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Black Box IC183C manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mail order: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com JUNE 2000[...]

  • Page 2

    4 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T TRADEMARKS All applied-for and registered trademarks are the property of their respective owners. Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. EMC Directive Statement Products bearing the CE label fulfill the requirements of the EMC directive (89/33[...]

  • Page 3

    5 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Contents 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 4

    6 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Appendix A: Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . 27 Appendix B: Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Appendix C: Electrical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Appendix D: Asynchronous Communications . [...]

  • Page 5

    7 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 1. Specifications Communication Chip — IC058C: 16750 UART; IC183C: 16950 UART Maximum Distance — 4000 ft. (1219.2 m) Operation — 2- or 4-wire Protocol — Asynchronous Speed — IC058C: Up to 460.8 kbps; IC183C: 460.8 kbps and above Connectors — (1) DB37 male, (4) DB9 male on included cable CE Ap[...]

  • Page 6

    8 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 2. Introduction 2.1 Overview The RS-422/485 Serial Interface Plus, 4-Port provides the PC with four additional RS-422/485 serial ports for terminals, modems, printers, etc. The Card is RS-485 compatible without special software or drivers. This ability is especially useful in Windows ® , Windows NT, and[...]

  • Page 7

    9 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T To install the Card using factory-default settings, refer to Chapter 4 , Installation . For your reference, record installed Card settings below: T able 2-2. Y our Installed Card Settings. Port # Base Address IRQ Electrical Specifications Port 1 Port 2 Port 3 Port 4 2.4 T echnical Description The IC058C [...]

  • Page 8

    10 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 2.4.2 M ODEM C ONTROL S IGNALS Some software packages require the use of modem handshake signals such as CTS or DCD. Refer to your application software manual to determine the requirements for modem control signals. If no requirements are mentioned, a safe configuration is to tie DTR to DSR and DCD, and[...]

  • Page 9

    11 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 3. Card Setup The RS-422/485 Serial Interface Plus, 4-Port Card has several jumper straps which must be set for proper operation. 3.1 Address Selection Each port on the Card occupies eight consecutive I/O locations. A DIP switch is used to set the base address for these locations. The Card has a unique [...]

  • Page 10

    12 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T T able 3-1. Available Address Combinations. Switch 6 Switch 7 Switch 8 Port 1 Port 2 Port 3 Port 4 On On Off 3F8 2F8 3E8 2E8 On Off On 2F8 3E8 2E8 2E0 On Off Off 3E8 2E8 280 288 Off On On 500 508 510 518 Off On Off 580 588 590 598 Off Off On 1500 1508 1510 1518 Off Off Off 3220 3228 4220 4228 On On On A[...]

  • Page 11

    13 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T T able 3-2. Address Selection T able. Address lines A9 A8 A7 A6 A5 Address Selected 12345 280-29F Off On Off On On 2A0-2BF Off On Off On Off 380-39F Off Off Off On On 1A0-1BF On Off Off On Off 2E0-2FF Off On Off Off Off Figure 3-1 shows the correlation between the DIP-switch setting and the address bits[...]

  • Page 12

    14 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T T able 3-3. Por t to Connector T able. Port # Connector Location Address Example (Base=2E0) 1 1 Base+0 2E0-2E7 2 2 Base+8 2E8-2EF 3 3 Base+16 2F0-2F7 4 4 Base+24 2F8-2FF 3.2 Jumper Selections For ease of configuration, the headers are grouped by port. Port 1 headers have a “ J1” prefix, Port 2 heade[...]

  • Page 13

    15 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 3 4 5 6 7 9 1 0 1 1 1 2 1 5 Figure 3-2. Headers J1B – J4B, IRQ Selection. Any two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting and setting the appropriate selections at J1A through J4A. Consult your particular software for IRQ selection. If no interrupt is desire[...]

  • Page 14

    16 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Set the jumpers to “S” for shared interrupt mode on all blocks sharing an IRQ except one. Set that port block for “M.” This provides the pull-down resistor circuit that makes sharing IRQs possible. If you are using more than one Serial Interface Plus Card or a compatible adapter in a bus you sho[...]

  • Page 15

    17 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 3.5 RS-485 Enable Modes RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri- state driver (not dual-state) that will allow the electrical presence of the driver to be removed from the line. The driver is in a tri-state or high-impedance condition when this occurs. Only one driv[...]

  • Page 16

    18 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Figure 3-5. Headers J1D - J4D, RS-422. AT RT NE AT RT NE Figure 3-6. Headers J1D - J4D, RS-485 “Auto” Enabled, with “No Echo.” 3.6 Interface Mode Examples J1D – J4D[...]

  • Page 17

    19 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Figure 3-7. Headers J1D - J4D, RS-485 “Auto” Enabled, with “Echo.” AT RT NE AT RT NE Figure 3-8. Headers J1D - J4D, RS-485 “ RTS” Enabled, with “No Echo.”[...]

