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1. TL Lh E 7 SEES _ WE WE zur awe zm 8 LIF 8 m zB go u uz 2 mu NU um M n Ma TLL Sealevel Systems Inc 7402e Manual SL9251 1 2014 IDOL T 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 Relio industrial computers are warranted for a period of two years and the R9 family is warranted for a five year period from date of purchase 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 Sealevel achieved ISO 9001 2008 certification in 2011 Warranty Policy Sealevel Systems Inc hereafter Sealevel warrants that the Product shall conform to and perform accordance with published technical specifications and shall be free of defects in materials and workmanship for the warranty period In the event of failure Sealevel will re2. COMM 4 422 PCle User Manual ltem 402e and 402eS Sealevel Systems Inc Sealevel com Phone 864 843 4343 Contents el 4 Dotore You CIE iC a metu Md mM ME MM M MEUM MU EIU UU 5 MUT 5 Advisory CONVENTION 5 IDON B E 6 Error Bookmark defined Error Bookmark defined m Rm 7 PCI nur oe DR CR C NE D eS lue uc M uo D e DE D EN 7 Board ee MN tmm 7 DBOM Serial OUTS MURUS ane 7 Hardware e oiii el LOI apres ct ce i el 8 Address anda OSCE ON eana 8 VIO RTT uuu 8 8 Electrical Interface 9 o E 9 165 9 Installdti Oll ___ ___________________ 6_6 6_6_6 ______ 11 Where 6 Get Seale Vel 11 Windows 11 Guided Installaatiot a 12 Manual 15 Upgrading to the Current SeaCOM Diver 15 CNU SUPO CC __ _______ 15 DE esie HES SS se TT 16 RS 422 485 CA 200 DB 9 Connector Pi
3. IR Sto 8 Data Bits i 1 Po 1 E T LO 1 T T T T 1597 0 d 154 1 5 2 Figure 1 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 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 referred 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 Inc 7402e Manual 22 519251 1 2014 Appendix Mechanical Drawing wwe gg m mm mm e IERI IEEE zi n NN 2 gt PEGE u atte Es
4. The setup file will automatically detect the operating environment and install the proper components Next follow the information presented on the screens that follow Once the installation is complete close the disk installation window 13 Refer to the Physical Installation section to connect and install your adapter Sealevel Systems Inc 7402e Manual 14 519251 1 2014 MANUAL SOFTWARE INSTALLATION l To install a software package from the Sealevel media browse the Sealevel Systems media Software directory For example SoftwareNSeaCOMNWindowsNSeaCOM Installer exe If you are using Windows Vista or newer operating systems right click on the installer executable and choose as Administrator If you are using an operating system prior to Windows Vista double click on the executable to launch the InstallShield and initiate the driver installation Please refer to step six above in the Guided Software Installation section and follow the remaining installation steps UPGRADING THE CURRENT SEACOM DRIVER l Download the current driver using the Instructions from the Where to Get Software section above Please take note of the destination directory it will save to Uninstall the currently loaded driver SeaCOM driver found in the Control Panel Prior to Windows Vista SeaCOM will be populated in Add Remove Programs list In Vista and newer OSs it will be found in the Programs and Features list Navigate to
5. the Device Manager and remove the Sealevel adapter by right clicking on the line item choosing Uninstall Depending on your product it can be found under either Multiport Serial adapters or Universal Serial Bus controllers In the Device Manager under Action choose Scan for Hardware changes This will prompt the installation of the adapter and associate it with the newly installed SeaCOM driver LINUX SUPPORT The 7402e is supported natively in Linux kernels 2 6 28 and later Sealevel Systems Inc 7402e Manual 15 519251 1 2014 Technical Description The COMM 4 422 PCle provides four RS 422 485 ports from a single PCle slot The COMM 4 422 PCle utilizes the OXPCle954 type UART This chip features programmable baud rates data format interrupt control and industry leading 128 byte transmit and receive FIFOs The UARTs are register compatible with 16C450 16C550 16 654 and 16C750 UARTs The FIFO depth can be changed to match the depth of these UARTs RS 422 485 CA 200 DB 9 CONNECTOR PIN ASSIGNMENTS Signal Pin Negative es onerosa m Sealevel Systems Inc 7402e Manual 16 519251 1 2014 RS 422 485 DB 44 Port RS 422 485 w pp The RTS output is only available in 5 422 mode The RTS output is tri stated in RS 485 mode and therefore unusable The CTS input is available in all modes Terminating these pins if not used will help ensure you get the best performance fr
