ULTRA COMM+I.PCI USER MANUAL
Contents
1. 2 5 4 5 8 c7 US BE SSB SS SS Ss BE a U4 R2 83 SS 88 R4 Up R8 89 SS 88 C13 C14 BEBE U7 R19 R29 Sees 821 R22 BH EB U11 R24 R25 DO R27 R2B SS 88 U1 C20 C21 55 88 R23 S y12 LE dS Ww no 983 C22 7183 MADE IN USA 8 BEB B B o EER YE 55868688886887 R1 Se sa c9 ss Gia C11 eee ER C15 16 R19 R11 ma SS BE BS ED II 8 88 8 88 15 Ua DDAR 1 4 eee ed EIE N HEHEHEHEAER P3 12 R6 R7 SS SSS a R12 R13 R14 BE EB 1 20 9 1 C17 ee R26 R29 R30 55 aa R31 32 O sa 02 12 6 8 E Do IN q D ES eiet el u9 SE ER 1 1 Page 17 Sealevel Systems ULTRA COMM LPCI Appendix G Compliance Notices Appendix G Compliance Notices Federal Communications Commission Statement FCC This equipment has been tested and found to comply with the limits for Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the2. Sealevel Systems ULTRA COMM LPCI Page 12 Appendix C Electrical Interface Appendix C Electrical Interface RS 232 Quite possibly the most widely used communication standard is RS 232 This implementation has been defined and revised several times and is often referred to as RS 232 or EIA TIA 232 The IBM PC computer defined the RS 232 port on a 9 pin D sub connector and subsequently the EIA TIA approved this implementation as the EIA TIA 574 standard This standard is defined as the 9 Position Non Synchronous Interface between Data Terminal Equipment and Data Circuit Terminating Equipment Employing Serial Binary Data Interchange Both implementations are in wide spread use and will be referred to as RS 232 in this document RS 232 is capable of operating at data rates up to 20 Kbps at distances less than 50 ft The absolute maximum data rate may vary due to line conditions and cable lengths RS 232 is a single ended or unbalanced interface meaning that a single electrical signal is compared to a common signal ground to determine binary logic states The RS 232 and the EIA TIA 574 specification define two types of interface circuits Data Terminal Equipment DTE and Data Circuit Terminating Equipment DCE The ULTRA COMM LPCI is a DTE device RS 422 The RS 422 specification defines the electrical characteristics of balanced voltage digital interface circuits RS 422 is a differential interface that defines voltage levels and driver re
3. a ee Pe oi 10 POWER CONSUMPTION a 10 MEAN TIME BETWEEN FAILURES MT BP 10 PHYSICAL DMENSIONS ee R ee ee ee 10 APPENDIX TROUBLESHOOTING cccccsssssssssssssssssssssseces 1 1 APPENDIX B HOW TO GET 55 12 APPENDIX C ELECTRICAL INTERFACE ccccccccsscsccscssseeeee 1 3 RE EE EE EPT ENE E E 13 Kette 13 EES EE EE OE EE EE NE 14 APPENDIX D GROUND LOOP PHENOMENON 55 15 WHAT IS GROUND Loop 15 CABLING RECOMMENDATIONS 15 APPENDIX E ASYNCHRONOUS COMMUNICATIONS 16 APPENDIX F SILK SCREEN cccccssssssscssssssscssscssssssssssssssseses L7 APPENDIX G COMPLIANCE NOTICES 999 9 18 FEDERAL COMMUNICATIONS COMMISSION STATEMENT 18 EMC DIRECTIVE STATEMENT ee ee ee ee ee 18 WARRBANTY soes SE side bee Ge SG Ged Geo Ge ge LO Figures 2000b Sealevel Systems Incorporated All rights reserved Introduction Introduction Overview The Sealevel Systems ULTRA COMMA LPCI is a single channel isolated PCI Bus serial I O adapter for the PC and compatibles Utilizing the Exar 16C850 UART with its industry leading 128
4. position silk screen D4 To select the maximum data rate 460 8K bps set switch position to the On position silk screen D1 Divide by Divide by 4 mode 1 mode Figure 7 Clocking Modes Sealevel Systems ULTRA COMM LPCI Page 5 Card Setup Baud Rates and Divisors for the Divl mode The following table shows some common data rates and the rates you should choose to match them if using the adapter in the Div1 mode 2400 bps 600 bps 9600 bps 2400 bps 57 6 K bps 14 4K bps 230 4K bps 57 6K bps 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 384 9600 bps 48 19 2K bps 24 38 4K bps 1 57 6K bps 460 8K bps Sealevel Systems ULTRA COMM LPCI Page 6 Installation Installation Operating System Installation For Windows Users Start by choosing Install Software at the beginning of the CD Choose Asynchronous COM Port Software SeaCOM Other Operating Systems Refer to the appropriate section of the Serial Utilities Software System Installation The ULTRA COMM LPCI 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 Turn off PC power Disconnect the power cord Remove the PC case cover Locate an available PCI slot and remove the blank metal slot
