7203 User Manual
Contents
1. 2 2 2 2 120 00 000000000000000000000000000000 9 APPENDIX TROUBLESHOOTING e eeeeeeeesesssssseeeeeessss LO APPENDIX B How TO GET 551 5 4 11 APPENDIX C ELECTRICAL INTERFACE 12 R 5 232 icto tete REA Te REFERS Fee E 12 5 422 0 edes un EORR RETE 12 R54 E ete Re rte ONSE 13 APPENDIX D GROUND LOOP PHENOMENON 14 WHAT IS GROUND 2 0 1 0 0 14 CABLING RECOMMENDATIONS ccce eene 14 APPENDIX E ASYNCHRONOUS COMMUNICATIONS 15 APPENDIX SILK SCREEN ee eeee eese cese essscsseecssssseeess LO APPENDIX COMPLIANCE 17 FEDERAL COMMUNICATIONS COMMISSION 17 EMC DIRECTIVE STATEMENT eene nennen nennen nnns 17 2 22 LO Figures Figure RS 232 5 nee rte niei ulcere 2 Ufer p m L 2 Figure 3 RS 485 4 Wire with Echo 2 Figure 4 RS 485 2 Wire with Echo 2 Figure 5 RS 485 2 wire without Echo erecta 3 Figure 6 RS 485 Enable 4 Figure 7 Clocking Modes 214 42204 400 00 0 0 0 0 0 00 02. SEALEVEL SYSTEMS INCORPORATED ISO COMM2 PCI USER MANUAL Part 4 7203 Sealevel Systems Inc P O Box 830 Liberty SC 29657 USA Phone 864 843 4343 FAX 864 843 3067 www sealevel com Contents INTRODUCTION BAVA I EATA hY Mp 1 WHAT S INCDUDED N erede 1 FACTORY DEFAULT SETTINGS 1 2 ELECTRICAL INTERFACE SELECTION eene eene 2 EINE TERMINATION 3 dee fedt ei enc E 3 RS 485 ENABLE MODES essen nennen ener enne 4 RS 485 ENABLE MODES 2012 006000000000 4 CLOCK MODES epo E 5 BAUD RATES AND DIVISORS FOR THE DIVI1 6 OPERATING SYSTEM INSTALLATION 22 2 00000 010000000044 7 For Windows ener 7 Other Operating Systems sse 7 SYSTEM INSTALLATION cere ento eH eoe pde rex 7 CONNECTOR PIN 55 5 200 0 0 0 8 8 RS 422 485 8 ENVIRONMENTAL SPECIFICATIONS 42 2 ene 9 MANUFACTURING ete He vert eee 9 POWER CONSUMPTION 4 40 000000 0004 000000000000 9 MEAN TIME BETWEEN FAILURES MTBE sese 9 PHYSICAL 8
3. 0 00000 tenete ntn annu 5 Figure 8 ISO COMM 2 cabling example eee 14 Figure 9 Asynchronous Communications Bit Diagram 15 O Sealevel Systems Inc SL9060 Revision 7 2006 Sealevel Systems Incorporated rights reserved Introduction Introduction Overview The Sealevel Systems ULTRA COMM 2I PCI is a two channel isolated PCI Bus serial I O adapter for the PC and compatibles Utilizing the Exar 16C850 UART with its industry leading 128 byte FIFOs it provides two field selectable RS 232 422 485 serial ports supporting data rates up to 460 8K bps RS 422 485 Configure both ports 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
4. BBBBBBB 000 BBBBBBBBBBBBBEBBBBEBH 74 9 SP33 IE Ss 8088888 BBHSEBHHBEBHBE Sa 46 C47 20 Sealevel Systems ULTRA COMM 2I PCI 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 the 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 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 nterference characteristics of information technology equipment EN55024 Information technology equipment Immunity characteristics Limits and m
5. Equipment DCE ULTRA COMM 72I PCI 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 receiver 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 1 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 21 PCI Page 12 Appendix 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 mul
6. 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 defined 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 line 5 to 8 Data Bits l Unused 1 peer ore Wy 1 71 T I RS IS COL FILIA E i Var ISP 0 ERST 1 mis 141 154 1 24 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 18 not used to detect errors on the data stream This 1s 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
7. 64 843 4343 RETURN AUTHORIZATION MUST BE OBTAINED FROM SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL BE ACCEPTED AUTHORIZATION CAN BE OBTAINED BY CALLING SEALEVEL SYSTEMS REQUESTING A RETURN MERCHANDISE AUTHORIZATION RMA NUMBER Sealevel Systems ULTRA COMM 2I PCI Page 11 Appendix 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