6. 5 multi drop network Up to 31 unit load 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 In 5 485 mode the transmitter is automatically enabled in hardware eliminating the need for application software control This allows the 7402e to be used with standard serial communications applications and removes the risk of bus contention and data corruption The 7402e ships with a low profile PC bracket for use in systems with a low profile PCI Express slot If you need a standard size PC bracket order the 7402eS FEATURES e PCI Express four port serial interface adapter Each port individually configurable for RS 422 or RS 485 e High performance OXPCle954 UART with 128 byte FIFOs e Each port supports data rates to 921 6K bps e Oscillator and clock prescaler support wide range of baud rates e Supports 9 bit protocol framing e PCI Express 1 0a compliant via x1 connector Compatible with all low profile and standard size PCI Express slots e Includes 36 cable that terminates to four DB9M connectors Item CA200 e Automatic RS 485 enable disable pt SN AN SN LES Sealevel Systems Inc 7402e Manual 519251 1 2014 Before You Get Started What s Included The COMM 4 422 PCle is shipped with the following items If any of these items are missing or damaged pl
7. age below SEALEVEL Support Literature Browse CD Readu Set Launch Sealevel Systems Inc 7402e Manual SL9251 1 2014 12 5 Type the part number for your adapter in the text box and press the Enter key or click on the drop box to scroll from the listing to select your product and press the Enter key S E install Support Literature Browse CD Install PRODUCT FINDER Type part number e g 2105 in the box above or click 9 ow I Ianudiz the drop box to scroll Then press the Enter key to locate the appropriate manual and driver If you installed your hardware prior to loading installing the software please click on the Click here if you installed hardware before software link and follow the listed instructions 6 Click the Install Drivers button to launch the Installation Wizard When the InstallShield Wizard window appears click the Next button to initiate the software installation 8 When the License Agreement window appears accept the terms and click Next to continue You can click the Print button to print out a copy of the agreement for your records If you do not accept the terms of the agreement the installation will stop 9 When the Ready to Install the Program window appears click the Install button to install the software onto the hard drive of your computer The files will be automatically installed into the C Program Files folder
8. dows and Linux operating systems WHERE GEI SEALEVEL SOFIWARE All Sealevel products are shipped with media containing the installers for each software package available If the media is otherwise unavailable or if desired the current versions of Sealevel software packages can be obtained from the Sealevel website see following instructions If you already have the Sealevel software proceed to the Windows or Linux installation section Sealevel software for Windows and Linux operating systems is available at these links o Software for Windows o Software for Linux Choose the link for the desired software package and click on the Download File link to download the current driver WINDOWS INSTALLATION Q Do not connect the hardware until the software has been successfully installed To install Sealevel software you must log in as an administrator or have administrator privileges in Windows To install Sealevel software you must log in as an administrator have administrator privileges in Windows Sealevel Systems Inc 7402e Manual 519251 1 2014 11 GUIDED SOFIWARE INSTALLATION 1 Insert the Sealevel media into your 2 If the AutoRun feature is enabled for this media the software will automatically launch 3 Otherwise navigate to the root directory of the media and double click the autorun exe application to launch the installation window 4 Select Install as demonstrated in the im
9. e slots This will typically cause the BIOS or OS to reassign the resources 4 Make sure the Sealevel Systems adapter is securely installed in a motherboard slot 5 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 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 You can use D software seacom Other DOS PCI FindPCl exe to determine resources that have been assigned to your adapter Make sure that if available the Use Plug n Play option is turned OFF in your BIOS Having this option set to ON in DOS or Windows 3 x will cause erratic operations 6 For Windows95 98 ME NT 2000 XP Vista 7 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 7 Always use the Sealevel Systems diagnostic software when troubleshooting a problem This will eliminate any software issues from the equation Sealevel Systems Inc 7402e Manual 19 SL9251 1 2014 Appendix B Handling Instructions ESD Warnings Electrostatic Discharges ESD A sudden electrostatic discha
10. ease contact Sealevel for replacement e COMM 422 PCle Serial I O Adapter Four Port 422 485 Serial Interface 7402 PCI Express Board with Low Profile PC Bracket 7402 5 PCI Express Board with Standard Height PC Bracket 200 DB44 Male to 4 DB9 Male Cable Sealevel Software CD SeaCOM software and user manual Advisory Conventions Warning The highest level of importance used to stress condition where damage could result to the product or the user could suffer serious injury Note The lowest level of importance used to provide background information Q additional tips or other non critical facts that will not affect the use of the product Important The middle level of importance used to highlight information that might not seem obvious or a situation that could cause the product to fail Sealevel Systems Inc 7402e Manual SL9251 1 2014 Optional Items Depending upon your application you are likely to find one or more of the following items useful with the COMM 4 422 PCle All items can be purchased from our website www sealevel com by calling our Sales team at 1 864 843 4343 DB9 to 0825 Serial Cable Item 76 DB9 Female 5 422 to DB25 Male RS 530 Cable 10 in Length DB9 to 0825 Serial Cable Item 77 DB9 Female to DB25 Male Standard RS 232 Modem Cable 72 inch Length Serial Extension Cable Item CA127 DB9 Female to 9 Male Extension Cable 72
