Related Manuals for SeaLevel COMM+422
Summary of Contents for SeaLevel COMM+422
- Page 1 ™ COMM+422 USER’S MANUAL Part Number 3067 Sealevel Systems, Inc Phone: (864) 843-4343 155 Technology Place Fax: (864) 843-3067 P.O. Box 830 www.sealevel.com Liberty, SC 29657...
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Page 2: Table Of Contents
Contents ................ 1 NTRODUCTION ................... 1 VERVIEW ’ ................1 NCLUDED ............. 1 ACTORY EFAULT ETTINGS ................2 ETUP ................2 DDRESS ELECTION IRQ S ................... 3 ELECTION RS-485 E ................. 4 NABLE ................5 NSTALLATION ............ 5 PERATING YSTEM NSTALLATION ............ - Page 3 Figure 2 - DIP-Switch Illustration..............2 Figure 3 - Port to Connector Table..............3 Figure 4 - Header E1..................3 Figure 5 - Header E2..................4 Figure 6 - Connector Pin Assignments.............6 Figure 7 - Asynchronous Communications Bit Diagram.......12 © 2001d Sealevel Systems, Incorporated. All rights reserved.
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Page 5: Introduction
RS-422/485 electrical interface, such as modems, data-entry terminals, and programmable logic controllers. What’s Included The COMM+422 is shipped with the following items. If any of these items are missing or damaged, contact the supplier. • (1) COMM+422 serial interface adapter card •... -
Page 6: Card Setup
Card Setup Card Setup The COMM+422 contains several jumper straps for each port which must be set for proper operation. Address Selection The COMM+422 occupies 32 consecutive I/O locations. The 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 PC ports. -
Page 7: Irq Selection
4, or 5. In the following example, the IRQ is set as IRQ3. Figure 4 - Header E1, IRQ Selection shown. (IRQ3 Selected ) Note: The actual silk-screen for the COMM+422 may have a “2” in place of the IRQ “2/9” selection. -
Page 8: Rs-485 Enable
Figure 5 - Header E2 (RTS enable) Note: Each port on the COMM+422 can be independently selected as RS- 422 or RS-485. The number below Header E2 represents the port number (i.e. 1 = Base address, 2 = Base+8 etc.) that is effected when the jumper is installed. -
Page 9: Installation
4. Gently insert the COMM+422 into the slot. Make sure that the adapter is seated properly. 5. Install the COMM+422 in a slot, and then install the extra two port cable bracket in the slot toward the power supply from the board. -
Page 10: Technical Description
The COMM+422 provides four RS-422/485 serial ports, each utilizing a 16550 UART. This chip features programmable baud rate, data format, interrupt control and a 16 byte input and output FIFO. The COMM+422 is configured as four consecutively addressed UARTs with full RS-422/485 signal drivers and receivers. -
Page 11: Specifications
Greater than 150,000 hours. (Calculated) Physical Dimensions Board length 4.9 inches (12.45 cm) Board Height including Goldfingers 4.2 inches (10.66 cm) Board Height excluding Goldfingers 3.9 inches (9.91 cm) Please see Appendix E for board layout and dimensions. Sealevel Systems COMM+422 Page 7... -
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 IRQ’s, 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 2E0 to 2FF includes the standard address for COM2: (2F8) and COM4: (2E8). This is a valid setup option for the COMM+422. However, since only 10 address lines are actually decoded, a possible conflict with an advanced video card emulating the IBM XGA adapter (8514 register set) may occur.
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Page 14: Appendixb - How T O Get Assistance
3. Sealevel Systems maintains a forum on CompuServe providing utilities and new product information. This forum is accessed by typing “GO Sealevel” at the command prompt. 4. Sealevel Systems... -
Page 15: Appendixc - Electrical Interface
(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+422 Page 11... -
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+422 Page 12... -
Page 17: Appendixe - Silk -Screen
Appendix E - Silk-Screen Appendix E - Silk-Screen Sealevel Systems COMM+422 Page 13... -
Page 18: Appendixf - Schematic
Appendix F - Schematic Appendix F - Schematic Sealevel Systems COMM+422 Page 14... - Page 19 Appendix F - Schematic Sealevel Systems COMM+422 Page 15...
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Page 20: Warranty
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.