8. COM driver to be utilized for 5 485 communications Our on board hardware automatically handles the RS 485 driver enable What s Included The ULTRA 21 is shipped with the following items If any of these items is missing or damaged contact the supplier ULTRA COMM 2I PCI Serial I O Adapter Sealevel Software Factory Default Settings The ULTRA 21 factory default settings are as follows Electrical Specification RS 422 RS 422 To install the ULTRA 21 using factory default settings refer to Installation on page 7 Sealevel Systems ULTRA 21 Page 1 Card Setup Card Setup Electrical Interface Selection Each port on the ULTRA COMM 22I PCI has the ability to be used as RS 232 RS 422 or RS 485 This is selectable via two DIP switches SW1 amp SW2 Please use the following examples to configure your adapter ON EE 4 OFF 12345678910 123TPPLLE Figure 1 RS 232 ON 11 OFF 12345678910 123TPPLLE Figure 2 RS 422 4 Wire RS 485 OFF a PIE ae 123 TPPLLE Figure 3 RS 485 4 Wire with Echo 2 Wire 9 e T les W Echo ir ee eT 123TPPLLE Figure 4 RS 485 2 Wire with Echo Sealevel Systems ULTRA COMM 21 PCI Page 2 Card Setup MELLE RS 485 MI NO Echo 12345678910 123TPPLEE Figure 5 RS 485 2 wire without Echo Line Termination Typically each end of the RS 485
9. OMM 2I PCI 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 21 in an RS 485 application with existing 1 e standard RS 232 software drivers Switches SW3 and SW4 are used to control the RS 485 mode functions 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 ie using received characters to throttle the transmitter or it can confuse the system 1f the software does not Position 9 of SW1 and SW2 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 position see Figure 5 SW3 SW3 RS 485 DDAR Auto DDAR vam Enabled Sw4 SWA F
10. SE AUTHORIZATION RMA NUMBER Sealevel Systems Incorporated 2779 Greenville Highway P O Box 830 Liberty SC 29657 USA 864 843 4343 FAX 864 843 3067 www sealevel com email support 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 Sealevel Sealevel Software Sealevel Systems are registered trademarks of sealevel Systems Incorporated ULTRA 21 is a trademark of Sealevel Systems Incorporated Sealevel Systems ULTRA COMM 2I PCI Page 18
11. 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 Windows95 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 21 PCI Page 10 Appendix B How To Get Assistance Appendix B How To Get Assistance 1 Begin by reading through the Trouble Shooting Guide in Appendix A If assistance is still needed please see below 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 provides an FAQ section on its web site Please refer to this for many commonly asked questions This section can be found at http www sealevel com faq htm 4 Visit Sealevel s website at www sealevel com for the latest software updates and newest manuals 5 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 8
12. bus must have line terminating resistors RS 422 terminates at the receive end only A 120 ohm resistor 1s 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 22I PCI 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 Adds or removes the 120 ohm termination Adds or removes the ohm pull down resistor in the RS 422 RS 485 receiver circuit Receive data only 485 receiver circuit Receive data only Sealevel Systems ULTRA 21 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 C
13. data transmission errors In the extreme this ground current can cause equipment malfunction or even destruction Cabling Recommendations When connecting the ULTRA COMM 2I PCI in a RS 485 network should be taken that both ends of the network are not isolated from ground 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 DATA B DATA Non Isolated Isolated roun Adapter Adapter Isolation Barrier INA SS 1 Figure 8 ULTRA 21 cabling example Sealevel Systems ULTRA COMM 21 PCI Page 14 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
