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Summary of Contents for SeaLevel COMM+4.PCI
- Page 1 COMM+4.PCI USER MANUAL Part # 7404 Sealevel Systems, Inc Phone: (864) 843-4343 155 Technology Place FAX: (864) 843-3067 P.O. Box 830 www.sealevel.com Liberty, SC 29657 USA...
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Page 2: Table Of Contents
Contents ................ 1 NTRODUCTION ..................1 VERVIEW ’ .................1 NCLUDED ............1 ACTORY EFAULT ETTINGS ................2 ETUP RS-485 E ..............2 NABLE ODES Interface Mode Examples SW1 – SW4 (continued) ....4 ............4 DDRESS AND SELECTION ................5 LOCK ODES ‘ DIV1’ ......5 ATES AND IVISORS FOR THE MODE ................. - Page 3 .............4 Figure 5 - Switches SW1- SW4, RS-485 ‘ RTS’ Enabled, with ‘ Echo’ and no termination resistor in circuit............4 Figure 6 - Asynchronous Communications Bit Diagram ......13 © 2001e Sealevel Systems, Incorporated. All rights reserved.
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Page 4: Introduction
This allows the standard COM: driver to be utilized for RS-485 communications. Our on-board hardware automatically handles the RS-485 driver enable. What’ s Included The COMM+4.PCI is shipped with the following items. If any of these items is missing or damaged, contact the supplier. ? ? COMM+4.PCI Serial I/O Adapter ? ? Sealevel Software ? ? “Spider”... -
Page 5: Card Setup
Some communication software packages refer to RS-485 as RTS enable or RTS block mode transfer. One of the unique features of the COMM+4.PCI is the ability to be RS-485 compatible without the need for special software or drivers. This ability is especially useful in Windows and other protected mode environments where the lower level I/O control is abstracted from the application program. -
Page 6: Figure 1- Switches Sw1- Sw4, Rs-422
Figure 2 - Switches SW1- SW4, RS-485 ‘ Auto’ Enabled, with ‘ No Echo’ and the termination resistor in circuit. 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.PCI Page 3... -
Page 7: Interface Mode Examples Sw1 - Sw4 (Continued)
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. Adding or removing other hardware may change the assignment of I/O addresses and IRQs. -
Page 8: Clock Modes
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, …... -
Page 9: Installation
1. Turn off PC power. Disconnect the power cord. 2. Remove the PC case cover. 3. Locate an available PCI slot and remove the blank metal slot cover. 4. Gently insert the COMM+4.PCI into the slot. Make sure that the adapter is seated properly. 5. Replace the screw. -
Page 10: Technical Description
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. -
Page 11: Specifications
Non-Condensing 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. Power Consumption... -
Page 12: Appendixa - Troubleshooting
No two adapters can occupy the same I/O 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 & on-board serial ports) do not. The IRQ is typically selected via an on-board header block. -
Page 13: Appendixb - How T O Get Assistance
If possible, please have the adapter installed in a computer ready to run diagnostics. 3. Sealevel Systems maintains a Home page on the Internet. Our home page address is www.sealevel.com. The latest software updates, and newest manuals are available via our FTP site that can be accessed from our home page. -
Page 14: Appendixc - Electrical Interface
12 volts (-3 to -10 volts) denote a binary 1 (mark). 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 Sealevel Systems Adapter is a DTE interface. RS-422 The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits. - Page 15 (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+4.PCI Page 12...
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Page 16: Appendixd - Asynchronous Communications
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+4.PCI Page 13... -
Page 17: Appendixe - Silk -Screen
Appendix E - Silk-Screen Appendix E - Silk-Screen 4.2" 6.5" Sealevel Systems COMM+4.PCI Page 14... -
Page 18: Appendixf - Compliance Notices
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 COMM+4.PCI Page 15... -
Page 19: Arranty
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.
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