Related Manuals for Acces PCI-COM-1S
Summary of Contents for Acces PCI-COM-1S
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Page 1: User Manual
10623 Roselle Street, San Diego, CA 92121 • (858) 550-9559 • FAX (858) 550-7322 contactus@accesio.com • www.accesio.com MODEL PCI-COM-1S USER MANUAL FILE: MPCI-COM-1S.Ca... - Page 2 Notice The information in this document is provided for reference only. ACCES does not assume any liability arising out of the application or use of the information or products described herein. This document may contain or reference information and products protected by copyrights or patents and does not convey any license under the patent rights of ACCES, nor the rights of others.
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Page 3: Terms And Conditions
Under this Warranty, liability of ACCES is limited to replacing, repairing or issuing credit (at ACCES discretion) for any products which are proved to be defective during the warranty period. In no case is ACCES liable for consequential or special damage arriving from use or misuse of our product. The customer is responsible for all charges caused by modifications or additions to ACCES equipment not approved in writing by ACCES or, if in ACCES opinion the equipment has been subjected to abnormal use. -
Page 4: Table Of Contents
Chapter 6: Connector Pin Assignments ................17 Table 6-1: Connector Pin Assignments ................. 17 Appendix A: Application Considerations ................. 18 Table A-1: Connections Between Two RS422 Devices ..........18 Table A-2: RS422 Specification Summary ..............19 Figure A-1: Typical RS485 Two-Wire Multidrop Network..........20 Manual PCI-COM-1S... -
Page 5: Chapter 1: Introduction
Half-Duplex allows traffic to travel in both directions, but only one way at a time. In Full-Duplex operation, data travels in both directions at the same time. Most RS485 communications use the Half-Duplex mode because only a single pair of wires need to be used and installation costs are dramatically reduced. Manual PCI-COM-1S... -
Page 6: Specifications
Operating Temperature Range: 0 to +60 °C • Humidity: 5% to 95%, non-condensing. • Storage Temperature Range: -50 to +120 °C • Size: 4.80" long (122mm) by 1.80" high (46 mm). • Power Required: +5VDC at 175 mA typical Manual PCI-COM-1S... -
Page 7: Figure 1-1: Block Diagram
OSCILLATOR UART Tx/Rx+ 16550 INTERFACE DB9M TRANSCEIVER SIMILAR Tx/Rx- CHIP AUTO RTS CIRCUITRY RS485 MODE ONLY Figure 1-1: Block Diagram Manual PCI-COM-1S... -
Page 8: Chapter 2: Installation
Caution! * ESD A single static discharge can damage your card and cause premature failure! Please follow all reasonable precautions to prevent a static discharge such as grounding yourself by touching any grounded surface prior to touching the card. Manual PCI-COM-1S... - Page 9 Run PCIfind.exe to complete installing the card into the registry (for Windows only) and to determine the assigned resources. Run one of the provided sample programs that was copied to the newly created card directory (from the CD) to test and validate your installation. Manual PCI-COM-1S...
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Page 10: Chapter 3: Option Selection
BIOS or Operating System. Alternately, in Windows 95/98/NT the Device Manager can be used. The cardis listed under the Data Acquisition class. Selecting the card, clicking Properties, then selecting the Resources tab will show the base address and IRQ assigned to the card. Manual PCI-COM-1S... -
Page 11: Figure 3-1: Option Selection Map
4.80" Figure 3-1: Option Selection Map Manual PCI-COM-1S... -
Page 12: Chapter 4: Address Selection
IRQ assigned. If you want to determine the base address and IRQ assigned, use the following information: The Vendor ID code for the card is 494F (ASCII for “IO”). The Device ID code for the card is 10C9. Manual PCI-COM-1S... -
Page 13: Chapter 5: Programming
► SetupComm(), SetCommTimeouts(), GetCommState(), and SetCommState() to set and change a port’s settings. ► ReadFile() and WriteFile() for accessing a port. See the documentation for your chosen language for details. Under DOS, the process is very different. The remainder of this chapter describes DOS programming. Manual PCI-COM-1S... -
Page 14: Initialization
The C command to set the UART for an 8-bit word, no parity, and one stop bit is: outportb(BASEADDR +3, 0x03) The final initialization step is to flush the receiver buffers. You do this with two reads from the receiver buffer at Base Address +0. When done, the UART is ready to use. Manual PCI-COM-1S... - Page 15 Received Data Available, the handler then reads the data. If no interrupt is pending, control exits the routine. A sample handler, written in C, is as follows: readback = inportb(BASEADDR +2); if (readback & 4) /*Readback will be set to 4 if data are available*/ data[i++]=inportb(BASEADDR); outportb(0x20,0x20); /*Write EOI to 8259 Interrupt Controller*/ return; Manual PCI-COM-1S...
- Page 16 The OUT2 bit of the UART must be set ‘TRUE’ for proper interrupt driven communication. Legacy software uses this bit to gate interrupts and the card may not communicate if bit 3 of register 4 (Modem Control Register) is not set. Manual PCI-COM-1S...
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Page 17: Chapter 6: Connector Pin Assignments
Tx+ pin 2 Tx+ pin 2 Tx- pin 3 Tx- pin 3 Full-Duplex, 4-wire, RS422 Tx+ pin 2 Rx+ pin 9 Tx- pin 3 Rx- pin 1 Rx+ pin 9 Tx+ pin 2 Rx- pin 1 Tx- pin 3 Manual PCI-COM-1S... -
Page 18: Appendix A: Application Considerations
If the differential voltage input is less than -200 mV, the receiver will provide the opposite logic state on its output. The maximum operating voltage range is from +6V to -6V allowing for voltage attenuation that can occur on long transmission cables. Manual PCI-COM-1S... -
Page 19: Table A-2: Rs422 Specification Summary
RS485 Two-Wire Multidrop Network The following illustration shows a typical multidrop or party line network. Note that the transmission line is terminated on both ends of the line but not at drop points in the middle of the line. Manual PCI-COM-1S... -
Page 20: Figure A-1: Typical Rs485 Two-Wire Multidrop Network
This has advantages in equipment that uses mixed protocol communications. Since the slave nodes never listen to another slave’s response to the master, a slave node cannot reply incorrectly. Manual PCI-COM-1S... -
Page 21: Customer Comments
If you experience any problems with this manual or just want to give us some feedback, please email us at: manuals@accesio.com.. Please detail any errors you find and include your mailing address so that we can send you any manual updates. 10623 Roselle Street, San Diego CA 92121 Tel. (858)550-9559 FAX (858)550-7322 www.accesio.com Manual PCI-COM-1S...