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Sealevel Systems, Inc.

155 Technology Place
P.O. Box 830
Liberty, SC 29657 USA

Phone:  (864) 843-4343
FAX:    (864) 843-3067

DUAL SIO

USER MANUAL

TM

www.sealevel.com

Summary of Contents for DUAL SIO 3082

Page 1: ...Sealevel Systems Inc 155 Technology Place P O Box 830 Liberty SC 29657 USA Phone 864 843 4343 FAX 864 843 3067 DUAL SIO USER MANUAL TM www sealevel com ...

Page 2: ...ystems 5 TECHNICAL DESCRIPTION 6 FEATURES 6 LINE TERMINATION 6 CONNECTOR PIN ASSIGNMENTS 7 RS 422 DB 9 Male 7 SPECIFICATIONS 8 ENVIRONMENTAL SPECIFICATIONS 8 MANUFACTURING 8 POWER CONSUMPTION 8 MEAN TIME BETWEEN FAILURES MTBF 8 PHYSICAL DIMENSIONS 8 APPENDIX A TROUBLESHOOTING 9 APPENDIX B HOW TO GET ASSISTANCE 11 APPENDIX C ELECTRICAL INTERFACE 12 RS 422 12 RS 485 12 APPENDIX D ASYNCHRONOUS COMMUN...

Page 3: ...TEMENT 16 WARRANTY 17 Trademarks 17 Figures Figure 1 Address Selection Table 2 Figure 2 DIP Switch Illustration 2 Figure 3 Header E6 IRQ Selection 3 Figure 4 Header E3 and E4 RS 485 Enable 4 Figure 5 Asynchronous Communications Bit Diagram 13 1999a Sealevel Systems Incorporated All rights reserved ...

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Page 5: ...ing or damaged contact the supplier Dual SIO Serial I O Adapter Serial Utility Software User Manual Factory Default Settings The Dual SIO factory default settings are as follows Port Base Address IRQ Electrical Specification Port 1 3F8 4 RS 422 Port 2 2F8 3 RS 422 To install the Dual SIO using factory default settings refer to the section on Installation in this manual For your reference record in...

Page 6: ...On 2A0 2A7 1010100XXX Off On Off On Off On On 2E8 2EF 1011101XXX Off On Off Off Off On Off 2F8 2FF 1011111XXX Off On Off Off Off Off Off 3E8 3EF 1111101XXX Off Off Off Off Off On Off 300 307 1100000XXX Off Off On On On On On 328 32F 1100101XXX Off Off On On Off On Off 3F8 3FF 1111111XXX Off Off Off Off Off Off Off Figure 1 Address Selection Table The following illustration shows the correlation be...

Page 7: ...3 Note Most communications software applications default COM3 to IRQ4 and COM4 to IRQ3 This requires the sharing of interrupts between COM1 and COM3 and between COM2 and COM4 While this is the default it is not always the preferred setting Check your software configuration instructions to determine the most appropriate IRQ selection E2 2 9 3 4 5 2 9 3 4 5 E1 Figure 3 Header E6 IRQ Selection Factor...

Page 8: ...bles the driver Removing the jumper enables the driver regardless of RTS E3 controls Port 2 while E4 controls Port 1 This jumper should only be installed if you are running the board in a multi drop polled environment such as RS 485 For normal point to point RS 422 such as terminal emulation remove this jumper Figure 4 shows both ports configured for RS 422 operation E4 E3 1 2 Figure 4 Header E3 a...

Page 9: ...ities Software The Dual SIO can be installed in any of the PC expansion slots The Dual SIO contains several jumper straps for each port which must be set for proper operation 1 Turn off PC power Disconnect the power cord 2 Remove the PC case cover 3 Locate an available slot and remove the blank metal slot cover 4 Gently insert the Dual SIO into the slot Make sure that the adapter is seated properl...

