3087 User Manual - Sealevel Systems, Inc
Contents
1. 4 Sealevel Systems maintains a web page on the Internet Our home page address 15 http www sealevel com The latest software updates and newest manuals are available via our web site 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 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 Sealevel Systems 2 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 EIA TIA 232 The PC computer defined the RS 232 port on a 9 pin D sub connector and subsequently the EIA TIA approved this implementation as the 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 a2. SYSTEMS INCORPORATED 2 Users Manual Dw PORT 77 11111113 B BE a 1 55 O Part 3087 Sealevel Systems Inc Telephone 864 843 4343 PO Box 830 Fax 864 843 3067 Liberty SC 29657 USA www sealevel com Contents INTRODUCTION 2 EA E E 1 WHATS INCLUDED aes eA TE 1 EACTORY DEFAULT SETTINGS 1 CARD I SETUP ADDRESS SELECTION 52552 etd At ele Ae esa es 2 PORT ENABLE 7 DISABLE 3 EAS NE he St I NEE 3 RS 422 48 dis 3 IRQ SELECTION EE E ogee eb ee 11214 3 INTERRUPT MODES 4 ited oe 8 1 51 58 14 48 eee 8 CONNECTOR 8516 5 8 5 232 9 8 422 485 8 SPEGIRICA TIONS 45 5 8 ENVIRONMENTAL SPECIFICATIONS 9 A EE TER EE TRE R
3. 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 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 COMM 2 EX Page 12 Appendix D Asynchronous Communications Appendix D Asynchronous Communications Serial data communications implies that individual bits of a charac
4. if you want it to search and you select No I want to select the hardware from a list Then click Next After choosing Next you will see Hardware Type If you are installing a single port serial card select Ports COM amp LPT If you are installing a multiport serial card two or more ports choose Multi port serial adapters Click Next The Select a Device Driver window will appear On the left side find Sealevel Systems Inc and on the right side of the window select the card type you are installing Windows will now show a warning message that it could not detect the settings of the device and that you must enter the settings manually Click OK The Add New Hardware Wizard Properties window will appear This window will show the default settings for the I O address and one IRQ The one IRQ will mean that you will be sharing one IRQ for all ports on the board for a multi port card You will only need one IRQ if installing a single port card Since Windows cannot detect the settings there my be a conflict with another device or the settings shown may be not the settings you wish to use To change the settings choose Basic configuration 0001 next to the heading Setting based on When this configuration is chosen the Resources window will appear with all question marks Simply choose each Input Output Range and IRQ and change the settings to match the board settings Make sure there are no conflicts with other devices that would appear at the bottom of
5. the window under Conflicting device list After you have either accepted the default settings or changed the settings the Start Hardware Installation window will appear Click Next The next window that may appear will be the Digital Signature Not Found Do not search for digitally signed software and continue with the installation The Completing the Add Remove Hardware Wizard window will appear You will be given a chance to change the resource settings again at this point if necessary Choose Finish At this point you will need to restart your computer After restarting the Found New Hardware window will appear for each port that you are installing To confirm that the drivers installed you can now look in Device Manager under Ports COM amp LPT and each of the ports should show with their corresponding COM number Sealevel Systems COMM 2 EX Page 6 Installation Linux Refer to D software seacom Other Linux Linux serial readme where D your CDROM driver letter found on the Sealevel Systems CD This file contains valuable information on installing your adapter in the various Linux releases Also in this sub directory is the Linux SerialHOWTO This series of files explains typical Linux serial implementations as well as informing the user to Linux syntax and preferred practices QNX Refer to D software seacom Other QNX6 Install readme where D your CDROM driver letter found on the Sealevel Systems CD This file contains valuabl
