Acces I/O products PCI-COM2S User Manual Download Page 3 | Manualshive

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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.

IBM PC, PC/XT, and PC/AT are registered trademarks of the International Business Machines
Corporation.

Printed in USA. Copyright 2001, 2005 by ACCES I/O Products Inc, 10623 Roselle Street, San
Diego, CA 92121. All rights reserved.

WARNING!!

ALWAYS CONNECT AND DISCONNECT YOUR FIELD CABLING

WITH THE COMPUTER POWER OFF. ALWAYS TURN

COMPUTER POWER OFF BEFORE INSTALLING A CARD.

CONNECTING AND DISCONNECTING CABLES, OR INSTALLING

CARDS INTO A SYSTEM WITH THE COMPUTER OR FIELD

POWER ON MAY CAUSE DAMAGE TO THE I/O CARD AND WILL

VOID ALL WARRANTIES, IMPLIED OR EXPRESSED.

Manual PCI-COM-2S

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Summary of Contents for PCI-COM2S

Page 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Page 2: ...10623 Roselle Street San Diego CA 92121 858 550 9559 FAX 858 550 7322 contactus accesio com www accesio com MODEL PCI COM2S USER MANUAL FILE MPCI COM2S E1e ...

Page 3: ...others IBM PC PC XT and PC AT are registered trademarks of the International Business Machines Corporation Printed in USA Copyright 2001 2005 by ACCES I O Products Inc 10623 Roselle Street San Diego CA 92121 All rights reserved WARNING ALWAYS CONNECT AND DISCONNECT YOUR FIELD CABLING WITH THE COMPUTER POWER OFF ALWAYS TURN COMPUTER POWER OFF BEFORE INSTALLING A CARD CONNECTING AND DISCONNECTING CA...

Page 4: ...by warranty Warranty commences with equipment shipment Following Years Throughout your equipment s lifetime ACCES stands ready to provide on site or in plant service at reasonable rates similar to those of other manufacturers in the industry Equipment Not Manufactured by ACCES Equipment provided but not manufactured by ACCES is warranted and will be repaired according to the terms and conditions o...

Page 5: ...ic 11 Figure 3 2 Option Selection Map 13 Chapter 4 Address Selection 14 Chapter 5 Programming 15 Table 5 1 Baud Rate Divisors 16 Chapter 6 Connector Pin Assignments 19 Table 6 1 Connector Pin Assignments 19 Appendix A Application Considerations 20 Table A 1 Connections Between Two RS422 Devices 20 Table A 2 RS422 Specification Summary 21 Figure A 1 Typical RS485 Two Wire Multidrop Network 22 Manua...

Page 6: ...re off Also receiver inputs at each end of the network should be terminated to eliminate ringing These cards support these options by means of jumpers on the card See the Option Selection section of this manual for more details COM Port Compatibility Type 16550 UARTs are used as the Asynchronous Communication Element ACE These include a 16 byte transmit receive FIFO buffer to protect against lost ...

Page 7: ...e These cards have two methods of controlling the driver automatic Auto and request to send RTS control With automatic control the driver is enabled when data is transmitted The driver remains enabled for the transmission time of one character and then is disabled The cards automatically adjust their timing to the baud rate of the data Note For use with Windows programs in half duplex mode card mu...

Page 8: ... or disables the interrupts and the card will not communicate if the bit is pulled high RS232 Drivers Device 75C185 Quad Line Transceivers Output Voltage 6VDC minimum current limited to 10 mA Receiver threshold 1 5V high 0 75 low Maximum input 30VDC RS422 RS485 Differential Communication Mode Multipoint Compatible with RS422 and RS485 specifications Up to 32 drivers and receivers allowed on line S...

Page 9: ...red 5VDC at 125 mA typical 12VDC at 5 mA typical 12VDC at 5 mA typical 750 mW total power consumption Size 6 1 2 long 165 mm by 3 7 8 98 mm Figure 1 1 Block Diagram Only one serial channel shown Manual PCI COM 2S 8 ...

Page 10: ...stallation The following instructions assume the CD ROM drive is drive D Please substitute the appropriate drive letter for your system as necessary DOS 1 Place the CD into your CD ROM drive 2 Type B to change the active drive to the CD ROM drive 3 Type GLQR JJ to run the install program 4 Follow the on screen prompts to install the software for this board WINDOWS 1 Place the CD into your CD ROM d...

Page 11: ...ws 3 1 or any other non PNP compliant operating system should set the PNP CMOS option to BIOS or Motherboard Save the option and continue booting the system 9 Most computers should auto detect the card depending on the operating system and automatically finish installing the drivers 10 Run PCIfind exe to complete installing the card into the registry for Windows only and to determine the assigned ...