Page 10: ...are a single IRQ IRQ s 2 9 3 4 5 supported Support for non standard baud rates available These baud rates such as 31 25K or 76 8K baud are supported by installing a different oscillator Please consult Sealevel Systems Technical Support for more information Driver software included for Windows RS 485 operation Line Termination Typically each end of the RS 422 485 bus must have line terminating resi...

Page 11: ...ame Pin Mode GND Ground 5 TX Transmit Data Positive 4 Output TX Transmit Data Negative 3 Output RTS Request To Send Positive 6 Output RTS Request To Send Negative 7 Output RX Receive Data Positive 1 Input RX Receive Data Negative 2 Input CTS Clear To Send Positive 9 Input CTS Clear To Send Negative 8 Input ...

Page 12: ... boards are built to U L 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 12 VDC 12 VDC 5 VDC Rating 25 mA 25 mA 195 mA Mean Time Between Failures MTBF Greater than 150 000 hours Calculated Physical Dimensions Board Length 4 6 inches 11 68 cm Board Height including Goldfingers 4 2 ...

Page 13: ...ection on Card Setup for help in choosing an I O address and IRQ 4 Make sure the Sealevel Systems adapter is securely installed in a motherboard slot 5 When running DOS Windows 3 x or other operating systems refer to the Serial Utilities software for that operating system and the User Manual to verify that the Sealevel Systems adapter is configured correctly The supplied software contains a diagno...

Page 14: ...O conflicts The 278 and 378 settings may conflict with your printer I O adapter 3B0 cannot be used if a Monochrome adapter is installed 3F8 3FF is typically reserved for COM1 2F8 2FF is typically reserved for COM2 3E8 3EF is typically reserved for COM3 2E8 2EF is typically reserved for COM4 ...

Page 15: ... a computer ready to run diagnostics 3 Sealevel Systems maintains a Home Page on the internet Our home page address is www sealevel com The latest software updates and newest manuals are available via our ftp site that can accessed from our home page 4 Technical support is available Monday to Friday from 8 00 a m to 5 00 p m Eastern time Technical support can be reached at 864 843 4343 RETURN AUTH...

Page 16: ...mized for partyline or multi drop applications The output of the RS 422 485 driver is capable of being Active enabled or Tri State disabled This capability allows multiple ports to be connected in a multi drop bus and selectively polled RS 485 allows cable lengths up to 4000 feet and data rates up to 10 Megabits per second The signal levels for RS 485 are the same as those defined by RS 422 RS 485...

Page 17: ...ssion of a pre defined number of stop bits usually 1 1 5 or 2 An extra bit used for error detection is often appended before the stop bits Remain Idle or next start bit Odd Even or Unused STOP P BIT 5 to 8 Data Bits Idle state of line 1 0 1 1 5 2 Figure 5 Asynchronous Communications Bit Diagram This special bit is called the parity bit Parity is a simple method of determining if a data bit has bee...

Page 18: ...Appendix E Silk Screen Sealevel Systems Dual SIO Page 14 Appendix E Silk Screen 4 2 4 6 3 9 ...

Page 19: ...Appendix F Schematic Sealevel Systems Dual SIO Page 15 Appendix F Schematic ...

Page 20: ...harmful interference in such case the user will be required to correct the interference at his own expense EMC Directive Statement Products bearing the CE Label fulfill the requirements of the EMC directive 89 336 EEC and of the low voltage directive 73 23 EEC issued by the European Commission To obey these directives the following European standards must be met EN55022 Class A Limits and methods ...

Page 21: ...o use this product Sealevel Systems will not be liable for any claim made by any other related party RETURN AUTHORIZATION MUST BE OBTAINED FROM SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL BE ACCEPTED AUTHORIZATION CAN BE OBTAINED BY CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN MERCHANDISE AUTHORIZATION RMA NUMBER Sealevel Systems Incorporated 155 Technology Place P O Box 830 Liberty SC 2...

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