6. to avoid ground loop currents with long cables Position B selects the direct ground and position C selects the 100 ohm high impedance ground Figure 7 Headers E3 and E4 Factory Default Sealevel Systems COMM 2 EX Page 5 Installation Installation Operating System Installation Windows 95 98 ME NT 2000 XP Do not install the adapter in the machine until the software has been fully installed 1 2 3 10 Start Windows Insert the Sealevel Systems CD in to your CD drive If Auto Start is enabled for this drive the software will automatically launch Otherwise point your browser to the Index htm on the root of the CD The next step is to select Install Software Select the part number for your adapter from the listing Select Windows 95 98 ME NT 2000 XP then depending on the OS version select the from current Location or Open option Follow the information presented on the screens that follow Run the Add Remove Hardware utility located in Control Panel Double click the icon to launch the Wizard When the Choose Hardware Task appears choose Add Troubleshoot a device At that point Windows will search for Plug and Play devices Since the ISA board is not Plug and Play it will not be found If Windows finds something you were not expecting cancel that install and click Next When Choose a Hardware Device appears select Add a new device Windows will then ask
7. E EA EERE KE R A 9 POWER CONSUMPTION 9 PHYSICAL DIMENSIONS San doce wae een 9 APPENDIX TROUBLESHOOTING cccccccsssssssssscccccccccsccscsccccccceccesescscsccsccsccsscsesccccscsscesees LO APPENDIX HOW GET ASSISTANCE cccccssssssccccccccccccccssscccsccscceseccssscccccsccscesecccccccssceee LL APPENDIX ELECTRICAL INTERFACE ccccsssssssscsccccccccecccsscccccsccscesecssccccccccscesessccccccscesees LD APPENDIX D ASYNCHRONOUS COMMUNICATIONS cccoccsssssscssccccccccscsssccccccccscesesccccccsscssees LO APPENDIX SILK SCREEN sssccsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssses 14 APPENDIX COMPLIANCE NOTICES cccccccscosssssssscsscccccecesecsscscccsccscesescsccscsscescssesscccccsees 19 FEDERAL COMMUNICATIONS COMMISSION STATEMENT ccccsesssseceeececeesseaececececeessaaeceeeeeesensasaeeeeeees 15 EM DIRECTIVE STATEMEN 15 WARRANTY ES A TE LO Sealevel Systems Inc SL9140 Revision 7 2006 Sealevel Systems Incorporated All rights reserved Introduction Introduction Overview The Sealevel COMM 2 EX provides the PC with 2 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 c
8. Systems and requesting a Return Merchandise Authorization RMA number The Customer agrees to insure the Product or assume the risk of loss or damage in transit to prepay shipping charges to Sealevel and to use the original shipping container or equivalent Warranty is valid only for original purchaser and is not transferable 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 This warranty applies to Sealevel manufactured Product Product purchased through Sealevel but manufactured by a third party will retain the original manufacturer s warranty 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 2 is a trademark of Sealevel Systems Incorporated Sealevel Systems COMM 2 EX Page 16
9. dows 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 D software seacom Other DOS DIAG where D the driver letter of your CDROM drive 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 COMM 2 EX Page 10 Appendix How Get Assistance Appendix B How To Get Assistance Please refer to Troubleshooting Guide prior to calling Technical Support 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 to answer many common questions This section can be found at http www sealevel com fag asp
10. driver is used IRQs 2 9 5 7 10 11 12 15 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 Line Termination Typically each end of the RS 422 485 bus must have line terminating resistors A 100 ohm resistor is across each RS 422 485 input and a 1K ohm pull up pull down combination bias the receiver inputs If more than two RS 485 nodes are configured in a multi drop network only the nodes at each end of the bus should have the 100 ohm resistors installed Connector Pin Assignments RS 232 Male DB9 GND Ground __ 5 DSR__DataSetReady 6 CTS _ 8 RI 9 Note These assignments meet 51 574 DTE for DB 9 type connectors RS 422 485 Male DB9 Ground ST RTS Request Send Positive 6 Output CTS Clear Send Positive 1 9 __ Clear Send Negative 8 Input Sealevel Systems COMM 2 EX Page 8 Specifications Specifications Environmental Specifications Temperature 0 to 70 50 to 105 Range 32 to 158 F 58 to 221 F Humidity Range 10 to 90 R H 10 to 90 Non Condensing Non Condensing Manufacturing All Sealevel Systems Printed Circuit boards are bui