5. 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 1 Identify all I O adapters currently installed in your system This includes your on board serial ports controller cards sound cards etc The I O addresses used by these adapters as well as the IRQ if any should be identified Configure your Sealevel Systems adapter so that there is no conflict with currently installed adapters No two adapters can occupy the same I O address Make sure the Sealevel Systems adapter is using a unique IRQ While the Sealevel Systems adapter does allow the sharing of IRQs many other adapters 1 6 SCSI adapters amp on board serial ports do not 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 Make sure the Sealevel Systems adapter is securely installed in a motherboard slot When running DOS or Windows 3 x refer to the supplied Sealevel Software and this User Manual to verify that the Sealevel Systems adapter is configured correctly This software contains a diagnostic program SSD that will verify if an adapter is configured properly This diagnostic program is written with the user in mind and is easy to use For Window
6. byte FIFOs it provides a field selectable RS 232 422 485 serial port supporting data rates up to 460 8K bps RS 422 485 Configure as RS 232 for standard serial COM port requirements Choose the RS 422 mode for long distance device connections up to 5000ft where noise immunity and high data integrity are essential Select RS 485 and capture data from multiple peripherals in a RS 485 multidrop network Up to 31 RS 485 devices can be connected to each port to automate your data collection You can even mix the ports in any of the interface combinations to provide maximum flexibility to your application Optional Terminal Block adapters are available to simplify field wiring connections 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 on board hardware automatically handles the RS 485 driver enable What s Included The ULTRA COMM LPCI is shipped with the following items If any of these items is missing or damaged contact the supplier e ULTRA COMM LPCI Serial I O Adapter e Sealevel Software Factory Default Settings The ULTRA COMM LPCI factory default settings are as follows Electrical Specification RS 422 To install the ULTRA COMMG IPCI using factory default setti
7. instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause 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 of measurement of radio interference characteristics of information technology equipment EN55024 Information technology equipment Immunity characteristics Limits and methods of measurement EN60950 IEC950 Safety of information technology equipment including electrical business equipment Warning This is a Class A Product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures 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 ULTRA COMM LPCI Page 18 Warranty Warranty Sealevel Systems Inc provides a lifetime warranty for this product Should this product fail to be in good working order at any t
8. is connect RTS to CTS and RI Also connect DCD to DTR and DSR Terminating these pins if not used will help insure you get the best performance from your adapter RS 422 485 530 Pin Assignments DB 25 Male Signal Name 1 Mode DE Ground Receive Data Positive Input Receive Data Negative Input 5 CTS Clear To Send Positive Input CTSA CTS Clear To Send Negative Input B TX Transmit Data Positive Output A Transmit Data Negative Output RTSB EST Request To Send Positive Output RTSA RTS Request To Send Negative Output TD TD Sealevel Systems ULTRA COMM LPCI Page 9 Specifications Specifications Environmental Specifications Temperature Range 0 to 50 C 20 to 70 C 32 to 122 F 4 to 158 F Humidity Range 10 to 90 R H 10 to 90 R H Non Condensing Non Condensing Manufacturing e Sealevel Systems Printed Circuit boards are built to UL 94VO 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 380 mA Mean Time Between Failures MTBF Greater than 150 000 hours Calculated Physical Dimensions Board length 4 90 inches 11 684 cm Board Height including Goldfingers 3 50 inches 8 89 cm Board Height excluding Goldfingers 3 175 inches 8 06 cm Sealevel Systems ULTRA COMM LPCI Page 10 Appendix A Troubleshooting Appendix A
