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SeaLevel 7804e User Manual Download Page 21

©Sealevel Systems, Inc. 
SL9219 – 04/2013 

7804e Manual 

21 

 

 

 

 

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. 

Summary of Contents for 7804e

Page 1: ...Sealevel Systems Inc Sealevel com Phone 864 843 4343 ...

Page 2: ... YOU GET STARTED 4 CARD SETUP 6 SOFTWARE INSTALLATION 9 TECHNICAL DESCRIPTION 14 SPECIFICATIONS 17 APPENDIX A TROUBLESHOOTING 18 APPENDIX B HANDLING INSTRUCTIONS 19 APPENDIX C ELECTRICAL INTERFACE 20 APPENDIX D ASYNCHRONOUS COMMUNICATIONS 22 APPENDIX E MECHANICAL DRAWING 23 WARRANTY 24 ...

Page 3: ...85 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 The Ultra COMM 8 PCIe will operate on x1 x4 x8 or x16 PCIe bus slots Each port individually configurable for RS 232 RS 422 or RS 485 16C954...

Page 4: ...Warning The highest level of importance used to stress a condition where damage could result to the product or the user could suffer serious injury 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 Note The lowest level of importance used to provide background information additional tips or other n...

Page 5: ...ng our sales team at 864 843 4343 DB9 to DB25 Serial Cable Item CA176 DB9 Female RS 422 to DB25 Male RS 530 Cable 10 in Length DB78 Extension Cable Item CA233 DB78 Male to DB78 Female 72 in Length Extension Cable Terminal Block Kit Item KT106 Terminal Block Kit TB06 2 CA127 Cables Terminal Block Kit Item KT105 Terminal Block Kit TB05 CA127 Cable Terminal Block Kit Item TB34 8 Terminal Block Kit 8 ...

Page 6: ...e 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 2 and Divisor 4 or Prescaler 8 and Divisor 1 As long as the calculated data rate is within 2 you should communicate fine The following table shows some common data rates and the rates you should choose to achieve them when using the ULTRA COMM 8 PCI For ...

Page 7: ...ce If multiple Ultra COMM 8 PCIe adapters are configured in an RS 485 network only the boards on each end should have switches T P P ON Refer to the following table for each position s operation Switch Name Function 3 T Adds or removes the 120 ohm termination 4 PU Adds or removes the 1K ohm pull up resistor in the RS 422 RS 485 receiver circuit 5 PD Adds or removes the 1K ohm pull down resistor in...

Page 8: ... Sealevel Systems Inc SL9219 04 2013 7804e Manual 8 Figure 1 RS 232 Mode Figure 2 RS 422 Mode Figure 3 RS 485 with Echo Figure 4 RS 485 No Echo 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON ...

Page 9: ...ions 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 Downl...

Page 10: ...o your PC 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 image below ...

Page 11: ...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...

Page 12: ...ontinue 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 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 in...

Page 13: ...ere to Get Software section above Please take note of the destination directory it will save to 2 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 3 Navigate to the Device Manager and remove the Sealevel adapter by right...

Page 14: ...e transmit and receive FIFOs The UARTs are register compatible with 16C450 16C550 16C654 and 16C750 UARTs The FIFO depth can be changed to match the depth of these UARTs Signal Name Pin Mode GND Ground 5 TX Transmit Data Positive 4 Output TX Transmit Data Negative 3 Output RTS Request To Send Positive 6 Output RTS Request To Send Negative 7 Output RX Receive Data Positive 1 Input RX Receive Data N...

Page 15: ...ve Data 2 Input CTS Clear To Send 8 Input DSR Data Set Ready 6 Input DCD Data Carrier Detect 1 Input RI Ring Indicator 9 Input Please terminate any control signals that are not going to be used The most common way to do this is connect RTS to CTS and RI Also connect DCD to DTR and DSR Terminating these pins if not used will help ensure you get the best performance from your adapter ...

Page 16: ...8 22 56 70 47 61 CTS CTS 16 32 7 23 55 71 46 62 TX DTR 35 13 26 4 74 52 65 43 RTS DSR 18 30 9 21 57 69 48 60 RX DCD 38 10 29 1 77 49 68 40 CTS RI 15 33 6 24 54 72 45 63 GND GND 34 14 25 5 73 53 64 44 The RTS output is only available in RS 232 and RS 422 modes The RTS output is tri stated in RS 485 mode and therefore unusable The CTS input is available in all modes ...

Page 17: ...ndensing 10 to 90 R H Non Condensing All 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 Supply line 3 3VDC 12VDC Rating 100 mA 25 mA Board length 5 22 inches 13 26 cm Board Height including Goldfingers 4 38 inches 11 13 cm Board Height excluding Goldfingers 3 875 inches 9 84 cm ...

Page 18: ...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 diag...

Page 19: ...ents in protective packaging or on anti static mats 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 ca...

Page 20: ...terface 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 co...

Page 21: ...lex 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 ...

Page 22: ...stop bits usually 1 1 5 or 2 An extra bit used for error detection is often appended before the stop bits Remain Idle or next start bit Odd Ev en or Unused STOP P BIT 5 to 8 Data Bits Idle state of line 1 0 1 1 5 2 Figure 5 Asynchronous Communications Bit Diagram This special bit is called the parity bit Parity is a simple method of determining if a data bit has been lost or corrupted during trans...

Page 23: ... Sealevel Systems Inc SL9219 04 2013 7804e Manual 23 ...

Page 24: ...ctions 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 Warr...

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