11. driver is used by placing the jumpers on the same IRQ setting and setting the appropriate selections at E3 The following examples show the setup if a polling driver is used NOTE Windows does not provide a polling driver Consult your particular software for IRQ selection If no interrupt is desired remove the jumper Sealevel Systems COMM 2 EX Page 3 Card Setup Interrupt Modes Headers E9 and E10 select the interrupt modes for each port Each port must be set in the correct mode to insure proper installation E10 sets Port 1 and E9 sets Port 2 N indicates the N ormal single interrupt per port mode S Indicates the S hared interrupt mode which allows more than one port to access a single IRQ Any two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting and setting the appropriate selections at E1 Consult your particular software for IRQ selection If no interrupt is desired remove the jumper indicates the inclusion of a ohm pull down resistor required on one port when sharing interrupts N 5 M 8 2 5 M Figure 4 Headers E9 and E10 Normal IRQ Mode Set the jumpers to S for shared interrupt mode on all blocks sharing an IRQ except one Set that port block for This provides the pull down resistor circuit that makes sharing of IRQs possible If you are using more than one 2 or a compatible adapter in a bus you should onl
12. e information on installing your adapter in the QNX6 Neutrino OS as well as the files required to ensure a flawless implementation Also provided on the Sealevel Systems CD are implementation instructions for QNX4 These are found in D software seacom Other QNX4 QNX_COM txt Physical Installation The adapter can be installed in any 8 or 16 Bit ISA expansion slot and contains several jumper straps for each port that must be set for proper Do not install the Adapter in the machine until the software has been fully installed 1 Turn off PC power Disconnect the power cord 2 Remove the PC case cover 3 Locate an available ISA slot and remove the blank metal slot cover 4 Gently insert the ISA adapter into the slot Make sure that the adapter is seated properly 5 Replace the screw This is required to ensure FCC Part 15 compliance 6 Replace the cover 7 Connect the power cord Installation is finished Sealevel Systems COMM 2 EX Page 7 Technical Description Technical Description The COMM 2 EX adapter utilizes the 16550 UART chip This chip features programmable baud rate data format interrupt control and has a 16 byte transmit and receive FIFO Features Fully independent operation of ports allowing two ports RS 232 two ports RS 422 485 or one port of each Addressable as COM1 or any other I O address up to Hex Shareable IRQs allow more than one port to share a single IRQ provided the proper
13. igital 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 the users 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 to prevent or correct the interference Always use cabling provided with this product if p
14. low address 300 is selected as a base Address 300 in binary is XX11 0000 OXXX where X a non selectable address bit Figure 2 DIP Switch Illustration Note Setting the switch On or Closed corresponds to a 0 in the address while leaving it Off or Open corresponds to a 1 Refer to Appendix A for common address contentions Sealevel Systems COMM 2 EX Page 2 Card Setup Port Enable Disable Each port on the COMM 2 EX can be enabled or disabled with switch position 8 on the DIP switch The port is enabled with the switch On or Closed and disabled when Off or Open If any port is disabled be sure to disable the interrupt request for that port by removing the IRQ jumper Interface Selection RS 422 485 To select the RS 422 485 mode of operation install dip shunts in sockets found at E6 and E7 E6 sets Port 1 and E7 sets Port 2 RS 232 To select the RS 232 mode of operation install dip shunts in sockets found at E5 and E8 5 sets Port 1 and E8 sets Port 2 IRQ Selection Headers 1 and 22 select the interrupt request for each serial port E1 Port 2 E2 Port 1 If COM1 is selected the corresponding jumper must be on the IRQ4 setting If COM2 is selected the corresponding jumper must be on IRQ3 293 4 5 7 10111215 2934571011 1215 Figure 3 Header and E2 IRQ Selection Any two or more ports can share a common IRQ provided a polling
15. lt 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 12 VDC 12 VDC 5 VDC 50 50mA 195 Physical Dimensions Board length 6 9 inches 17 53 cm Board Height including Goldfingers 4 2 inches 8 89 cm Board Height excluding Goldfingers 3 9 inches 8 13 cm Sealevel Systems COMM 2 EX Page 9 Appendix A Troubleshooting Appendix A Troubleshooting Sealevel Software is supplied with the Sealevel Systems adapter and may be used in the troubleshooting procedures Using this software and following these simple steps can eliminate most common problems 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 Make sure the Sealevel Systems adapter is securely installed in a motherboard slot When running DOS or Win
