Related Manuals for SeaLevel SIO-530
Summary of Contents for SeaLevel SIO-530
- Page 1 ™ SIO-530 USER’S MANUAL Part Number 3063 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 ...............3 NABLE ISABLE IRQ S ..................3 ELECTION .................4 NTERFACE ELECTION ................4 JUMPER SETTINGS E1 Jumper setting for RS-232..............5 E1 Jumper setting for RS-530 and RS-422..........6 E1 Jumper setting for RS-485..............7 E1 Jumper setting for 20 mA Current Loop...........8 ................ - Page 3 Figure 6 - Header E1 RS-530/422 Interface Selected...........6 Figure 7 - Header E1 RS-485 Interface Selected..........7 Figure 8 - Header E1 20 mA Current Loop Interface Selected......8 Figure 9 - Asynchronous Communications Bit Diagram........20 © 1996j Sealevel Systems, Incorporated. All rights reserved.
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Page 5: Introduction
The SIO-530 provides the PC with one asynchronous serial port which can interface to RS-232, RS-422, RS-485, and 20 mA Current Loop devices. What’s Included The SIO-530 is shipped with the following items. If any of these items are missing or damaged, contact the supplier. •... -
Page 6: Card Setup
Be careful when selecting the base address as some selections conflict with existing ports. The following table shows several examples that typically do not cause a conflict. SW1 sets the I/O address for the SIO-530. Address... -
Page 7: Port Enable / Disable
Card Setup Port Enable / Disable Each port on the SIO-530 can be enabled or disabled with switch position 8 on the DIP-switch. The port is enabled with the switch “On” or “Closed” and disabled when “Off” or “Open”. If any port is disabled, be sure to disable the interrupt request for that port by removing the IRQ jumper. -
Page 8: Interface Selection
Note: On E2 you must move all eight push-on jumpers. This is required to completely isolate RS-232 signals from RS-422/485 and vice-versa. On E1, however, there are several jumper options. E2 jumper settings RS-232 RS-530/422/485 20 mA Current Loop Figure 4 - Header E2 options Sealevel Systems SIO-530 Page 4... -
Page 9: E1 Jumper Setting For Rs-232
Current Loop “A” selects RS-232 Receive Data. Ring Indicator “A” enables RI, “B” sets it true. Data Carrier Detect “A” selects RS-232. Data Set Ready “A” selects RS-232. Clear To Send “A” selects RS-232. Receive Data “A” selects RS-232. Sealevel Systems SIO-530 Page 5... -
Page 10: E1 Jumper Setting For Rs-530 And Rs-422
Current Loop “A” selects RS-530 Receive Data. Ring Indicator (not used on RS-530) “B” sets it true. Data Carrier Detect “B” selects RS-530. Data Set Ready “B” selects RS-530. Clear To Send “B” selects RS-530. Receive Data “B” selects RS-530. Sealevel Systems SIO-530 Page 6... -
Page 11: E1 Jumper Setting For Rs-485
(as in RS-232 and most RS-422), or a 100 Ohm high impedance ground. The 100 Ohm high impedance ground is normally used in RS-485 (and some RS- 422) to avoid ground loop currents with long cables. Sealevel Systems SIO-530 Page 7... -
Page 12: E1 Jumper Setting For 20 Ma Current Loop
Ground “A” selects normal ground for Current Loop. Current Loop “B” selects Current Loop receive data. Ring Indicator not used, “B” sets it true. Receive Data - Remove or “Float” on one pin for Current Loop. Sealevel Systems SIO-530 Page 8... -
Page 13: Installation
Installation Installation The SIO-530 can be installed in any of the PC expansion slots, but to access the “AT” or (E)ISA IRQ’s (10, 11, 12, 15) it must be installed in one of the 16 bit slots. The SIO-530 contains several jumper straps for each port which must be set for proper operation prior to installing the adapter into the computer. -
Page 14: Technical Description
The SIO-530 utilizes the 16550 UART chip. This chip features programmable baud rate, data format, interrupt control and has a 16 byte transmit and receive FIFO. The SIO-530 can be addressed as COM1:, COM2:, or any other I/O address up to 3FF Hex, providing total compatibility with most communications software and languages. -
Page 15: Connector Pin Assignments
RS-530/422/485 Line Termination Typically, each end of the RS-530/422/485 bus must have line terminating resistors. A 100 ohm resistor is across each RS-530/422/485 input in addition to a 1K ohm pull-up/pull-down combination that bias the receiver inputs. Sealevel Systems SIO-530 Page 11... -
Page 16: 20 Ma Current Loop
Pin 11 (RD-) to Customer TD+ From Customer TD- to Pin 7 (Ground ) Loop Output: Pin 9 (Current Source 2) to Pin 25 (TD+) Pin 24 (TD-) to Customer RD+ From Customer RD- to Pin 7 (Ground ) Sealevel Systems SIO-530 Page 12... -
Page 17: Specifications
IPC 610-A Class-III standards are adhered to with a 0.1 visual A.Q.L. and 100% Functional Testing. • 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. -
Page 18: Appendixa - Troubleshooting
Appendix A - Troubleshooting Appendix A - Troubleshooting A Serial Utility Diskette is supplied with the Sealevel Systems adapter and will be used in the troubleshooting procedures. By using this diskette and following these simple steps, most common problems can be eliminated without the need to call Technical Support. - Page 19 2E8-2EF is typically reserved for COM4: Please refer to your included diskette for any post production manual updates and application specific information. Always use the Sealevel Systems diagnostic software when Troubleshooting a problem. This will eliminate the software issue from the equation. Sealevel Systems SIO-530...
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Page 20: Appendixb - How T O Get Assistance
If possible, please have the adapter installed in a computer ready to run diagnostics. 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. -
Page 21: Appendixc - Electrical Interface
(space) and -12 volts (-3 to -10 volts) denotes a binary 1 (mark). The RS-232 and the EIA/TIA-574 specification defines two type of interface circuits, Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE). The Sealevel Systems adapter is a DTE interface. - Page 22 The RS-530 specification defines two types of interface circuits, Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). The Sealevel Systems adapter is a DTE interface. RS-485 RS-485 is backwardly compatible with RS-422; however, it is optimized for partyline or multi-drop applications.
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Page 23: 20 Ma Current Loop
Current Loop is normally good for data rates up to 19.2 Kbps. This limitation is due to the fact that the drivers and receivers are usually optically isolated circuits that are inherently slower than non-isolated equivalent circuits. Sealevel Systems SIO-530 Page 19... -
Page 24: 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 SIO-530 Page 20... -
Page 25: Appendixe - Silk -Screen
Appendix E - Silk-Screen Appendix E - Silk-Screen 4.2" 4.9" 3.9" Sealevel Systems SIO-530 Page 21... -
Page 26: Appendixf - Schematic
Appendix F - Schematic Appendix F - Schematic Sealevel Systems SIO-530 Page 22... -
Page 27: Appendixg - 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 SIO-530 Page 23... -
Page 28: Warranty
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.