9. 2 receivers to be connected to one line This interface is ideal for multi drop or network environments 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 RS 485 can be cabled in two ways two wire and four wire mode Two wire mode does not allow for full duplex communication and requires that data be transferred in only one direction at a time For half duplex operation the two transmit pins should be connected to the two receive pins 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 ULTRA COMM LPCI Page 14 Appendix D Asynchronous Communications Appendix D Ground Loop Phenomenon What is Ground Loop Ground loop Phenomenon occurs when two or more pieces of equipment are connected together with a common ground and a different ground potential exists at each location This current can cause the connected equipment to experience noise that in turn causes data transmission errors In the extreme this ground current can cause equipment malfunction or even destruction Cabling Recommendations When connecting the ULTRA COMMH LPCI in a RS 485 network care should be taken that both ends of the network are not isolated from grou
10. SEALEVEL S 4 ULTRA COMM I PCI USER MANUAL Part 7103 Sealevel Systems Inc 155 Technology Place P O Box 830 Liberty SC 29657 USA Phone 864 843 4343 FAX 864 3067 www sealevel c Contents OVERVIEW EE 1 ER Re le IER 1 FACTORY DEFAULT BPTTINGS 1 ERT Ou A BEE ELECTRICAL INTERFACE SELECTION erorvrrrnrrnnrrnvrrnrenvernverenervernnernnsnnennns 2 EINE TERMINATION ie GR Re ee bere Ge ig ee 3 RS 485 ENABLE MODES eise esse see ees ee ee ee ee ee ee ee ee ee Re ee ee 4 RS 485 ENABLE MODES esse sesse see ee ee ee ee Re Re 4 CLOCK MODES 5 5 Eed de cot scars Seet det 5 BAUD RATES AND DIVISORS FOR THE DI Mopp 6 OPERATING SYSTEM INSTALLATION eeue esse esse ee ee eene ee 7 For Windows Users ese ee ee ee ee ee ee ee ee ee ee 7 Other Operating Systems E 7 SYSTEM INSTALLATION ese esse sesse eene ee ee ee Re Re Re ee ee ee 7 TECHNICAL DESCRIPTION cccccsssssscsccccccccccesccccccccccecscesccsccees D CONNECTOR PIN ASSIGNMENTS 9 RS 232 Signals DB 25 Male 6 66 5 59 9 RS 422 485 530 Pin Assignments DB 25 Malei 9 SPECIFICATIONS 9 sissies iese bedes ee LO ENVIRONMENTAL RPECTIEICATIONS ee ees ees ee ee ee ee ee ee ee ee ge 10 MANUFACTURING esse Re ge era ee Fee
11. ceiver electrical specifications On a differential interface logic levels are defined by the difference in voltage between a pair of outputs or inputs In contrast a single ended interface for example RS 232 defines the logic levels as the difference in voltage between a single signal and a common ground connection Differential interfaces are typically more immune to noise or voltage spikes that may occur on the communication lines Differential interfaces also have greater drive capabilities that allow for longer cable lengths RS 422 is rated up to 10 Megabits per second and can have cabling 4000 feet long RS 422 also defines driver and receiver electrical characteristics that will allow I driver and up to 32 receivers on the line at once RS 422 signal levels range from 0 to 5 volts RS 422 does not define a physical connector Sealevel Systems ULTRA COMM LPCI Page 13 Appendix C Electrical Interface RS 485 RS 485 is backwardly compatible with RS 422 however it is optimized 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 has electrical characteristics that allow for 32 drivers and 3
12. cover Gently insert the ULTRA COMMH LPCI into the slot Make sure that the adapter is seated properly 5 Replace the screw 6 Replace the cover 7 Connect the power cord Pe Installation is complete Sealevel Systems ULTRA COMM LPCI Page 7 Technical Description Technical Description The Sealevel Systems ULTRA COMM LPCI provides a PCI interface adapter with an isolated asynchronous serial port providing a versatile interface field selectable as RS 232 for modems printers and plotters as well as RS 422 485 for industrial automation and control applications Isolation is important in installations where the equipment being connected to the PC is either far from the PC or on a different power transformer circuit Ground