16. nd 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 2 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 RS 485 RS 485 is backwardly compatible with RS 422
17. ontrol applications Included The COMM 2 EX is shipped with the following items If any of these items missing or damaged contact the supplier e 2 Serial I O Adapter Sealevel Software Factory Default Settings The 2 factory default settings are as follows Port Base Address IRQ Electrical Interface Port 1 280 5 RS 422 Port 2 288 10 RS 422 To install the COMM 2 EX using factory default settings refer to Installation on page 6 For your reference record installed COMM 2 EX settings below Port Base Address IRQ Electrical Interface Sealevel Systems COMM 2 EX Page 1 Card Setup Card Setup The 2 contains several jumper straps which must be set for proper operation Address Selection Each port on the 2 occupies eight consecutive I O locations A DIP switch is used to set the base address for these locations Be careful when selecting the base address as some selections conflict with existing ports The following table shows several examples that typically do not cause a conflict SW1 sets the I O address for port 1 of the COMM 2 EX and SW2 sets the address for port 2 Hex ao ao 11213145 6 7 Figure 1 Address Selection Table The following illustration shows the correlation between the DIP switch setting and the address bits used to determine the base address In the example be
18. ossible 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 COMM 2 EX Page 15 Warranty Warranty Sealevel s commitment to providing the best I O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured products We are able to offer WARRANTY 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 Sealevel Systems Inc hereafter Sealevel warrants that the Product shall conform to and perform in accordance with published technical specifications and shall be free of defects in materials and workmanship for life In the event of failure Sealevel will repair or replace the product at Sealevel s sole discretion Failures resulting from misapplication or misuse of the Product failure to adhere to any specifications or instructions or failure resulting from neglect or abuse are not covered under this warranty Warranty service is obtained by delivering the Product to Sealevel and providing proof of purchase Return authorization must be obtained from Sealevel Systems before returned merchandise will be accepted Authorization is obtained by calling Sealevel
19. ter 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 Character boundaries for asynchronous communications are defined by a starting bit followed by a pre defined number of data bits 5 6 7 or 8 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 Benam 1 ly 5 1 ISTP 1 bo L 0 111 2 Figure 8 Asynchronous Communications 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 pari
20. ty 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 COMM 2 EX Page 13 Appendix Silk Screen Appendix E Silk Screen 3 9 2 1903 85 422 PORT 1 85 422 PORT 2 95 232 PORT 2 5 232 1 m 145406 145496 5 7415246 27 3987 N a a PORT PORT2 2 24 19 gn 1 A 9 7415244 s MADE IN USA 4 2 Sealevel Systems COMM 2 EX Page 14 Appendix Compliance Notices Appendix F Compliance Notices Federal Communications Commission Statement FCC This equipment has been tested and found to comply with the limits for Class A d
21. y have one port set to M The following example shows both ports sharing a single IRQ E10 lt E9 2 Figure 5 Headers E9 and E10 Shared IRQ Mode Sealevel Systems 2 Page 4 Card Setup Set the jumper to S if using more than one COMM 2 EX in a bus to completely remove the pull down resistor for hardware compatibility Setting the adapter in this configuration when it is not accompanied by a pull down resistor will prevent the ports from triggering an interrupt Figure 6 Headers and E10 Sharing with another adapter Headers E3 and E4 Position A Determines whether the RS 485 driver is enabled by the UART signal Request To Send RTS or always enabled With the jumper installed in position A RTS enables the driver Removing the jumper enables the driver regardless of RTS E4 sets Port 1 while E3 sets Port 2 This jumper should only be set to A if you are running the board in a multi drop polled environment such as RS 485 and you have software that knows how to talk on the RS 485 bus For normal point to point RS 422 such as terminal emulation make sure that a jumper at position 15 not in place Positions B amp C determine whether the board provides a direct ground connection as in RS 232 and most RS 422 or a 100 ohm high impedance ground The high impedance ground is normally used by RS 485 and some RS 422
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