COMM+422.PCI USER MANUAL TM Part # 7404 Sealevel Systems, Inc P.O. Box 830 Liberty, SC 29657 USA Phone: (864) 843-4343 FAX: (864) 843-3067 www.sealevel.
Contents INTRODUCTION ........................................................................ 1 OVERVIEW ......................................................................................1 WHAT’S INCLUDED.........................................................................1 FACTORY DEFAULT SETTINGS ........................................................1 CARD SETUP ............................................................................ 2 RS-485 ENABLE MODES ..................................
APPENDIX F - COMPLIANCE NOTICES .................................. 16 FEDERAL COMMUNICATIONS COMMISSION STATEMENT...............16 EMC DIRECTIVE STATEMENT ......................................................16 WARRANTY ............................................................................ 17 Figures Figure 1- Switches SW1- SW4, RS-422 ....................................................3 Figure 2 - Switches SW1- SW4, RS-485 ‘Auto’ Enabled, with ‘No Echo’ and the termination resistor in circuit. ..
Introduction Introduction Overview The Sealevel COMM+4.PCI is a four channel RS-232/485/422 PCI Bus serial I/O adapter supporting data rates up to 460.8K bps. The RS-232 compatibility allows for connection to devices utilizing the RS-232 electrical interface, such as modems, data-entry terminals, and plotters. RS-422 provides excellent communications for long distance device connections up to 4000ft., where noise immunity and high data integrity are essential.
Card Setup 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.
Card Setup Interface Mode Examples SW1 – SW4 ON OFF 1 2 3 4 AT RT NE T Figure 1- Switches SW1- SW4, RS-422 ON OFF 1 2 3 4 AT RT NE T Figure 2 - Switches SW1- SW4, RS-485 ‘Auto’ Enabled, with ‘No Echo’ and the termination resistor in circuit. ON OFF 1 2 3 4 AT RT NE T Figure 3 - Switches SW1- SW4, RS-485 ‘Auto’ Enabled, with ‘Echo’ and no termination resistor in circuit. Sealevel Systems COMM+4.
Card Setup Interface Mode Examples SW1 – SW4 (continued) ON OFF 1 2 3 4 AT RT NE T Figure 4 - Switches SW1- SW4, RS-485 ‘RTS’ Enabled, with ‘No Echo’ and no termination resistor in circuit. ON OFF 1 2 3 4 AT RT NE T Figure 5 - Switches SW1- SW4, RS-485 ‘RTS’ Enabled, with ‘Echo’ and no termination resistor in circuit. Address and IRQ selection The COMM+4.PCI is automatically assigned resources by your motherboard BIOS. Only the I/O addresses may be modified by the user.
Card Setup Electrical Interface Selection RS-232 E2 RS-422 E3 RS-232 E4 RS-422 E5 E6 RS-232 E6 E7 RS-422 E7 E8 RS-422 RS-232 Port 4 RS-232 RS-422 RS-232 RS-422 Port 1 Port 1 Port 2 E5 Port 2 E4 E8 RS-422/485 RS-232 E3 Port 3 E2 Port 3 Port 4 E1 RS-422 RS-422 E1 RS-232 Each port on the COMM+4.PCI has the ability to be used in either RS-232 or RS-422/485. This is selectable via eight 24 pin DIP-shunts at E1-E8.
Card Setup Clock Modes The COMM+4.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 Header J1. To select the Baud rates commonly associated with COM: ports (i.e. 2400, 4800, 9600, 19.2, … 115.2K bps) place the jumper in the divide by 4 mode (silk-screen D4). To select the Baud rates above 115.2K select the divide by 1 mode (silk-screen D1).
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 COMM+4.PCI can be installed in any of the PCI expansion slots and contains configuration options for each port that must be set for proper operation. 1. 2. 3. 4. 5. 6. 7. 8. Turn off PC power.
Technical Description Technical Description The Sealevel Systems COMM+4.PCI provides a PCI interface adapter with 4 RS-232/422/485 asynchronous serial ports for industrial automation and control applications. The COMM+4.PCI utilizes the 16C864 UART. This chip features programmable baud rates, data format, interrupt control and industry leading 128-byte transmit and receive FIFOs.
Specifications Specifications Environmental Specifications Specification Temperature Range Humidity Range Operating 0º to 50º C (32º to 122º F) 10 to 90% R.H. Non-Condensing Storage -20º to 70º C (-4º to 158º F) 10 to 90% R.H. Non-Condensing Manufacturing • All Sealevel Systems Printed Circuit boards are built to U. L. 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel.
Appendix A - Troubleshooting Appendix A - Troubleshooting Sealevel Software is supplied with the Sealevel Systems adapter and will be used in the troubleshooting procedures. By using this software 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.
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.
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-C/D/E or EIA/TIA-232-C/D/E. It is defined as “Interface between Data Terminal Equipment and Data Circuit- Terminating Equipment Employing Serial Binary Data Interchange”. The mechanical implementation of RS-232 is on a 25-pin D sub connector.
Appendix C – Electrical Interface 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 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.
Appendix D - Asynchronous Communications 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.
Appendix E - Silk-Screen Appendix E - Silk-Screen 4.2" 6.5" Sealevel Systems COMM+4.
Appendix F - 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 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.
Warranty Warranty Sealevel Systems, Inc. provides a lifetime warranty for this product. Should this product fail to be in good 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.