loop current is a commonly neglected and misunderstood phenomenon that leads to data loss and the destruction of communications interfaces The ULTRA COMM LPCI utilizes the 16C850 UART This chip features programmable baud rates data format interrupt control and industry leading 128 byte FIFOs Sealevel Systems ULTRA COMM LPCI Page 8 Technical Description Connector Pin Assignments RS 232 Signals DB 25 Male Ground Receive Data Input Clear To Send 5 Input Transmit Data 2 Output RTS Request io Send 4 Output Note These assignments meet EIA TTA ANSI 232E DTE Technical Note Please terminate any control signals that are not going to be used The most common way to do this
13. fined by the transmission 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 Idle state of Odd Even lins postos Data Bits ua oo Weide ege 4 i FT PIC Br 11 0 lt der i 1 1 Pim a 1 e gt Figure 9 Asynchronous Communications Bit Diagram This special bit is called the parity bit Parity is a simple method of determining if a data bit has been lost or corrupted during transmission There are several methods for implementing a parity check to guard against data corruption Common methods are called E ven Parity or O dd Parity Sometimes parity is not used to detect errors on the data stream This is refereed to as N o parity Because each bit in asynchronous communications is sent consecutively it is easy to generalize asynchronous communications by stating that each character is wrapped framed by pre defined bits to mark the beginning and end of the serial transmission of the character The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends The communication parameters are baud rate parity number of data bits per character and stop bits i e 9600 N 8 1 Sealevel Systems ULTRA COMM LPCI Page 16 Appendix F Silk Screen Appendix F Silk Screen 3 5 4 9 as EE q
14. ime during this period Sealevel Systems will at it s option replace or repair it at no additional charge except as set forth in the following terms This warranty does not apply to products damaged by misuse modifications accident or disaster Sealevel Systems assumes no liability for any damages lost profits lost savings or any other incidental or consequential damage resulting from the use misuse of or inability to 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 RETURN MERCHANDISE AUTHORIZATION RMA NUMBER Sealevel Systems Incorporated 155 Technology Place P O Box 830 Liberty SC 29657 USA 864 843 4343 FAX 864 843 3067 www sealevel com email support O sealevel com Technical Support is available from 8 a m to 5 p m Eastern time Monday Friday Trademarks Sealevel Systems Incorporated acknowledges that all trademarks referenced in this manual are the service mark trademark or registered trademark of the respective company ULTRA COMMH LPCI is a trademark of Sealevel Systems Incorporated Sealevel Systems ULTRA COMM LPCI Page 19
15. nction Adds or removes the 120 ohm termination Adds or removes the IK ohm pull down resistor in the RS 422 RS 485 receiver circuit Receive data only Adds or removes the IK ohm pull up resistor in the RS 422 RS 485 receiver circuit Receive data only Connects the TX to RX for RS 485 two wire operation Connects the TX to RX for RS 485 two wire operation Sealevel Systems ULTRA COMM LPCI Page 3 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 COMM LPCI is the ability to be RS 485 compatible without the need for special software or drivers This ability is especially useful in Operating Systems where the lower level I O control is abstracted from the application program This ability means that the user can effectively use the ULTRA COMM LPCI in an RS 485 application with existing i e standard RS 232 software drivers Switch SW2 is used to control the RS 485 mode functio
