the adapter installed in a computer ready to run diagnostics. 3. 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-). 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. 7204 Manual | SL9061 7/2021... -
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. 7204 Manual | SL9061 7/2021... -
Page 21: Appendix E - Silk Screen
Appendix E – Silk Screen 5.0" 4.2" © Sealevel Systems, Inc. 7204 Manual | SL9061 7/2021... -
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. 7204 Manual | SL9061 7/2021... -
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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