14. ethods 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 21 PCI Page 17 Warranty Warranty Sealevel Systems Inc provides a lifetime warranty for this product Should this product fail to be in good WARRANTY working order at any time 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 A RETURN MERCHANDI
15. he 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 2LPCI utilizes the 16C850 UART This chip features programmable baud rates data format interrupt control and industry leading 128 byte FIFOs Connector Pin Assignments RS 232 Name TD Transmit Data RTS Request To Send GND Ground RD Receive Data CTS Clear To Send Note These assignments meet EIA TIA ANSI 574 DTE for DB 9 type connectors RS 422 485 Signal GND TX Transmit Data Negative RTS Request To Send Positive 6 RTS CTS Clear Send Positive 9 CTS Clear Send Negative 8 Sealevel Systems ULTRA 21 Page 8 Specifications Specifications Environmental Specifications Temperature 0 to 50 C 20 to 70 C Range 32 to 122 F 4 to 158 F Humidity Range 10 to 90 10 to 90 Non Condensing Non Condensing Manufacturing 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 5 VDC 480 mA Mean Time Between Failures MTBF Greater than 150 000 hours Calculated Physical Dimensions Board length 6 5 i
16. igure 6 RS 485 Enable modes Sealevel Systems ULTRA COMM 21 PCI Page 4 Card Setup Clock Modes The ULTRA COMM 2I PCI 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 SW3 amp SWA 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 position silk screen D4 To select the maximum data rate 460 8K bps set switch position to the On position silk screen D1 SW3 Divide by 4 mode DDAR 14TT Divide by mode SWA Figure 7 Clocking Modes Sealevel Systems ULTRA COMM 21 PCI Page 5 Card Setup Baud Rates and Divisors for the Div1 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 For this Data Rate Choose this Data Rate 1200 bps 300 bps 2400 bps 600 bps 4800 bps 1200 bps 9600 bps 2400 bps 19 2K bps 4800 bps 57 6 K bps 14 4K bps 115 2 K bps 28 8K bps 230 4K bps 57 6K bps 460 8K bps 115 2K 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 2400 bps 192 4800 bps 96 9600 bp
17. nches 16 51 cm Board Height including Goldfingers 4 2 inches 10 66 cm Board Height excluding Goldfingers 3 875 inches 9 84 cm Sealevel Systems ULTRA 21 Page 9 Appendix Troubleshooting Appendix A Troubleshooting A Serial Utility Diskette 1s 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 i e 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
18. s 48 19 2K bps 24 38 4K bps 57 6K bps 115 2K bps 230 4K bps 460 8K bps Sealevel Systems ULTRA COMM 2I PCI 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 21 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 cover Gently insert the ULTRA 2 into the slot Make sure that the adapter is seated properly 5 Replace the screw 6 Replace the cover 7 Connect the power cord Sepe Installation is complete Sealevel Systems ULTRA 21 Page 7 Technical Description Technical Description The Sealevel Systems ULTRA 21 provides a PCI interface adapter with 2 isolated asynchronous serial ports 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 t
19. ti 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 32 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 21 Page 13 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
20. 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 character stop bits 9600 8 1 Sealevel Systems ULTRA COMM 21 PCI Page 15 6 5 Appendix F Silk Screen Appendix F Silk Screen 42 RB C4 U7 Page 16 2 par BBBBBBBBBBB mo ME 56N136 ans 71 n RIT RIZ gt PORT cB GB FS 58 OB BBBBBBBBBBB 14 of C20 58 011 E _ s EE E 224HC02 50331 SANCER es 16550 lt C22 R30 R31 R32 88888885 AT eee BBBEBHBBBBHBBB it A C SEE Z i 2625 eee 9 T Ss BS mE Enos U21 sont ae GS 26 24N25 5 v d m BBBBBBBBBBBBBBBBBBBRB dcus ie re c nm SES o c ge 9 BS oe Gf of ge 236 E E ez 68 a a X Bee u5t a0 BO go an c BBHBHBB EL CH1 DIP 574 2 8288888 E E PPLLE O88 88888888888 2 7203 qg
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