  • Page 18

    20 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Figure 3-9. Headers J1D - J4D, RS-485 “RTS” Enabled, with “Echo.” 3.7 Line T ermination Typically, each end of the RS-485 bus must have line-terminating resistors (RS-422 terminates at the receive end only). A 120-ohm resistor is across each RS-530/422/485 input in addition to a 1-Kohm pull-up/p[...]

  • Page 19

    21 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T T able 3-4. Jumper Functions. Name Function P Adds or removes the 1-Kohm pull-down resistor in the RS-422/RS-485 receiver circuit (Receive data only). P Adds or removes the 1-Kohm pull-up resistor in the RS-422/RS-485 receiver circuit (Receive data only). T Adds or removes the 120-ohm termination. L Con[...]

  • Page 20

    22 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Figure 3-11. Clocking Mode “Divide By 4.” To double these rates up to a maximum rate for 230.4 kbps, place the jumper in the “divide by 2” (silk-screen DIV2) position. DIV1 DIV2 DIV4 DIV1 DIV2 DIV4 Figure 3-12. Clocking Mode “Divide By 2.” To select the maximum data rate (460.8 kbps) place t[...]

  • Page 21

    23 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Figure 3-13. Clocking Mode “Divide By 1.” DIV1 DIV2 DIV4[...]

  • Page 22

    24 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 4. Installation IMPOR T ANT You MUST set up the operating system BEFORE you physically install the Card. 4.1 Software Installation If you are installing an ISA adapter in DOS, OS/2, or QNX, please refer to the appropriate directory on one of the Serial Utilities Disks for instructions. 4.1.1 W INDOWS 3.[...]

  • Page 23

    25 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 4.2 Hardware Installation The RS-422/485 Serial Interface Plus Card can be installed in any of the PC expansion slots. The Card contains several jumper straps for each port that you must set for proper operation. 1. Turn off PC power. Disconnect the power cord. 2. Remove the PC case cover. 3. Locate an [...]

  • Page 24

    26 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 5. T roubleshooting Two Serial Utility Diskettes are supplied with the adapter and will be used in the troubleshooting procedures. By using this diskette and following these simple steps, most common problems can be eliminated. If you still cannot solve your problem, call Black Box technical support at [...]

  • Page 25

    27 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T 6. The following are known I/O conflicts: • The 278 and 378 settings may conflict with your printer I/O adapter. • 3B0 cannot be used if a Monochrome adapter is installed. • 3F8-3FF is typically reserved for COM1: • 2F8-2FF is typically reserved for COM2: • 3E8-3EF is typically reserved for CO[...]

  • Page 26

    28 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Appendix A: Connector Pin Assignments T able A-1. DB9 Pin Assignments. Signal Name Pin # Mode GND Ground 5 TX+ Transmit Data Positive 4 Output TX- Transmit Data Negative 3 Output RTS+ Request to Send Positive 6 Output RTS- Request to Send Negative 7 Output RX+ Receive Data Positive 1 Input RX- Receive D[...]

  • Page 27

    29 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T T able A-2. DB37 Pin Assignments. Port # 1 2 3 4 GND 33 14 24 5 TX- 35 12 26 3 RTS- 17 30 8 21 TX+ 34 13 25 4 RX- 36 11 27 2 CTS- 16 31 7 22 RTS+ 18 29 9 20 RX+ 37 10 28 1 CTS+ 15 32 6 23[...]

  • Page 28

    30 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Appendix B: Board Layout C13 74LS244 U10 C17 74LS245 U16 RP4 RP3 C16 75174 U15 C15 75175 U14 C14 75174 U13 75175 U12 74HC04 U1 1 R17 J4E P P T L L R16 J3E P P T L L R15 J2E P P T L L R14 J1E P P T L L P3 SD837M-318 * JxE JUMPER SETTINGS * P= PULL UP/DOWN ENABLE T= TERMINATION ENABLE L= CONNECT RX TO TX [...]

  • Page 29

    31 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Appendix C: Electrical Inter face RS-422 The RS-422 specification defines the electrical characteristics of balanced- voltage digital interface circuits. RS-422 is a differential interface that defines voltage levels and driver/receiver electrical specifications. On a differential interface, logic level[...]

  • Page 30

    32 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T Appendix D: Asynchronous Communications In serial data communications, individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking, and character framing (start/stop bits) are pre-defined and must corres[...]

  • Page 31

    33 RS-422/485 SERIAL INTERF ACE PLUS, 4-POR T An extra bit used for error detection is often appended before the stop bits. This special bit is called the parity bit. Parity is a simple method of determining if a data bit has been lost or corrupted during transmission. There are several methods for implementing a parity check to guard against data [...]

  • Page 32

    1 000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2000. Black Box Corporation. All rights reserved.[...]