16. nd see Figure 8 This floating ground condition could cause the capacitive or inductive coupling of voltages that will cause a break down in the DC to DC converter circuit or in the opto isolator circuit This condition will cause data errors and possibly destruction of the receiver circuit A B DATA Non Isolated Isolated Adapter Ground A dapter Isolation Barrier Figure 8 ULTRA COMM PCI cabling example Sealevel Systems ULTRA COMM LPCI Page 15 Appendix E Asynchronous Communications Appendix E Asynchronous Communications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character Data rate error checking handshaking and character framing start stop bits are pre defined and must correspond at both the transmitting and receiving ends Asynchronous communications is the standard means of serial data communication for PC compatibles and PS 2 computers The original PC was equipped with a communication or COM port that was designed around an 8250 Universal Asynchronous Receiver Transmitter UART This device allows asynchronous serial data to be transferred through a simple and straightforward programming interface A start bit followed by a pre defined number of data bits 5 6 7 or 8 defines character boundaries for asynchronous communications The end of the character is de
17. ngs refer to Installation on page 7 Sealevel Systems ULTRA COMM LPCI Page 1 Card Setup Card Setup Electrical Interface Selection The ULTRA COMM LPCI has the ability to be used as RS 232 RS 422 or RS 485 This is selectable via a DIP switches SW1 Please use the following examples to configure your adapter ON RS 232 OFF 12345678 910 123 TPPLLE Figure 1 RS 232 ON RS 422 OFF 12345678 910 123 TPPLLE Figure 2 RS 422 4 Wire Su sie ees W Echo ie PE SEE TE 123TPPLLE Figure 3 RS 485 4 Wire with Echo 2 Wire EI RS 485 W Echo are ae Ae 123TPPLLE Figure 4 RS 485 2 Wire with Echo Sealevel Systems ULTRA COMM LPCI Page 2 Card Setup 2 Wire RS 485 OFF NO Echo 12345678 910 123 TPPLLE Figure 5 R 485 2 wire without Echo 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 input in addition to a 1K ohm pull up pull down combination that biases the receiver inputs Switches SW1 and SW2 allow the user to customize this interface to their specific requirements Each switch position corresponds to a specific portion of the interface If multiple ULTRA COMM LPCI adapters are configured in a RS 485 network only the boards on each end should have jumpers T P amp P ON Refer to the following table for each position s operation Fu
18. ns for the driver circuit The selections are RTS enable silk screen RT switch position 4 or Auto enable silk screen AT switch position 3 The Auto enable feature automatically enables disables the RS 485 interface The RTS mode uses the RTS modem control signal to enable the RS 485 interface and provides backward compatibility with existing software products 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 Position 9 of SWI is used to control the RS 485 enable disable functions for the receiver circuit To select the No Echo mode place switch position 9 to the On position see Figure 5 SW2 SW2 RS 232 422 RS 485 Default 88 Auto 1234 Enabled DDAR DDAR 14 TT 14 TT Figure 6 RS 485 Enable modes Sealevel Systems ULTRA COMM LPCI Page 4 Card Setup Clock Modes The ULTRA COMM LPCI employs a unique clocking option that allows the end user to select from divide by 4 and divide by 1 clocking modes These modes are selected at switches SW 2 To select the Baud rates commonly associated with COM ports i e 2400 4800 9600 19 2 115 2K Bps set switch position 2 to the On
19. s95 98 ME NT 2000 the diagnostic tool WinSSD is installed in the SeaCOM folder on the Start Menu during the setup process First find the ports using the Device Manager then use WinSSD to verify that the ports are functional Always use the Sealevel Systems diagnostic software when troubleshooting a problem This will eliminate any software issues from the equation Sealevel Systems ULTRA COMM LPCI Page 11 Appendix B How To Get Assistance Appendix B How To Get Assistance Please refer to Appendix A Troubleshooting prior to calling Technical Support 1 Read this manual thoroughly before attempting to install the adapter in your system 2 When calling for technical assistance please have your user manual and current adapter settings If possible please have the adapter installed in 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 be accessed from our home page 4 Technical support is available Monday through Friday from 8 00 a m to 5 00 p m eastern time Technical support can be reached at 864 843 4343 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
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