11. eivers 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 Sealevel Systems Inc 7402e Manual 21 SL9251 1 2014 Appendix D 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 starting 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 i
12. el com 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 Systems Inc 7402e Manual 24 519251 1 2014
13. inch Length Terminal Block Item KT106 Terminal Block Kit 2 CA127 Cables Terminal Block Kit Item KT105 Terminal Block Kit 5 CA127 Cable Terminal Block Item TB34 4 Terminal Block Kit 4 Pack DB9 Female to 5 Screw Terminals RS 422 485 Sealevel Systems Inc 7402e Manual 519251 1 2014 Hardware Description PCI EXPRESS BOARD The 7402e is a low profile PCI Express 1 0a compliant board via single lane x1 slot It can be used in any single or multi lane PCI Express slot It is available in standard height PCI Express as item 7402 5 DB44F BOARD CONNECTOR The board integrates a DB44 female connector for interfacing the four serial ports via the included cable DB9M SERIAL CONNECTORS The 7402e ships with four port cable Item 200 that includes four 9 male serial connectors The pin out for these connectors is detailed in the following Technical Description section Sealevel Systems Inc 7402e Manual 519251 1 2014 Hardware Configuration ADDRESS AND IRQ SELECTION The COMM 4 422 PCle is automatically assigned I O addresses and IRQs by your motherboard BIOS or by a Plug n Play Operating System Adding or removing other hardware or moving the adapter to another slot may change the assignment of I O addresses and IRQs CLOCK MODES The COMM 4 422 PCle derives 62 5MHz clock from the PCI express link which is divided by a 8 bit clock prescaler a
14. its 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 however it is optimized for party line 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 ina 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 rec
15. n 16 NN er ee eee 17 PU cn ee ech ete ee et ice ee eee 18 Environmental SC CIE CAC OMS auus aix UM ER NM MUR UN D NUN MM M D SM M M M M MU NM B M UE 18 Ma UU hcp mmm 18 Power VIA UO 18 Appendix A _ OE 18 Appendix B Handling Insth ctl ONS ME EARU EAM 20 Sealevel Systems Inc 7402e Manual 2 SL9251 1 2014 Appendix C Electrical Interface C HX 21 Appendix D Asynchronous Communications 22 Appendix Mechanical 23 24 Sealevel Systems Inc 7402e Manual 3 SL9251 1 2014 Introduction The Sealevel COMM 2 422 PCle Item 7402e provides PCI Express 1 0a compliant interface adapter with four asynchronous serial ports for industrial automation and control applications The serial ports are field selectable for RS 422 or RS 485 and support data rates to 921 6 Kbps RS 422 mode for is designed for long distance device connections up to 4000ft where noise immunity and high data integrity are essential RS 485 mode can capture data from multiple peripherals in an RS 48
16. nd a 16 bit clock divisor to provide a wide range of possible baud rates Note that there are many combinations that can give the same result e g Prescaler 1 and Divisor 8 Prescaler 22 and Divisor 4 or Prescaler 8 and Divisor 1 As long as the calculated data rate 15 within 296 you should communicate fine BAUD RATES The following table shows some common data rates and the rates you should choose to achieve them when using the COMM 4 422 PCle For This Data Rate Clock Prescaler Choose This Divisor DLM DLL Sealevel Systems Inc 7402e Manual 8 519251 1 2014 ELECTRICAL INTERFACE SELECTION Each of the four ports on the COMM 4 422 PCle can be individually configured as an RS 422 or RS 485 interface This is selectable via the port DIP switch each is labeled with its port number Switch 1 Silk M1 Switch 2 Silk MO Mode Select OFF RESERVED 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 1 K ohm pull up pull down combination that biases the receiver inputs Each switch allows customization of this interface to specific requirements Each switch position corresponds to a specific portion of the interface If multiple COMM 4 422 PCle adapters are configured in an RS 485 network only the boards on each end should have switches T P am
17. om your adapter Sealevel Systems Inc 7402e Manual 17 SL9251 1 2014 Specifications ENVIRONMENTAL SPECIFICATIONS Specification Operating Storage 0 to 70 50 to 105 emperature Range 32 to 158 F 589 to 221 Humidity Range 10 to 90 R H 10 to 90 R H lo Non Condensing Non Condensing MANUFACTURING All 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 POWER CONSUMPTION Supply line 3 3VDC 12VDC Appendix A Troubleshooting 1 Identify all 1 0 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 2 Configure your Sealevel Systems adapter so that there is no conflict with currently installed adapters No two adapters can occupy the same 1 0 address 3 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 by the BIOS or operating system Some BIOS setup software will allow changing the IRQ but others Sealevel Systems Inc 7402e Manual 18 519251 1 2014 do not Another method of changing assigned resources is try changing PCl