Page 12: ...rt for single ended RS232 communications or differential RS422 485 mode communications Echo This jumper enables local echoing of transmitted characters back to the receiver It is used to confirm locally that a character was transmitted and may be installed for two wire half duplex RS485 mode Auto or RTS Only one jumper may be installed for each COM port These jumpers select either the AUTOMATIC or...

Page 13: ...tions labeled BIAS CLK X1 and CLK X4 Placement of these jumpers controls baud rate CLK X1 permits baud rates up to 115 2K Baud and CLK X4 permits baud rates up to 460 8K Baud Data Cable Wiring When two pin numbers are joined together with a those pins are wired together in the external cable Cable Mode Jumpers Signal Card 1 Card 2 DCD 1 7 8 RX 2 3 TX 3 2 DTR 4 6 Ground 5 5 DSR 6 4 RTS 7 1 CTS 8 1 ...

Page 14: ... clicking Properties then selecting the Resources tab will show the base addresses and IRQ assigned to the card Figure 3 2 Option Selection Map Jumpers 232 422 Select communications mode Single ended RS232 or Differential RS422 485 TERM Terminate RS422 485 receiver lines BIAS Apply bias to RS422 485 receiver lines CLK X1 CLK X4 Select either 115 2 Kbaud or 460 8 Kbaud maximum RTS A B Use manual RT...

Page 15: ...and DMAs if any allotted Alternatively some operating systems Windows 95 98 2000 can be queried to determine which resources were assigned In these operating systems you can use either PCIFind or the Device Manager utility from the System Properties Applet of the control panel These cards are installed in the Data Acquisition class of the Device Manager list Selecting the card then clicking Proper...

Page 16: ... remainder of this chapter describes DOS programming Initialization Initializing the chip requires knowledge of the UART s register set The first step is to set the baud rate divisor You do this by first setting the DLAB Divisor Latch Access Bit high This bit is Bit 7 at Base Address 3 In C code the call would be outportb BASEADDR 3 0x80 You then load the divisor into Base Address 0 low byte and B...

Page 17: ...be either one or two stop bits If Bit 2 is set to 0 there will be one stop bit If Bit 2 is set to 1 there will be two stop bits Bits 3 through 6 control parity and break enable They are not commonly used for communications and should be set to zeroes Bit 7 is the DLAB discussed earlier It must be set to zero after the divisor is loaded or else there will be no communications The C command to set t...

Page 18: ...nterrupt 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 Transmission The Auto feature of the card automatically enables the transmitter when data are ready to send so no software enabling...

Page 19: ...e inportb BASEADDR 5 0x20 Wait until transmitter is empty outportb BASEADDR data i i outportb BASEADDR 4 inportb BASEADDR 4 0xFD Reset RTS bit without altering states of other bits Caution The OUT2 bit of the UART must be set low for proper interrupt driven communication This bit enables or disables the interrupts and the card will not communicate if the bit is pulled high Manual PCI COM 2S 18 ...

Page 20: ...Data input Tx Transmit Data 3 TD Transmit Data output Tx Transmit Data 4 DTR Data Terminal Ready output 5 Gnd Signal Ground GND Ground 6 DSR Data Set Ready input 7 RTS Request to Send output 8 CTS Clear to Send input 9 RI Ring Indicator input Rx Receive Data Table 6 1 Connector Pin Assignments Note If connections are to be made to a CE marked version then CE certifiable cabling and breakout method...

Page 21: ...onger lines with more noise immunity than RS232 devices is that a balanced differential drive method is used In a balanced differential system the voltage produced by the driver appears across a pair of wires A balanced line driver will produce a differential voltage from 2 to 6 volts across its output terminals A balanced line driver can also have an input enable signal that connects the driver t...

Page 22: ...tated or disconnected from the line In this case the driver provides a low internal impedance that terminates the line at that end Note You do not have to add a terminator resistor to your cables when you use the COM 2S card Termination resistors for the RX and RX lines are provided on the card and are placed in the circuit when you install the TERM jumpers Moreover installing the BIAS jumpers pro...

Page 23: ...Multidrop Network An RS485 network can also be connected in a four wire mode In a four wire network it s necessary that one node be a master node and all others be slaves The network is connected so that the master communicates to all slaves and all slaves communicate only with the master This has advantages in equipment that uses mixed protocol communications Since the slave nodes never listen to...

Page 24: ... 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 2S 23 ...

Page 25: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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