18. on your computer Some versions of Windows will halt the installation and provide you with a dialog box that will ask you for permission for the installer to make changes to your Sealevel Systems Inc 7402e Manual 13 519251 1 2014 computer Click the Allow button to continue installation of your Sealevel software 10 The following dialog box may appear as shown below Click the OK button to continue SeaCOM InstallShield Wizard During installation vou may receive a warning indicating drivers being installed may not be certified Microsoft s certification labs IF you receive this message you should click Ea allow installation applications and drivers have been Fully tested to maintain the integrity of your operating system All Sealevel Systems software drivers have been fully tested by Sealevel Clicking OK will not harm your system 11 The following dialog box may appear as shown below Click the OK button to continue SeaCOM InstallShield Wizard IF SeacOM has previously been installed on this computer vou should go to the Device Manager and uninstall SeaCOM cards You should also reboot vour computer before installing any cards This is a notification that if you are upgrading from a previous driver version you should remove the associated Device Manager hardware entries and reinstall the adapter after the installing the SeaCOM software 12
19. p P ON Refer to the following table for each position s operation Switch Name Function Adds or removes the 120 ohm termination Adds or removes the 1K ohm pull up resistor in the RS 422 RS 485 receiver circuit Adds or removes the ohm pull down resistor in the RS 422 RS 485 receiver circuit Connects the TX to RX for 5 485 two wire operation Connects the to for RS 485 two wire operation RS 485 ECHO In 5 485 With Echo mode both the receiver and the transmitter are enabled simultaneously 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 An RS 485 No Echo option is selected by placing both Mode switches MO M1 in the On position Sealevel Systems Inc 7402e Manual 9 519251 1 2014 ON 1234567 Figure 1 RS 422 Mode ON ry 1234567 Figure 2 RS 485 two wire with Echo ON 1234567 Figure 3 RS 485 two wire No Echo Sealevel Systems Inc 7402e Manual 519251 1 2014 Software Installation This section contains helpful information pertaining to the installation of supported Sealevel Systems Inc software packages First the process of acquiring the software is discussed Next the installation is detailed in a step by step guide for Win
20. pair 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 abuse accidents or acts of nature are not covered under this warranty Warranty service may be obtained by delivering the Product to Sealevel and providing proof of purchase 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 This warranty applies to Sealevel manufactured Product Product purchased through Sealevel but manufactured by a third party will retain the original manufacturer s warranty Non Warranty Repair Retest Products returned due to damage or misuse and Products retested with no problem found are subject to repair retest charges A purchase order or credit card number and authorization must be provided in order to obtain an RMA Return Merchandise Authorization number prior to returning Product How to obtain an RMA Return Merchandise Authorization If you need to return a product for warranty or non warranty repair you must first obtain an RMA number Please contact Sealevel Systems Inc Technical Support for assistance Available Monday Friday 8 00AM to 5 00PM EST Phone 864 843 4343 Email support sealev
21. rge can destroy sensitive components Proper packaging and grounding rules must therefore be observed Always take the following precautions Transport boards and cards in electrostatically secure containers or bags Keep electrostatically sensitive components in their containers until they arrive at an electrostatically protected workplace Only touch electrostatically sensitive components when you are properly grounded Store electrostatically sensitive components in protective packaging or on anti static mats Grounding Methods The following measures help to avoid electrostatic damages to the device Cover workstations with approved antistatic material Always wear a wrist strap connected to a properly grounded workplace Use antistatic mats heel straps and or air ionizers for more protection Always handle electrostatically sensitive components by their edge or by their casing Avoid contact with pins leads or circuitry Turn off power and input signals before inserting and removing connectors or connecting test equipment Keep work area free of non conductive materials such as ordinary plastic assembly aids and Styrofoam Use field service tools such as cutters screwdrivers and vacuum cleaners that are conductive Sealevel Systems Inc 7402e Manual 20 519251 1 2014 Appendix C Electrical Interface R5 422 The RS 422 specification defines the electrical characteristics of balanced voltage digital interface circu
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